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Electrical engineer explains ultracapacitor Safety Tips and Tricks - Car Audio Applications

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Richard Vedvik

Richard Vedvik

Күн бұрын

Пікірлер: 489
@wilsonrawlin8547
@wilsonrawlin8547 Жыл бұрын
Thanks for making a simple clean detailed video on caps without a bunch of extra garbage. I have a six pack of these set up in my Tundra for my sub amps. Same way no balancing circuits. Charging system has more that sufficient management of the electrical system and maintaining the caps.
@JohnSeaward
@JohnSeaward Ай бұрын
Good job on video, thank god u didn't put me to sleep like the other people who over explain with un necessary Junk ! You kept me awake and interested and u taught this old dawg some actual useful information !
@richardvedvik979
@richardvedvik979 20 күн бұрын
Thank you!
@drteeth7054
@drteeth7054 5 жыл бұрын
I am 3.5 mins into this video and it is a real gem. The only two things are that the audio is not great, but I got used to it. The other is that the white board is too small to be seen. Other than that, I cannot understand why the channel does not have more subscibers. The presenter is excellent!
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Future videos will have a larger white board and smaller room to help the audio. Thanks for the input
@coldfinger459sub0
@coldfinger459sub0 5 жыл бұрын
Very good! That was one of the best videos explaining this topic
@richardvedvik979
@richardvedvik979 6 жыл бұрын
For those wondering about sizing banks for automotive systems, consider that Joules are Watts x Seconds. While the 500F bank has over 51,000 Joules of energy storage, we are interested in 14.4V - 12V which is only 1,440J or 1,440 Watts for one second. Because we are trying to supplement the battery and alternator, we aren't looking for an ultracap bank to provide long-term power supply but instead provide transient voltage regulation. As such, a 500F bank can regulate about 1kW of actual demand (not amp rated, but actual clamped power). SPL systems will use several banks.
@iRuf12
@iRuf12 5 жыл бұрын
I'm interested in using them primarily in Solar set ups ,I was looking for a video that explains what, an ultra-capacitor is and how to implement them safely. (for a mate who wants to power his off grid house with solar, when he moves to Spain). yea very informative , concise and well made video. good work. thanks. Ps first discovered ultra caps on a video about building a stun gun! it was literally lethal , so safety with these bad boys is a must
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Feel free to ask any other questions. I'll have a video on balancing circuits when some parts arrive.
@realhusky
@realhusky 5 жыл бұрын
These would only really provide a benefit when using a quick burst of power. You may be better off actually taking what money would be invested in capacitors and putting that into the battery system. If you could provide some more details on the power consumers your friend will be using I could give you a couple of more recommendations. : )
@richardvedvik979
@richardvedvik979 5 жыл бұрын
@@realhusky Oddly enough, I bought my banks off of a seller that was disassembling solar energy storage banks. Mine were used in solar applications. I agree, it seems like the wrong product for the application. We're seeing sodium ion energy storage as being an option for future utility-grade energy storage.
@PAULNBREN
@PAULNBREN 5 жыл бұрын
Richard Vedvik hi
@TRS-Tech
@TRS-Tech 5 жыл бұрын
I find a basic VSR (Voltage Sensitive Relay) works well. I connect the 12v sensor line to the positive on the ultracap bank. I put a large resistor across the VSR isolate terminals - IE between Common and Normally open. I have the resistors on a decent heat sink. On connecting the battery or turning on the isolator I have between the bank and the 12v high current supply the VSR is open so the current is limited and the bank voltage starts to rise. Once it meets the voltage on the 12v feed the contact closes and shorts out the resistor giving direct connection to my audio supply line. I also use a high current relay connected to the accessory switched 12v that closes when the car is in use. I have an override switch SPST that connects the relay to the battery 12v if I want to use my audio system without having the engine running. It is wired as a latching relay that is interrupted by a small relay connected to a car alarm armed output. As soon as I leave and arm the alarm the bank is isolated along with the VSR so it doesn't become a vampire load. I used a two position isolator so in the event of a flat battery I can turn the isolator to the second position and this gives a direct connection back to the cranking battery so I can start the car. I monitor the bank and VSR relays with a nice little digital voltmeter and LED so I can see what is happening. The above setup sounds a bit complex but its actually very simple. A 200A fuse (TD) protects against a nasty short but so far it has worked really well. The bank is almost always fully charged anyway as I have glued a 20w solar panel to the sunroof shade. This is always pulled across and I cant forget as the sunshade when pulled across pushes a microswitch that is connected to one of the alarm trigger zones. The alarm gives a warning chirp if any input is active so I can never forget. With the solar panel across both my batteries stay healthy and on a very sunny day will actually charge both batteries at about 200ma.... !! Just don't forget your Schottky inline blocking diodes and a plain old 1N4001 diode across any relay coils !! Those large relays will hit you like a train with the back EMF when they are disconnected ! I can personally vouch for the punch they can give you. I hope the above gives some idea's or help to someone considering using them. These banks are VERY useful. Please PAY ATTENTION to Richards safety advice. These packs store a huge amount of charge and if your careless they can really bite you ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Great advice and safety video Richard :-) 👍 👍 👍 👍 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Love the setup! I understood and agree, the beauty is in the simplicity. Nicely done!
@TRS-Tech
@TRS-Tech 5 жыл бұрын
@@richardvedvik979 Thanks :-) I like to rely on logic and relays instead of microcontrollers. I love relay logic, I was lucky enough to inspect an early Otis lift with 2 lifts and a dispatcher. Not a CPU in sight. All completely run by relays. Beautiful lace wiring and so well built. It just seemed alive if you know what I mean. You don't see build quality like this today. A great shame in my opinion. I achieved my Bsc in electrical engineering whilst in the Navy, that was the last time I had seen build quality like the lift controllers. That's the beauty of car systems and relay logic. So simple and yet so flexible. I love your video's so far. I hope your channel grows and grows. I will link to you where I can. All the very best to you :-) Stuart.
@ecrush5080
@ecrush5080 5 жыл бұрын
But sir, if we/ u don't use a voltage limiter (for balancing) while charging aren't we risking overcharging one of those caps in series? I said this because i have some project w/ 6 supercaps (rated in 2.7V 470F) in series, when i connect (in series) them directly w/ wire, one or two cap will always "dangerously" close to 3V when i charge it w/ 12.5v - 12.8v (i was using my spare fully charge lead acid batt) and the location of those "overvolt" caps seem to be random (that eliminate the variance factor in built quality/different ESR of those caps right?), bare in mind that all those caps never runs hot while testing on those test (direct series connection). What i mean by random is it will change places when i do full charge - discharge cycle, not so when i only using it... let say until Vtotal = 6V. using DC fan as load (inductive load, rated @ 12V , 14.13A) btw, now after i buy some those "balancer/limiter pcbs" , now i stumble on yet another balancing dilemma, this time "undervolt" hahaha... as we speak : Vt = ~12.3v , but individual V on those caps as follow : 1.65, 2.07, 2.26, 2.27, 2, 2.07. and those are not random any more, maybe i will try to manually balance those caps and let see if that help or i got variance in built quality afterall :D
@carlbarron1186
@carlbarron1186 5 жыл бұрын
Most informative and helpful tutorial on Super Capacitors these thing are gong to change the way we live.
@UnknownPerson-nl7te
@UnknownPerson-nl7te 4 жыл бұрын
It can work as a 943 mah (Calculated) battery with unlimited charge cycles as it stores electrical charges in electrical fields,whereas batteries store charges in chemical reactions
@jvon3885
@jvon3885 3 жыл бұрын
Which make you wonder why we continue with batteries at all.
@UnknownPerson-nl7te
@UnknownPerson-nl7te 3 жыл бұрын
@@jvon3885 capacitors are bulky and expensive so batteries were invented due to their conveiniency
@jvon3885
@jvon3885 3 жыл бұрын
@@UnknownPerson-nl7te I see guys replacing car batteries all the time with capacitors. And they weigh in at 1/4 the weight of a car battery. I think it's time to get away from batteries all together. Imho
@UnknownPerson-nl7te
@UnknownPerson-nl7te 3 жыл бұрын
@@jvon3885 a car battery is capable of cranking a car many times whereas a capacitors bank at most 2-3 times,and cannot power car electronics for high time,whereas car battery can power car electronics for a high amount of time,so capacitors are not a very good option to continue with
@bikert220
@bikert220 5 жыл бұрын
Great video! Just my two cents - When I work on my vehicle, and my 500k capacitor needs to be topped up, I use a brake light bulb as my current limiter, in place of the in-line fuse. It will glow brightly at first, since the capacitor is mostly a short circuit. But soon the bulb will start to dim down as the capacitor charge increases, soon matching the voltage of the battery. Once the bulb seems to be very dim I remove it and immediately replace with the in-line fuse. This works faster in my opinion than using a higher power resistor. It also gives a visual as to the charge progress.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
I will demonstrate the light bulb charge method in my next video as well. Thanks for sharing.
@raykent3211
@raykent3211 5 жыл бұрын
That makes sense. A filament bulb has a resistance that increases substantially with temperature. So later on when the bulb is dimmer it has a lower resistance than the fixed value resistor would have. So it finishes the job safely and quicker.
@raykent3211
@raykent3211 5 жыл бұрын
BTW, you could measure cold with a multimeter and compare it to the rated values. Eg a 14V, 28W bulb would pass 2 amps in normal use, therefore have a hot resistance of 7 ohms.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Yup, i understand how linear loads, like incandescent bulbs, behave and I considered a time-lapse charging demo but didn't want this video to run long. I can measure current during the process. Thanks for the input!
@raykent3211
@raykent3211 5 жыл бұрын
@@richardvedvik979 and thank you for the video! Looking forward to more.
@stephensomersify
@stephensomersify 5 жыл бұрын
watched for the steel tape measure measuring current ! :-)
@foruzeshpatrick2053
@foruzeshpatrick2053 Жыл бұрын
Dear friend, Richard, thank you for your attention. In some videos on KZfaq, it is shown that they receive 300 V output from 8 super capacitors, and some videos show tens of thousands of V output and arc from hand-made capacitors. This is what kind of setup with electronic equipment is necessary to receive a high voltage arc. Thanks
@richardvedvik979
@richardvedvik979 Жыл бұрын
Most of the people using kV are using microwave capacitors or other high-voltage capacitors. Then a step-up transformer/circuit is needed to generate kV. It's quite dangerous and best left to people with a good understanding of electronics and electrical safety. The output voltage of the capacitor varies with construction and you can wire capacitors in series to boost output voltage.
@soyamayores8297
@soyamayores8297 2 жыл бұрын
Great Video ! Super informative. Even though I want to build one, It is super expensive here in the Philippines.
@quadflopper1012
@quadflopper1012 5 жыл бұрын
what find totally amazing about maxwell UC's is 5+ years ago the market was so saturated with both new and used surplus UC's that the manufacturers had quit producing new units and is was not uncommon to see them selling for $10 a piece or sometimes even less then one guy starts posting youtube videos showing how he was able to successfully replace his car's battery with ultracaps and within a year the market went from massive surplus to critical shortage causing the prices to increase to the point where at times I've seen used ones selling for as much as $100 each and even now the premade ultracap poser banks are selling for as high as $800 each. I always think of the ultracap situation whenever I hear someone say that one person by themselves can't effect change or make a difference......
@richardvedvik979
@richardvedvik979 5 жыл бұрын
That's how demand can drive and change. :)
@bigbiscuit6751
@bigbiscuit6751 Жыл бұрын
I use 2 banks 500 farads each wire to a bank of 80 ah of LTO lithium - works like charm!!!
@igbatious
@igbatious 5 жыл бұрын
thanks for the info, this helps a lot. please consider a better mic tho, had to crank the volume.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Understood, I can edit audio before posting future videos. Thanks for the feedback.
@richardvedvik979
@richardvedvik979 6 жыл бұрын
The pics at the end aren't final products, but are intended to show some of the ways I have mounted and fused ultracapacitor banks.
@dvcsub
@dvcsub 5 жыл бұрын
I’ve had a bank of six of these maxwells with balancing boards in the soda can configuration since December(so almost 6 months now) but I’ve been kinda scared to actually install them. I’m going to see if I can rearrange them to be inline and mount them on top of the trunk like your last picture! I noticed you have some sort of carpet on top of them in some of the pictures. Is that just speaker box carpet?
@dragonscargames4808
@dragonscargames4808 5 жыл бұрын
If I were trying to use these to charge an electric scooter that says DC 12V next to the charger port, how would I do so? I need a vid that's quick but easy 😂. I'm not good with long explanations and such. Thanks for the help if you reply
@josephsvensson6637
@josephsvensson6637 5 жыл бұрын
@@dragonscargames4808 Using supercaps to charge batteries is not very productive because the capacitors will likely store less energy than the batteries overall. The only reason to use these instead of batteries is because they can release their stored energy almost instantly, vs batteries which hold much more but can't release it as quick.
@greasemunkeyyy
@greasemunkeyyy 4 жыл бұрын
what kind of capret tape is that?
@richardvedvik979
@richardvedvik979 4 жыл бұрын
@@greasemunkeyyy can you expand on capret tape? the Mastic?
@jp040759
@jp040759 4 жыл бұрын
You can use a 12 volt incandescent bulbs in series with the caps for charging them also. Resistance is high when bulb is lit and drops and charges cap faster as bulb goes out and becomes zero ohms. They will charge faster this way. I used this technique on 450 volt DC power supply I made to charge flash capacitors from mains with a rectifier and 100 watt bulb in series. It worked perfectly and the bulb dissipates less heat during on charge cycle.
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Agreed, those bulbs work great but add a challenge in that they do get hot and need to be supported somehow.
@wingerrrrrrrrr
@wingerrrrrrrrr 3 жыл бұрын
Light bulbs should generate less heat than resistors since they're converting some of the energy to light rather than 100% to heat like the resistors would.
@realhusky
@realhusky 5 жыл бұрын
Very well explained! Thank you!
@judgedredd8876
@judgedredd8876 Жыл бұрын
Being that the supercacitors are connected in parallel to the car battery another 100A fuse is needed at that end (eg while disconnecting the capacitor bank or current flows towards the capacitor bank).
@richardvedvik979
@richardvedvik979 Жыл бұрын
So, I put a fuse at the ultracap bank that is easily removed. That isolates the cap bank from the car.
@davyhay1
@davyhay1 4 жыл бұрын
Yeah, you're an audio guy--flubbed up and said Hybrid Audio! lol Team Hybrids here!! Thanks for the info!
@hableel
@hableel 6 жыл бұрын
Thank you for sharing valuable information
@yagoa
@yagoa 5 жыл бұрын
A PTC fuse with a resistor in parallel and maybe series would be very efficient for charging with a more constant current
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Neat idea, I will be experimenting with charging and balancing options soon.
@offgrid2010
@offgrid2010 4 ай бұрын
Thank you for your previous answer. Is there a way of knowing how much current the cap's can handle for a quick discharge? It seems to me that speakers require an inordinate amount of power to do their thing! Fortunately my purpose is for an e-bike 30aH battery pack.1000 watt bub motor. Not powerful magnets!
@chrisw1462
@chrisw1462 4 жыл бұрын
You mentioned regenerative braking - does anyone do that, commercially? I designed an electric drive system on paper a while back, and came up with that idea myself. The regen circuit could be designed much more efficient at a higher voltage if it directly fed a capacitor bank. Then a buck/boost charger could drain the caps to charge the main batteries, and/or supplement drive power during high acceleration. Haven't heard of anyone doing it though. Of course, back then electric car battery voltage was considered 'high voltage' at 48 or 72 volts.. lol..
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Regen braking is much more common, even on non-hybrid cars. My 2014 Accord essentially uses the alternator to load the engine when braking coasting which causes voltage output to jump from the normally regulated 12.5VDC to 14.4VDC. The issue with caps in a high voltage application is the number required in series, you'd have banks similar to the 18650 or 26650 battery banks in some electric cars or the "powerwall".
@danielcraft7254
@danielcraft7254 3 жыл бұрын
Any chance of you making a video describing the pros and cons to switching the car battery to an ultracapacitor bank and showing how you would do it and maintain it?
@slap_my_hand
@slap_my_hand 5 жыл бұрын
You should really add an overvoltage protection circuit across each capacitor in the bank. Differences in the manufacturing process can lead to higher voltages across some of the capacitors.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Totally agreed when using them at their rated voltage. Manufacturing variances in ESR will certainly cause differences in voltage across each cap. Since we don't operate 2.7V or 2.85V caps at rated voltage in cars regulated to 14.4VDC, the banks I've ran and installed for the past 6 years have been fine.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Note that six 2.7V caps in series are rated for 16.2 VDC (and six 2.85V caps are rated for 17.1 VDC). That's why I'm pretty comfortable operating them at 14.4 VDC without balancing circuits. Six of the older 2.5V caps in series are rated for 15 VDC and in that application I would recommend balancing circuits (if you can find them). That said, I certainly should have put more of an emphasis on balancing techniques and mentioned that the active balancing circuits are the recommended way to ensure long life and safe operation for any application. Thanks!
@slap_my_hand
@slap_my_hand 5 жыл бұрын
​@@richardvedvik979 Even with a significant safety margin i probably couldn't sleep at night if 350€ worth of capacitors had no protection.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
@@slap_my_hand I certainly appreciate the concern. I added notes on balancing and will continue to edit those notes further to help others. Part of my comfort may be due to my having used them like this for over 6 years with a decade of industry applications to reference.
@azmanshah25
@azmanshah25 2 жыл бұрын
Thansk for this great explaination. I hv a question, do i need to put 2 fuses before and after the capacitor
@richardvedvik979
@richardvedvik979 2 жыл бұрын
I fuse on the input to the capacitor bank (before) with a MAXI fuse (a circuit breaker would also work) in order to isolate the cap bank from the car when disconnecting the battery. Treat these like batteries as it relates to fusing. I also fuse after the cap bank, sized for the wire, in order to limit fault energy. So , yes, two fuses.
@lostguy2023
@lostguy2023 7 ай бұрын
For my ebike that is.
@DigVision
@DigVision 5 жыл бұрын
A rules of thumb for video recording, never face direct sunlight...help in video quality.
@Billblom
@Billblom 5 жыл бұрын
A rule of thumb for doing ANY recording. USE A GOOD MICROPHONE!! The video was not great, but the audio was barely intelligible... Sort of like talking in a big drum in the next room. Sounded horrible.
@pieterbezuidenhout2741
@pieterbezuidenhout2741 5 жыл бұрын
Agree on the sound quality, very hard to HEAR what he says.
@kjaques1
@kjaques1 3 жыл бұрын
This video is superb. Thankyou very much for posting.
@maximolopezsr9399
@maximolopezsr9399 Жыл бұрын
Your Explanation is great ,,but the Microphone is located it in the wrong location and is very hard ,,to lListing ,,
@richardvedvik979
@richardvedvik979 Жыл бұрын
understood, I messed up the editing process for the first clip and did not get the gain set correctly. it's a silly mistake and one that I cannot correct once posted.
@Animalwon
@Animalwon 3 жыл бұрын
Excellent video presentation but in the future I Would advise you to use a wireless lapel microphone so that your voice remains louder than your room's echos. Here your echos are in danger of making your audio unintelligible. Looking forward to more videos from you!
@richardvedvik979
@richardvedvik979 3 жыл бұрын
Totally agreed. I have lapel mics and plenty of software to fix audio.
@markroberts715
@markroberts715 Жыл бұрын
Thanks so much for the info man!! Quick question, would I be able to charge a bank of 6 3v cells with a 6s rc batt charger? The bank has balancing boards too
@richardvedvik979
@richardvedvik979 Жыл бұрын
sorry for the delay. Charging the bank requires a source with current limiting and an output voltage set for the desired bank voltage. The benefit of capacitor banks is that they can meet whatever voltage you desire (within range). They are not limited to the design voltage of a battery.
@voice4voicelessKrzysiek
@voice4voicelessKrzysiek 4 жыл бұрын
I see, so you are the guy responsible for these house shaking, windows rattling passing cars playing music (base, mostly) at full volume! I am thinking about the ways I could "audio frequency RF bomb" them and blow theirs audio PAs. Those super-caps in their system would just be very helpful, delivering necessary momentary power. 😁. Joking aside, great content; thank you. Thinking about other uses of these wonderful devices in applications where quick re-charging and huge momentary power delivery is needed as a supplement to the battery.
@richardvedvik979
@richardvedvik979 4 жыл бұрын
I'm mostly involved in the sound quality side of IASCA, but I am guilty of building some window shakers over the years. :) Instead of an RF bomb, you'd want an EMP that could direct a magnetic field toward the vehicle, the magnetic field would manipulate the speaker/woofer cones and could move them beyond mechanical limits. :) I think cordless tools could benefit from some ultracap assistance, albeit from the much smaller versions.
@Z-Ack
@Z-Ack 2 жыл бұрын
Ive wondered that with an ultracap's extremely low esr, and extremely high capacitance, i wonder how theyll act when used in band pass filters..? Seems like theyd totally eliminate designated frequencies and not put any back emf or noise into the audio signal.. and with duty cycles so high theyd last forever in those situations. You wouldnt need to have the huge deals you had here but never heard of anybody using em in those circuits.. or maybe i just havent seen that yet and is already a thing..
@richardvedvik979
@richardvedvik979 2 жыл бұрын
Interesting idea. I haven't seen anyone try to use this type of capacitor in an audio filter either.
@controlfreak2444
@controlfreak2444 2 ай бұрын
Hi I'm trying to charge an ultracapacitor Bank. I got the Deadshot on the multimeter and blew my 50 amp fuse. When you said I could use a current limiting charger, couldn't I just use a 12 vdc wall charger with like 300 milliamp output?
@richardvedvik979
@richardvedvik979 2 ай бұрын
Hi there. The wall transformers or wall power supplies are generally not current limiting, they would likey fail and/or catch fire quickly. Many car battery chargers are current limiting, and you could use the 2A or 10A setting.
@controlfreak2444
@controlfreak2444 2 ай бұрын
@@richardvedvik979 Thank you! Once the capacitor is fully charged do I ever have to worry about it going to a short again? At which point (or should I say voltage) does the short come into play? Or the excessive current draw. I'm using this for car audio and the max voltage of the bank is 16 volts.
@kennethschultz6465
@kennethschultz6465 5 жыл бұрын
Caling the seperator or insulator film for dielectric Dielectric is the insulating capasety of the materiale ..
@ek9772
@ek9772 5 жыл бұрын
Thank you for your very professional presentation. I noticed you don’t use circuits to balance the capacitors the way they are offered in eBay. Could you explain the reason for not using them, and when would you use them?
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Thanks for the comments. You'll notice in my previous responses I identify that the balancing circuits are definitely required when you operate the capacitors at their rated voltage but in a car with a 14.4VDC alternator output, we aren't near the combined rating of 16.2VDC.
@TH-wr1dv
@TH-wr1dv 4 жыл бұрын
@@richardvedvik979 But without balancing circuit how you prevent that they do not slowly get unbalanced? And when you discharge them how you prevent that you do not end up reverse polariy situation if they are not balanced?
@voidex136
@voidex136 4 жыл бұрын
@@TH-wr1dv he can't. That is why balancing needed
@TH-wr1dv
@TH-wr1dv 4 жыл бұрын
@@voidex136 Yep that was my point. It does not matter that total voltage is under combinet rated voltage. Without balancer it is just time bom with longer fuse.
@ockamrazor477
@ockamrazor477 4 жыл бұрын
@@TH-wr1dv 1,000,000 cycles a million chances. I worry about airflow bw the amps and the caps. At least the are not being run at deep cycles consistently so they will stay well within operational limits, especially if he regulates the initial charges. I've popped a 100a fuse on a half farad in an initial charge. Many designs are calling for 40a change limits. Once the battery is stiffened as long as he isn't parking lot pimping too much, over straining equipment, or overheating alternator at idle he should be good to go.
@trampfossil
@trampfossil 5 жыл бұрын
I have a 72v Gem car and want to increase the length of charge /discharge (run time) on the vehicle now it has 6 lead acid 12v batteries and I am making a 12v supplemental 6 panel solar array to charge during the daytime hours. what type of system do you recommend to supplement with?
@Hertzsogood219
@Hertzsogood219 5 жыл бұрын
Very informative video! Thanks.
@lostguy2023
@lostguy2023 7 ай бұрын
Hey,... that's pretty smart. I wonder if I could use one of those as a regen brake power dump, and then I could use the stored charge as a 10-30 second turbo/boost to get me off the line far quicker. (not to mention at TOP SPEED!) :-)
@richardvedvik979
@richardvedvik979 5 ай бұрын
I've had this question before. The main problem is the operating voltage of E-bikes and electric cars requiring too many in series, it becomes cost prohibitive really quickly.
@juggernautherculesgarcia6076
@juggernautherculesgarcia6076 3 жыл бұрын
The bikes battery pack is a 14.4 kw
@juggernautherculesgarcia6076
@juggernautherculesgarcia6076 3 жыл бұрын
The controller on the bike is 750amp
@haasjeover123
@haasjeover123 4 жыл бұрын
A lightbulb is the ideal current-limiter..(or several ones in parallel)
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Yes, but it gets hot and i didn't have a holder suitable.
@rokedo8394
@rokedo8394 5 ай бұрын
Why aren't you using balancing circuit boards between the caps so each Cap gets an equal charge voltage? Also, what is the current leak over time? I heard you say after several months they were at 10 volts so what was the starting charge voltage?
@brick2077
@brick2077 3 жыл бұрын
I have a 350 amp alternator that puts out 15 volts cold then when hot its 14.5 volts. Can I use the 2.7 volt 3000 farad caps on my electrical. I need enough to power my Taramps md8000.1 amplifier. Also can I run them with my two 12 volt lead acid batteries? All of my power wire is 4/0.
@johnkovich8874
@johnkovich8874 18 күн бұрын
I see people putting them under the hood. Is this viable, or should they be mounted close to the amplifier(s)?
@R3searchMafia
@R3searchMafia 2 ай бұрын
I keep blowing a 500 amp amp fuse with my uSTART ultra cap would you ever condone not fusing that outflow wire from the ultra cap? It’s a 1/0 wire the uSTART is a cheap ultra cap that has been recalled previously for having the cells inside the ultra cap get shorted out? But watching this video if they are all in parallel like the box shape looks or the 6 pack how could they ever short out it would always be short if the entire ultra capacitor cell is conductive unless I misheard you and you meant the buss bar terminal posts coming from the top? Or just every part of the cell is conductive? Or do I just have to much current draw is there a way to limit that current draw per amplifier? If I connected separate wires it would all lead back that one initial inrush wire anyway right? Let me know your thoughts thank you!
@workingclassperson2124
@workingclassperson2124 5 жыл бұрын
Thanks you made it easy to understand
@old_bastard2941
@old_bastard2941 5 жыл бұрын
Nice video, easy to understand. Thanks !!
@TAGUPNBLUE
@TAGUPNBLUE 9 ай бұрын
You can charge it by a DC welder
@richardvedvik979
@richardvedvik979 5 ай бұрын
This is correct. Thanks!
@kurtisengle6256
@kurtisengle6256 5 жыл бұрын
Good lecture. Thank you.
@REG3305
@REG3305 4 жыл бұрын
Good vid... 1 thing, resistance doesn't add in parallel. :D
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Yea, i caught that too and didn't want to overdub. Good ears.
@pimphandgamester
@pimphandgamester 5 жыл бұрын
I'm sure these are fine in many applications but for car audio I'll just stick to an H/O alternator and good battery because it works just fine.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
I use an HO alt whenever it's feasible. Always upgrade battery and add depending on the application. For my 2014 Accord an HO alt wasn't available at first due to CANBUS control. These helped in my application along with an AGM batt.
@kennethschultz6465
@kennethschultz6465 5 жыл бұрын
Realy ... For car Radio .. yes car audio No .. And if you don't know why .. .. ill beat you ass in ewery bass contest .. !!! No alternators or batteries can keep Up with any High performance Car Fi ..
@pimphandgamester
@pimphandgamester 4 жыл бұрын
@@kennethschultz6465 oh noes...don't beat my ass in "ewery" bass contest there Mr. Bass Master Pappy.
@kennethschultz6465
@kennethschultz6465 4 жыл бұрын
Lol bigger ain't alway's Better .. smaller is faster And a combination of Meny small super fast to the spikes And middel zice and huge Cape befor battery .. Then you kick b-ass
@tonyrebeiro
@tonyrebeiro 4 жыл бұрын
You left out voltage balancing between capacitors. As soon as you connect ultra capacitors in series, they exhibit voltage imbalances across each individual capacitor, where you could easily end up exceeding the 2.7V rating and damage it. I tried connecting them the way you show but had to give up and go for a balancing board, that uses MOSFETs to shunt power and protect each cap from over voltage.
@richardvedvik979
@richardvedvik979 4 жыл бұрын
We use incorrect terms when we talk about "balancing" for the protection circuits. A balancing circuit would actively adjust the voltage drop across each to be equal. What I think you and most people arr talking about are protection boards that shut voltage that exceeds 2.7VDC. These circuits won't "balance" voltage across each cell but provide protection of overvoltage due to ESR variances. My more recent video tests voltage variances and I do identify that the cell bank under test would benefit from cell protection. Testing different types of cell protection and maybe looking for some active "balancing" would be a future study.
@darkodimitrijevic8496
@darkodimitrijevic8496 5 жыл бұрын
Dude, how many topics did you covered....thema was Safety Tips and Tricks, unless you forgot... Looks like you have just started a pilot episode of a tv series about ultracaps dude!
@oolwioolwi4433
@oolwioolwi4433 5 жыл бұрын
Please could capacitors damage the alternator after it just crank the engine so of course it well drop below the 13v ? ie: because of highly charging current to recharge it. I have V6 engine and 180A alternator. Sorry for my language
@nobelelroi5449
@nobelelroi5449 5 ай бұрын
Great video. My mind is wanting to use this in a solar application to extend battery an reduce draw from motors and pumps. Any recommendations or videos to check out? Thanks subscribed
@richardvedvik979
@richardvedvik979 5 ай бұрын
I got mine from decommissioned solar installs. I haven't seen anything on that application since Li-Ion is more cost effective. Even commercial grade UPS can use ultra caps, but usually don't due to cost and runtime. I do know they will help 12V or 24V battery systems for in-rush. My other video includes current draw measurements.
@ron2298
@ron2298 5 жыл бұрын
awesome video I have a Honda with a 250 amp alt a group 31 xs power in front with a group 41 in the rear. My stereo when I use it pulls about 150 amps at max my car like 45 amps with ac on etc. I also have air suspention that uses a air zenith ob2 compressor that pulls like 60 amp when filling the tank. That takes about 4-5 min it starts out fast then my volts drop slightly and it takes longer to fill. Sorry for the long would I benefit from using like a xs power super cap bank? thanks
@kennethschultz6465
@kennethschultz6465 5 жыл бұрын
Nop .. if IT do not drop in rpm when car is running Then IT is you bat bank ITs too small If IT drops when you enigen andcthe 250A alternators runs ITs you leads from bat to compresser ther is too thin and looong You can ofcorse make What you want .. but if leads are insufisiant .. or battery til small .. well Cape get topped off by bat .. if bat drops well Cape Will too.. resistance in too thin leads kill A in to heat in wired instead
@musicinspire1745
@musicinspire1745 5 жыл бұрын
I didn't hear him talk about the accessory kit for Maxwells that ensure the caps remain balanced when charging. If one take more charge than the others, and they therefore are imbalanced, you will potentially destroy the one that's imbalanced.
@irongolf1
@irongolf1 4 жыл бұрын
did you read his notes on balancing? He explained why he is not using balancing circuits.
@rosekreuze
@rosekreuze 5 жыл бұрын
very excellent presentation! but the audio needs improvement. but this widens my understanding to ultra capacitors. could be useful as a motorcycle battery alternative but for cars and trucks i dont think my dad agree to replace his batteries. could be useful to jump start a vehicle tho
@richardvedvik979
@richardvedvik979 5 жыл бұрын
I totally agree that I need to spend more time on audio if I am going to be in front of the camera and not behind it! These can be a alternative for lightweight applications or racing applications where disconnecting when not in use is acceptable.
@damnitdang
@damnitdang Жыл бұрын
But if you're fuse for 300a on a power wire, a maxifuse won't go that high. So basically just fuse along according to the wire/load?
@richardvedvik979
@richardvedvik979 Жыл бұрын
Yes, you can adjust the fuse size accordingly. A high amperage circuit breaker or solenoid could also be used and would allow for a quick disconnect.
@notsure6304
@notsure6304 2 жыл бұрын
I wish I could read the writing on the wall!
@richardvedvik979
@richardvedvik979 2 жыл бұрын
Yea, I should have overlaid that content! Thanks for the feedback.
@ciaranbrennan16
@ciaranbrennan16 2 жыл бұрын
Great video!!!!!
@danielmoraes9637
@danielmoraes9637 5 жыл бұрын
i use and recomend, thank you
@mxcollin95
@mxcollin95 4 жыл бұрын
Great video!
@superstick5
@superstick5 3 жыл бұрын
What a video. BRAVO!!!!
@kalyaniaditya2225
@kalyaniaditya2225 5 жыл бұрын
Have shown some bunch of Ultra Capacitors in rear side here and there, you haven’t mentioned what for you put them in use, either in place of fossile fuel or just for support of alternater for starting of your vehicle. Pl explain whether, they can be used as fuel supplier in place of DC batteries, ( Lithium Ion Fe). Hope, you explain through your other video. Thanks.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Hi, the installation tips are focused towards the mobile audio community when used in parallel with 12V batteries. In this arrangement, ultracaps can prolong battery life, improve starting current, and reduce voltage sags in dynamic loads.
@kalyaniaditya2225
@kalyaniaditya2225 5 жыл бұрын
Thanks a lot for sharing your knowledge. Bye Mr Richard.
@changedahanddlessss
@changedahanddlessss 5 жыл бұрын
compressors are these cool thingys that level audio bro.. check em out.. usually built into video editing software too..
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Understood, I have all of that software and that hardware and the ability to edit so it sounds better. I did an initial listen through headphones and didn't level match between the 1st scene and the rest of the scenes. At something I'll pay more attention to in future videos. Thanks for commenting.
@changedahanddlessss
@changedahanddlessss 5 жыл бұрын
Richard Vedvik haha i was being a sarcastic duche sir dont mind me 😂 production is a journey for sure. I have 0 videos too what do i know.
@vincenttelfer4206
@vincenttelfer4206 5 жыл бұрын
good video, pretty disappointed with the lack of response to comments I make through Utube, 99%, what a waste of time. anyway, could a car stereo amp be used to amp up anything other than a car stereo amp? maybe one of the types of electric motor. some type of modification? amped up ultracapacators with fork truck motor? lots of ideas
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Hi! I understand you frustration with unanswered comments. A car amplifier is designed to power low impedance AC loads. A motor looks like a short circuit on startup and the amp would likely fail when trying to start. The amp couldn't power a DC motor. You could maybe power an AC induction motor, but you'd need a big amp to get to 120VAC. Many amps could power a 24VAC motor. You'd need a soft start circuit between the amp and motor, most likely.
@AnonYmous-cf2ci
@AnonYmous-cf2ci 5 жыл бұрын
Great video, sound is not as clear as it could be, though.
@JeffDrumm
@JeffDrumm 5 жыл бұрын
Can you post a video of how to actually install them in the car hooked up to the battery?
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Yep, the next vid will include balancing and vehicle installation steps! Parts are on their way
@juggernautherculesgarcia6076
@juggernautherculesgarcia6076 3 жыл бұрын
So how many volts of super capacitor batteries as a battery pack is ok to add to the bike
@charlesbrain3872
@charlesbrain3872 4 жыл бұрын
Sorry but why would you pull the caps out before a car service? I didn’t understand why
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Sorry for the delay. The reason for disconnecting the caps is safety for those servicing the car. And I don't pull the caps, just the fuse protecting the caps. Otherwise the positive battery cable is still energized and if someone disconnects the front battery they may think it's ok to let the positive terminal contact metal in the engine bay - if that happens you'll get a few thousand amps in a short circuit spark. It could also allow the car to still start, which could endanger a mechanic.
@juggernautherculesgarcia6076
@juggernautherculesgarcia6076 3 жыл бұрын
Hey buddy, my 2021 Zero Sr electric motorcycle has a 14.4 kw battery pack, how many volts of super capacitor batteries as a battery pack do I need so it’s safe
@akuma4u
@akuma4u 2 жыл бұрын
Are xs power super capacitors any good or are they garbage?
@richardvedvik979
@richardvedvik979 2 жыл бұрын
They are fine. There are a few manufacturers that also allow for private label.
@yagoa
@yagoa 5 жыл бұрын
temperature is really important, though I would be worried about that in a solar application
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Caps are less sensitive to temperature variations when compared to batteries, which may be why they are used. We're seeing applications for commercial UPS as well.
@Frank-rm9yg
@Frank-rm9yg 4 жыл бұрын
WHAT KIND OF CRANKING TIME CAN YOU GET. WILL THEY WORK ON A V8 DIESEL
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Good question. I can experiment with this soon by disconnecting my main battery and cranking on just my caps. Soon.
@supercapacitor1620
@supercapacitor1620 3 жыл бұрын
Thank you for your info.
@offgrid2010
@offgrid2010 4 ай бұрын
If you're still around: If you charge a 500F/16.2v super capacitor bank at 2 amps for 1 hour is there a total of 2 amps in the cap? If short circuited would the burst be 2 amps or would it somehow be more that that? I realize it would not be fully charged after 1 hour.
@richardvedvik979
@richardvedvik979 4 ай бұрын
Hi! I am very much around! The short circuit current would be very high, nearly instantaneous. So all of the energy supplied over the hour would be available within a second.
@offgrid2010
@offgrid2010 4 ай бұрын
@@richardvedvik979Not sure if wording this correctly. Kind of like my opening line! lol But if i am giving it 2 amps for one hour is there a way of knowing what the total current the cap is holding?
@musicinspire1745
@musicinspire1745 5 жыл бұрын
The heat from his charging resistors introduces even more inefficiencies as a passive, nonreactive load. It would be better to use circuitry to control the current more efficiently with less energy loss through heat production, unless it's winter time and you could use the heat to add to what's already in your house.
@fanplant
@fanplant 4 жыл бұрын
He's only using the resistors for a one time charge from dead. That's why he plugs it into the fuse holder without a fuse then at all other times it's following the batteries. I'm curious why he's not using any balanced circuits.
@chaitanyakumar9626
@chaitanyakumar9626 4 жыл бұрын
Can you explain how to make a Supercapacitor battery bank 48V to drive a 48v 1.5kw motor
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Step one is to combine enough caps in series to achieve the desired voltage rating. Next, you'd need to determine the amount of time you want the caps to last for. Then you'd have to increase the number of caps in series to improve the usable voltage range. Meaning, if you had a 60V rated bank, charged to 60V, the amount of usable time would be the amount of time it takes for the cap bank to discharge to 48V. You'd need to regulate the output at 48V, and maybe have a regulator that can operate down to a 10V input while maintaining a 48V output, in order to increase duration and make the most of the bank.
@kmuralikrishna1582
@kmuralikrishna1582 5 жыл бұрын
What is each battery volts and AMPs, how many battery required for 48v, 40ah ??
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Note these are not batteries. These are capacitors which store charge differently. Ultracaps are available in 2.5, 2.7, and 2.85 volts per cell. Ratings vary by model, these are 3,000F. Voltage drops under load so you size voltage based on ending time requirements.
@Graeme_Lastname
@Graeme_Lastname 5 жыл бұрын
I would like to know what the bus material is and what the screw in the cap is for. God show, much enjoyed.
@richardvedvik979
@richardvedvik979 5 жыл бұрын
The bus material in this video is aluminum. Copper is another popular option. The nut is the screw "cap" and is to secure the bus bar to the cap. Unless you mean a different "cap".
@Graeme_Lastname
@Graeme_Lastname 5 жыл бұрын
@@richardvedvik979 Thanks for your reply. I was referring to the counter sunk screw in the body of the cap. The slotted head screw which is shown in some images. I've never seen a screw in the body of a cap before so it caught my attention. Thanks again, it's a very interesting subject with a great future.
@foruzeshpatrick2053
@foruzeshpatrick2053 Жыл бұрын
I have connected 20 Maxwell 2.7V super capacitors in series and I am going to spark, but with each spark the voltage decreases a little from the capacities. The total charger of these 20 capacitors is 55V DC. How should I connect them together that 300 output voltage?
@richardvedvik979
@richardvedvik979 Жыл бұрын
I'm not sure what you mean by "I am going to spark". Please clarify. 2.7V x 20 = 54VDC. I would probably be a bit more conservative with output voltage and charging voltage because my testing (my other video) showed variances in ESR causing a few tenths of a volt drop difference between each cap. I wouldn't charge past 2.5VDC per cell or 50 VDC across all of them. If I wanted 300 VDC, I would be even more conservative with charging and would want 2.3VDC per cell average or 300/2.3 = 131 cells in series.
@2011italianoboy
@2011italianoboy 4 жыл бұрын
Good stuff... I currently have Dyna-batt manufacturers ID 5575B its a 12V, dry cell battery, 16amps hrs, and it is 4 years old. I bought it for the weight savings and at $159, it was the best option. Now, the CCA on it is around 280 and I live in NE and on days where its under 50 degrees, the car struggles to start. I want to maintain the weight savings and I like the idea of a supercapacitor. What kind and how many would I need to help boost this battery? A schematic, or links to what I can buy would be awesome.
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Sorry for the delay. You'd want the same arrangement I show and use, a bank of six 3000F in a series configuration wired in parallel with the battery. It's possible that your battery is past useful life. The battery should be good down to -20 deg F. With my cap bank and an AGM battery I was able to start my car in -30 deg F weather the past few years (northern IL).
@seriesoftubez
@seriesoftubez 5 жыл бұрын
Would this be safe to use in a car with auto start-stop and lots of computerized technology? With city driving and the AC and music cranked that's a lot of starting and stopping while drawing a lot of current. Would this constant charging and discharging of the caps be bad for the car's electronics or the amps? I'm making a build for SQ and have 100w x4 for fronts and 400w x2 for subs. I have a Golf mk7 with Blue Motion tech.
@inverterrepairing
@inverterrepairing 5 жыл бұрын
Nice
@JanicekTrnecka
@JanicekTrnecka Жыл бұрын
Does anybody know how to connect up those with flat terminals? they look the same, except they dont have the screw threaded terminal.
@richardvedvik979
@richardvedvik979 Жыл бұрын
Those are made to be permanent installs in equipment. Either soldered or pressure fit. You can download the manual for instructions.
@JanicekTrnecka
@JanicekTrnecka Жыл бұрын
@@richardvedvik979 soldering aluminium terminals is... ultrasonic or laser and this is out of scope of my possibilities. I have searched through Maxwell and SPS cap and there was nothing mentioned. I will have to resort to screw terminals...
@joecitizen6755
@joecitizen6755 Жыл бұрын
Can the ultracaps be used in an alternating current system? Thank you for the video and useful information.
@richardvedvik979
@richardvedvik979 Жыл бұрын
Hi and thanks. Sorry for the delay. These capacitors are for DC applications only. You'd need an inverter to convert between AC and DC. The capacitors I have used to live in a solar application where they stored energy made during the day and rode through peaks.
@eugene9941
@eugene9941 2 жыл бұрын
Can I use a 12 volt halogen light bulb as a resistor to charge super caps?
@richardvedvik979
@richardvedvik979 2 жыл бұрын
Yes, when placed in-line with the 12V source, the lamp will act like... a lamp... when the cap voltage is low due to the voltage drop across the lamp. As voltage drop across the lamp decreases, the bulb will become dimmer, until the voltage across the lamp is nearly zero and the caps are charged.
@austinwittman1986
@austinwittman1986 5 жыл бұрын
So why don't you need to have them close to the battery
@rndmfella1874
@rndmfella1874 5 жыл бұрын
Can I use capacitors as a ev battery supplrment? How would I wire this? Can I regen it using the vehicle controllers regen? How would I wire that? Resistance etc. My EV controller and engine runs of 18~96V, 72V being the "nominal" 0~100A with 260A peaks. For now. The battery (prismatic lithium) is rated for 100A continious discharge. How would/could I implement Capacitors to improve the EV performance and maintain that 72V Volt/100~260Amp discharge rate without draining the battery when climbing hills?
@richardvedvik979
@richardvedvik979 5 жыл бұрын
Ultracaps are very expensive in a high voltage applications. While certainly useful, you're looking at at least 36 of the 2.7V ultracaps (or 34 of the 2.85V ultracaps). If you chose to go that route, the set of ultracaps in series would be in parallel with the normal battery system. Ultracaps are good for quick charging and release while batteries are good for long-duration charging and release. Even with the investment, your uphill application is better solved with more battery capacity. You're always welcome to talk with the engineers at Maxwell on your specific application.
@mistersniffer6838
@mistersniffer6838 Жыл бұрын
What would be better for going around and starting my yard tractors, 6 2.7v 350f in series or 1 or 2 16v 5000f in parallel?
@richardvedvik979
@richardvedvik979 5 ай бұрын
If you could find a 5,000F cap bank rated for 16VDC, that will be much, much larger than a series string of 350F caps (because series caps add as inverses).
@danny51577
@danny51577 4 жыл бұрын
Hey Richard, thanks for the easy to understand, helpful video. I'm new to this and had 2 questions 1. For a bank used in car audio, does the negative post get grounded to chassis/frame like a battery? 2. If I had 2 banks, would I run each in parallel with battery and in parallel with each other? Thanks so much for your time
@richardvedvik979
@richardvedvik979 4 жыл бұрын
Hi! The cap banks get wired just like an extra battery. Bank ground to chassis, and you parallel banks like you parallel batteries.
@danny51577
@danny51577 4 жыл бұрын
@@richardvedvik979 thanks very much man, you and your videos have been a great help
@tsamuel6224
@tsamuel6224 5 жыл бұрын
People also start cars with them. How well do they perform at minus 10 F, where batteries need help?
@richardvedvik979
@richardvedvik979 5 жыл бұрын
T Samuel they are not affected the ways batteries are since they store charge in an electric field as opposed to chemicals. The datasheet for the BCAP3000 includes affects by temperature.
@xxycom8963
@xxycom8963 5 жыл бұрын
What would you think of the simplest balancing circuit, which is a zener across each cap? Cheap zeners that I could find are rated 2.5 volts, 500 mA. In the app I have in mind, the charging time is of no significance. Hence I can limit the charging current to 1/2 amp. I can also maintain 14 volts across the 5S string of caps.
@sreekumarUSA
@sreekumarUSA Жыл бұрын
XXYCOM…. Appreciate your enthusiasm deploying 6S SC/UC systems. Trust me, I’m not trying to dissuade and or discourage you from such an adventure. Remember HEAT, which’s the greatest enemy of SC/UC and it’s constantly, that (heat) in all vehicles. I’m sure you are not running a PA system in your vehicle. For a normal listening pleasure maximum sound level is not higher than 5~7watt with a good quality sound system. But if driving an ABRUMS M1A2, that’s a different level! I’d not go there… Best wishes…
@patrickwelch620
@patrickwelch620 2 жыл бұрын
If I hooked a 50 fared capacitor to a 100ah lifepo4 battery with a 100amp bms would it overload it charging the capacitor if the capacitor was empty when hooked up?
@richardvedvik979
@richardvedvik979 2 жыл бұрын
You'll notice that some of the "stiffening capacitors" for car audio use have either external or internal charging and discharging circuits. Each product should have some manufacturer instructions that explain that procedure. Without knowing the exact make/model you have, I would use an incandescent dome light in series with the power feed to slow the initial charge current.
@patrickwelch620
@patrickwelch620 2 жыл бұрын
@@richardvedvik979 great idea thx
@shaunhendrickson1628
@shaunhendrickson1628 2 жыл бұрын
Can you charge and discharge ultracapacitors simultaneously. For example you use your phone whilst it is plugged in charging?
@richardvedvik979
@richardvedvik979 2 жыл бұрын
Absolutely, that is how capacitors are routinely used. They both match input voltage and resist change in output voltage.
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