30A Buck Converter - 24V to 12V

Рет қаралды 32,207

2 жыл бұрын

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A commodity buck converter which costs £20 performs well.
New Step-down DC Converter 24V to 12V 30A 360W Buck Power Supply Module For Car www.ebay.co.uk/itm/-/18494179...
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Пікірлер: 145

@mattrey20091 2 жыл бұрын

That was very interesting to watch. Thank you Julian.

@artursmihelsons415 2 жыл бұрын

Nice purchase test. Great that it can handle load without problems. Solar mining project makes sense. ☺️ That hammer near laptop reminded me times, when I used Windows.. 😂

@seanbrendangarrette7644 10 ай бұрын

I like the way you use your palm to accurately measure the temperature.

@JulianIlett 10 ай бұрын

Thank you!

@MrJimmyjammmy 2 жыл бұрын

I've used a few of those aluminium cased buck converters in projects and never had any problems with them. One has been running in my campervan turning 12v into 48v for years, although not at those currents.

@JulianIlett 2 жыл бұрын

Good to hear. I'm hoping it will be reliable :)

@Scruffy545 2 жыл бұрын

I've had the opposite experience, have had about 5-10 fail and send 24 volts to the output killing some 12 volt led lights

@adamlumpkins2000 2 жыл бұрын

@@JulianIlett Love the videos!!! I have a question, have you looked into the SunSaver brand charge controllers? The company I used to work for, used them for charging batteries for their communication and measurement equipment in remote gas metering sites. they have options for flooded and non flooded batteries. Just wondering if you ever checked them out! Keep up the good work

@cattflap1447 2 жыл бұрын

He's "Pickled the Herrings" 😂👍

@kaoshavoc 2 жыл бұрын

I absolutely love your 5 digit thermomeater. Yes, the miss spelling is intentional. I love your vids mate.

@JulianIlett 2 жыл бұрын

Thanks 👍

@amrishhirani6096 2 жыл бұрын

Nice buck converter Thanks 👍

@Sylvan_dB 2 жыл бұрын

Sometimes you do find them putting out 13.6v to as high as 14v. This does work great if you need to run 12v automotive accessories. The cell "springiness" doesn't much affect top balance because voltage does not indicate state of charge when near full, but it does indicate the cells are likely not well matched.

@Emre-Sunay-Gebes 2 жыл бұрын

springiness is the indicator of internal resistance differencies of the batteries :)

@Bianchi77 2 жыл бұрын

Cool video, keep it up, thanks :)

@jamesg1367 2 жыл бұрын

US eBay price for a comparable (apparently identical) converter runs as low as $16.00 with free shipping. A more common price is around $20. I'm using a couple of 10A converters which are very much like this, a bit smaller, for surveillance cameras. They've been solid.

@christopherguy1217 2 жыл бұрын

I can't imagine it would pay back the investment let alone exceed the electricity cost. It might be more profitable to use the solar energy in the house to offset mains.

@frankowalker4662 2 жыл бұрын

When you first installed the solar panels, I bet you didn't think you would end up mining with them. Ha ha.

@JulianIlett 2 жыл бұрын

I bought the miners last year (I think), before the crypto market picked up. You can't get these miners at a sensible price anymore. My initial thinking was shed heating with cashback. Then I put solar panels on my house roof (to keep shed heating costs down). Now I'm building the solar crypto project. That's the sequence :)

@JulianIlett 2 жыл бұрын

Certainly when I bought the lithium bike battery cells, crypto mining wasn't on my radar :)

@tomstruct 2 жыл бұрын

"Manuel, he doesn't love me!" I think I got that reference.

@eDoc2020 2 жыл бұрын

Have you considered getting a DC clamp ammeter? It seems like now would've been a good time to have one.

@JulianIlett 2 жыл бұрын

I've got one - it's a Tenma 72-7226

@r.in.shibuya 2 жыл бұрын

Hi Julian very basic question that doesn’t seem to be easily explained. I have the 5V25A model… is getting the Amps out of the converter all dependent on the Voltage and Amps (watts) minus the efficiency in? Ie: 24V-6Amps in (144w) will get me 144w/5V = 28amps…(28amps - efficiency loss)

@invaderzim_8833 9 ай бұрын

Hey Julian, awesome content as usual, but what was the output voltage again because I think I might of missed it, looking to also upgrade the same DS6020 20 amp buck converter to a 30a or 40a one, but was wondering what the output voltage was exactly, thank you. I built a 100Ah 3s 40p pack that's 40x 2600mah in parallel x 3. 12.6v max. Tnx again. +1

@Grabatire 4 ай бұрын

Should there be an arc when the converter is connected to the battery?

@tittiger 6 ай бұрын

Have you figured the energy efficiency on these things? The Chinese suppliers say they APPROACH 95% efficiency. Is 50% efficiency "approaching"?

@devinmahoney3777 Жыл бұрын

If I want to use a Milwaukee 18v to run something at 12v/15a/180watt (that’s the start up draw and lessens after about a minute) I’m the thinking I would want to get something with this capacity. Do I need to connect multiple Milwaukee batteries to get that draw without destroying them?

@budmartin3344 2 жыл бұрын

I am curious about that Buck converter module, it has 15 ~ 40V input range that it can regulate the output down to 12V, but you are feeding it only about 13V or less, so is it still actually regulating the output with that low input Voltage? Does it put out close to 13V if input is higher than 15V? BTW, great video.

@SidneyCritic 2 жыл бұрын

You have to scale this up massively to make it worth while, and even at 2nd hand prices for HW it seams hard to make $s.

@hunter00047 2 жыл бұрын

Keep the solar stuff coming always interesting and it's best for the planet,. Maybe do some simple getting started for the new commers with schematics. 👍👍👍

@JulianIlett 2 жыл бұрын

I started out on KZfaq doing solar stuff, so I'm kind of going back to my roots. I'm rushing through all the parts of this project just to get it done, but when things slow down a bit, I'll probably go back and do some more detailed videos on all the different elements :)

@hunter00047 2 жыл бұрын

@@JulianIlett thanks for the reply, I know you've done solar years ago with your pwm and buck converters. I think it's a good time to restart these as prices have reduced and more people are interested. That's more subscribers.

@Subgunman 2 жыл бұрын

I wonder how much RFI they output and the frequency range of the RFI if they are noisey. This would be nice to build out a computer power supply with the needed voltage regulators for +5 and +3 volts needed for today's mini ITX boards. Would allow the use of a computer in a 24 volt military vehicle.

@ruinunes8251 2 жыл бұрын

I like that buck converter. This probably would be ok for me to use my 18/20v tool batteries to power up my 12v lights in my shed if I’m in a pinch.

@JulianIlett 2 жыл бұрын

Yep, perfect for that :)

@ruinunes8251 2 жыл бұрын

@@JulianIlett Now you just need to open one up to see if the inside bits are up to your standard.

@deezelfairy Жыл бұрын

@@ruinunes8251 Doubt you can, these buck converters are completely potted I think.

@fredflintstone1 2 жыл бұрын

Don't worry about the springyness it is always followed by the Summyness :-)

@JulianIlett 2 жыл бұрын

Looking forward to the Summeriness then. I bought a load of new cells anyway :)

@bsodmike 2 жыл бұрын

9:35 Hi Julian what's the little USB board on the batteries? It has all 4x USB ports? Looks neat!! Thanks!!

@bsodmike 2 жыл бұрын

It looks like a boost converter/charger?

@thereynolds2725 2 жыл бұрын

There actually is a 13.8 volt output version of this kind of potted converter.

@JulianIlett 2 жыл бұрын

I'll try to avoid those :)

@kevin83FL 2 жыл бұрын

I am jealous of your ryobi multimeter.

@marks47 2 жыл бұрын

I had an antminer S9 I think, and it did NOT like separate power supplies. I don't know why, but it would only operate at 20% or some very low capacity when connected to separate power supplies. (I do not think they were connected in parallel externally)

@km_pr 2 жыл бұрын

You should measure the internal resistance of the cells, maybe cell 2 has a way too high internal resistance?

@CrAzYDr1veR 2 жыл бұрын

Is it more efficient than using a solar inverter/charger and the original miner psu?

@JulianIlett 2 жыл бұрын

Yes. When I put the little Z9 Mini miner on the Bluetti, it used less power on the 12V 25A output than it did via the inverter and HP server PSU.

@pmacgowan 2 жыл бұрын

How much per day do you make?, at the moment seems counterproductive given the total cost of hardware

@johnshaw359 2 жыл бұрын

Looks like it was meant to be mounted to a truck chassis or some sort of additional heat sink.

@SlinkyStoney 2 жыл бұрын

Really curious on what's inside of that doodad and to check if the mosfets are attached to the heatsink.

@JulianIlett 2 жыл бұрын

99% sure the MOSFETs are attached to the heatsink - it would be a crime not to :)

@SlinkyStoney 2 жыл бұрын

@@JulianIlett Thanks, was planning to buy those buck converter. And it did survive when loaded with your miner.

@JulianIlett 2 жыл бұрын

Yeah, I was pulling about 22A from the 12V side and it seemed fine :)

@ElmerFuddGun 2 жыл бұрын

Your male/female connector explanation at 3:44 sounded familiar... from about a week ago (on your previous video) I think someone I know said that. I wonder who? ;-P It makes it simple to remember when you think about the safety side of plugs and jacks. Even when you haven't seen or used a new connector you can figure out what _should_ be on the source of power.

@JulianIlett 2 жыл бұрын

OK, I admit I was thinking of you when I said that stuff :)

@panospapadimitriou3498 11 ай бұрын

? today arived a converter 12 to 13.8 but not much amps!!! dont even remember why i bought it .. my eco flow shows poorly 12.4v and even if i buy 12v fridge its going to need enormous starting amps .. !!!! my stupidity . had to think of amps too BTW i ordered some green covered 46160.,.. i m going to wait several eternities to learn more about ALI quality.!!! where did you find yours ?

@rv10flyer84 Жыл бұрын

My DROK 12A buck converter has 35mA idle consumption. Your model is 50mA.

@ramidaoud3776 11 ай бұрын

i need 20A 185W waterproof buck converter capable of outputting 12.6vdc

@marks47 2 жыл бұрын

bigclive was logging the capacity degradation each time he charged a portable usb power bank. do you think you might lose more capacity per charge cycle on those batteries than a lipo pack, or less?

@OlanFantaziya 2 жыл бұрын

LiFePO4 has way more charge cycles than lipo. Something around 6times more untill 80% SoH. So you will loose way less capacity every cycle

@gregb1714 2 жыл бұрын

Why don't you connect the batteries & solar panels to a solar charge controller and use the load output to run the buck converter? Then no cable swapping.

@brianterrill9587 2 жыл бұрын

Could you please post a link for your battery meter? Thank you!!!!!

@JulianIlett 2 жыл бұрын

www.google.com/search?q=isdt+bc-8s

@spikeydapikey1483 2 жыл бұрын

Hand warmer? Nope, it's to keep your cuppa warm !!

@joshuabest100 2 жыл бұрын

That springyness you are talking aboutbis internal resistances

@JulianIlett 2 жыл бұрын

It seems to be more than that. I top-balanced the cells with a tiny current to make sure they were fully absorbed. Then let them fall back (voltage wise) which they did at different rates. Bring them up again and they're nowhere near top balanced. I've now bought lots more cells and flying capacitor balancers. This project is far from finished :)

@joshuabest100 2 жыл бұрын

@@JulianIlett loving the battery content I've got many thousands of 18650 cells currently running close to offgrid mining with a 800w 150mh plus ethereum miner 24/7

@JulianIlett 2 жыл бұрын

I think I'm heading in the direction of LiFePO4 32650s :)

@joshuabest100 2 жыл бұрын

@@JulianIlett the lifepo4 is the future for 12v and 24v systems its a perfect match to lead acid

@JulianIlett 2 жыл бұрын

And less likely to incinerate my shed :)

@lostjohnny9000 2 жыл бұрын

You never see Julian Ilett and Julian Assange in the same room. Keep building that off-grid mining operation Mr Assange - help is on it's way.

@donepearce 2 жыл бұрын

Can you not feed the solar direct to the miners, and just put the spare overflow capacity in the battery to use when the sun goes? That would guarantee that you don't waste any of the available solar energy. You can do the necessary switching with some P-MOS. I find that high side switching generally makes for easier - and safer - architecture.

@JulianIlett 2 жыл бұрын

Yes, I definitely want the solar panel still connected while the miner is mining, but there are some issues with the BMS isolating the battery and leaving the solar panel driving the miner directly (which doesn't work too well).

@donepearce 2 жыл бұрын

@@JulianIlett Is that soluble, do you think? Obviously the optimum condition for the battery is empty. It wouldn't by chance be something as simple as a bunch of lossless diodes making a "highest wins" connection at some point?

@JulianIlett 2 жыл бұрын

In the next video I add a voltage-controlled relay to turn the miner on and off. I think a second voltage-controlled relay may be needed on the solar panel to protect against the BMS isolating the battery. Ultimately, I don't want the BMS to do anything :)

@helmuthschultes9243 2 жыл бұрын

800W is 2/3 of 1200W, so needs 2/3 of 100A so need 66A. Hope the epoxy potting has taken care of one serious reliability issue under thermal cycling. Large componemts are grabbed by the epoxy and get ripped out of their solder joints over time. A major reason Automotive "power" modules are no longer generally potted. Serious increased failure rates. Often the nom corrosive silicom rubber was applied on larger components to lessen that problem. For reliability now sealed housings and conformal coatings are preffered over potting. Some suploers think by potting they csn protect their design from copies. Sadly the potting is also easily removed to get at the electronics for determined thieves to reverse emgineer it.

@JulianIlett 2 жыл бұрын

On reliability, only time will tell I guess. Can't see the point of trying to hide a buck converter design, there are hundreds of single chip solutions.

@helmuthschultes9243 2 жыл бұрын

@@JulianIlett well yes, they might be fine as long as faults are non destructive to attached loads. The unit itself is low cost. If it has working output protection, blown fuse is worst consequence. Also I do agree who is dumb enough to bother copying a basic BUCK converter, the designs are dime a dozen. Ev3n Chinese no longer copy those. Not like $ 1000 engine controls or other car parts. One possible saving grace is relatively low temp excursions, and being a local source possibly a warrantee support. As a unit it does look good, and 8s likely weather proof too. Good luck with them.

@mikebond6328 2 жыл бұрын

A US cent is also called a penny :)

@MichaelBeeny 2 жыл бұрын

I nice LUCRATIVE days mining, I've made almost 3 cents. Another 20 years and you should have enough for a cup of coffee! Another 50 years and you would have paid off the equipment costs. Or am I missing something?

@JulianIlett 2 жыл бұрын

All my miners running together for 24 hours would earn around £30. I just need the juice :)

@webchimp 2 жыл бұрын

Recently replaced my Nexus 4. Battery was also pants, but the screen was dying, the touch layer.

@JulianIlett 2 жыл бұрын

I have two - one is my wife's old phone. Same problems - battery and touch sensor.

@Richardincancale 2 жыл бұрын

So in 2000 charge/discharge cycles you will have paid for the Buck converter, and in 20,000 cycles for the solar panel. This may take some time!

@JulianIlett 2 жыл бұрын

I'm gonna need a bigger battery... and solar panel... and Antminer...

@awuk3468 2 жыл бұрын

Is mining BTC these days a good ROI? I don't believe it is but ironically the more miners that come online the less you earn as the difficulty goes up. OK it is essentially "free" as you are running from solar, but take the cost of the equipment and if you are only getting a few pence a day / week then how long do you have to mine for to just break even on the equipment?

@hommerdalor6301 2 жыл бұрын

The miners are the heating system of the shed.

@JulianIlett 2 жыл бұрын

Crypto mining is the new frontier - the wild west. One minute it's profitable, the next it isn't. Free electricity is the key to mining profitability.

@awuk3468 2 жыл бұрын

@@hommerdalor6301 Expensive heater!

@awuk3468 2 жыл бұрын

@@JulianIlett It is becoming less and less profitable the more miners come online, I know BTC is fluctuating all of the time, but how much GBP (pence or pound) can you make with the miners you have running on average? And how much did it cost to get all of the equipment in the first place and how long before you break even? I looked at the cost of the miners and the profit likely to make, and it just doesn't add up for me, not even if I had a solar array.

@JulianIlett 2 жыл бұрын

I could do a whole video (in fact several videos) on cost, profitability, break-even and ROI. Mining is a viable business in places where electricity is cheap or where sunshine is plentiful. Unfortunately, the UK is one of the worst locations for sunshine. Did I ever tell you about my Mediterranean Workshop idea?

@KuntalGhosh 2 жыл бұрын

this should be good for trucks!

@1981dasimpson 2 жыл бұрын

i been thinking of making a hydro powered miner you find a quite section near a river mount the wheel then set the miner further up the bank with a mobile phone for the data transfer once you get back what you have paid it is then profit

@JulianIlett 2 жыл бұрын

Hmm, maybe I'm looking for a rural French property with a stream. I've seen some micro-hydro systems where most of the kit is underground.

@1981dasimpson 2 жыл бұрын

@@JulianIlett kit as in miners or hydro ?

@DF13939 2 жыл бұрын

Been using them on solar panels for a few years and they work fine. If the panels drop too low the converters will kick off. Upgrade it to a 40 amp converter and it should run cold

@JxH 2 жыл бұрын

Someday soon, all electric heaters will be computing clusters. Thermostat calls for space heating, CPUs are powered on, negotiate with the Internet for selling CPU cycles or hashing or whatever, and off they go; emitting kilowatts of heat. Thermostat reaches Max T, instructs CPUs to begin an orderly shutdown. Therefore, it is obvious that CPU cycles and space heating will be linked and CPU cycle will soon be very nearly free, at least during winter in the northern hemisphere.

@SuperBrainAK 2 жыл бұрын

I would be careful with modules like that, I had one 12v to 3.3v powering my BC-700 but it failed short circuit so that means 12v was going straight into the charger!! so just be careful

@ultracurvenl3664 2 жыл бұрын

so if you have 4 bucks running your boards.. of course independently switsched for current optimising, you should be thinking of some weather prediction.. arduino with a year cycle (start measuring !) .. a light sensor a AI based camera for realtime cloud monitoring (mind is really getting to steam now) love the channel Julian.. i see a future with renegades doing illegal solar taps... neo-solar-hacker will be a word soon.. whahaha

@JulianIlett 2 жыл бұрын

Actually, I'm looking at cheap properties in France - UK weather is predictably disappointing :)

@Mark1024MAK 2 жыл бұрын

@@JulianIlett - with climate change, there is a likelihood that the weather in France will become more unpredictable…

@captbeardy 2 жыл бұрын

Make free money from solar power, up,to £100 pa. Only £600 investment in kit required 😏

@AK90 2 жыл бұрын

Did you just use that blade the wrong way around Julian? xD

@JulianIlett 2 жыл бұрын

Yes, I have a problem with sharp objects ;)

@gowrimadan4683 2 жыл бұрын

May i given 150v to this buck converter ?

@hexidev Жыл бұрын

What? DC?!?

@BajanAlan 2 жыл бұрын

If you suck too many watts(more than rated value) from those buck convertors they burn out.

@petehiggins33 2 жыл бұрын

quelle surprise

@jeoffer 2 жыл бұрын

3 cents a day? To recover the buck converter it will take 2.8 years. Oh, I ordered the same buck converter from a seller on eBay in Australia for AUD $32.

@JulianIlett 2 жыл бұрын

First I build it... then I scale it :)

@PetRatty 2 жыл бұрын

Then the cost of solar panels, charge controllers, batteries, bms and wiring + your time. You are looking at around 40 years, would make more money selling the power you make to your provider. On a plus note, I've just made £450 by selling EUA stocks on the market, not a bad days work!

@gamerpaddy 2 жыл бұрын

i would never power something valuable from a non isolated buck converter, if it locks up it usually fails with input shorted to the output., then you fry whatever you got connected it. at least give it a crowbar circuit and a fuse

@wasilikechagias9138 2 ай бұрын

german lengue YAESU FT2980 TX VOLLE SENDELEISTUNG 80 WATT 16-17AMPER+13VDC TEST CA 5 MIN DAUER SENDEN OB DER CONVERTER HEISS WIRD DAS IST DER GEWÜNSCHTE TEST UND NICHT BATERRIE LADEGERÄT!!!

@-yeme- 2 жыл бұрын

dont mention the war :D

@Phr3d13 2 жыл бұрын

Is it just me, or has the audio in Julian's videos gotten really bad within the last couple/few videos?

@james10739 2 жыл бұрын

Why don't you have like 200 watts of solar going to that battery to keep going

@JulianIlett 2 жыл бұрын

Tell that to the sun! I'm guessing you don't live in England :)

@james10739 2 жыл бұрын

@@JulianIlett that is correct

@ecosta 2 жыл бұрын

Investing £80+ to make pennies. That's what I call a happy adulthood..

@williamsquires3070 2 жыл бұрын

Yes, let’s mine that cryptocurrency so the ant queen can afford that RV she’s had her eyes on (in this case, a big, fat caterpillar with a tent on top to shade the queen during the summer months.)

@TheEmbeddedHobbyist 2 жыл бұрын

should have had some music to stop with the bags opening. 😃

@JulianIlett 2 жыл бұрын

I don't like music.

@TheEmbeddedHobbyist 2 жыл бұрын

@@JulianIlett But we could have played pass the parcel with you.

@garrynutter860 2 жыл бұрын

Female is always the giver.

@UpLateGeek 2 жыл бұрын

Frist!

@JulianIlett 2 жыл бұрын

Aewsome!

@MrShwaggins 2 жыл бұрын

The sharpness of your mic is still nails on a chalkboard. Please purchase a new mic Julian!!! It's really jarring. Even a capsule USB mic for 40 USD

@JulianIlett 2 жыл бұрын

Are you listening on headphones? Try speakers - they smooth out all the rough edges.

@MrShwaggins 2 жыл бұрын

@@JulianIlett I'm half teasing half serious. The krinkely plastic really does sound harsh with headphones. That mic is a good mic and it's really cheap. For a brand I never heard of it really surprised me. I wish u continued success in slowly building a large shed before the miss catches on!;)

@MrShwaggins 2 жыл бұрын

@@JulianIlett Fifine k669b

@steventaylor4476 Жыл бұрын

Just have it open before you start your comedy routine.

@jimmyross1672 2 жыл бұрын

less talking more doing lol o one cares why or what your doing lol they just want to see what you are doing not hear it lol wow do you really know how youtube works guess not

@JulianIlett 2 жыл бұрын

You're right - I have absolutely no idea how KZfaq works :)

@ElmerFuddGun 2 жыл бұрын

What school grade are you in, Jimmy? Because you write and spell like a 5 year old. Maybe you can spend some of your allowance on a new keyboard that has a working period key?

@jimmyross1672 2 жыл бұрын

not just that im sure you dont have a job so why dont you make like 4 videos a day and try to get ahead of the came lol am i the only one know how to use youtube the wright way lol

@piconano 2 жыл бұрын

Getting drunk and leaving mean comments, says all there is to say about you. If you don't have the self-discipline to avoid watching the people you hate this much, you're a bigger loser than your spelling and grammar.