LFC

Рет қаралды 150,739

Күн бұрын

[Links to these PSUs down below] Been asked to show a more detailed video about how I do voltage injection, but before I post that video I want to make sure everyone understands exactly what a Bench PSU can do. It's essentially just a variable voltage output, but its ability to set both voltage and current limits give you a great deal of control over power delivery.
Amazon Associate Links:
HM305P 30v 5a:
US / Int. - amzn.to/2TC3FXu
UK - amzn.to/33XkT7w
Cheap test leads 3-pack: amzn.to/2LUMz2O

Пікірлер: 276

@napstericious 4 жыл бұрын

Im so freaking happy I discovered this channel. This guy is incredible. Not only I’m learning quite handy things, but I’m also enjoying the process since this guy is really likable. Instantly subbed. Great content, sir! Love it!

@retrogamer33 3 жыл бұрын

Same here.

@SuperPhunThyme9 3 жыл бұрын

Yeah man this guy's cool.

@arturoayala3783 2 жыл бұрын

Yes me too I personally appreciate

@MrFrazierNation 4 жыл бұрын

You're really the only one that I've seen that's done a proper review of the HM305P. You're the one that's knocking me off the fence and ordering one.

@emostorm7 Жыл бұрын

I think this was the _most informative_ AND _easy to watch and understand_ video on power supplies I've seen. I love the way you presented it and the verbage you use to describe things resonates very well with me. Thanks a lot, keep it up!

@jonas-fr 3 жыл бұрын

This is a nifty channel, thanks for all these tips ! It's nowadays rare to see a channel putting up non-nonsense content so I'm happy to have stumbled upon this series !

@oswith971 2 жыл бұрын

Thanks a lot for this video, I ordered a 10 amp model of the one you have and the output toggle is a huge advantage and I just love the unit a lot in general. I guess I was just spoiled by the expensive units my uni had and didn't realize that some features didn't exist on the cheap end. I was about to buy the cheaper one before but glad I didn't. Also discovered this great channel and have been binge watching for weeks. Long time ago I ordered a set of laptop plug adapters which came in incredibly handy for the bench supply as I can just have a single 5.5/2.5mm barrel jack on it and plug any of the adapters into it to turn it into any laptop power supply socket (apart from USB-C and the flat lenovo one I guess)

@ebg100 3 жыл бұрын

You are very gifted at relaying information in an easy to understand way! I'm happy I found your channel. Great video's all around :)

@jamestonge5066 2 жыл бұрын

I just love this guy, Adam I think his name is, I am 70 years old and have a great interest in pc repairs, I love the fact that there is no annoying music, his explanation is easy to understand. Watch all of his videos, liked and subscribed. Cheers from Ireland

@bobcatt2294 3 жыл бұрын

Just excellent video - Thumbs up on production quality on: audio levels, lighting, camera and content. Thumbs up and subscribed.

@oscarmarfori613 Жыл бұрын

Ever since you talked about your soldering tools specifically the PINE-64 I immediately ordered it thru Aliexpress and since receiving it and using it my soldering had never been the same, my soldering hobby had became more accurate and easier than my crappy soldering gun, thanks for sharing your videos

@valdasmusvicas1605 4 жыл бұрын

Well done! I'm sure you are helping to many people like me that is getting into electronics. Always helpful

@TopRacer2002 4 жыл бұрын

He is indeed and I'm one of them

@MrFrazierNation 4 жыл бұрын

I am as well. He was the reason I bought the HM305P. AND what lab is complete without a BPS?

@alfredleung3738 4 жыл бұрын

hi there , greetings from the Philippines, been watching and learning from your videos, like the way you explain things, pretty straight forward. Just to let you know , you have one brand new subscriber today!

@joziphstu 2 жыл бұрын

You’re an awesome teacher, I really do appreciate your time

@familyplans3788 2 ай бұрын

i am so glad you did this video , cutting of the wires for the broken chargers is so obvious but it never even occurred to me to do it !!

@antoniosnikolaoy3754 4 жыл бұрын

Well done, you're amazing, with the explanation you give, on all issues.

@SteveH-TN Жыл бұрын

Just discovered your channel and thanks for sharing this helpful video and information. Earlier today I ordered a Longwei 3010KDS from Amazon Prime with 2 days delivery. I appreciate your help in providing reviews on these items. I am in the process of building my Electronics home workshop for Amateur Radio and Model Railroading & model drones. I subscribed to your KZfaq channel as well.

@stankotomasic9867 7 ай бұрын

this js really awesome. I find your lectures amazingly great, it helps me discover things i never knew they were possible.

@thermalnoise2976 3 жыл бұрын

So glad i found this channel. Very informative. Thanks!

@DaKosi 4 жыл бұрын

Very informative and fun to watch. Can't wait for the next one!

@chumbo 3 жыл бұрын

Thanks! Had to go through three other videos until I found this one to finally understand how to use one of these devices ;-)

@OliverWoodphotography Жыл бұрын

I've been after one of these for a while. I tend to use salvaged PC PSUs for my 12 & 5V needs. The info about battery charging was very useful.

@FPChris 3 жыл бұрын

5:50 Glad you pointed this out. I have this model and was struggling with having to to set the current like that too.

@DanielsGameVault 3 жыл бұрын

Quick note: CV and CV stand for Constant Voltage and Constant Current - not "control" :)

@green122s 4 жыл бұрын

Very informative! Look forward to the next one. Thanks.

@markdull362 2 жыл бұрын

Thank you, I've been looking for a good bench power. You've given me some valuable information I can use when shopping for one.

@gregorywu3319 3 жыл бұрын

Thank you! I learned so much! I'm going to order that PSU and start having some fun!

@Portergetmybag 3 ай бұрын

Everyone always assumes I know the most basic things in their beginner video. I had no idea i could set the amp by shorting out!!! You made my day.

@MacDaddy5 3 ай бұрын

the crazy thing about being self-taught and KZfaq-educated is that we often lose out on the baseline that people who are truly educated on a topic take for granted

@roncooke2188 3 жыл бұрын

Great video you will a Professor one day if not already, very interesting i work on electric bikes, I to chop leads off battery chargers. I throw very little in the bin. If i was 30 years younger i would be your apprentice free for 12 months. Do keep the videos coming thank you Ron

@stamy 4 жыл бұрын

Very nice and well explained, thx. Great voice recording btw, loud and clear.

@extrememod_ahu 3 жыл бұрын

You're the best! I just bought the cheaper unit and definitely sending it back and getting the one you recommended

@eraldylli Жыл бұрын

Definitely go to EEVblog, very informative, very qualitative. And most importantly, you get the enthusiastic Aussie "Hi!" at the start of EVERY video. "Haw-ee!"

@Richie_ 2 жыл бұрын

Thanks for this video. I just got a psu and didn't know about shorting the wires to set the amps.

@armencho1 3 жыл бұрын

this channel ROCKS !!

@codelinx 11 ай бұрын

This is exactly the video I was looking for

@20thcenturyboy85 4 жыл бұрын

Awesome video! Thanks, I bought an inexpensive Bench Power Supply but need to learn how to use it.

@philg1999 4 жыл бұрын

Hay man new sub been watching your motherboard repairs from 2 years would love to see more laptop repair and strip downs if you don't mind.

@GeneralChangOfDanang 9 ай бұрын

I have one similar to your cheaper model but it's a Velleman. From what I can tell, the only difference is it lets you limit amps or volts by switching between the two. I really like it.

@qzorn4440 3 жыл бұрын

hey i just ordered the HM305p $70 .51 new on ebay... even your cheaper ps is good in a pinch.. however the 305 looks kool thanks for a great video...:)

@stevesfascinations1516 4 жыл бұрын

Thumbs up and subscribed. Really well presented - good job!

@houditv Жыл бұрын

Awesome video, perfectly explained. Thanks you so much

@ecospider5 3 жыл бұрын

When charging LIPO batteries to 4.2v per cell you really need to put something to balance it on the balance wire leads. Even if that doesn’t talk to the power supply it will reduce the chance of over charging one cell and having it burst into flames. The more you go over 1C in charging and discharging the battery the more important this is.

@MrShwaggins 3 жыл бұрын

This is why salvaging those charge protection circuit boards off LiPo batteries is something everyone should do!

@Shorrey Жыл бұрын

Great video! Thanks! I learned a lot.

@sreekumarUSA 3 жыл бұрын

033021/0821h PST 🇺🇸 1621 UTC That was a fantastic lecture and practical demonstration of SMPS and its salient features. How I wish, at least, 10% of KZfaq Warriors could match up with you! Frustratingly what we get to watch and grumble is, big BS. Thank you, mate you made the day. Stay safe and 73s...

@miguelmoya7004 4 жыл бұрын

Great video keep up the good work.

@bobcatt2294 3 жыл бұрын

Yes, my Hanmatek just arrived - what a pretty thing.

@sedzinfo 2 жыл бұрын

you ask if this was useful...... yes it is, that's why we watch these videos and we press the like button. I enjoyed this video

@keithwhitehead4897 3 жыл бұрын

I make my own leads using 3 core flex. Particularly useful with dual power supplies that have pos,gnd,neg rails. With a bit of larger cable I even have a set 3m long so I can power stuff that will not fit on my bench.

@mavezy 2 жыл бұрын

Great video mate!

@jay-z2382 Жыл бұрын

Brilliant video. Thank you

@markharrisllb Жыл бұрын

I have a basic 30v 10amp 4 digit with Watts power supply with a ground terminal which costed about £60. It also has a very useful USB port and is horizontal rather than vertical which is better for stacking in limited space. I considered getting a machine with a memory but I though I’d rarely use it and the model I was looking at only had 4 stars over about 200 reviews as well as being £40 more. Before getting that I had one of those £10 Ali Express things you have to wire into a case yourself. Off the top of my head I think that is 30v 4amps. At the moment I'm trying to learn how the 4N35 Octocoupler works and I’m glad I have both units.

@Ojref1 4 ай бұрын

I have that Hanmatek in the 310 version. (36v/10A) Great supply for the money, feature rich, and its power is fairly clean.

@honda02134 3 жыл бұрын

Hi thank you for your videos they have been really helpful. I was wondering if you could give me some advice on how the settings should be set-up on the power supply machine the same model as you have for an iPhone? Your answer would be greatly appreciated. Thank you! 🙂

@markjulius2006 9 ай бұрын

Excellent video with lots of detailed information for beginners like me. Thank you. Unfortunately, the Hanmatek 305P is no longer available at Amazon. Do you recommend a different unit with pre-sets and is programable?

@shelby50411 3 жыл бұрын

Great video mate...i hsve the hammotek u have...does ur fan on the unit stay on all time or no?

@sincerelyyours7538 4 жыл бұрын

CC is an extremely useful feature to have. It's worth noting that hobbyists often like to make DIY supplies out of ATX supplies because they are cheap and plentiful. ATX supplies, however, do not have any CC capability which means that if your test circuit shorts your DIY supply can easily destroy it or cause a fire. Other than a simple fuse, there's no way to prevent an ATX supply from outputting it's maximum current which can be as high as 25 amps. Nor will the supply's built-in 120V fuse protect your circuit. If you make such a supply, you should include some sort of CC circuit to prevent this from happening. Or use a true bench supply like those described in this video.

@Adamant_IT 4 жыл бұрын

That's what puts me off of making an "ATX bench supply"... if it doesn't have CC then what's the point? I do need to look at some of the project vids though, to see if any of them have built in a CC circuit.

@fullwaverecked Жыл бұрын

@@Adamant_IT Two years on, have you seen any cool project vids that have CC circuits that you would recommend? Thanks & Cheers!

@iqbalreshma925 4 жыл бұрын

Nice response from u.. Very use video on buck converter. I am getting to understand short in a circuit how to determine what ohms is considered is to be a short and how does it depend on short in a circuit. I am a newbee to repair

@Onkel.Moetrik 2 жыл бұрын

Hey note that on the TS100 all the caps are rated 24 volt. That means you are putting maximum stress on the caps. On my TS100 I never go over 22-23 volt in order to spare the caps. The difference in performance is so insignificant, but the TS100 will properly last a lot longer..

@nauroticdax 3 жыл бұрын

As someone who has been out of the repair game for some time starting up again thanks for clearing up a few things, that hanmatek is definitely looking worth the extra £20. There seems to be a little confusion on amazon weather or not it is a hanmatek or rockseed although it looks like they are just rebrands we'll have to see how it goes I guess sadly when I started out it was all on gear I either repaired then inherited or made myself so shopping for things new is a bit of a nightmare and I'm at the point where buy once has rung very truthfully very loudly... I do want to ask of the cleanliness of the power supplied, have you tried it out on a scope to see if there is any noise or crosstalk coming through the output side? I only ask because I also do a lot of work on music equipment and I've run into a cross talking power supply having me chase my tail for longer than I am willing to admit XD

@drvish 4 жыл бұрын

Love your videos. I think this power supply has usb connection on the back. You should try to make a LabVIEW VI for charging LiPo's. It's relatively straightforward and you will be able to get a graph and auto cut off too when fully charged. Also, I'm in the process of resurrecting my brother's dead EVGA 970. Following your process on the 960, I found a shorted MOSFET on one of the power phases and took it out. Walla short gone and system powers on and games rather well too. Didn't want to push it too hard as I'm waiting for replacement MOSFET, so hopefully I will get it back to full performance. Couldn't have done it without your video!

@Adamant_IT 4 жыл бұрын

Good luck dude! Hopefully you don't have a busted driver that keeps blowing up mosfets like I did!

@drvish 4 жыл бұрын

@@Adamant_ITIt turns out, I did have a bust driver as it blew up the replaced mosfet soon after I put some load on it! Luckily, I order a set of them as well and managed to replace it. Man they are fiddly as hell! Card was working again, but under load, it was only stable for like 10 mins or so and kept soft crashing. Had no trouble booting up into windows after each crash, so tried operating at lower power limts, down to 70% but stability gradually decreased and took out two more mosfets. Replaced those mosfets again and was playing snowrunder for about 1.5 hours and just as I thought it was fixed, soft crash! After a good night sleep, decided to check resistance to ground for all drivers and mosfets and noticed one of the pins of the the replaced driver was much lower resistance, which I think was causing the instability. So replaced it again and I played snowrunner for 3 hours non stop today without any issues, power limit set to 80% though as I didnt want to over stress it. So at this moment in time, out of the 12 mosfets, the original six show resistance to ground of ~14kOhms (this is for the pin number 1 and the other 3 are going to ground). Out of the six that I replaced, 4 are showing ~35 kOhms and two are showing ~14kOhms. So i'm not sure if they will degrade further or not. was temped to replace all 14k ones, but will see if card continues to run stable or not under load over the coming days. Fingers crossed. Still have 11 new mosfets and 7 new drivers. Good thing I ordered a full set plus some for cockups! :)

@emerickscott 3 ай бұрын

great explanation. thank you!

@chrisallen5780 3 жыл бұрын

a lot better than the manual, thanks

@christophhaug 3 жыл бұрын

Thanks for a very usefull video. Could you say something about powering USB-powered devices with a bench PSU? If this sounds like a dumb question, here is what I mean: some of the bench PSUs have a dedicated USB output, which of course, looks like a handy thing to have. But then again, you should be able to attach a USB plug to any PSU, so that a built-in plug is not really necessary, right? But when I looked around for banana to usb adaptors, it seems that this is not something people commonly use. So I was wondering whether there is a reason for that. Maybe there is a point with the built-in USB, after all?

@nemod3338 3 жыл бұрын

Nice explanation, thanks.

@justinhoffmann7034 Жыл бұрын

Fantastic Sir!

@MrFrazierNation 4 жыл бұрын

I received my HM305P and my electronics lab has gotten tons more interesting. What lab is complete without one? Thank you, good sir!

@Danbotics 3 жыл бұрын

What are your thoughts in getting a switched power supply versus a linear one? I've only just learned about the difference. I was looking at a cheap switched power supply but now I'm thinking of getting a linear one for the same price instead since people have done videos on the noisy outputs some of them have.

@chrisgallagher85 Жыл бұрын

very helpful, thank you for sharing

@MrPnew1 4 жыл бұрын

Thanks and looking forward to your take on voltage injection for fun & profit :) Nice shoutout for Dave at EEVBlog too

@samuel.p.7247 3 жыл бұрын

Hi Adam Dose this ps have a protection against shorts? Like when you inject voltage? Thank you

@HD-rc4vo 4 жыл бұрын

Thanks for the quality content, I've been watching your videos trying to get better at understanding electronics and doing hardware repairs, learned quite a bit so far I've ordered TS100 soldering iron, I've seen it in your other video about cheap soldering iron and it looks like a good soldering iron to start it, tho I will also need hot air gun, do you have any recommendations for Hot air gun for about 50$, under 100$ preferably?

@Adamant_IT 4 жыл бұрын

Cheers! This is the copy-paste hot air station sold under a dozen different brands [associate link] amzn.to/2zRfHpj It's the same basic unit on my 2-in-1 station. It's good enough for basic stuff, to go any better you need to start looking at something like a Quick 861DW, which is up at about $300.

@databang 2 жыл бұрын

Thanks for the explainer@

@SuperPhunThyme9 3 жыл бұрын

I have one similar to the left and you're right about it....when powered on in CC, it blasts my LEDs to freaking max amps for like a millisecond before current limiting them! Try it, you will literally throw that thing out the window after seeing that!

@Adamant_IT 3 жыл бұрын

Interesting, I did actually check the overshoot on mine one time and found no issue. Wouldn't surprise me if there's a lot of variation though.

@tomjones4145 2 жыл бұрын

Fantastic video / thank you

@Jorvs 3 жыл бұрын

do have a link on his channel? the blog you talking about or did any one here found it? blog about power suplpy...

@chrislingwood1476 3 жыл бұрын

Hi. I've learnt so much from your channel it makes me want to experiment on some old broken laptops - just for the fun of it! The Hanmatek HM305P power supply would have been ideal but the Amazon link above says it is currently unavailable. In fact I cannot find it anywhere in the UK. I don't want to import it and risk paying customs duties. There is a HM305 (non-programmable) which also has the output button . Do you have any views on that? Thanks.

@Adamant_IT 3 жыл бұрын

Cheers! This one is going to be basically the same... same unit different name on the front by the looks of things: amzn.to/33XkT7w

@margyjr 4 жыл бұрын

Great Info, Thanks

@HKey_Root Жыл бұрын

I was considering why I would need one of these devices. I own a couple of 32/35 PSUs to power radios. I couldn't get my head around the current function on the bench power supplies. Why would I want to draw say 2amps through connected kit? Thanks to your video I now understand that the current display is set to a maximum allowable current been demanded by connected equipment. However what happens if you set the current to zero?

@john0270 Жыл бұрын

this vid saved me from buying the small/cheaper unit, and going strait for the upgraded unit, for me its for primarily charging batteries of different types/capacities so the 10amp version would be best, be nice to have 100amps when i go to build my off grid lithium battery but.... be days not hours to charge is all. ill be able to run it off my lead acid solar setup no problems at 10amps.

@skybirdrx5848 Жыл бұрын

I really like that unit you have there. Unfortunately it is unavailable in the US is there anywhere else may I be able to find one?

@azsbasicproject215 2 жыл бұрын

thankyou for that idea sir,

@adagioleopard6415 3 жыл бұрын

I'm gonna nitpick a bit, but CC and CV stands for Constant Current and Constant Voltage, not control current/voltage.

@Uromastyxfanatics 3 жыл бұрын

CV Stands for cock vagina

@anonymouseniller6688 3 жыл бұрын

I've always referred to them as constant current/voltage but now that we're on topic, isn't the term 'constant' inappropriate here? Depending on the load the voltage and current would change. It's just that the voltage and current would never exceed the limits dialled in. In this context something like voltage/current 'limit' communicates thr intent much better. Calling it control current or voltage is more appropriate imo

@boldvoltage639 3 жыл бұрын

@How Not To Cream Cheese

@vamdolly 3 жыл бұрын

Have you seen HANMATEK HM305? it's great for beginners 30v 10a small like the white one you have but u can file individual numbers and has the no current button as well. im loving it sofar but going for some nice leads for it now. do you happen to know were i can gett good quality ez hooks with gold plating?

@Kamel419 3 жыл бұрын

I came to see the features of this bench power supply, but stayed for the value added bonus info at no extra charge.

@waderyun.war00034 4 жыл бұрын

You can ballance charge though the ballance lead one cell at a time. Just dont forget to ballance them all before using the battery

@squatmasterproductions2973 3 жыл бұрын

I'm moving onto a narrow boat soon, I was wondering if these would run off my portable solar generator, its got a 1800 w inverter that will put the full wattage out continuously, so I would have thought It would work. I want to be able to fine tune charging smaller batteries and run bread boards lol, this electronics hobby, it's starting to drag me in,, im a complete beginner but it seems a great hobby for a small space, like my boat lol.

@johncarr3458 Жыл бұрын

Hi the clip you used for the ts100 did you make this yourself or purchase, is so can you provide a link..thanks

@sparrowbe4k802 4 жыл бұрын

Great video! One thing you might mention is that they (smps) are terrible for working with radios(interference).

@adagioleopard6415 3 жыл бұрын

Many of the lower end ones are linear anyway though

@tomaszpluta5839 3 жыл бұрын

Great informative video! Would you be able to use the cheaper power supply to charge a laptop battery as well? Or not because that one doesn't have the CC and CV modes? Thanks!

@Adamant_IT 3 жыл бұрын

I need to do some research on what the rules are for charging laptop batts from bench PSUs... Laptop batts have a BMS (battery management system, a built-in controller) which has to allow the cells to be charged. Some I think you can charge directly, some need to be hot wired, or have a serial controller tell the BMS to accept charging.

@tomaszpluta5839 3 жыл бұрын

@@Adamant_IT OK, thanks. But you can use the cheaper PSU to charge the same battery you charge in the video exactly the same way?

@bardos 4 жыл бұрын

Great video, thx

@magnum164 6 күн бұрын

Good information even though it is 4 years old. On the topic of why someone would need 30A is charging larger battery packs. I have several 60V and 80V 5+Ah and larger packs that can take 10A+ for charging. Its still hard to find a desktop supply that will give me 82V for my biggest battery so I have even considered buying two 42V and running in serial.

@kamj9614 Жыл бұрын

have you had any issues with the switching power supply when working on phone and laptop PCBs? I see recommendations that a linear power supply would be better

@RespawnRestricted 3 жыл бұрын

i love having a power supply were you dont have to short the leads to set the amps also i prefer to get the 10 amp model even if you dont think your gonna need it. in the long run your power supply does not need to work as hard as one that is 5 amp

@drameriemmanuel1187 2 жыл бұрын

Thanks alot sir .do you have online lesson you are running.if so I am willing to join your class

@tiagocosta160 3 жыл бұрын

Just Great! Thanks

@Sickindian5 Жыл бұрын

I was trying to find your injection video to no avail. Could you post link please??

@3nertia Жыл бұрын

What's with the twisted pairs @ 19:57? Is there a purpose for that or?

@scotthenderson4376 Жыл бұрын

I'm looking to build a 48v p04 bank with 16 cells what psu would you recommend to test/charge it

@GantryG 3 жыл бұрын

Awesome, thanks!

@sarigaruday 3 жыл бұрын

can you do some video on motherboard repair of jvc projectors

@wayne_taylor 2 жыл бұрын

Oh I just bought the cheaper unit... I wished I see this before I ordered. Looks like the programmable unit is no longer avaiable, do you have and alternative suggestion ?