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

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

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

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!

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.

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 KZread-educated is that we often lose out on the baseline that people who are truly educated on a topic take for granted

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 !!

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

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

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 !

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 :)

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

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.

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

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!

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)

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!

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.

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

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 KZread channel as well.

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

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!"

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

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

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.

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

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

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

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

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

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

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?

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.

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

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

This is exactly the video I was looking for

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

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

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

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.

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..

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.

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

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...:)

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.

Awesome video, perfectly explained. Thanks you so much

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

Great video! Thanks! I learned a lot.

Brilliant video. Thank you

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.

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.

great explanation. thank you!

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

this channel ROCKS !!

very helpful, thank you for sharing

Great video keep up the good work.

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 KZread 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...

Nice explanation, thanks.

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! 🙂

Great video mate!

Thanks for the explainer@

Fantastic Sir!

Fantastic video / thank you

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

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.

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

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.

a lot better than the manual, thanks

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

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

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

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

Great Info, Thanks

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?

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

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! :)

thankyou for that idea sir,

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?

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

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

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.

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

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?

Just Great! Thanks

Great video, thx

When charging, or discharging, lithium batteries you must always have a backup disconnect system. Even a simple timer switch will work. It's so very easy to walk off and forget about it. Charging batteries is one of the most boring things to do. Even worse than watching grass grow or watching paint dry.

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?

Awesome, thanks!

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.

Great video, thank you. With the laptop powering part you know how you said it's possible to damage fuses in laptop chargers - wouldn't it be more expensive to damage the bench top power supply AND is there a chance that bench top power supply CAN be damaged by plugging it in to faulty laptops?

@Adamant_IT

Жыл бұрын

Bench power supplies are built to be abused, they can handle bad connections, shorts, transients, etc. Regular chargers and power adaptors will have some protection, but they're not _supposed_ to lean on those protections at all.

@borisryavkin9669

Жыл бұрын

@@Adamant_IT legend, thanks

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?

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?

The Riden RD6006 is a good unit and a good dea, just order the case and the 60V switching PSU as well. SDG Electronics has a good review as does Daaaaave and others.

@ecospider5

3 жыл бұрын

What power supply did you use with it. EEV blog review was great. m.kzread.info/dash/bejne/YqWertqYeNaxhbQ.html

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

Always 0.1 under, good to be cautious 👍

10:21 - Thanks for the clarity. Maybe, sometime show a circuit that would utilize the balancing cable with your P/S.

@Adamant_IT

Жыл бұрын

Tbh at that point you may as well just use a balance charger - which is a better way to charge a lipo like this. The main point of the demonstration is showing how bench PSUs can achieve voltage and current control automatically for you.

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

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

That 3 cel lipo could have a single cel being way overcharged and another way undercharged. Charging without a balance charger is not recommended for LiPo's (unless the battery has a BMS).

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