LFC#206 - Bench PSUs and stuff you can do with them

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

Does anyone know how to save settings to Memory buttons (M1 to M6). It remembers while ON.
Mine forgets everything when I power off. Thanks!
Not sure if I got a bad one. 🙏

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.

Everyone I’ve seen uses them and inferred

No mention of whether the power supplies were linear or switch mode, no mention of short circuit protection , i think you should plan your videos better.😊
Just sayn

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

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 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.

Unfortunately, I have only just discovered your channel. 🥲Now I finally understand voltage injection and I can now use the thermal imaging camera for something useful.

I have one question. Maybe someone here can answere it:
For many years i use a PSU from basetech (BT-153). It has CC and CV. So far so good. It is quite similar to the eventek in the video. But i ran into a problem. It shuts the voltage off when i put the probes in the short curcuit. So no power is transfered into the circuit. I guess its anything like ocp or ovp. Cannot find anything about it in the manual.

To make the whole thing more understandable for me: It is not possible to inject voltage in a circuit with PSU like that?

Like it man good video thank you my name Adam too lol

I bought one of these about a year before your review and it was worked fine, I wonder how clean the output is though.

This is exactly the video I was looking for

Great video! Thanks! I learned a lot.

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

That’s how you set current on high dollar power supplies also…. It’s been a very common universal way to do that for ages. It isn’t inconvenient or anything 😂😂😂. The output is exactly the same either way…

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?

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?

Can I combine multiple bench psus by sharing the ground and have different output voltages?

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?

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.

Can v charge 12/24 V. Led Acid Battery through this PSU Unit of 5 AMPS ....

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

very helpful, thank you for sharing

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

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!"

Brilliant video. Thank you

Graham, Did you do a follow up about voltage injection?

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.

Fantastic Sir!

isn't there a risk of electric shock when connecting the laptop psu to the clips?

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

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

Awesome video, perfectly explained. Thanks you so much

Hi, what happened to your video titled "BRB#10 [SEE DESCRIPTION/PINNED COMMENT] - Short Detection with Voltage Injection" I was in the middle of watching the video and all of a sudden the video was interrupted and it said "this video is private" I can't view it anymore :(

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!

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.

you should never use a psu as a charger as there's no current feedback

Fantastic video / thank you

actually just used my dual output to power 12v portion of my trucks ecm. and inject 5v into the dead portion of the logic.

turns out all the logic was fine, i found a corroded trace leading from 12v to 5v regulator.

So are you selling that finicky psu bro. For starter like me it will be good than nothing.

Yah I agree. Wish I have one. But quite expensive psu.

Thanks for the explainer@

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 ?

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