EEVblog #1030 - $20 DIY Bench Power Supply!

Dave takes a quick look at the spectacularly cheap $20 DPS series CC/CV modules from RD Tech.
How to make a 30V 3A bench power supply with 1mA resolution constant current limiting and multi function display using a junk bin enclosure and a junked plugpack or old computer power supply.
The DPS3003 30V 3A module in particular.

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[stephenwgreen]

The fact that Dave didn't manage to start a campfire with it, overall positive review & the manufacturer being willing to respond to questions (& shows a great deal of pride in their work) on a YouTube video about a 20-30$ product... I'll be purchasing one.
I've been looking at these for a couple of weeks & this seals the deal😉
Thanks for the video

[GadgetUK]

These look great for the money! Please do a follow up Dave!

[RonaldWijermars-rohmega]

Excited to see you trying these modules, but I think you should read the manual first. Setting the voltage is actually way simpler then going into the settings menu. Just pressing V or A and then pushing and turning the knob will enable you to quickly change the voltage. I have the DPS5015 and I am still very happy especially for the money, would like to see if it could actually go up to the maximum advertised power, I have only tested mine up to 250w.

[KarlBaron]

"I just wanted to mention these types of devices, in this video I'm not going to be characterizing them or anything"

*looks at timeline, 12 minutes left*

He's going to characterize them isn't he...

[rocketmanprojects]

If the current is reading a bit low, you can take some wire cutters and put a little crimp in the current shunt.
That will increase the resistance and make the current read higher.

[bdot]

I like it when you play with things that are affordable for the typical hobbyist

[adeldex]

This channel has the best yt comments that I've seen by far!! Every body is on topic and no one is trying to be funny. You guys are awesome, have a wounderfull day!

[VolthausLabElectronics]

"If you haven't got a whole bunch of spare plug packs...you're not really trying." Best Laugh o' the Day Award winner. Thanks Sir Dave!

[OriginalUsername]

Dave giving good reviews of chinese stuff, what a time to be alive.

[AdamWelchUK]

I’ve been using the RuiDeng BPH3205 on my bench (and on my channel) for a few months and it works extremely well as a buck boost on my 12 volt lead acid batteries. It’s worth noting you can adjust the voltage and current output without going into the full setup menu by pressing the V or A button and then using the rotary encoder. Great value as you say.

[gd.ritter]

I've had the DPS5005 for about 6 years working great. The first few years I powered it with an old dell laptop charger at 19.5v. About 2 years ago I got a 48v brick for it and have loved it the whole time. The case they sell to go with them includes an extra cooling fan with it's own daughter board mini power supply off the input.

[PlaywithJunk]

Dave, did you notice that current and voltage are selectable directly from the main screen without going into the menu? As you explain it, it seems very complicated but it isn't.
Just press the "V" button and change the voltage. And the "A" button for the Amps...

[whuzzzup]

> How to build this device
Open mail, plug in.

Well...

[uzaiyaro]

I have been dying for someone to do a review on one of these, been looking at them for a while. I've just pulled the trigger on a 50v 5A one before the price skyrockets.

[WaltonPete]

Nice to see you do a video on a bit of kit that's affordable to pretty much everyone. They look like a great option for hobbyists and tinkerers on a budget.

[RabidBadger_]

The DPS-series units are the way to go with these.

I've been very satisfied with the bench PSU I built with a DPS3012 and a 36V 10A power supply I had lying around.

Also, you can adjust the output from the main screen by pressing the V/A buttons and adjusting with the knob.

[jnowak]

Ran one of the dps5015's on a resistive load as a room heater in my office most of last winter, the little module held up like a champ! Ran it at full current load for hours at a bit over 700w everyday without a bit of trouble, seems like it would even run slightly more current than rated. Good little bit of kit!

[squalazzo]

Dave, you missed the COMMUNICATION versions of some of these modules, which include serial or bluetooth connection and pc software!

[PlasmaHH]

One thing that is much better than even some higher priced bench power supplies: It shows set and actual value at once.

[ovalwingnut]

👍😁 This was quite instrumental and I'm glad you had the power to regulate this current information in a way that wasn't conFUSEing.