Arrival: Cheap Chinese bench power supply

[randyfromm]

Don't get excited. There is nothing special here.



[DjRaveKing]

Apparently , i have me eyes fixed on the 60V 5A RXN605D

Thanks for letting me know the site ! It's a HEAVEN .

( I actually had me mindfucked by the countless soldering stations there ... Just picked a standard 936 in the end ) Because i buy one more just for the sake of having two stations .

[droktane]

Highly recommend you re-purpose an old or new computer PSU, since they require much cleaner power, even the cheapest models will far surpass this. You can put banana jacks on it just like this, if you wish. This is not a very comprehensive review since you did not review the actual power that it puts out, either with a meter or scope. I would not trust it, you get what you pay for mate. :D See here for ATX to bench instructions: tinyurl(dot)com/ajc2d

[DjRaveKing]

@droktane Nope . The low end ones are missing inductors , capacitors and whatsoever . And PC Supplies aren't purer then these ones , heck , you could swap the 10mF with a 20mF !

[droktane]

@DjRaveKing That's true, but I guess I didn't mean the very-very cheapest computer power supply you could find.. mean some are obvious junk with 20ga wires coming out of them (thick insulation makes them look normal), cases that look like they are made of thin tin. Basically you get what you pay for. But my point was often you can find and reuse an older computer or server PSU that is of a much better quality than this, and it costs nothing. Just add some banana jacks. We need actual tests.

[DjRaveKing]

@droktane Well ... server PSU's are mostly no different from computer PSU's . Just tell me if they can be constant current adjustable or FULLY adjustable voltage .

[Reiuyi]

@DjRaveKing i got a server psu a while back and the quality is amazing, it's not even made in china (though the components probably are).. you just can't compare them to regular psus you buy at your local store for $50, they're amazing for 12v/5v hobby projects

[DjRaveKing]

@Reiuyi Yup . Quality wise they are definitely made better , because it's for a server .

Anyways , nice snatch , i found a small tape drive SMPS too if it matters .

[Reiuyi]

@DjRaveKing mine is a "hitachi PPD5002" for anyone who cares. you can find plenty of them on ebay for like 10 dollars second-hand. the power is a lot cleaner than most high-amp supplies, and it doesn't catch fire because there's no plastic in/on it

[danz409]

thanks! saved me heaps. cheapest units i could find is making my own out of computer power supply. but 1. there not solid state. 2. not variable. 3 no current limiter. great find thanks! ill give a post when it comes in.

[uxwbill]

I have the 5 amp/30 volt version of that supply. It's much more heavily built, with a large heatsink for the pass transistor inside and a cooling fan. It lacks the "click" control and replaces it with a fine-grained current adjustment control. I've been quite happy with it and have found it to be reliable and well protected against "circuit faults". Internal construction quality is actually pretty good, though they used lead free solder.

[Kankki1]

That thing is gonna burn up! The output transistor is just heatsinked to the probably steel case. Which is far insufficient

[markhodgson600]

go to ebay farnell psu units

[danz409]

@markhodgson600 Your search returned 0 items.

[markhodgson600]

thay are a load of crap

[Billthesheepdog]

I hope that Chinese junk doesn't catch fire!

[habitbraker21]

Thanks for the review!

But where is the teardown?

[lapulapu12345]

made in china

[squiggyreck]

Thanks for the review....

[czesiocygan]

I know goodluckbuy, currently waiting for mail to arrive... but price for this PSU is not good :-(

allegro.pl/zasilacz-serwisowy-­powerlab-1502d-0-15v-0-2a-led-­i1614407775.html

In polish site I can have exactly same PSU for 40USD... and I do have a real warranty for it (send this to China if it fails...) and it will not be in this condition as your when it arrives (kicked case). 40USD vs 63 USD +free metal case defects :))

The problem for 63USD price is hidden shipping...

[bingobongo17]

Hey Bruce, Same PS for $30, see t o t o b a y . c o m search for PXN-1503D

[RCModelReviews]

@bingobongo17 Yeah... but that doesn't include shipping. Add the shipping cost and comes to USD$75 -- a bit more expensive than GoodLuckBuy's price!

[jof1953]

Looked a the Goodluckbuy website and its interesting: the range of goods is mind-boggling but you'll need more than good luck to find the cheap power-supply which was subject of the video. I had NO LUCK even after searching for the product code (shown at beginning of video).

By the way, Bruce I am big fan of you and your work but where do you find the time? You must be a workaholic!

[RCModelReviews]

@jof1953 Search for "BEST-1502DD" it's SKU 62729 $63.17 incl shipping.

[sbtflyhi]

Yes do a review on your foam cutter. I love to see what others approach to same problems. Like a foam cutter

[catamaranman333]

You're really close to touching on a subject I have great interest in. I have been doing alot of motor bench testing and we all know the voltage from battery packs fluctuates quite a bit. To get fair results I am constantly topping off LiPo's. Could I run a motor with a DC power supply? Obviously this 2A rig isn't going to fit the bill but what If I had one that would make 90A or so? I'm thinking of using a Marine battery charger...

[RCModelReviews]

If anyone's interested, I can do a "review" of my own hotwire power supply which I built for cutting foam wings. It's very simple but can operate a hotwire up to 1.5m in length and has variable current for setting the heat.

[raincloudnz1]

@RCModelReviews It would be awesome to get a how to on making a foam cutting hotwire/powersupply system. Keep up the reviews - awesome.

[raincloudnz1]

@RCModelReviews It would be awesome to get a how to on making a foam cutting hotwire/powersupply system. Keep up the reviews - awesome.

[Xnaron]

@RCModelReviews is it PWM?

[RCModelReviews]

@Xnaron If you're talking about the Chinese bench supply -- no, it's linear. It has a 2N3055 pass transistor on the back so won't be stressed by 2A.

[startazz]

@RCModelReviews Yeah that sounds good to me Bruce and a how to might be handy mate ;-) thumbs up.

[innervoid375m]

@RCModelReviews I would love to see the details of your foam cutter, I would like to build one as well.

[staplegunnr]

Thanks for the great reviews. Like you I have had interecting luck with the condition of packages shipped from China.

[roberted51]

Some of the older battery chargers,with transformers,make good power supplies for hot-wire foam cutting.Once you get the case off you'll find wires not in use that have different voltges.Also,I used a adjustable ceiling fan switch to fine-tune the heat of the wire.



[C0ldFart]

hahaha chinese soccer team, made my day :-)

[ap0lmc]

I converted a PSU from an old PC into a powerstation for my iCharger. and it works now to it's full capability of 10 amps. Unit is rated for 15 amps for the 12 volt circuit.

[RCModelReviews]

@ap0lmc I've just about finished editing a video showing people how to do that as a DIY project. Should be online in a couple of days.

[ap0lmc]

@RCModelReviews I will look forward to it thanks.

[48horijoe]

@RCModelReviews its good flying next two days..make that next week

[godofarchitecture]

I was actually looking at that one recently. I was going to use it for hot-wire foam cutting. Thanks for the review.

[RCModelReviews]

@godofarchitecture For good foam-cutting you might find that you need more than 2 amps of current.

[godofarchitecture]

@RCModelReviews

Thanks for the warning. You're right, I should probably be looking at a 5 amp system instead. Cheers

[ArjanHarre]

@RCModelReviews I was just about to say that too ... godofarchitecture, wait for Bruce's DIY power supply project. That will give you ample power to cut foam.

[BMSWEB]

Nice find! I might get one of these!