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Good General Purpose Bench Power Supply

Helios

Helios

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I was browsing ebay and saw a variety of power supplies under $200. Is every power supply created equal or is a name brand important if your looking for just general electronic testing purposes?


Heres a link to see some of the units im referring to. Some are even under $100 but they have pretty low ranges of voltage and current.

http://shop.ebay.com/i.html?LH_BIN=...id=p3286.c0.m282&_mPrRngCbx=1&_udlo=75&_udhi=
 
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Wolfman29

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So I recently got the Mastech adjustable current/voltage PSU. It was like $80 and it is good enough for my needs - 0-18V, 0-3A. More than enough for any laser for the near future.

Not sure what you will be using these for though.
 
Helios

Helios

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Wolfman29 said:
So I recently got the Mastech adjustable current/voltage PSU. It was like $80 and it is good enough for my needs - 0-18V, 0-3A. More than enough for any laser for the near future.

Not sure what you will be using these for though.
Click to expand...

Just for testing drivers and other electronics. I will have to check out that unit you bought.

LaZeRz said:
Make your own like me ;)

for about 30 bucks you can convert a computer PSU into a adjustable voltage lab Psu with 1-12volts and up to 5 amps using a lm338

How to Convert a Computer ATX Power Supply to a Lab Power Supply - wikiHow

Building an ATX to bench power supply converter - James Gibbard.co.uk

LM317 Voltage Regulator
Click to expand...

This looks like its up my alley! I love DIY
 
Wolfman29

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I used to have a home-made PSU unit... but it's nice to have two digital panels and knobs and stuff for reading/adjusting current AND voltage.
 
Cyparagon

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I've got one of those mastechs. I highly recommend it. Here's a good one.

A lm338 certainly works fine, but that's assuming you have most of the parts already and it's a pain to use multimeters for this sort of thing.
 
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Bluefan

Bluefan

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The current limit on that thing is software, nice as a simple voltage source but not a full lab power supply. I hope to find a hp 6632a or maybe a 6632b on ebay one day, too bad shipping is such a bummer, but for you that may be an option. HP makes really good stuff.
 
LaZeRz

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If you go for the DIY approach just PM me for help if you need it ;)

Also a LD1084 is the same as a lm338 but has a lower Voltage dropout :)
 
R

random person

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Built my own. 2 supplies 1.5-15V. 5A. Corse adjust + Fine adjust. LM338 based. Would have had screens for voltage and current but.... umm... but screens that required isolated inputs =( Curse virtual village and there utter lack of information. Got my cap bank for it out of the garbage dump at work =)
 
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