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Registered Member #1394
Joined: Sun Mar 16 2008, 06:18PM
Location:
Posts: 111
I just bought a Rigol DS1052e oscilloscope and need to get a power supply to go with it. Right now I have ghetto supplies (hacked pc supplies, switching wall units ect...) but these simply won't cut it for working with a wide range of parts.
So do you guys have any suggestions for a nice digital lab power supply suitable for use in digital electronics? My price range is between $200 and $300. I would like at least 2 channels on the power supply with between 50 to 100 watts of power output.
I've found many on various websites but they all seem to have very vague descriptions and few reviews.
Registered Member #2838
Joined: Fri Apr 30 2010, 07:55PM
Location: tehachapi, CA
Posts: 333
You could possibly make a modified version of this circuit replacing the LM317's with LM338's for higher current... It would be 0-30v 0-5A. I have seen people build a similar circuit with 4 LM338's acquiring a 20A setup. I have been meaning to give it a try for a while myself. LCD voltage and current displays are rather cheap on ebay. Just a thought... It would could save you some cash.
Registered Member #1394
Joined: Sun Mar 16 2008, 06:18PM
Location:
Posts: 111
I am not really looking to build one but I will keep my options open. Commercial units are what I am looking at but I simply cannot decide on one there are soooo many.
Registered Member #1394
Joined: Sun Mar 16 2008, 06:18PM
Location:
Posts: 111
I found this supply after looking around a bit. It looks fairly nice good price good brand and it has coarse/fine adjustment knobs which other cheaper units seem to lack.
Do you guys think this one would be good for my purposes?
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
Instek makes nice stuff, one thing which I highly recommend is getting a used one from Ebay or the likes. Most power supplies are built like tanks, and one that is a few years old will work just as well as one fresh out of the box.
Another thing to consider is getting a 'real' digital one (where you can set the voltage with a keyboard, or from a computer), they can be a huge time saver when doing analytical measurements, however many of them have horrendous user interfaces so be wary. Something like the HP 6332A is a common one, which can be had for ~$100 on ebay if you catch them at the right time. They have a nice feature where you can set it up as a current/voltage source or sink, which is very nice to have for things like testing batteries. The down side to that particular meter is the computer interface is only GPIB, and getting a suitable adapter can be pricey.
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Good lab power supply?
