[sdiy] in need of a good bench supply (+/- 0-18 volts and 5)

[Jerry Gray-Eskue]

You may want to take a look at this:

http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Su
pply

It can easily be repackaged to a nice format or rack panel.

The downside is that it is a switching power supply and tends to put out a
low level of high frequency EMF and ripple, but I have found it to be a
useful thing to have around even for many analog circuits.

The upside is it is very inexpensive and gives you a wide selection of
regulated voltages at useful levels and for the most part is great for
digital projects. You can always supplement it with an analog supply for
sensitive circuits.

The one I have setup can supply:

+5 - 20A
-12 - 0.5A
+12 - 14 A
+3.3 - 20A


- Jerry

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of Dan Snazelle
Sent: Tuesday, October 27, 2009 9:16 AM
To: sdiy
Subject: [sdiy] in need of a good bench supply (+/- 0-18 volts and 5)



I need a solid bench power supply that is NOT connected to my modular, and
has a nice case (unlike my home-made stuff) and doesnt suffer from
ripple,etc.

so I am going to be buying a bench supply. but wow, they are expensive.


my budget for a new or used bench supply is at most, 200 bucks.

I am a bit confused as to whether or not a +/- 0-18 or 20 volt output is
considered ONE output or Two.

obviously the 5v output is another out.

so am i looking for a 2 output or a three?

any brands or types to stay away from?


I was looking at this one:

http://www.web-tronics.com/dualout03x22.html

but from the datasheet (unless i read it wrong) it seems to have 2 +/-
outputs and a 5volt out, which is actually more than I need.

but it IS under 200.

thanks for any help

and if anyone has an extra bench supply they want to sell, well let me know

thanks!


_______________________________________________
Synth-diy mailing list
Synth-diy at dropmix.xs4all.nl
http://dropmix.xs4all.nl/mailman/listinfo/synth-diy