On 2/11/2012 4:15 PM, Nathan House wrote:
> I'm burning through batteries like nobody's business and think it's
> high time I purchased a power supply. I know I can make my own board
> with voltage regulators for common voltages like 3.3, 5, 12, etc, but
> I think I'd rather have something that's adjustable and can source a
> lot of current in case I ever need it.
>
> Thanks,
>
> Nate
>

I realize you are looking for something pre-built but I have found a=20
LM317, pot,  transformer, bridge and some caps was the way to go and if=20
you want high current you can add a pass transistor and do it all for=20
way cheaper than anything you will find online.  Completely adjustable ,=20
mine goes from 1.6 to 18, current can be whatever you need. You can also=20
do negative voltages easily which cost a lot more if you buy a pre-built=20
supply.

What I did is get a center tapped transformer and it is connected to=20
several regulators  a 3.3, 5, 12V and it also connects to a 317T and=20
transistor , so on the supply I have 3.3,5,12v,-5v,-12v, 1.6-18V=20
variable and I can use them all at the same time if I want. I connected=20
them to a barrier strip to make it easy.

Mark

--=20
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