Good article here on making your wall wart power supply adjustable

http://slotcars.carlsoncomputers.com/articles/slotcar_powerbase/variable_power_base.htm

Ya mean you can put it in a box ? :freak:


http://images.yuku.com/image/pjpeg/cd9156427bffc39583d3ff58c87c11eec5d2b2b.jpg

I slapped this one together about a year ago..gotta find the link for this schematic, adds some caps to clean it up.

I prefer my ripple in a brown paper bag. :drunk:

Chocolate or white :drunk:
Gene hows it work,i've never built one, :thumbsup:

The link for the one I did is dead :drunk:

Here's another one (http://my.integritynet.com.au/purdic/power3.htm), with a little theory behind it as well. :thumbsup:
Basically you take an LM series Voltage Regulator IC, use a variable resistor to adjust it's output, and optionally a few caps on either side to clean up the power in and out. The beauty of these IC's is that all the complicated stuff is designed in, they only require a handful of parts to make a real working power source.

This guy sells "power pack upgrades" for $35... http://www.davesmodelracing.com/parts1.htm

I'm still a wall wart guy and I'm thinking of trying these upgrade kits. They look like they're easy enough to work with. I realize that I could replace the warts with a low end power supply for the same price but there's something about using stuff I've already got that's appealing.