[sdiy] Power Supply Completed

[Michael Ruberto]

Today I got the sucker working. Beware, sometimes brand new MOVs EXPLODE in 
your face! I guess it must have been defective...
Anyway the PSU is a dual tracking 15V with an 18.5V output for use with 
modules that have onboard regulators and the SEM VCO I have in the design 
stage. I have not load tested it yet but my tests of the tracking circuit 
have been better than expected. I calculated a 0.1% error between the 
outputs.
here's the schematic:

http://frankentron.freezope.org/source/diy_blue/images/PSU_REV1.gif  (29,281 
bytes)

Here are some pics:

http://frankentron.freezope.org/source/diy_blue/images/PSUPCB.jpg   (35,043 
bytes)

http://frankentron.freezope.org/source/diy_blue/images/PSU1.jpg   (33,269 
bytes)

http://frankentron.freezope.org/source/diy_blue/images/PSU2.jpg  (57,381 
bytes)

As you can see from the last image it's not a looker. The chassis and 
trannies are from an old ionic air purifier I got from the garbage. I had to 
steel wool the heck out of the box to make it shiny again. I mounted binding 
posts for the outputs so I can use it with a breadboard setup considering 
none of the rest of the synth has been built yet. I got juice though, and 
its a start!

M. A. Ruberto