[Milsurplus] Battery eliminator

[CL in NC]

I answered an off list question and then I thought maybe this might be news to some.  The AWA sells some circuit boards with schematics and parts list, for several things, one being a very nice battery eliminator.  I built one and it provides all filament, bias and B+ voltages you would ever need for any radio that took A, B, and C batteries.  It supplies, 22, 45 ,67, 90, 135,and 180 B+volts, -4.5, -9, -16.5, and -22.5 Bias volts or can be positive as all the commons are separate, and DC filaments volts which is adjustable from 0 to more than 6 VDC.   I was able to find all the parts by their PN per the parts list which also gives you the sources.  I opted to make mine for use with any radio, and built it in a box with banana 5 way binding posts on all the outputs, and brought the normally circuit board mounted filament pot out to a 10 turn pot on the front panel.   It can be built to supply power singly to a favorite battery radio if there is enough room to mount the approx. 6 1/2 inch square circuit board by about 3 inches tall max,  due to the vertical heat sinks. 

Charlie in NC