28 Nov
2010
28 Nov
'10
6:07 a.m.
Now that I have access to the main unit the plot thickens. All of the
outputs of the potted brick go to full-wave bridge rectifiers in the main
unit such that you get a plus and minus voltage reference to the CT ( center
tap ). That big potted POS is nothing more than a big friggin transformer !
The main output leads ( 1 2 and 3 ) have 28 VAC coming out of them. I put a
Variac on the " transformer " and turned it up very slowly. At not much
voltage it gets very HOT ( I suspect shorted windings or a whole shorted
primary on the input side. The 28 VAC output figure came from estimating
proportionally what the output voltage would be with a full 115 VAC on the
input primary. I own this puppy now !!
Best regards, Steven