[Milsurplus] Selenium rectifier pinout

[Jim Horn]

Jim:
If I remember correctly:
The center lug is the DC output positive.
The two outside lugs are the DC output negative.
The 1/4 and 3/4 lugs are the AC input.


If yours still works in some manner, yo might want to check the DC polarity with a VOM before disconnecting the existing selenium.
73
KA7GKP


Message: 2
Date: Sun, 18 Mar 2012 22:13:33 -0700
From: "Laura and Jim" <mcenfalz at humboldt1.com>
Subject: [Milsurplus] Selenium rectifier pin-out help needed

I have a 4 plate (3" diam.) one in a mains PSU for my TCS-8 I need to replace 
because it runs warm and is becoming smelly..........

Picture this if you can:

One connector on each end of the stack, one connector between each plate (five 
total). Outer ones are tied together. Four wires in/out.

If I use a modern replacement bridge, which wires (AC, + and -) go where? 

Can't seem to find a diagram on-line showing this. I have seen other Se 
rectifiers w/many more plates (for higher voltage rating?) These are even more 
complex.......

I understand there's a voltage drop per junction I will need to compensate for 
in order to keep the output voltage at it's original value.

Thanks for the help.

73 DE JIM K6FWT