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Re: pre-STS Serge PSU voltages and panel current draw.

2008-01-04 by Steve Ridley

> btw, i have a triple comparator module but its
> graphics suggest that it must be an early 80's model
> (you know, rectangle thin line around the module with
> small "serge" letters on bottom).

That sounds like it would be from 77-79. All the triple
comparators I've seen used the +6v supply.

Take a look at the component side of the circuit board.
There will be a couple of pairs of wires that carry power
from board to board. One pair of wires will be black
(0v). What colour is the other pair of wires?


> i do not think that it needs 6volts... maybe they
> changed the triple comparator module later too (after
> the end of 70's)?


I've only ever seen ones from 1973/75. It's possible
that Serge changed them later, but I've never seen one.


If you need +6v, Serge just did it by attaching a 6v
regulator to power supply. Any competent tech should
be able to do that.



Steve

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