[GreenKeys] Selector magnet driver board

[dave sigafoose]

Mike,

Ok, I just removed the 'selector magner driver board',
and underneath was the transformer, capacitor, and the
current resistor.  Wired it to the keyboard and
printer and everything came to life.  Thanks for you
suggestion.

By the way, the transformer secondary was 80 volt
center tapped, which gives me a 40 volt current loop. 
Seems to work OK.

Regards,


Dave Sigafoose - N2CZB


--- mikep <mikep at mcsi.net> wrote:

> Hi Dave,
> 
> After digging through all my Teletype manual, it
> appears you have a selector magnet driver board
> with an open line detector.  I would say if you're
> handy you could pull out the board and just keep
> the transformer, capacitor and the current (60 mil
> that is, ) resistor. If it's what I think it is,
> there should be another board underneath the first
> board.  If I remember correctly, if the loop went
> open for a certain amount of time, the board would
> time out and close up the local loop so the
> machine wouldn't bang away all night long.
> 
> 73's
> 
> Mike WB6RHW
> 
> 



		
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