[GreenKeys] ASR 33 - another question about the reader

[Robert Laag]

I'M JUMPING IN FOR A MOMENT...  IT SEEMED THAT SOME TIME BACK WHEN I CONNECTED A M-33 TO MY CLASSIC COMPUTER STUFF THAT THE READER STEP MAGNET RAN ON 120 VAC...  I FOUND THAT AFTER TRYING SEVERAL RELAYS TO RUN THE STEP MAGNET FROM THE OUTPUT OF THE COMPUTER THAT THE ONE THAT WORKED BEST WAS A SQUARE BLOCK SOLID STATE RELAY...  RATED 120 VAC AND AT 2.5 AMPS...  THIS PROVIDED ISOLATION BETWEEN THE COMPUTER AUTOMATION ALPHA-16 COMPUTER AND THE M-33...  THE SAME UNIT COULD ALSO TURN ON AND OFF THE MOTOR USING ANOTHER SOLID STATE RELAY...  I THINK ISOLATION IS GOOD HERE...  I MIGHT NOT REMEMBER EXACTLY BUT IT SEEMS AS IF THIS WAS THE CASE...  BOB

--- On Sun, 4/17/11, Alf Fisher <alf_fisher at tiscali.co.uk> wrote:

From: Alf Fisher <alf_fisher at tiscali.co.uk>
Subject: [GreenKeys] ASR 33 - another question about the reader
To: "Don Robert House" <Packard42 at gmail.com>
Cc: greenkeys at mailman.qth.net
Date: Sunday, April 17, 2011, 1:17 AM

Don et al,
>From reading the question posed by Bill, it prompts me to ask about a 
problem I have with the reader on the museum ASR33.

It will run if I hold down the cover but for some reason it stops when I let 
it go.

I think it could be the Tape Out sensor but I also noticed the tape drive 
sprocket seems a bit low down and doesnt engage properly with the holes in 
the tape.
Is the protrusion of the whole assembly adjustable?

Any ideas?

Regards,
Alf
G3WSD

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