Static PET PSU questions

From: Ethan Dicks <>
Date: Wed, 30 Sep 2009 17:34:10 -0400
Message-ID: <>
Hi, All,

Back on that 2001-8 board... it's a P/N 320008, original board.  It
has a 5-pin power supply connector.  From the schematics, pin 3 is
GND, pin 2 is unreg 9VDC, and there's a pair of half-wave diodes from
pins 1 and 5 to pin 4.  I want to run this board in a more modern PET
chassis (so far I've been using external +5VDC through TP1 down by the
internal cassette port).  I've never been able to locate a
chassis-specific schematic of any PET to match up the rectifiers and
regulators on the board with the transformer and filter cap in the
chassis.  Can anyone point me to such a document on or
anywhere else?  I have the general idea of what needs to happen, but
I'd rather not fry my only #320008 board trying to put it someplace
"interesting" because I failed to understand some important detail.



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Received on 2009-09-30 22:00:03

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