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From: thad@cup.portal.com (Thad P Floryan)
Newsgroups: unix-pc.general,comp.sys.att
Subject: Re: 3B1 power supply schematics
Message-ID: <21442@cup.portal.com>
Date: 19 Aug 89 23:43:41 GMT
References: <1521@tellab5.tellabs.CHI.IL.US>
Organization: The Portal System (TM)
Lines: 43

Darryl Baker is asking for schematics of the UNIXPC power supply ...

The schematics are NOT in the UNIXPC Reference Manual.    :-(

Near as I can tell, the power supply was intended to be a throw-away.
Perhaps the San Leandro repair facility can provide more help.

The "stock" power supplies are manufactured by Power Systems, Inc.

From two of my previous postings:

For reference, the power supplies in the 3B1 and the 7300 *ARE* different.
Specifically:

The 3B1 power supply is mfd by Power Systems, Inc. and is their model PS 1610-1
(Convergent part number D-65-00056-1, Rev. B).  Its specs:

        90-130 VAC, 245 Watts, 58-63 Hz
        +5 VDC at 20 Amps
        +12 VDC at 5 Amps
        -12 VDC at 300 mA

The 7300 power is also mfd by Power Systems, Inc and is model PS 1569
(Convergent part number D-65-00042-00, Rev. E).  Its specs:

        90-130 VAC, 58-63 Hz
        +5 VDC at 20 Amps
        +12 VDC at 3.5 Amps
        -12 VDC at 100 mA

A: Although I'm not certain this is the same subcontractor who mfd'd the
   UNIXPC's power supplies, I have found this entry in one of my various
   buyer's guides:

        Power Systems, Inc.
        12 Tobey Road
        Bloomfield, CT  06002

        ph:  203/243-0357
        TWX: 710/425-8778


Thad Floryan [ thad@cup.portal.com (OR) ..!sun!portal!cup.portal.com!thad ]