DEC power control? How do it know?

From: R. D. Davis <>
Date: Tue Jun 6 12:14:35 2000

On Mon, 5 Jun 2000, Tony Duell wrote:
> [1] Although some PDP11/10s seem to use the older system I'll describe below.

My PDP-11/03 systems were apparently sold as some sort of laboratory
equipment package by a company called Applied Color Systems (ACS);
they were full of some sort of metallic-looking dust (I think they
came from a cosmetics company before being donated to the the
university where I got them, which didn't want the equipment), and
came with a non-DEC power controller: an Applied Color Systems C1035
power controller which is of a rather simple design, although it
contains parts from well-known manufacturers: AMF/Potter & Brumfield
relay, Gould circuit breaker, Tignal Transformer Co. 12VAC transformer
and sockets made to federal spec. WC-596, whatever that is; heavy
solid steel case as well. I wonder if they're "badge engineered."

There are six switched outlets, two unswitched outlets, a 20A circuit
breaker, two 120VAC plastic three-pin (two of which are used)
connectors for fans and one plastic three-pin connector (two of which
are used) that when shorted completes the circuit for the relay coil
and switches the 6 outlets on.

R. D. Davis             
Received on Tue Jun 06 2000 - 12:14:35 BST

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