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From: Stephen Shaw
Subject: Re: Nice power supply - cheap
Date: Fri, 8 Nov 2002 22:20:04 +0000 (UTC)
Organization: A poorly-installed InterNetNews site
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On Sat, 02 Nov 2002 20:32:54 -0500, Michael A. Terrell wrote:
> Sam Goldwasser wrote:
>> Winfield Hill writes:
>> > Yes, those came from the old days of TTL logic that needed horrendous
>> > amounts of current at 5V. I got 'em cheap for a 1000A 10V source we
>> Exactly. :)
>> > needed (use 10 of the 200A units in series - parallel), then gave in
>> > to others who decided to just buy two 875A HP programmable supplies.
>> Well I guess if the grant is running out and there's still money to be
>> spent..... ;-)
>> --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
>> Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
>> +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
>> | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html
> Sam, I used to do maintenance on a Vital Industries "Squeeze Zoom"
> video effects generator that had a three phase 208 VAC input, 5 VDC 1000
> Amp power supply, plus several other supplies. It powered a full six
> foot rack of boards to do digital video effects to NTSC video for a TV
> broadcast control room. It was full of 4K X 1 1000ns ram, and ran with
> a Z80B processor to do real time video effects. What a monster! Almost
> one full card cage of memory boards to get 768 K of memory to store two
> fields of video and chroma information. I'm glad I don't have to mess
> with it anymore.
How on earth did you find a faulty RAM in amongst that lot? From what I
remember early RAM wasn't exactly reliable.
> Of course, a couple hundred amps at 10 volts is enough to start your
> car engine on cold mornings.
Mail will bounce use : stephen (at sign) apple2 (dot) org (dot) za
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