(ET) Controllers

["Robert" <euclid delhitel net>]

Walt,
I did my first college physics course with a Pickett slide rule in the mid 
60, when I went back to school later everything was programmable 
calculators. I never did get rid of that slide rule! While I don't think 
motor theory has changed much brushless DC is stealing the show now.
Rob

-----Original Message----- 
From: elec-trak-request cosmos phy tufts edu
Sent: Monday, June 16, 2014 12:00 PM
To: elec-trak cosmos phy tufts edu
Subject: Elec-trak Digest, Vol 12, Issue 81

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Today's Topics:

  1. Re:  Controllers (Konstanty, Walter (GE Energy Management))


----------------------------------------------------------------------

Message: 1
Date: Mon, 16 Jun 2014 13:53:03 +0000
From: "Konstanty, Walter (GE Energy Management)"
<Walter Konstanty ge com>
To: Chad Bush <bushman165s aol com>, "elec-trak cosmos phy tufts edu"
<elec-trak cosmos phy tufts edu>
Subject: Re: (ET) Controllers
Message-ID:
<001DBB9ACA41D24DBF8D6AB7D09197DD229099D5 ALPURAPA06 e2k ad ge com>
Content-Type: text/plain; charset="us-ascii"

This forum is great.... Old tales...... well, I started at GE designing DC 
motors with a slide rule!  The year - 1978.  And, that was almost 10 years 
after the Elec-Traks were designed.
How technology has improved.  But motors still work the same.
...Walt

From: Chad Bush [mailto:bushman165s aol com]
Sent: Sunday, June 15, 2014 12:40 AM
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Controllers

You guys and your hobbies. I was lucky enough as an engineering co-op to 
work with a microVAX pdp11 running the VMS OS, networked with a microVAX  II 
that ran our main data acquisition software, communicating over GPIB with 
HP3852 A/D converters and PSI8400 devices. We upgraded to 1GB hard drives in 
2005! Original hard drives were 640MB and had to be locked down when we 
transported the 4 that we owned into a single location for turn-in. We had 
reel-to-reel backups and TD-50 cassettes as well. It was really fun to make 
changes in software, (written in Fortran 77), and really see the 
functionality go to work. I support wind tunnels in the research environment 
and I really miss the days of running tests on a mere few megabytes. Now I 
can develop software that acquires data at 200kHz over 48 channels without a 
hiccup across a CAT6 network using NI hardware. I still own power supply 
Heath kits and meters from the 1970s that I use for Elec-trak component 
troubleshooting, along with
 iPod and iPhone repair, lol.

Chad


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