Re: Analogue computing

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#621238

From: Ahem A Rivets Shot
Date: Fri, 16 Mar 2018 19:56

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On Thu, 15 Mar 2018 14:33:18 -0500
Jon Elson <jme...@wustl.edu> wrote:

> However, once the IC op-amp came out, analog computing for production 
> control systems got a huge boost.

	Very much so, I've seen (and made) some surprisingly simple control
systems that way, also real time data analysers - and I was only dabbling.

>  Today (and, really, from the late
> 1980's or so) digital computers with a couple ADC and DAC chips can do a
> very cheap, reliable, and reproducible job with a minimum of pots and 
> adjustments.

	Reproducible is of course the big win in production - if you can
get the adjustments to zero then the production rate shoots up and cost
shoots down.

>  But, back in the 70's and into the 80's you could do a lot 
> with a couple op amps.  I retrofitted a cruise control on a car I had, it 
> was an all analog solution, and worked very well.  About a 2 x 3" PC
> board with 5 8-pin DIPs and some passives did the whole thing.

	Neat.

-- 
Steve O'Hara-Smith                          |   Directable Mirror Arrays
C:\>WIN                                     | A better way to focus the sun
The computer obeys and wins.                |    licences available see
You lose and Bill collects.                 |    http://www.sohara.org/

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From: Ahem A Rivet's Shot <ste...@eircom.net>
Newsgroups: alt.folklore.computers
Subject: Re: Analogue computing
Date: Fri, 16 Mar 2018 19:56:33 +0000
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