From: David R Brooks
Subject: Re: Digital divide by ten, 1949 style
Date: Wed, 18 Sep 2002 06:25:16 +0800
References: <firstname.lastname@example.org> <email@example.com>
X-Newsreader: Forte Agent 1.92/32.572
firstname.lastname@example.org (William J. Beaty) wrote:
:email@example.com (Tim Shoppa) wrote in message news:...
:> As I understand it, a phantastatron works as a fixed-frequency divider, but
:> does not work as a counter. Am I confusing it with a sanatron? In my
:> head it's something like a non-retriggerable one-shot being used as
:> a frequency divider.
:Now let's do the same with active elements composed of carbon
:microphones driven by voicecoils. :)
:Hah! We need no steenking "clackers" or greasy difference engines.
:We can start the computer revolution in 1850 using little bitty
:carbon mics as "transfer resistor" elements. Let there be
:clock oscillators which cause human-audible "EMI."
A solenoid driving a carbon resistor was used, to control DC
generators. Termed a "carbon-pile" regulator, it was a stack of carbon
blocks, pressed together by a spring (hence lowering the overall
resistance). This was put in series with the generator field.
Opposing the spring, was a solenoid energised from the generator
output. Crude voltage regulator.
DC car generator regulators were different: more like a switching
regulator, they used a vibrating contact in the field, which buzzed
more or less on to regulate the average output. Very noisy.