Re: Simplest Possible Analog Divider
- From: Bret Cahill <BretCahill@xxxxxxx>
- Date: Mon, 5 Oct 2009 07:13:11 -0700 (PDT)
Some circuits use transistors or diodes to take logs, subtract and
then exponentiate to divide two signals.
The simplest mechanical divider that linear at least over a certain
range is a lever were the denominator is the distance the fulcrum is
moved away from where the numerator [force] is applied.
What's the most primitive / basic circuit that divides 2 impedances or
voltages?
Bret Cahill
uP with 2-channel ADC, divide firmware, dac.
That may be the real world solution but an idealized analogy might be
interesting, maybe a variable capacitor where the distance between
plates increases with the denominator signal.
There's probably a comprehensive list of analogues between every
kinematic mechanism and its corresponding electronic circuit. It
wouldn't be a bad idea to torture some of these as much as possible.
Bret Cahill
.
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