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Signal pot dividing multiple signals

From Christopher Howard <christopher@librehacker.com>
Newsgroups sci.electronics.design
Subject Signal pot dividing multiple signals
Date 2026-03-16 08:39 -0800
Organization A noiseless patient Spider
Message-ID <87h5qf685t.fsf@librehacker.com> (permalink)

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Hi, forgive me if there is some overlap with my previous thread about
multipliers. But with my analog computer, a very common thing is to use
a potentiometer for dividing (attenuating) an input signal, as opposed
to having to setting up an expensive divider with a multiplier chip and
an open amplifier. However, this approach is a bit awkward/wasteful in
cases where you have multiple signals being divided by the same
coefficient — for example, several forces being divided by the mass of
the same object.

So, I was wondering if I could come up with a little (analog) module
that would attenuate multiple input signals based on the output from one
pot, using a few inexpensive BJTs or whatnot. Does anyone have thoughts
on what transistor configuration would be appropriate, or other helpful
ideas?

Regarding my last thread: I haven't had to puy together any hackish
multiplier circuits yet, because a generous Usenet user mailed me some
AD534 chips. I built one AD534 multiplier module that is basically just
the AD534 plus a voltage buffer, and I might build a few more of those
modules when I get around to it.

-- 
Christopher Howard

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Signal pot dividing multiple signals Christopher Howard <christopher@librehacker.com> - 2026-03-16 08:39 -0800
  Re: Signal pot dividing multiple signals "Edward Rawde" <invalid@invalid.invalid> - 2026-03-16 13:02 -0400

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