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.