On Thu, 1 May 2003, steve wrote:
> there is tons of stuff on the net, try
>
> http://dcoward.best.vwh.net/analog/
>
> for good introductions, all analog computer are
> basically the same, the biggest difference is how many
> op amps they have, and that limits what you can do.
> Each amp can be configured to either add, substract,
> multiply, integrate etc by hooking up the appropriate
> feedbacks (all the wires you see hanging off them, the
> gains are set by variable resistors on the unit, the
> knobs you see on the EC-1). They are used to simulate
> dynamic systems, like an aircraft control system for
> instance (a few hundred amps), or a weight attached to
> a spring (a few amps)
Actually all analog computers are _not_ the same.
For example: Resistive Sheet computers are very different....
PCW
Received on Thu May 01 2003 - 12:29:01 BST