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Aaron Teeling
May 4th, 2008, 05:51 AM
Does anyone know of anyone who has built or is building a analog computer?

NobodyIsHere
May 4th, 2008, 06:00 AM
Does anyone know of anyone who has built or is building a analog computer?

Hi,

Yes. We built those in college. They are basically a collection of op-amps and passive devices used for solving differential equations. The military used to use them for all sorts of applications like ballistic solutions, mixing equations, etc

They work well but are not terribly exciting, IMO. I am sure you could build some based if you got a book on analog computing from the library and ordered some precision op-amps.

Best of luck!

Andrew Lynch

PS, ordinary passive components generally aren't going to work since the precise values are necessary for accurate solutions. Generally, you'll need the high precision 1% tolerance or better components.

Dwight Elvey
May 4th, 2008, 10:53 AM
Does anyone know of anyone who has built or is building a analog computer?

Hi
There are a number of different types of analog computers.
As was mentioned, many think of the op-amp type as the only
type. There were many of what I'd call the slide ruler type.
These were quite common from places like radio shack.
These were just three pots, a battery and a meter.
I have a couple of op-amp type analog computers but
I've not had time to play with them much. One is the
EC-1 by HeathKit.
Many problems in physics can be done with analog computers.
The US had some of the best fire control computers that
used mechanical analog computers, during WW2.
Early pong games were done with analog computing.
Dwight