"three phase" sig gen?

[Paul Perry]

At 11:14 AM 29/01/99 +1000, Merlin Zener  wrote:
 help me out with a
>simple cct for a signal generator. The outputs I want to be
>like this:
>
>     __
>1.__|  |______|
>        __
>2._____|  |____
>           __
>3.________|  |_
>
>It has to run off a 9V battery, other than that there's no
>particular requrements I can think of. It's for a new type of
>universal cable tester I'm thinking of.
>
Do you mean square or sine?

If you mean square, then use a ring counter.

If you mean sine with 120 deg between phases, use a 3 stage phase shift
oscillator.
OK, there is less distortion on some outputs than others, but it is ok really.

If you mean adjacent but non-overlapping pulses, perhaps a shift register.

All these are guesses, I havn't built them..

paul perry Frostwave P/l Melbourne Australia