Phased tri waves?

[Synthmanic at aol.com]

In a message dated 7/11/00 8:59:40 AM Central Daylight Time, blacet at metro.net 
writes:

> Anyone have a circuit handy for generating 3 90 degree out of phase
>  triangle waves from a input triangle?

There is a circuit in Thomas Henry's "Build a Better Synthesizer" book that 
describes this function. It's called the Quadrature Function Generator. 
Chapter 12, pg. 116.

Dave