Octature osc?

[Ingo Debus]

jorgen.bergfors at idg.se wrote:
> 
> I would like a three phase LFO. Any ideas how to make one? I already have one
> that use all pass filters to get 120 degrees  phase shift, but it only works
> right for a very limited frequency range.

There was a three phase oscillator in Elrad 8/97. It was like a
quadrature oscillator with two allpass filters, but the phase shift of
these was 60° and 120° instead of 90°. Frequency range is
250Hz...2.83kHz.

Ingo