AW: AW: Full wave rectifier as Saw-to-Tri converter

[Haible Juergen]

	>A big advantage with the transistor approach is that the glitch
when the sawtooth resets can be cancelled,

Isn't that true for any tri-to-saw converter ?

	>I have managed to get around this limitation by using the classic
one transistor saw to triangle converter >and adding a RC network that
bypasses the transistor. By choosing suitable capacitor and resistor values
>the glitch can be cancelled. See attached schematic.

I'm using an one-ota slew limiter in my new VCO. Slew limiting may have a
tiny advantage over RC filtering
because it doesn't affect the triangle slopes even if they are "almost" as
fast as the limit is set. 

(This is for the EMS-style variable ramp waveform that is derived from the
saw. I still have a perfect triangele
from the VCO core of course, as I mentioned earlier. Hope I can make the
final tests on the weekend.
Have tested it with frequency counter and voltmeter so far, but I still have
to hook it up to a synth
environment.)

JH.

(Haven't seen Jörgen's circuit yet - email is aparently doing strange things
today.)