AW(Magnus): [sdiy] analogue phase modulation

[JH.]

I think there's a similar circuit in Electronotes, used as a waveform 
animator - I'll check the resistor values there.

JH.

----- Original Message ----- 
From: "Magnus Danielson" <cfmd at bredband.net>
To: <jhaible at debitel.net>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, January 11, 2007 8:29 PM
Subject: Re: AW(Magnus): [sdiy] analogue phase modulation


From: "JH." <jhaible at debitel.net>
Subject: Re: AW(Magnus): [sdiy] analogue phase modulation
Date: Thu, 11 Jan 2007 20:18:45 +0100
Message-ID: <001a01c735b5$6aad1830$0200a8c0 at jhsilent>

> > OK, so if +/- pi radians is all it takes, then inserting my
> > sawtooth phase
> > modulator
> >
> > http://rubidium.dyndns.org/~magnus/synths/schematics/sawphaseshift.pdf
> >
> > should be enought. Just do a normal sawtooth core, and sine
> > waveshaper and
> > away you go.
>
> Magnus, are you sure this circuit works?

No, this is the untested stuff from my scratchbook, but it has been tested 
by
a fellow Synth-DIY friend and it was said to work.

> I would expect the strong square wave from U1A's output via R2 to crush
> anything coming from R1, creating a pulse wave at U2B's output ...

I've always suspected I swapped those resistor values around. That would be 
a
minor issue as the general idea would not change.

Cheers,
Magnus