ring mod schematics?

[Paul Perry]

At 04:50 PM 21/05/98 -0500, Yoshiki Ohmura (Yoshi) wrote:
....an on-topic post....
>OK I succesfully build a ring mod based on the RC4200 chip (a while ago)
>but I would like to build some more based on other chips.  Does anybody
>have any schematics on this which uses chips that are still in production?

the AD633 ckt in Music Machines works..
there is a performance of a Stockhausen piece here  in Melbourne tomorow 
night with 2 grand pianos each feeding into one of my AD633 based ring
modulators.
Thanks to the synth-diy list for advice on getting the hum out of the regulated
power supplies.

what I have found out the hard way, is that small amounts of noise/hum on
the line going in to a ring modulator mixes with the other channel and can
make it 
sound that it is not nulling out the oscillator frequency..

paul perry melbourne australia