Ken Stone/1973 classic Serge/Serge ring modulator and gate

The following info on the 1973 variant of the Serge ring modulator and gate module is presented for educational/historic purposes only and are not to scale.

How it works

Ring modulator schematic

Gate schematic

Construction

PCB pattern

Ring modulator PCB connections

• A
• B = VC X
• C = Y
• D = VC Y
• E = X
• F = Out

VCA PCB connections

• A = CV lin in
• B = CV log in
• C
• D = DC sig in
• E = AC sig in
• F = Out
• U = not used (0v)
• W = 0v
• X = +12v
• Y = +6v
• Z = -12v

Overlay and PCB pattern

Photo/overlay

CC-BY-NC

Readers are permitted to construct these circuits for their own personal use only. Serge Tcherepnin retains all rights to his work.

See also

• Serge Modular Music System

References

• Some info on the 1973 variant of the ring modulator / gate (VCA) module. by Ken Stone, 1999, with permission of the author - archived

External links

• Comments On The New 13600 And 3280 OTA Devices by Serge Tcherepnin, Electronotes Vol. 12, No. 113, May 1980, pp. 8-11, Sergé on OTAs and their relationship to his ring modulators.
• Egres - The unofficial Serge web site
• Serge modular owners group, Yahoo group
• CGS Synth discussion group, for discussion of locating parts, modifications and corrections etc.