Ken Stone/1973 classic Serge/Serge comparator and Schmitt trigger

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

Construction

PCB pattern

Overlay and PCB pattern

Photo/overlay

PCB connections

• A = 3 + input
• B = 3 ramp input
• C = 3 output
• D = 2 + input
• E = 2 ramp input
• F = 2 output
• G = 1 + input
• H = 1 ramp input
• I = 1 output
• J = Schmitt input
• K = Schmitt output
• U = not used (0v)
• W = 0v
• Y = +6v

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 Comparator and Schmitt Trigger. by Ken Stone, 1999, with permission of the author - archived

External links

• Egres - The unofficial Serge web site
• Serge modular owners group
• CGS Synth discussion group, for discussion of locating parts, modifications and corrections etc.