Optical shield (CB20698E)

This circuit was found in American documentation from the 90s. The coupler is the type that uses a photo-Darlington.

Voltage Controlled Monostable (CB9423E)
The time constant for this circuit found in a 1973 publication is given by R and C. The shot is...
Film marker (CB8347E)
Used with old projector films, this circuit found in Signalite documentation from the 1980s,...
Drum (CB9094E)
This circuit generates damped sounds imitating a drum or other percussion instrument with...