This circuit was originally suggested in a 1968 publication to generate a white mark (frame) on a film at regular intervals to serve as a time reference.
We found this circuit in an old documentation. Its purpose is to turn on warning lights when the...
This percussion circuit was found in an Electronics World of 1968. The transistor may be general...
We found this transmitter circuit with a single chip in the Motorola Linear Databook of 1990. The...