This circuit controls an external light that turns on at dusk and off in the morning. The circuit is from a Radio Electronics from October 1987.
This circuit makes use of a transconductance operational amplifier. It generates signals with TTL...
This circuit uses na Unijunction Transistor (UJT) to produce a modulation tone for several...
This circuit was found in General Electric documentation from the 1980s. The circuit uses couplers...