This circuit for controlling high power LEDs (up to 2A) is from a General Electric documentation from 1970. The circuit serves to modulate a transmitter in PWM. The circuit serves as a shield.
This proximity relay circuit was found in the July 1990 Radio Electronics magazine. The supply...
This sensitive circuit for triggering relays was found in an old English publication. It works with...
This circuit was obtained from a 90’s Linear Technology documentation. The circuit provides...