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 circuit was found in a 1966 General Electric book. The triac and the day are from that time...
We have articles on the site with the name “lamp test” for this configuration found in a Popular...
We found this oscillator in a 1978 amateur radio documentation. The circuit supports other...