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.
The circuit presented was found in the National Semiconductor Linear Applications Handbook. The...
With the circuit shown in the figure we have a frequency modulation which is produced by a...
The configurations of the two previous circuits can be modified to operate with a simple power...