Found in a 1966’s General Electric documentation, this circuit uses a triple diode from the time. The output current is 5 mA. It serves as a voltage reference.
Originally suggested by Harris in the 1990s, this circuit uses an optical tachometer. The circuit is...
The two power steps below are intended for use with the SAA1027 stepper motor control but can be...
The purpose of this circuit is to emit infrared pulses. However, LEDs for visible light can also...