These circuits were obtained in an Electronics Now from the 90s. The integrated circuits are from that time and the power can be between 1.5 and 2 V.
Found in 1980s Electronic Engineering, this circuit uses common phototransistors as sensors. The...
November 2016 - Torex's new XCL219 and 220 DC-DC converters are available from Mouser Electronics...
This circuit can be used to control loads up to 500 mA from the outputs of microcontrollers such...