This circuit detects changes in the active cycle of the input signal. The circuit was obtained in a 1966 EEE. Transistors are general purpose types of the time.
The integrated circuit used in this project is not common today, but the circuit can be adapted to use a...
This low current source without a transformer is intended for applications where insulation is not...
This dimmer for high-powered incandescent lamps was found in a 1967 General Electric manual. The...