This circuit was found in an American documentation from the 80's. The sensor is a special integrated circuit, uncommon in our times. There are modern equivalents.
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...