This circuit was obtained from 1967 documentation. It uses a sensor to determine the trigger point. The components are of the time, difficulty to obtain these days.
The circuit shown is from the Motorola Linear Databook of 1990. This circuit converts signals in...
This circuit is from the SGS Integrated Circuits Manual of 1982. The integrated circuit used is...
This circuit produces sounds of 6 different notes depending on the keys activated. The circuit is from a...