This circuit was obtained in an old American documentation. The integrated circuit used is uncommon today. Modern equivalents can be searched.
This circuit is from the Motorola Linear Databook of 1990. The circuit controls a Triac from a...
The circuit shown uses the LM324, but can be implemented with other operational ones. The source...
This circuit makes use of a stroboscopic tube, a component that no longer exists today. The...