This circuit is from a 1967 US publication. The configuration can serve as a basis for designs with modern components.
CL88020 is a Next-Generation Device Designed for Offline Lighting CHANDLER, Ariz., July 10, 2017 — A...
We found this alarm circuit in a Radio Electronics magazine from July 1990. The power transistor must be...
This circuit was found in a 1965 General Electric publication. The circuit can be adapted to...