The circuit is from 80s Siliconix documentation. The integrated circuit is from the company and is not common today. It can be used operational equivalent more common in our times.
This simple MW radio circuit with two transistors was obtained in an Argentine publication from...
This dimmer for incandescent lamps using triac and an LF7237 IC was found in May 1985 Radio...
The purpose of this 2002 circuit is to monitor the functioning of ordinary incandescent lamps. These...