Found elsewhere in this section, but from other sources, this circuit is from Motorola documentation. The circuit uses a triac of the time and a tripping transformer. The circuit is for 110 V network.
This circuit was found in a 1964 documentation. It shows how to achieve automatic gain control for...
This 1967 General Electric circuit makes use of an array of 3 (integrated) transistors for an...
This circuit was found in a publication of1994, originally obtained from the National...