This circuit was found in 1960s Radio Electronics. The circuit uses components from that time. The triac is according to the controlled load. The sensor is a common LDR.
This circuit was found in General Electric documentation from 1964. It makes use of a PUT, called the...
The circuit shown in the figure is suggested by ON Semiconductor (www.onsemi.com), based on its...
This circuit for discharging NiCad batteries limits the current to a value that can be adjusted in the...