This circuit was found in a 1966 General Electric book. The triac and the day are from that time and can be replaced by modern equivalents depending on the load.
The purpose of this regulator is to regulate the RMS voltage in an alternating current load. The...
This circuit can use almost any operational amplifier and the FET can be the BF245. The circuit...
Found in a Motorola documentation from 1965, this circuit consists of an electronic ignition with a...