This circuit was taken from an article in Electronics Now magazine in February 1995. The power supply must be dual and other operational amplifier can be used.
Found in an Electronic Design from the 90's, this circuit uses an SCR according to the controlled power....
This configuration, which appears in other articles on this website, was found in a European...
This circuit is used to light a 20 W fluorescent lamp from the 12 V of a car battery. The...