This 25 W phase photo control was found in a 1965 General Electric publication. The circuit uses a LASCR which is an unusual SCR photo today.
This well-known siren configuration using complementary transistors is from a 1980s documentation. The...
This circuit is from the time when the 741 was first introduced. It was published in the February 1971...
This circuit consists of a small inverter that can generate a few hundred volts of DC voltage...