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 circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
This simple optical alarm circuit was found in the 1991 Electronics Experimenter Handbook. The...
This simple 5.6 V regulator circuit was found in a 1966’s Philips. The zener can be changed to...