The presented circuit uses an opto-SCR. We found the circuit in the GE semiconductor manual. Equivalent triacs, depending on the load current and voltage, can be used.
This circuit was originally designed to automatically turn on a television when a video game is...
We found this transistor circuit in a 1967 General Electric documentation. The circuit makes use of...
This circuit was obtained from an English magazine from 1977. It is a toy musical instrument that...