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.
We found this circuit in a technical documentation from Texas Instruments. The signal is...
The circuit shown in the figure allows a pressure switch to be used to turn a load on and off in a...
This circuit for a 6.3 V lamp was found in a 1970’s RCA documentation. The circuit applies to any triac...