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 the Texas Instruments opto-electronics manual. The button resets and the...
This circuit is from a 1992 documentation, but the components used can still be easily assembled. The...
This interesting amplifier for frame antenna for the medium wave range was found in a Popular...