This power control from a 1968 Motorola manual shows how to use a contemporary diac as a zero-crossing detector. The SCR is of the type depending on the power of the load.
This Vox circuit uses a specific Motorola component. We found the circuit in the 1990 Linear...
This ouput push-pull stage using bipolar transistors was found in a publication of the year 1968....
This circuit was published in a 1979 magazine, but it can still be easily assembled, as the...