Using a 4046 PLL we found this circuit in the December 1989 issue of Radio Electronics magazine. The circuit operates at 220kHz, but this frequency can be changed by changing C3.
This circuit found in old documentation can be used on old cars that do not have this feature. The...
The main feature of this circuit is that it provides a sine waveform signal. In this circuit, the...
This zero-crossing switch circuit triggers an SCR when the input voltage goes through zero. The...