Found in the May 1988 issue of Radio Electronics magazine, this circuit is sensitive to small variations in input voltage. The power supply must be symmetrical.
We found this CMOS circuit based on the PLL4046 in the December 1989 issue of Radio Electronics magazine....
This circuit can be used as an answering password system in a store, office, or other location....
This fuzz uses only one transistor that can be the BC548. Signal input and output cables must be...