This vibrato circuit was found in Motorola's 1966 documentation. The circuit uses transistors of the time that can be replaced with current common types. Power is done with 3 9V batteries.
We found this mains-powered switch circuit in Electronics Now magazine from July 1994. It could be...
This circuit was obtained from Electronics Now magazine, July 1995. The triac depends on the...
This circuit was obtained from a 1980's QST magazine. The circuit can generate 1 to 15 MHz signals...