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.
The figure shows how to use an oscilloscope for diode test. The circuit presents the...
We found this circuit in the October 1991 issue of Radio Electronics magazine. The circuit uses...
This circuit was obtained from an English magazine from 1977. It is a toy musical instrument that...