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.
This circuit allows the use of the multimeter to measure the dwell meter, a feature used in the...
This circuit controls the temperature of heating elements, which may be lamps covered with...
This circuit can be powered by a voltage of only 2.5 V. Next to the diagram we have the formulas...