This Motorola circuit uses only one transistor. The circuit is from 1965 documentation. The transistor must have a collector current rated at least to 12 A.
This circuit is from an Electronics World of 1964. The circuit can be made with modern...
The Variable Frequency Oscillator (VFO) or Variable Frequency Oscillator shown in the figure can...
This guitar effect circuit was found in a 2002 documentation. The circuit can be powered by a 9 V...