Manual Clock Pulser (CB6467E)

This anti-bounce circuit was found in a 1967 US documentation. Modern transistors such as the 2N2222 can be used. The circuit acts as a shield.

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Guitar Tremolo (CB6709E)
This circuit is from an Electronics World of 1964. The circuit can be made with modern...
Variable Frequency Oscillator (VFO) (CB13123E)
The Variable Frequency Oscillator (VFO) or Variable Frequency Oscillator shown in the figure can...
Fuzz effect (CB17975E)
This guitar effect circuit was found in a 2002 documentation. The circuit can be powered by a 9 V...