This circuit is from a Radio Electronics from October 1963. The transistor is a power transistor of the time, and two transformers are used. The input has 10k impedance and is powered by 12 V.
This circuit with the CA3130 has a feedback system that works as a lock. The circuit is from a...
This guitar effect circuit uses components that are still common in our market. We found the...
This circuit is from a 1967 US publication. The configuration can serve as a basis for designs...