The figure shows how to associate flip-flops in a shift register to obtain a lower frequency sinusoidal signal. The circuit is from a Radio Electronics from November 1976.
This 1969 Popular Electronics circuit was based on the then recently released BC109, today with...
This circuit consists of a relaxation oscillator with a neon lamp that triggers an SCR, generating high...
This circuit was found in an American documentation from the 90's. The circuit can use almost any...