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 circuit was found in a 1986 publication. However, it can still be easily assembled, as the...
In the figure we have an anti-ring circuit with 4093. The duration of the pulse is given by R1 and...
This circuit was originally indicated to generate audio signal for analog TV sound. The circuit is from...