Found in American documentation from the 1970s, this circuit is intended for amplifying analog TV signals from a vidicon camera.
The four NAND gates of a 4011 are used in the clocked R-S flip-flop shown here. The circuit is set and...
For triggering with the negative transition of the input signal, the circuit indicated for 0 4047...
We found this preamp circuit with tone control for bass and guitar in a 1987 documentation....