This circuit is from an old documentation, making use of an operational of the time. The circuit can be adapted to use modern components. The power supply must be symmetrical.
We found this circuit in a 1964 Electronic Design. It divides the frequency of a 20 MHz signal by...
This circuit was found in the November 1987 Radio Electronics magazine. The trigger voltage is...
This high-powered megaphone circuit is from a Radio Electronics from December 1964. Note the use...