The purpose of this circuit is to improve a trigger circuit using a zener diode. The circuit was found in an American documentation from 1964. It can be improved using equivalent modern components.
In the figure we have a typical polarization circuit for MOSFETs with a high impedance...
This equalizer was found in the May 1978 issue of Radio Electronics magazine. The component values...
Found in a 1980s American documentation, this crystal-controlled oscillator generates 100 MHz...