We found this circuit in a French documentation from the 80's. The components used are still common and the circuit can generate signals from 10 Hz to 100 kHz.
This circuit, which can be used as a shield for microcontrollers, provides 50% active cycle output...
We found this circuit in a 1968 General Electric publication. The circuit uses an SCR of the time,...
This circuit allows the division of the frequency generated by an oscillator with the 4069 by two,...