This circuit was found in a 1977 timer cookbook. The circuit can generate signals with up to 99% active cycle. The FET can be BF245 or MPF102 and the basic frequency given by R1, R2 and C1.
This circuit is from a documentation from the 70s. The circuit uses logic gates of the time, which...
We found this circuit in the October 1988 Radio Electronics magazine. The circuit is still current...
This CMOS logic-based circuit was found in the April 1974 issue of Radio Electronics magazine. The circuit...