We found this circuit in the September 1992 issue of Radio Electronics magazine. It can be triggered by any signal above ½ Vcc, where Vcc is the supply voltage.
This simple oscillator with just one transistor has a frequency determined by the characteristics of the...
We found this circuit in the January 1979 issue of Radio Electronics magazine. Components are...
Found in a 90’s Radio Electronics magazine, this circuit uses a component from the time, difficult...