This circuit was obtained in a magazine for radio amateurs 73 of the 90s. The circuit is based on the XR2206, which is not a component found easily today.
This circuit was found in the Spanish magazine No longer in existence, Mundo Electrónico, in a...
Found in the May 1975 issue of Radio Electronics magazine, this circuit turns on after a certain...
Capacitors C2, C3 and C4 determine the frequency of this simple oscillator. Transistor can be...