Found in an Electronic Design of 1964 this circuit has a control for the frequency and another for the active cycle the signal. The bipolar transistor can be a general-purpose type.
This is a circuit that should not be used for readers interested in a fair game. The circuit...
This interesting idea was obtained in a 1982 documentation and can be used for special effects in...
We found this circuit in an old publication from Argentina. The relay must be of the sensitive type,...