Found in American documentation from 1969, this circuit uses logic inverters to obtain sequences of 4 pulses. The circuit can be used as a shield.
Found in an American documentation from 1969, this astounding circuitry makes a relay operate on 3 Hz...
Found in American documentation, this circuit can be used as a shield. The technology is CMOS and...
This circuit was found in the September 1993 Electronics Now magazine. It is based on the 555 and...