Integrated signal generator appeared in Radio Electronics magazine in January 1968. The integrated circuits are from the time and the generator produces signals from 5 Hz to 50 kHz.
Found in a magazine 73 for radio amateurs, this circuit has two settings, one for the interval and the...
This circuit consists of a single Hartley oscillator using a bipolar transistor that can generate...
This simple timer, which activates an LED indicator, but which can be modified to activate a...