555 Duty Cycle Oscillator (CB24846E)

This circuit was found in the September 1984 issue of Radio Electronics magazine. The circuit has a base frequency given by C1

4 MHz pulse train generator (CB9255E)
This circuit provides a pulse train of 4 MHz or at another frequency determined by the crystal during...
Pulse Encoder (CB4444E)
The number of pulses produced by this circuit depends on the switch pressed. The circuit is from...
Variable Filter (CB4600E)
This circuit prevents the passage of frequencies in a range starting at 1 kHz and can be adjusted...