This 50% active cycle TTL clock generates signals from 4 to 20 Hz. Its power must be supplied with 5 V and other frequencies can be generated with capacitor replacement.
We obtained this circuit in a Maxim documentation from the 90s. The circuit is based on the...
This circuit was found in a 1965 General Electric publication. The circuit can be adapted to...
Based on Radio Shack 276-137, this circuit was found in the December 1995 issue of Electronics Now magazine....