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 found this circuit in an old American documentation from years 80. The diode determines the frequency...
April 2017 - Mouser Electronics already has the MAX4007 from Maxim Integrated in its inventory, an...
This old configuration using a germanium transistor was designed to operate with variable...