This circuit is from a 1974 publication by Motorola. The unijunction may be 2N2646 and bipolar BC558 and BC548. The pulse duration depends on the capacitor.
This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for...
Found in a manufacturer documentation from the 90s, this circuit makes use of period components. The...
This RCA circuit provides timing intervals from 5 to 120 seconds. The components are of the time,...