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.
The output of this circuit can be coupled to a radio control transmitter to perform a...
Although it is a common configuration today, this circuit was taken from an old publication. The...
We found this circuit in Ferranti's 1974 transistor manual. The components are from the period. The...