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 is a traditional audio amplifier configuration with complementary Darlington transistors. The power...
Found in 1967 General Electric documentation, this circuit is intended for the control of...
In the figure we show a configuration for a crystal controlled overtone oscillator using a...