Found in a 1967 General Electric documentation this circuit uses unijunction transistors that may be equivalent to those indicated. The number of stages can be modified.
This small-range MW transmitter can be used as a wireless microphone. The circuit is from an...
We found this circuit in an English magazine from 1980. The circuit can be easily assembled even...
We found this circuit in a 1968 Electronics World. It fires a buzzer if the ignition key is turned on...