This oscillator produces a modulated signal using a unijunction transistor. We found it in an American documentation from 1965. The circuit modulates in frequency the generated signal.
This circuit is from a 1967 RCA documentation. Components can be replaced with modern equivalents. The...
It can be obtained from Mouser Electronics new TPS54A20 Texas Instruments consisting of step-down...
In the figure we have a typical detector stage for a radio receiver. The circuit is from 1963,...