HARTLEY OSCILLATOR

HARTLEY OSCILLATOR

The Hartley Oscillator is characterised by an LC circuit in its collector. The base of the transistor is held steady and a small amount of signal is taken from a tapping on the inductor and fed to the emitter to keep the transistor in oscillation.


The transformer can be any speaker transformer with centre-tapped primary.

The frequency is adjusted by changing the 470p.
 

HARTLEY OSCILLATOR