The classic self-quenching oscillator which can be used as a super regenerative detector in a simple RF receiver. In this case the RF signal is applied to the LC tank. The detected signal is taken from the parallel RC tank in the emitter circuit (an LPF must be added to filter out the quenching freguency).
In a practical circuit the 2 nF capacitor should be replaced with a larger one, in order to decrease the quenching frequency to 30-50 kHz, and the oscillator feedback should be tuned to be just above the generation threshold. The 10 Ohm resistor in the LC tank models the loss in the coil and does not need to be added in practice.
