Blocking oscillator with additional regenerative feedback

Claim 1

A FREQUENCY STABLE PULSE OSCILLATOR COMPRISING (A) A TRANSISTOR HAVING FIRST, SECOND, AND THIRD ELECTRODES; (B) A RESONANT CIRCUIT INCLUDING A TAPPED INDUCTOR AND A CAPACITOR, THE TAP ON SAID INDUCTOR BEING COUPLED TO SAID FIRST ELECTRODE; (C) A FEEDBACK TRANSFORMER HAVING A MAGNETIC CORE AND PRIMARY, SECONDARY, AND OUTPUT WINDINGS, SAID PRIMARY WINDING BEING COUPLED BETWEEN SAID THIRD ELECTRODE AND ONE END OF SAID RESONANT CIRCUIT, THE VOLTAGES PRODUCED ACROSS SAID PRIMARY AND SECONDARY WINDINGS BEING OF OPPOSITE POLARITY; (D) MEANS COUPLING ONE END OF SAID SECONDARY WINDING TO THE SECOND ELECTRODE OF SAID TRANSISTOR; (E) A BIASING NETWORK INCLUDING A RESISTOR AND A BIASING CAPACITOR CONNECTED IN PARALLEL WITH SAID RESISTOR, SAID CAPACITOR DISCHARGING IN THE INTERVAL BETWEEN PULSES; (F) MEANS COUPLING SAID BIASING NETWORK BETWEEN SAID SECONDARY WINDING AND THE OTHER END OF SAID RESONANT CIRCUIT; AND (G) UNIDIRECTIONAL CURRENT MEANS COUPLED ACROSS SAID OUTPUT WINDING, SAID UNIDIRECTIONAL CURRENT MEANS MAINTAINING A LOW IMPEDANCE ACROSS SAID TRANSFORMER WINDINGS WHEN SAID TRANSISTOR IS NON-CONDUCTING.