Transistorized horizontal sweep circuit and associated transformer

Claim 1

A SCANNING GENERATOR FOR DEVELOPING IN A SUBSTANTIALLY INDUCTIVE MAGNETIC DEFLECTION YOKE A PERIODICALLY RECURRING SAWTOOTH CURRENT WAVEFORM HAVING DURING EACH CYCLE A RELATIVELY LONG TRACE INTERVAL AND A RELATIVELY SHORT RETRACE INTERVAL, COMPRISING: AN OSCILLATING INCLUDING A FIRST TRANSISTOR, A LOAD WHICH IS AT LEAST PARTIALLY INDUCTIVE, AND MEANS FOR ALTERNATELY RENDERING SAID FIRST TRANSISTOR CONDUCTIVE DURING SAID TRACE INTERVALS AND NON-CONDUCTIVE DURING SAID INTERVENING RETRACE INTERVALS, SAID INDUCTIVE LOAD THEREBY BUILDING UP AND STORING ENERGY DURING AT LEAST A PORTION OF EACH OF SAID TRACE INTERVALS; AND OUTPUT STAGE INCLUDING A SECOND TRANSISTOR HAVING INPUT AND OUTPUT ELECTRODES, THE LATTER ELECTRODES BEING COUPLED TO SAID DEFLECTION YOKE; MEANS COUPLED TO SAID INDUCTIVE LOAD FOR SUPPLYING A DRIVE SIGNAL TO THE INPUT ELECTRODES OF SAID SECOND TRANSISTOR TO RENDER SAID SECOND TRANSISTOR CONDUCTIVE DURING EACH OF SAID TRACE INTERVALS THEREBY TO ESTABLISH AN OUTPUT CURRENT IN SAID DEFLECTION YOKE OF SAWTOOTH WAVESHAPE, SAID DRIVE SIGNAL CONTAINING A COMPONENT DURING EACH OF SAID RETACE INTERVALS, RESULTING FROM SAID STORED ENERGY, OF AN AMPLITUDE AND POLARITY TO RENDER SAID SECOND TRANSISTOR NONCONDUCTIVE; AND BIASING MEANS, COMPRISING A PARALLEL COMBINATION OF A RESISTOR AND A CAPACITOR INCLUDED IN SAID DRIVE SIGNAL SUPPLYING MEANS, FOR DEVELOPING A REVERSE BIAS VOLTAGE OF A POLARITY MEANS, FOR DEVELOPING A REVERSE BIAS VOLTAGE OF A POLARITY TENDING TO RENDER SAID SECOND TRANSISTOR NON-CONDUCTIVE.