Vertical deflection circuit

Claim 1

IN A TELEVISION RECEIVER, THE VERTICAL DEFLECTION SYSTEM FOR GENERATING SAWTOOTH SIGNALS HAVING TRACE AND RETRACE PORTIONS, INCLUDING IN COMBINATION, AN OPERATIONAL AMPLI FIER CIRCUIT HAVING A SINGLE ELECTRON VALVE WITH INPUT AND OUTPUT ELECTRODES, AN OUTPUT CIRCUIT COUPLED TO SAID OUTPUT ELECTRODE, A PASSIVE DEGENERATIVE RESISTOR-CAPACITOR WAVE FORMING NETWORK COUPLED FROM SAID OUTPUT AND INPUT ELECTRODE CIRCUIT TO SAID OPERATIVE AT THE FREQUENCY OF THE TRACE PORTIONS OF THE SIGNALS OF RELEASE STORED ENERGY AND CAUSING INCREASED CONDUCTION OF SAIUD ELECTRON VALVE, A PASSIVE REGENERATIVE NETWORK COUPLED BETWEEN SAID OUTPUT CIRCUIT AND SAID INPUT ELECTRODE AND OPERATIVE AT THE FREQUENCY OF THE RETRACE PORTIONS OF THE SIGNALS, IMPEDANCE MEANS EXCLUSIVE OF SAID CONTROL ELECTRODE FOR ISOLATING SAID REGENERATIVE NETWORK AND SAID WAVEFORMING NETWORK, AND SWITCH MEANS OPERATIVE DURING THE REGRACE PORTIONS OF THE SIGNAL FOR CONDUCTING CURRENT TO SAID PASSIVE WAVE FORMING NETWORK TO RESTORE ENERGY THERETO AND FORM A SELF-OSCILLATING SYSTEM.