Controlled rectifier relaxation oscillator

Claim 1

AN OSCILLATORY CIRCUIT COMPRISING IN COMBINATION TERMINALS FOR CONNECTION TO A D.C. SOURCE, A SWITCHABLE RECTIFIER CONNECTED IN CIRCUIT WITH SAID TERMINALS, SAID SWITCHABLE RECTIFIER HAVING AN ANODE, A CATHODE, AND A GATE, AND SAID SWITCHABLE RECTIFIER BEING SWITCHED ON BY POSITIVE PULSES APPLIED BETWEEN ITS GATE AND CATHODE, AND BEING SWITCHED OFF BY NEGATIVE PULSES APPLIED BETWEEN ITTS GATE AND CATHODE, A LOAD IN THE ANOE-CATHODE CIRCUIT OF SAID SWITCHABLE RECTIFIER, A FIRST CAPACITOR, A CHARGING CIRCUIT FOR SAID CAPACITOR WHEN SAID SWITCHABLE RECTIFIER IS NONCONDUCTIVE, A FIRST FOUR LAYER DIODE, MEANS CONNECTING SAID FIRST FOUR-LAYER DIODE IN CIRCUIT WITH SAID FIRST CAPACITOR, SAID FIRST FOUR-LAYER DIODE BREAKING DOWN WHEN THE VOLTAGE ACROS SAID FIRST CAPACITOR REACHES A PREDETERMINED VALUE, A DISCHARGE PATH FOR SAID CAPACITOR THROUGH THE GATE AND CATHODE OF SAID SWITCHABLE RECTIFER WHEN SAID FIRST FOUR-LAYER DIODE BREAKS DOWN, DISCHARGE OF SAID FIRST CAPACITOR RENDERING SAID SWITCHABLE RECTIFIER CONDUCTIVE, A SECOND CAPACITOR, A CHARGING PATH FOR SAID SECOND FOURWHEN SAID SWITCHABLE RECTIFIER IS CONDUCTIVE, A SECOND FOURLAYER DIODE, MEANS CONNECTING SAID SECOND FOUR-LAYER DIODE IN CIRCUIT WITH SAID SECOND CAPACITOR, SAID SECOND FOURLAYER DIODE BREAKING DOWN WHEN THE VOLTAGE ACROSS SAID SECOND CAPACITOR REACHES A PREDETERMINED VALUE, AND A DISCHARGE PATH FOR SAID SECOND CAPACITOR THROUGH THE GATE AND CATHODE OF SAID SWITCHABLE RECTIFIER WHEN SAID SECOND FOUR-LAYER DIODE BREAKS DOWN, DISCHARGE OF SAID SECOND CAPACITOR RENDERING SAID SWITCHABLE RECTIFIER NON-CONDUCTIVE.