Electrical apparatus for generating current pulses

Claim 1

IN ELECTRICAL APPARATUS FOR GENERATING CURRENT PULSES OF SPARK INTENSITY, THE COMBINATION OF AN ARMING CIRCUIT AND A TRIGGERING CIRCUIT CONTROLLING THE DISCHARGE OF THE ARMING CIRCUIT, THE ARMING CIRCUIT COMPRISING A GENERATOR OF DIRECT CURRENT PULSES, A FIRST STORAGE CONDENSER CONNECTED TO BE CHARGED BY THE SAID PULSES IN THE ARMING CIRCUIT SUBSTANTIALLY TO THE POTENTIAL OF SAID PULSES, A SPARK GAP DEVICE, HAVING A FIRST, MAIN DISCHARGE GAP WITH A BREAKDOWN VOLTAGE VALUE APPRECIABLY GREATER THAN THE POTENTIAL OF SAID PULSES, AND A SECOND TRIGGERING GAP OF SMALLER BREAKDOWN POTENTIAL THAN THE FIRST GAP AND LOCATED IN PROXIMITY TO THE FIRST GAP, AND A DISCHARGE CIRCUIT CONNECTED TO THE MAIN GAP OF THE SPARK GAP DEVICE AND ADAPTED TO BE CONNECTED TO A LOAD DEVICE OPERATED BY A CURRENT PULSE OF SPARK INTENSITY, THE TRIGGERING CIRCUIT BEING ADAPTED TO BE CONNECTED TO A SOURCE OF CURRENT PULSES AND COMPRISING A DISCRIMINATING FILTER WHICH PASSES ONLY PULSES OF A PREDETERMINED CHARACTER, A PULSE VOLTAGE STEP-UP TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, THE PRIMARY WINDING BEING CONNECTED TO BE FED BY FILTERED PULSES OF THE TRIGGERING CIRCUIT, A SECOND STORAGE CONDENSER CONNECTED TO BE CHARGED BY THE SECONDARY WINDING OF THE PULSE TRANSFORMER, AND A CIRCUIT CONNECTING THE SECOND STORAGE CONDENSER TO THE TRIGGERING GAP OF THE SPARK GAP DEVICE, THE SECOND STORAGE CONDENSER BEING ADAPTED TO BE CHARGED TO A POTENTIAL HIGHER THAN THE BREAKDOWN VOLTAGE OF THE TRIGGERING GAP AND THEREAFTER TO DISCHARGE THROUGH THE TRIGGERING GAP TO INITIATE DISCHARGE OF THE FIRST STORAGE CONDENSER THROUGH THE MAIN GAP OF THE SPARK DISCHARGE DEVICE.