Power oscillator with remote tank

Claim 1

APPARATUS FOR SUPPLYING HIGH-VOLTAGE HIGH FREQUENCY A.C. POWER TO CAPACITIVE LOAD CONSTITUTED BY FIRST AND SECOND METALLIC ELECTRODES AND LOCATED AT A REMOTE POSITION RELATIVE TO AN ELECTRONIC TRANSDUCER, COMPRISING AN INDUCTOR POSITIONED CLOSELY ADJACENT SAID CAPACITIVE LOAD AND HAVING ITS OPPOSITE ENDS RESPECTIVELY CONNECTED TO SAID METALLIC ELECTRODES, SAID INDUCTOR HAVING FIRST AND SECOND TAP TERMINALS SPACED APART A MINOR PORTION OF THE LENGTH OF THE INDUCTOR, SAID ELECTRONIC TRANSDUCER HAVING A CONDUCTIVE CIRCUIT INCLUDING FIRST AND SECOND ELEMENTS AND A CONTROL ELEMENT ADAPTED TO CONTROL THE CONDUCTIVITY OF SAID CONDUCTIVE CIRCUIT, A FIRST CONDUCTOR INTERCONNECTING SAID FIRST TAP TERMINAL AND SAID FIRST TRANSDUCER ELEMENT, A SECOND CONDUCTOR INTERCONNECTING SAID SECOND TAP TERMINAL AND SAID SECOND TRANSDUCER ELEMENT, A PROBE ELECTRODE POSITIONED ADJACENT BUT SPACED AWAY FROM SAID SECOND ELECTRODE AND INTERCONNECTED BY A THIRD CONDUCTOR TO SAID TRANSDUCER CONTROL ELEMENT, AND A SOURCE OF D.C. POWER ADAPTED TO ESTABLISH A D.C. POTENTIAL OF A FIRST PREDETERMINED VALUE BETWEEN SAID FIRST AND SECOND TRANSDUCER ELEMENTS, WHEREBY OSCILLATORY CURRENTS WILL FLOW IN THE L-C CIRCUIT CONSTITUTED BY SAID INDUCTOR AND CAPACITIVE LOAD AND THE A.C. POTENTIAL DEVELOPED ACROSS SAID CAPACITIVE LOAD GREATLY EXCEEDS SAID FIRST POTENTIAL VALUE AND THE OSCILLATORY CURRENT IS MAINTAINED BY A SIGNAL CAPACITIVELY COUPLED FROM SAID SECOND ELECTRODE VIA SAID PROBE ELECTRODE TO SAID TRANSDUCER CONTROL ELEMENT.