Therapeutic pulse generation, control and transmission circuit

Claim 1

IN ELECTROTHERAPEUTIC APPARATUS, A POWER RADIATING HEAD INCLUDING A PRIMARY COIL, A POWER RADIATING SECONDARY COIL HAVING MULTIPLE TURNS CONNECTED IN A SPIRAL, AND A CONDENSER ELECTRICALLY CONNECTED ACROSS THE SECONDARY COIL, AND INPUT CIRCUIT MEANS CONNECTED TO TRANSMIT POWER PULSES TO SAID PRIMARY COIL, SAID INPUT CIRCUIT MEANS INCLUDING OSCILLATOR, AMPLIFIER AND CONTROL MEANS FOR CREATING AND TRANSMITTING TO THE HEAD A SEQUENCE OF HIGH FREQUENCY PULSES AND FOR CONTROLLING THE SELECTED AMPLITUDE OF SAID PULSES AND THE INTERVALS THEREBETWEEN, SAID OSCILLATOR MEANS PROVIDING A HIGH FREQUENCY SIGNAL, SAID AMPLIFIER MEANS INCLUDING FIRST AMPLIFIER MEANS AND POWER AMPLIFIER MEANS CONNECTED IN SERIES SEQUENCE WITH SAID OSCILATOR MEANS, SAID CONTROL MEANS INCLUDING PULSE INTERVAL CONTROL MEANS CONNECTED WITH SAID FIRST AMPLIFIER MEANS TO INTERMITTENTLY INTERRUPT TRANSMISSION OF SAID SIGNAL TO SAID POWER AMPLIFIER MEANS, SAID CONTROL MEANS ALSO INCLUDING PULSE AMPLITUDE CONTROL MEANS CONNECTED WITH SAID POWER AMPLIFIER MEANS TO PROVIDE AMPLITUDE SELECTION OF POWER PULSES TRANSMITTED TO SAID HEAD, SAID INPUT CIRCUIT MEANS INCLUDING A COIL HAVING AN ADJUSTABLE TAP CONNECTED IN SERIES BETWEEN THE POWER AMPLIFIER MEANS AND ONE END TERMINAL OF THE PRIMARY COIL AND ADJUSTED TO EFFECT MAXIMUM ENERGY TRANSFER TO THE HEAD FOR RADIATION BY THE SECONDARY COIL ACCOMPANIED BY A NULL VOLTAGE REMAINING LOCALIZED SUBSTANTIALLY HALF WAY ALONG THE SPIRAL LENGTH OF THE SECONDARY COIL AND FOR DIFFERENT SELECTED PULSE INTERVALS AND AMPLITUDES.