Shaping circuit

Claim 1

AN ELECTRONIC WAVE-SHAPING CIRCUIT FOR DEVELOPING A VOLTAGE THE AMPLITUDE OF WHICH IS PROPORTIONAL TO THE NTH POWER OF AN INPUT VOLTAGE, WHERE N IS GREATER THAN THREE, COMPRISING, A FIRST TRANSISTOR INCLUDING A BASE, A COLLECTOR AND AN EMITTER, A SOURCE OF UNIDIRECTIONAL VOLTAGE INCLUDING FIRST AND SECOND TERMINALS, A FIRST NON-POLARIZED TWO TERMINAL VARISTOR THE RESISTANCE OF WHICH IS INVERSELY PROPORTIONAL TO THE NTH POWER OF THE VOLTAGE APPEARING THEREACROSS, SAID FIRST VARISTOR BEING CONNECTED BETWEEN SAID EMITTER AND SAID FIRST TERMINAL OF SAID SOURCE, A LOAD RESISTOR, ACROSS WHICH SAID OUTPUT VOLTAGE IS DEVELOPED, CONNECTED BETWEEN SAID COLLECTOR AND SAID SECOND TERMINAL OF SAID SOURCE, A SECOND TRANSISTOR, INCLUDING A BASE, A COLLECTOR AND AN EMITTER, CONNECTED IN AN AMPLIFIER CIRCUIT, MEANS FOR APPLYING SAID INPUT VOLTAGE TO THE BASEEMITTER CIRCUIT OF SAID SECOND TRANSISTOR, MEANS FOR APPLYING THE OUTPUT OF SAID AMPLIFIER CIRCUIT TO THE BASE-EMITTER CIRCUIT OF SAID FIRST TRANSISTOR, AND A SECOND VARISTOR, SIMILAR TO SAID FIRST VARISTOR, CONNECTED IN THE BASE CIRCUIT OF SAID SECOND TRANSISTOR TO VARY THE POTENTIAL OF SAID BASE AS THE TEMPERATURE OF SAID SECOND VARISTOR VARIES, WHEREBY CHANGES IN AMBIENT TEMPERATURE TENDING TO VARY THE CURRENT THROUGH SAID FIRST VARISTOR AND SAID LOAD RESISTOR ARE SUBSTANTIALLY COMPENSATED FOR BY VARIATIONS IN THE CURRENT THROUGH SAID SECOND VARISTOR WHICH VARIES THE BIAS ON SAID BASE OF SAID SECOND TRANSISTOR AND THE GAIN THEREOF.