Transistor amplifier including gain control and temperature sensitive means

Claim 1

IN VARIABLE GAIN AMPLIFIER APPARATUS COMPRISING, IN COMBINATION; REFERENCE POTENTIAL MEANS; FIRST AND SECOND RESISTANCE MEANS; INPUT SIGNAL MEANS; NPN TRANSISTOR MEANS INCLUDING BASE, COLLECTOR AND EMITTER MEANS; NON TRANSISTOR MEANS INCLUDING BASE, COLLECTOR AND EMITTER MEANS; CAPACITIVE MEANS CONNECTED BETWEEN SAID INPUT MEANS AND SAID BASE MEANS OF SAID NPN TRANSISTOR MEANS; MEANS CONNECTING ONE END OF SAID FIRST RESISTANCE AND ONE END OF SAID SECOND RESISTANCE MEANS TO SAID BASE MEANS OF SAID NPN TRANSISTOR MEANS; CONTROL SIGNAL MEANS CONECTED TO THE OTHER END OF SAID FIRST RESISTANCE MEANS; POWER TERMINAL MEANS CONNECTED TO THE OTHER END OF SAID SECOND RESISTANCE MEANS AND TO SAID EMITTER MEANS OF SAID PNP TRANSISTOR MEANS; OUTPUT MEANS CONNECTED TO SAID COLLECTOR MEANS OF SAID PNP TRANSISTOR MEANS; MEANS CONNECTING SAID COLLECTOR MEANS OF SAID NPN TRANSISTOR MEANS TO SAID BASE MEANS OF SAID PNP TRANSISTOR MEANS; THIRD RESISTANCE MEANS CONNECTED BETWEEN SAID REFERENCE POTENTIAL MEANS AND SAID EMITTER MEANS OF SAID NPN TRANSISTOR MEANS; AND TEMPERATURE SENSITIVE RESISTANCE MEANS CONNECTED BETWEEN SAID EMITTER MEANS OF SAID NPN TRANSISTOR MEANS AND SAID OUTPUT MEANS, SAID TEMPERATURE SENSITIVE RESISTANCE MEANS CHANGING RESISTANCE AS A FUNCTION OF A CONTROL SIGNAL BEING APPLIED TO SAID CONTROL SIGNAL MEANS, THE CONTROL SIGNAL CHANGING THE BIAS CURRENTS FOR SAID TRANSISTOR MEANS AND THEREBY CHANGING THE CURRENT THROUGH SAID TEMPERATURE SENSITIVE RESISTANCE MEANS TO CHANGE THE VOLTAGE GAIN FROM SAID INPUT MEANS OF THE AMPLIFIER TO SAID OUTPUT MEANS.