Network to couple a load to a transistorized amplifier

Claim 1

IN AN AMPLIFIER INCLUDING FIRST AND SECOND SEMICONDUCTIVE DEVICES, EACH OF SAID SEMI-CONDUCTIVE DEVICES HAVING A FIRST, A SECOND AND A THIRD ELECTRODE, AN AC SIGNAL-PRODUCING MEANS, MEANS TO CONNECT SAID FIRST ELECTRODES TO SAID SIGNAL-PRODUCING MEANS TO CONTROL THE CONDUCTION OF THE SEMI-CONDUCTIVE DEVICES, MEANS INCLUDING A GROUND CONNECTION TO BIAS THE SEMI-CONDUCTIVE DEVICES, MEANS TO CONNECT SAID SECOND ELECTRODES TO SAID BIASING MEANS, THE SEMI-CONDUCTIVE DEVICES BEING DISPOSED IN SERIES ACROSS SAID BIASING MEANS BY CONNECTING SAID THIRD ELECTRODES TOGETHER, THE CONNECTION OF SAID THIRD ELECTRODES CONSTITUTING AN ELECTRODE JUNCTION, AND A LOAD FOR THE AMPLIFIER, THE IMPROVEMENT COMPRISING A COUPLING NETWORK, SAID COUPLING NETWORK INCLUDING MEANS TO CONNECT ONE SIDE OF THE LOAD TO SAID ELECTRODE JUNCTION, A CAPACITIVE IMPEDANCE CONNECTED BETWEEN THE OTHER SIDE OF THE LOAD AND SAID GROUND CONNECTION, A SECOND JUNCTION CONSTITUTED BY THE CONNECTION OF THE CAPACITIVE IMPEDANCE TO THE LOAD, AND MEANS TO PROVIDE FEEDBACK CONNECTED TO SAID SECOND JUNCTION, TO SAID SIGNAL PRODUCING MEANS, AND TO SAID ELECTRODE JUNCTION, WHEREBY SAID CAPACITIVE IMPEDANCE ISOLATES SUBSTANTIALLY ALL THE DIRECT CURRENT FROM SAID GROUND CONNECTION TO PROVIDE DIRECT CURRENT FEEDBACK TO SAID SIGNAL-PRODUCING MEANS WHILE BYPASSING MOST OF THE AC SIGNAL THROUGH THE LOAD DEVICE TO GROUND.