Drive circuit for magnetic heads

Claim 1

A DRIVE CIRCUIT FOR PRODUCING A RECORD ON MAGNETIZABLE MATERIAL COMPRISING A FIRST AND SECOND SOURCE OF SIG- E NALS, A MAGNETIC RECORDING HEAD CIRCUIT TWO TERMINALS ONLY, CIRCUIT MEANS CONNECTING EACH OF SAID SOURCES OF SIGNALS WITH A SEPARATE ONE OF SAID TERMINALS TO ENERGIZE SAID HEAD TO PRODUCE A MAGNETOMOTIVE FORCE IN A FIRST AND SECOND DIRECTION RESPECTIVELY IN RESPONSE TO ENERGIZATION OF SAID FIRST AND SECOND SOURCES OF SIGNALS, A CLAMP CIRCUIT MEANS ASSOCIATED WITH EACH OF SAID FIRST AND SECOND SOURCES OF SIGNALS, SAID CLAMP CIRCUIT MEANS EACH INCLUDING A FIRST AND SECOND POTENTIAL SOURCE, DIODE AND IMPEDENCE MEANS SERIALLY CONNECTED TO COUPLE SAID FIRST AND SECOND POTENTIAL SOURCE OF EACH OF SAID CLAMP CIRCUITS FOR CURRENT FLOW THEREBETWEEN, MEANS COUPLING SAID TERMINALS OF SAID RECORDING HEAD INDIVIDUALLY TO THE JUNCTION BETWEEN SAID DIODE AND SAID IMPEDANCE MEANS OF ASSOCIATED ONES OF SAID CLAMP CIRCUIT MEANS WHEREBY SAID IMPEDANCE MEANS EACH PROVIDE A CURRENT PATH FOR CURRENT PASSING THROUGH SAID CIRCUIT MEANS FROM THAT ONE OF SAID FIRST AND SECOND SOURCE OF SIGNALS ASSOCIATED WITH THE OTHER OF SAID CLAMP CIRCUIT MEANS.