Wide band current limiter

Claim 1

A BATTERY LIMITING APPARATUS WHICH COMPRISES LOW IMPEDANCE AMPLIFIER MEANS SUPPLIED WITH FREQUENCY MODULATED SIGNAL CURRENTS, LOW IMPEDANCE BUFFER AMPLIFIER MEANS, A FIRST SIGNAL PATH INCLUDING A PAIR OF SERIALLY CONNECTED OPPOSITELY POLED DIODES EXTENDING BETWEEN SAID AMPLIFIER MEANS AND SAID BUFFER MEANS, MEANS FOR INDIVIDUALLY BIASING SAID DIODES TO CONDUCTION FOR SIGNALS IN SAID FIRST PATH WITHIN A PRESELECTED RANGE OF SIGNAL CURRENT MAGNITUDES AND FOR BIASING SAID BUFFER AMPLIFIER MEANS TO CONDUCTION AT A LOW IMPEDANCE FOR A WIDE RANGE OF APPLIED SIGNAL CURRENT MAGNITUDES, EACH OF SAID BIASING MEANS COMPRISING A RESISTIVE NETWORK WHICH INCLUDES AN ADJUSTABLE RESISTOR CONNECTED TO A SOURCE OF POTENTIAL THE RESISTANCE OF EACH OF SAID ADJUSTABLE RESISTORS BEING RELATED TO THE RESISTANCE OF THE ADJUSTABLE RESISTORS IN THE OTHERS OF SAID NETWORKS SUCH THAT A PROPORTIONAL CHANGE IN THE RESISTANCES OF ALL OF SAID ADJUSTABLE RESISTORS PRODUCES A SUBSTANTIALLY EQUAL CHANGE IN THE BIAS OF EACH OF SAID DIODE AND A PROPORTIONAL CHANGE IN THE BIAS OF SAID BUFFER AMPLIFIER SUFFICIENT TO MAINTAIN THE CONDUCTION OF SAID BUFFER AMPLIFIER SUBSTANTIALLY A CONSTANT, A SECOND SIGNAL PATH INCLUDING A DIODE EXTENDING BETWEEN SAID AMPLIFIER MEANS AND A POINT OF REFERENCE POTENTIAL, A THIRD SIGNAL PATH INCLUDING A DIODE EXTENDING BETWEEN THE JUCTION OF SAID SERIALLY CONNECTING DIODES IN SAID FIRST SIGNAL PATH AND A POINT OF REFERENCE POTENTIAL, SAID DIODES IN SAID SECOND AND SAID THIRD PATHS BEING BIASED TO NONCONDUCTION FOR SIGNAL CURRENTS WITHIN SAID PRESELECTED RANGE OF SIGNAL CURRENTS AND INDIVIDUALLY TO CONDUCTION FOR SIGNAL CURRENTS OUTSIDE OF SAID PRESELECTED RANGE OF CURRENTS, AND MEANS FOR SIMULTANEOUSLY VARYING THE RESISTANCES OF SAID ADJUSTABLE RESISTORS PROPORTIONALLY, THEREBY TO ALTER SYMMETRICALLY THE CONDUCTION CHARACTERISTICS OF SAID OPPOSITELY POLE DIODES AND TO MAINTAIN THE CONDUCTION LEVEL OF SAID BUFFER AMPLIFIER MEANS SUBSTANTIALLY A CONSTANT.