ELECTRICAL COMPENSATION CIRCUIT UTILIZING TWO TRANSISTORS CONNECTED IN PARALLEL

摘要

A pair of transistors are connected in parallel with the emitters of the transistors connected to ground and the collectors connected together and to a common junction which in turn is connected through a resistor to an output terminal. A first input terminal is connected through an amplifier and a resistor to the common junction. The output of the amplifier is also connected through a diode to the base of the first transistor. The base is also connected through a resistor to a negative biasing voltage. The base of the second transistor is connected through a resistor to a negative biasing voltage. The base of the transistor is also connected through a diode to a second input terminal. The transistors are biased such that a signal appearing on the first input terminal is determinative of the amount of signal compensation appearing at the output terminal and a signal appearing at the second input terminal is determinative of the existence of the compensation.