H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/22
H03F 1/32 (2006.01) H03F 1/08 (2006.01) H03F 1/26 (2006.01) H03F 3/45 (2006.01)
Patent
CA 1192274
CURRENT AMPLIFIER ABSTRACT OF THE DISCLOSURE A current amplifier for use with an input voltage comprises a current to voltage converting circuit which converts the input voltage to output currents, and a current multiplier circuit which multiplies the output currents from the voltage to current converting circuit. The voltage to current converting circuit includes first and second transistors each having base, collector and emitter electrodes, with the base electrodes of the first and second transistors being respectively connected to first and second input terminals receiving the input voltage, third and fourth transistors and having base, collector and emitter electrodes, with the base electrodes of the third and fourth transistors being respectively connected to the emitter electrodes of the first and second transistors, each of the third and fourth transistors supplying one of the output currents, a resistor connected between the emitter electrodes of the third and fourth transistors, and a bias current source which supplies a bias current to the resistor. The current multiplier circuit includes a current inverting circuit and a feedback circuit connected between the converting circuit and the current inverting circuit.
430993
Katakura Masayuki
Tenma Takumi
Gowling Lafleur Henderson Llp
Sony Corporation
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