CURRENT AMPLIFIER Russian patent published in 1996 - IPC

FIELD: measurement technology and computer engineering. SUBSTANCE: current amplifier has transistors 1-4, current generators 5-7 built up of only two stages: input stage using transistors T1 and T2 and output stage using transistor T4; intermediate stage of emitter follower used in prototype is replaced by practically nonsmearing part (diode built around transistor T3). Collector of first transistor T1 is connected to that of T4 and to output of current amplifier and input current goes to load which reduces gain of output stage built around T4 thereby reducing bias current of T4. EFFECT: extended gain control range, reduced input resistance. 2 dwg