Current amplifier

Details Current amplifier Current amplifier

1978-05-01

1980-06-03

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

330296, 330307, H03F 304, H03F 342

Patent

active

RE0302970

ABSTRACT:
A three-terminal current amplifier has a current gain substantially independent of the forward current gains of its component transistors. It employs a first transistor with collector-to-base feedback regulating its collector current flow to equal applied input current and a second transistor having a base emitter circuit in parallel with that of the first transistor. Output current from the collector electrode of the second transistor consequently is proportional to the input current. Means are provided for maintaining the collector potentials of the first and second transistors substantially equal to help maintain a fixed relationship between the output and input current amplitudes.

REFERENCES:
patent: 3531730 (1970-09-01), Steckler
patent: 4021749 (1977-05-01), Ishigaki et al.
Black et al., "Gyrator Implementation with Integrable Current Conveyors", IEEE Journal of Solid-State Circuits, vol. SC-6, No. 6, Dec., 1971, pp. 396-399.

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