Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1979-01-25
1980-08-05
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330259, 330278, 330301, 330257, H03F 345, H03F 304
Patent
active
042164354
ABSTRACT:
The voltage-to-current converter includes first and second transistors having their respective common electrodes arranged to receive between them the voltage to be converted to current. Their output electrodes have connections to first and second current supply means, as well as direct coupled feedback connections to their respective input electrodes. At least one of these feedback connections is via the follower action of a respective further transistor between its input and common electrodes, and converted output current is available at the output electrode of each further transistor. First and second resistances connect the common electrodes of said first and second transistors to a node supplied quiescent current by a third current supply means, and their combined resistance controls the voltage-to-current conversion gain.
REFERENCES:
patent: 3710270 (1973-01-01), Addis et al.
patent: 4004247 (1977-01-01), Van de Plassche
Limberg A. L.
Mullins James B.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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