Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1984-09-17
1986-07-01
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330261, H03F 345
Patent
active
045982538
ABSTRACT:
The JFET transistor differential amplifier herein serves as an input stage, as for an electrometer operational amplifier, and exhibits high input impedance and low leakage current. This is achieved by biasing the JFET transistors so as to operate in the ohmic region rather than the saturation region of their characteristic drain current-gate to source voltage curve.
Mego Thomas J.
Reindel Kenneth A.
Keithley Instruments Inc.
Mullins James B.
Wan G.
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