Precision remotely-switched attenuator

Details Precision remotely-switched attenuator Precision remotely-switched attenuator

1986-04-15

1987-09-22

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330284, H03G 330

Patent

active

046958061

ABSTRACT:
A precision remotely-switched active attenuator comprises a differential amplifier configured with a pair of operational amplifiers that stabilize bias voltages in the differential amplifier and cause more or less signal current to be diverted from an output in accordance with the value of a selectable resistor. Circuit gain can be varied from unity to zero, depending upon the value of the selectable resistor.

REFERENCES:
patent: 4523153 (1985-06-01), Itoh

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