Control circuit for voltage controlled variable attenuator

Details Control circuit for voltage controlled variable attenuator Control circuit for voltage controlled variable attenuator

1982-06-14

1984-06-26

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330256, 330284, 330145, H03G 330

Patent

active

044568860

ABSTRACT:
A voltage controlled attenuator includes a control circuit having variable impedance means whose impedance varies in a stepwise fashion as an input voltage is varied. In this manner, the attenuation characteristic of the attenuator can be made to vary stepwise in slope or inclination to improve its efficacy for use as a volume control device in audio apparatus.

REFERENCES:
patent: 3582807 (1971-06-01), Addis

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