Logarithmic electronic gain control circuit

Details Logarithmic electronic gain control circuit Logarithmic electronic gain control circuit

1983-01-03

1985-04-30

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330 85, 330260, H03F 345, H03G 330

Patent

active

045147027

ABSTRACT:
The invention relates to an electronic gain control arrangement with a logarithmic control characteristic. Use is made of the property of current amplifier circuits having bipolar transistors that the current distribution varies as an exponential function of the control voltage. The circuit arrangement is symmetrical, so that even harmonics are compensated for.

REFERENCES:
patent: 4379995 (1983-04-01), Yamada et al.

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