NF tone control circuit

Details NF tone control circuit NF tone control circuit

1985-10-15

1986-12-30

Mullins, James B.

Amplifiers

Signal feedback

Including d.c. path for signal feedback

330107, 330108, 330290, 330294, 330305, 333 28T, H03F 134

Patent

active

046331891

ABSTRACT:
An NF (Negative Feedback) tone control circuit in which a circuit gain of unity is maintained for a flat frequency response without the addition of active components. A voltage divider circuit which divides only an a.c. component of the output of an operational circuit is connected between the output of the operational amplifier circuit and a variable impedance circuit, the latter including the variable resistors of the tone control circuit.

REFERENCES:
patent: 3419811 (1968-12-01), Von Recklinghausen et al.
patent: 3816661 (1974-06-01), Husztz et al.

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