A.C. amplifier automatic gain control fast attack circuit

Details A.C. amplifier automatic gain control fast attack circuit A.C. amplifier automatic gain control fast attack circuit

1976-05-03

1977-05-17

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330139, 330140, 330141, H03G 320

Patent

active

040244636

ABSTRACT:
A fast-attack circuit is employed in an A.C. amplifier automatic gain control circuit to temporarily apply a D.C. gain control signal immediately to the amplifier circuit in response to a sudden signal increase in excess of a predetermined threshold level to avoid the problems of over-attack and pinch-down which might otherwise arise during the period required for the AGC loop to achieve stabilized control following the inception of the signal increase.

REFERENCES:
patent: 3230458 (1966-01-01), Stangeland
patent: 3620631 (1971-11-01), Stopica et al.

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