Filter overshoot control circuitry

Details Filter overshoot control circuitry Filter overshoot control circuitry

1987-06-02

1988-04-12

Wan, Gene

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307542, H03K 508

Patent

active

047377259

ABSTRACT:
Presented is a control circuit for controlling, i.e., preventing, filter overshoot in stereophonic broadcast equipment, particularly stereophonic FM broadcasting equipment. The circuitry includes an input clipper cooperating with a phase-lag network and a second clipper to condition the primary information signal to anticipate filter overshoot and counteract it through cooperation of comparator and summing circuits that add back into the amplitude-limited signal the clipped off components that exceed in amplitude the amplitude-limited signal, but which are added back in opposite phase.

REFERENCES:
patent: 4460871 (1984-07-01), Orban

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