Filter circuit

Details Filter circuit Filter circuit

1987-12-29

1989-08-22

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307240, 307556, 328167, 330303, 330306, H03K 500, H03K 1756, H03B 104, H03F 304

Patent

active

048598810

ABSTRACT:
A double integration type filter circuit, consisting of a pair of integrators connected in series with each other, has a changeover switch for commutating the filter characteristics to a filter configuration which emphasizes portions proper to the characteristics of the filter circuit to facilitate filter adjustment to reduce filter adjustment time and to realize improved accuracy while providing for automatic adjustment of the filter characteristics.

REFERENCES:
patent: 3701037 (1972-10-01), Holsinger
patent: 4257006 (1981-03-01), Schaumann
patent: 4284965 (1981-08-01), Higashi et al.
patent: 4292468 (1981-09-01), Yokoyama
patent: 4328591 (1982-05-01), Baghdady
patent: 4429281 (1984-01-01), Ito et al.
patent: 4513249 (1985-04-01), Baghdady
patent: 4651034 (1987-03-01), Sato
patent: 4710654 (1987-12-01), Saitoh et al.
patent: 4812733 (1989-03-01), Yamamoto et al.
J. T. Trnka, "Integrating Filter for Threshold Detectors", IBM Technical Disclosure Bulletin vol. 20, No. 8 Jan. 1978.
L. E. Thomas, "the Biquad: Part I-Some Practical Design Considerations," IEEE, vol. CT18, No. 3 May 1971.

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