Monostable multivibrator and FM detector circuit employing commo

Details Monostable multivibrator and FM detector circuit employing commo Monostable multivibrator and FM detector circuit employing commo

1978-12-13

1981-08-04

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

329128, 307542, 307246, 330254, H03K 3033, H03K 1716

Patent

active

042824486

ABSTRACT:
This invention discloses a monostable multivibrator which is useful for an FM detector circuit of a pulse count system. The monostable multivibrator has a time constant circuit which includes a capacitor, an amplifier circuit which receives an output of the time constant circuit, a positive feedback circuit which is connected between an output end of the amplifier circuit and an input end of the time constant circuit, and a trigger terminal which is disposed in a circuit loop constructed of the time constant circuit, the amplifier circuit and the positive feedback circuit; and is characterized in that the amplifier circuit is a differential amplifier which is made up of a pair of transistors connected in the differential form, the transistors being connected in common through emitter resistances connected in series with respective emitters thereof. Thus, the monostable multivibrator can provide pulse signals of a fixed pulse width without being influenced by noise.

REFERENCES:
patent: 3124706 (1964-03-01), Alexander
patent: 3140446 (1964-07-01), Myers et al.
patent: 3143658 (1964-08-01), Woods et al.
patent: 3193706 (1965-07-01), Creamer et al.
patent: 3435362 (1969-03-01), Pamlenyi
patent: 3883756 (1975-05-01), Dragon
patent: 4009404 (1977-02-01), Kuo
patent: 4134078 (1979-01-01), Arai et al.

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