Integrating circuit for separating a wide pulse from a narrow pu

Details Integrating circuit for separating a wide pulse from a narrow pu Integrating circuit for separating a wide pulse from a narrow pu

1975-03-14

1976-09-07

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307234, 178 73S, G06G 712, H03K 520

Patent

active

039796051

ABSTRACT:
This invention relates to an integrating circuit especially suitable for use as a vertical synchronizing signal separation circuit in a television receiver set, which comprises a transistor, a parallel circuit of a resistor and a capacitor connected between the emitter of the transistor and the ground, a capacitor connected between the base and the emitter of the transistor, and a resistor connected between the base of the transistor and an input terminal. A composite synchronizing signal applied to the input terminal is fed to the base, and a vertical synchronizing signal can be derived either from the emitter or from the collector of the transistor. Owing to a positive feedback effect, the vertical synchronizing signal can be obtained as a sufficiently large signal even if the applied composite synchronizing signal is weak.

REFERENCES:
patent: 3219838 (1965-11-01), Hurst
patent: 3527888 (1970-09-01), Clapp et al.
patent: 3567966 (1971-03-01), Gilbert et al.
patent: 3801828 (1974-04-01), Lynn et al.

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