Power control circuit

Details Power control circuit Power control circuit

1985-06-20

1986-12-02

Dixon, Harold

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Discharge control discharge device in the supply circuit

315194, 315199, 315226, 315287, 315DIG4, H05B 3700

Patent

active

046267468

ABSTRACT:
A power control circuit which receives an AC line signal input and includes operational amplifiers which receive the AC line signal after it has been rectified. Each operational amplifier respectively operates as a zero crossing circuit which produces a square synchronous pulsed signal, a ramp generator which receives the square synchronous pulsed signal and produces a sawtooth wave signal, a comparator which receives the sawtooth wave signal and produces a synchronous pulsed width modulated output signal which can be varied. A power bridge circuit receives the AC line signal input and is triggered by the pulsed width modulated signal to rectify the AC line input to pass a pulsed width modulated signal to the load. The signal passed to the load is varied by the setting of the comparator.

REFERENCES:
patent: 3147928 (1964-09-01), Carpenter
patent: 3317789 (1967-05-01), Nuckolls
patent: 3358186 (1967-12-01), Nomura
patent: 3514667 (1970-05-01), Dessoulavyet
patent: 4052648 (1977-10-01), Nola
patent: 4170747 (1979-10-01), Holmes
patent: 4379254 (1983-04-01), Hurban

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