Controller of pulse width modulation signal-driven device,...

Details Controller of pulse width modulation signal-driven device,... Controller of pulse width modulation signal-driven device,...

2007-07-17

2007-07-17

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S685000, C318S599000, C388S804000, C388S811000, C388S819000, C388S912000

Reexamination Certificate

active

11266168

ABSTRACT:
A controller of a pulse width modulation signal-driven device, includes: an instruction input of operating the pulse width modulation signal-driven device; a control section generating a control clock which operates the pulse width modulation signal-driven device; a frequency modulator frequency-modulating the control clock, to thereby give to the control clock a frequency variation in a predetermined frequency range; a frequency varier generating a modulation signal inputted to the frequency modulator; and a first switching member driving the switching element which flows a predetermined drive current to the pulse width modulation signal-driven device based on the frequency-modulated control clock. The frequency varier includes: a first signal generator setting a range of diffusing a switching noise in a frequency range, and a unit for shifting a frequency band of the switching noise by giving a predetermined offset voltage to an output voltage of the first signal generator.

REFERENCES:
patent: 3683254 (1972-08-01), Michel et al.
patent: 4494051 (1985-01-01), Bailey
patent: 6243635 (2001-06-01), Swan et al.
patent: 6812667 (2004-11-01), Yasohara et al.
patent: 2005/0140330 (2005-06-01), Throngnumchai
patent: 04109900 (1992-04-01), None
patent: 7-099795 (1995-04-01), None
patent: 07099795 (1995-04-01), None

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