Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2005-11-22
2005-11-22
Choe, Henry (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
C330S251000
Reexamination Certificate
active
06967527
ABSTRACT:
An object of the present invention is to provide a pulse width modulation amplifier which is capable of suppressing an output distortion due to a power voltage regulation, without deteriorating efficiency. The pulse width modulation amplifier relating to the present invention includes,a first series circuit including a first switching element41connected to a positive pole side of a first direct-current power source Vcc1, and a second switching element42, one end of the load circuit being connected to a connecting point between the first switching element41and the second switching element42,a second series circuit including a third switching element51connected to a positive pole side of a second direct-current power source Vcc2, and a fourth switching element52, the other end of the load circuit being connected to a connecting point between the third switching element51and the fourth switching element52, anda driving circuit which turns on a set of the first switching element41and the fourth switching element52, and a set of the second switching element42and the third switching element51set-by-set, so that each of the sets is alternately put into on-state.
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Choe Henry
Denon Ltd.
Dickstein , Shapiro, Morin & Oshinsky, LLP
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