Switching amplification apparatus

Details Switching amplification apparatus Switching amplification apparatus

H - Electricity

03

F

H03F 3/217 (2006.01)

Patent

CA 2431297

To provide a new switching amplifier in which power supply switching noise is reduced to improve the quality. The switching amplifier is provided with a power amplifier (1) that has a modulator which modulates an analog signal or a multi bit digital signal into a two-level signal, and supplies an output pulse signal from this modulator to a power switching element (3); and a .DELTA..SIGMA. power supply (5) which is provided with a .DELTA..SIGMA. modulating device, and the construction is such that the output pulse signal from the modulator of the power amplifier (1) is supplied to the .DELTA..SIGMA. power supply (5), and also the construction is such that the .DELTA..SIGMA. power supply (5) receives the pulse signal as an operating clock, .DELTA..SIGMA. modulates the received pulse signal, and supplies the .DELTA..SIGMA. modulated pulse signal to the power switching element (3).

La présente invention concerne un appareil d'amplification de commutation pouvant réduire le bruit de commutation d'une source d'énergie, améliorant ainsi la qualité. L'appareil d'amplification de commutation comporte un modulateur pour la modulation d'un signal analogique ou d'un signal numérique à bits multiples en un signal binaire, un amplificateur de puissance (1) pour la fourniture d'un signal d'impulsions en sortie depuis ledit modulateur vers un élément de commutation de puissance (3) et une source d'énergie DELTA SIGMA (5) comprenant des moyens de modulation DELTA SIGMA , de sorte que le signal d'impulsions du modulateur de l'amplificateur de puissance (1) soit fourni à la source d'énergie DELTA SIGMA (5) et le signal d'impulsions soit fourni en entrée à la source d'énergie DELTA SIGMA (5) en tant qu'opération d'horloge de la source d'énergie DELTA SIGMA (5), soumis à la modulation DELTA SIGMA , et fourni à l'élément de commutation de puissance (3).

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