Power supply device and sound equipment using same

The invention relates to the field of power supplies, in particular to a power supply device and sound equipment adopting the power supply device. The power supply device comprises an AC-DC isolation type switch power supply module, a low-pass filtering module, a linear power supply module and a sup...

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Bibliographische Detailangaben
Hauptverfasser:	SONG JIURU, SONG XUESONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention relates to the field of power supplies, in particular to a power supply device and sound equipment adopting the power supply device. The power supply device comprises an AC-DC isolation type switch power supply module, a low-pass filtering module, a linear power supply module and a supplementary power supply module, the input end of the AC-DC isolation type switch power supply module is connected with an external input power supply, and the output end of the AC-DC isolation type switch power supply module is connected with the input end of the low-pass filtering module. The output end of the low-pass filtering module is connected with the input end of the linear power supply module, and the output end of the supplementary power supply module is connected with the output end of the linear power supply module. According to the invention, the output end of the switching power supply is connected with the input end of the linear power supply module. Therefore, the switching power supply not only has