SWITCHING MODE POWER SUPPLY

The present invention provides a switching mode power supply including a primary circuit unit comprising an input circuit proving an input voltage and a semiconductor switch conducting or cutting off the input circuit, a transformer comprising a primary winding connected to the primary circuit unit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YANG, Chun Suk, LIM, Deok Young
Format:	Patent
Sprache:	eng ; fre ; ger
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 EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION
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Beschreibung
Zusammenfassung:	The present invention provides a switching mode power supply including a primary circuit unit comprising an input circuit proving an input voltage and a semiconductor switch conducting or cutting off the input circuit, a transformer comprising a primary winding connected to the primary circuit unit and a plurality of secondary windings magnetically connected to the primary winding, a plurality of secondary circuit units respectively connected to the plurality of secondary windings and supplying a plurality of output voltages, a feedback circuit unit receiving one of the plurality of output voltages as feedback and calculating a compensation voltage for constantly controlling the output voltages, a control unit controlling on/off an duty ratio of the semiconductor switch according to the compensation voltage, and a protection circuit unit receiving one of the plurality of output voltages to determine whether the feedback circuit unit fails and to cut off, when the feedback circuit fails, power of the control unit.