SWITCHING POWER SUPPLY

PROBLEM TO BE SOLVED: To achieve a self-exciting and flyback (RCC system) switching power supply having a reduced wiring space and a function for inexpensively inhibiting a decrease in an oscillation frequency during a large load. SOLUTION: The switching power supply comprises a closed loop from one...

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Hauptverfasser:	KITANO SABURO, KITANO YOKO, KITANO FUMIKO
Format:	Patent
Sprache:	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:	PROBLEM TO BE SOLVED: To achieve a self-exciting and flyback (RCC system) switching power supply having a reduced wiring space and a function for inexpensively inhibiting a decrease in an oscillation frequency during a large load. SOLUTION: The switching power supply comprises a closed loop from one end of a bias wiring wound onto a transformer to the other end of the bias winding through a current limiting resistor, a DC blocking capacitor and a control terminal and a negative pole terminal of a main switching element, and a switch circuit provided between the other end of the bias winding and a connection between the current limiting resistor and the DC blocking capacitor of a return signal transmitting circuit for transmitting an output from the bias winding to the control terminal of the main switching element. The main switching element is compulsorily turned on by the switch circuit after a predetermined time since the main switching element is turned off. COPYRIGHT: (C)2006,JPO&NCIPI