Diode load driving power supply device

A diode load driving power supply device capable of suppressing fluctuations during diode load startup, such as overshoots, is provided. A main rectification smoothing circuit is connected to one end of a secondary coil (ns) of a transformer (T), and a plurality of rectification smoothing circuits a...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUMOTO HIRONORI, ASAI HIROTSUGU
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 BASIC ELECTRIC ELEMENTS CONTROL OR REGULATION THEREOF CONTROLLING CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION PHYSICS REGULATING SEMICONDUCTOR DEVICES SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	A diode load driving power supply device capable of suppressing fluctuations during diode load startup, such as overshoots, is provided. A main rectification smoothing circuit is connected to one end of a secondary coil (ns) of a transformer (T), and a plurality of rectification smoothing circuits are connected to a plurality of intermediate taps of the secondary coil. Each of the rectification smoothing circuits is provided with a switch element (Q21, Q22, Q23). In the preliminary driving period, a DSP (30) for performing switching control on the switch elements (Q21, Q22, Q23) reads the forward drop voltage of the first diode load (11), the second diode load (12), and the third diode load (13), and sets a feedback gain corresponding to the forward drop voltage (VF). The DSP (30) performs switching control on the switch elements (Q21, Q22, Q23) on the basis of the set feedback gain, and commences rated driving.