Power supply circuit, power supply device, and lighting device

The invention discloses a power supply circuit, a power supply device and a lighting device. An input voltage is detected through a control module, and when the input voltage is larger than a first preset voltage, the control module outputs a working signal to a power management module; and when the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI KANYUN, RUAN YUNLIAO, ZHOU MINGJIE, ZHANG HONGBO, YIN CHUAN, BAO LIJUN
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 ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention discloses a power supply circuit, a power supply device and a lighting device. An input voltage is detected through a control module, and when the input voltage is larger than a first preset voltage, the control module outputs a working signal to a power management module; and when the working signal is input, the power supply management module converts the input voltage into a power supply voltage of a second preset voltage value and outputs the power supply voltage to the power utilization load. Only when the input voltage is greater than the first preset voltage, the power management module converts the input voltage into the power supply voltage with the rated voltage value to supply power to the power utilization load, thereby ensuring that the input voltage meets the requirement for voltage input when the power management module outputs the power supply voltage with the rated voltage value. Therefore, the power supply voltage is ensured to meet the power utilization demand of the power uti