Power supply circuit and power supply equipment

The utility model provides a power supply circuit and power supply equipment, the power supply circuit comprises a voltage sampling circuit, a comparison circuit and a switching circuit, the voltage sampling circuit is used for being connected with a power supply and used for sampling the voltage ap...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG KAI, CHEN ZHIDU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	The utility model provides a power supply circuit and power supply equipment, the power supply circuit comprises a voltage sampling circuit, a comparison circuit and a switching circuit, the voltage sampling circuit is used for being connected with a power supply and used for sampling the voltage applied to a temperature sensing element by the power supply, and the sampled voltage changes along with the change of the resistance value of the temperature sensing element; the comparison circuit is connected with the voltage sampling circuit and is used for outputting a first level signal when the sampling voltage is greater than or equal to a preset reference voltage and outputting a second level signal when the sampling voltage is smaller than the preset reference voltage; the switching circuit is connected with the power supply, the heating device and the comparison circuit, the switching circuit is used for conducting a power supply loop of the power supply and the heating device when receiving the first leve