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

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: ZHANG KAI, CHEN ZHIDU
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
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