Volume adjusting device of buzzer and household appliance

The utility model discloses a volume adjusting device of a buzzer and a household electrical appliance. The volume adjusting device comprises an inductor, a first capacitor, a fly-wheel diode, a first switching circuit, a second switching circuit and a control unit. The first end of the first switch...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YAN JUNWANG, ZHANG SHANFANG, FAN JINZHI, HAN JINGBO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:	The utility model discloses a volume adjusting device of a buzzer and a household electrical appliance. The volume adjusting device comprises an inductor, a first capacitor, a fly-wheel diode, a first switching circuit, a second switching circuit and a control unit. The first end of the first switch circuit is connected with the first end of the buzzer, and the second end of the first switch circuit is grounded; the first end of the second switch circuit is connected with the power supply end, the second end of the second switch circuit is connected with the first end of the inductor, the second end of the inductor is connected with the second end of the buzzer, the first end of the first capacitor is connected with the second end of the inductor, and the first end of the fly-wheel diode is connected with the first end of the inductor. The second end of the first capacitor and the second end of the fly-wheel diode are grounded; and the control unit is used for controlling the on-off of the first switching cir