VENTILATION FAN

PROBLEM TO BE SOLVED: To provide a ventilation fan in which a ventilation fan motor is not operated under a state where supply voltage to the ventilation fan motor is lowered. SOLUTION: The ventilation fan comprises a section 8 for controlling the operation of a ventilation fan motor 9, and a power...

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Bibliographische Detailangaben
1. Verfasser:	KAWASAKI MASAHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING HEATING LIGHTING MECHANICAL ENGINEERING RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a ventilation fan in which a ventilation fan motor is not operated under a state where supply voltage to the ventilation fan motor is lowered. SOLUTION: The ventilation fan comprises a section 8 for controlling the operation of a ventilation fan motor 9, and a power supply circuit 10 comprising a circuit 13 for bypassing a current limit circuit 12 connected in series with a capacitor input section 11 connected with a power supply by an input signal from the control section 8 and a circuit 14 for detecting correct function of the bypass circuit 13. According to the arrangement, a ventilation fan which can not be operated under a state where supply voltage to the ventilation fan motor 9 is lowered can be obtained.