FAN CONTROL CIRCUIT

A fan control circuit for controlling at least one fan of a power supply device includes a load sensing unit, a temperature sensing unit, a control unit connected to the load sensing unit, the temperature sensing unit and the fan, and a mode switching unit. The load sensing unit generates a load sig...

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Bibliographische Detailangaben
1. Verfasser:	WU, WEIN
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS PRINTED CIRCUITS REGULATING
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Beschreibung
Zusammenfassung:	A fan control circuit for controlling at least one fan of a power supply device includes a load sensing unit, a temperature sensing unit, a control unit connected to the load sensing unit, the temperature sensing unit and the fan, and a mode switching unit. The load sensing unit generates a load signal according to an output condition of the power supply device. The temperature sensing unit senses the temperature in the power supply device and generates a temperature signal. The control unit comprises a low-speed operating mode for controlling the fan according to the load signal, a mute mode for controlling the fan according to the temperature signal, and a full-speed operating mode for controlling the fan to run in a rated rotational speed. The mode switching unit controls the control unit to adjust the rotational speed of the fan by one of the three modes.