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US 2006/0214616 A1Published application
Heat dissipation devices
AssigneeDelta Electronics, Inc.
InventorsPo-Hui Shen, Cheng-Chieh Liu, Ching-Sen Hsieh, Yueh-Lung Huang
Life of this patent
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Abstract
A heat dissipation device comprises a fan motor, a drive circuit, and a reset current reduction circuit. When the fan motor is locked, an input terminal of the reset current reduction circuit receives an alarm signal, and an output terminal thereof outputs a voltage signal, which is larger than a reference voltage generated as the fan motor is at a low rotation rate, so as to decrease a reset current of the fan motor.
Claims16
A heat dissipation device, comprising:
- a fan motor;
- a drive circuit coupled to and driving the fan motor;
- and
- a reset current reduction circuit coupled to the drive circuit and having an input terminal and an output terminal;
- wherein, when the fan motor is locked, the input terminal of the reset current reduction circuit receives an alarm signal, and the output terminal outputs a voltage signal, which is greater than a reference voltage generated as the fan motor is at a low rotation rate, so as to decrease a reset current of the fan motor.
2 more elements
Dependencies are inferred from the claim text.