FAN CONTROL DEVICE AND FAN CONTROL METHOD
First Claim
Patent Images
1. A fan control device comprising:
- a signal generating circuit that generates an arbitrary signal controlling rotation of a fan for cooling a heat-generating component;
a switching circuit that is located between the heat-generating component and the fan, and switches output to the fan from the arbitrary signal generated by the signal generating circuit to a signal output by the heat-generating component; and
a switching instructing unit that issues a switching instruction to the switching circuit at predetermined timing.
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Abstract
A fan control device includes a PWM generating circuit, a PWM switching circuit, and a switching instructing unit. The PWM generating circuit generates an arbitrary signal controlling rotation of a fan for cooling an MXM card. The PWM switching circuit is located between the MXM card and the fan, and switches output to the fan from the arbitrary signal generated by the PWM generating circuit to a signal output from the MXM card. The switching instructing unit issues a switching instruction to the PWM switching circuit at predetermined timing. Consequently, the fan control device can appropriately control the fan for cooling a heat-generating component.
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Citations
6 Claims
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1. A fan control device comprising:
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a signal generating circuit that generates an arbitrary signal controlling rotation of a fan for cooling a heat-generating component; a switching circuit that is located between the heat-generating component and the fan, and switches output to the fan from the arbitrary signal generated by the signal generating circuit to a signal output by the heat-generating component; and a switching instructing unit that issues a switching instruction to the switching circuit at predetermined timing. - View Dependent Claims (2, 3, 4, 5)
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6. A fan control method for controlling rotation of a fan for cooling a heat-generating component, the fan control method comprising:
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inputting a signal output by the heat-generating component and an arbitrary signal controlling rotation of the fan to a switching circuit that switches output to the fan; and switching output to the fan from the arbitrary signal to the signal output by the heat-generating component when the switching circuit has received a switching instruction at predetermined timing.
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Specification