Electronic apparatus that allows cooling fan to be driven...

Details Electronic apparatus that allows cooling fan to be driven... Electronic apparatus that allows cooling fan to be driven...

2007-07-17

2007-07-17

Ip, Paul (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Responsive to thermal conditions

C318S472000, C318S268000, C388S811000

Reexamination Certificate

active

10944901

ABSTRACT:
A voltage for driving a cooling fan is usually output from a fan voltage control circuit. Whether to cause the fan voltage control circuit to output the drive voltage or not is controlled by a system management utility (software) and a bridge controller (hardware) on the basis of temperature data from a temperature sensor. To provide for the occurrence of a failure in the system management utility or the bridge controller, a temperature comparator monitors the temperature data from the temperature sensor and instructs a fan voltage control circuit to output a drive voltage for the cooling fan in the case where the temperature rises above a given value.

REFERENCES:
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patent: 2007/0025707 (2007-02-01), Lin et al.
patent: 2001-56724 (2001-02-01), None

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