| 摘要 |
A fan control circuit includes a first switch element, a second switch element, and a fan connector. A first control terminal of the first switch element is connected to a fan control terminal to receive a pulse width modulation signal. A first terminal of the first switch element is connected to a first voltage source. A second control terminal of the second switch element is connected to the first terminal of the first switch element. A fourth terminal of the second switch is connected to a second voltage source via a NTC resistor. A first pin of the fan connector is connected to ground. A second pin of the fan connector is connected to a third terminal of the second switch element. A third pin of the fan connector is connected to a signal receiving terminal. The third pin is configured to receive a feedback signal indicating a rotating speeding of the fan.
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