| 摘要 |
PROBLEM TO BE SOLVED: To provide a combined type temperature control circuit of a heat radiation fan for increasing a change range of rotating speed of the fan by increasing a voltage fluctuation rate caused by a change of temperature. SOLUTION: The combined type temperature control circuit of the heat radiation fan is provided with a first resistor array 21 constituted so as to connect a resistor and a temperature sensor element in series; and a second resistor array 22 constituted so as to connect a resistor and a temperature sensor element in series, and thereafter connected to the temperature sensor element of the first resistor array 21 in parallel. The temperature sensor element of the first resistor array 21 is connected to the second resistor array 22 in parallel, and thereafter connected to the resistor of the first resistor array 21 in series. The voltage fluctuation rate caused by temperature change is increased, and the change range of the rotating speed of the fan is increased by the same temperature change. COPYRIGHT: (C)2006,JPO&NCIPI
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