| 摘要 |
PURPOSE: A cooling apparatus for communication system is provided to reduce the production cost by adopting the analog signal processing. CONSTITUTION: The cooling apparatus for communication system comprises a temperature sensor(10) for detecting the temperature, an amplifier(AV) for amplifying the analog temperature signal to a predefined level, a differential amplifier(110) connected to the amplifier for amplifying the difference between the output of the amplifier and the reference value, a divider(115) connected to the reference terminal of the differential amplifier, a switch(120) for inputting the applied signal, and a field effect transistor(18) for turning on/off according to the switch output signal.
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