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    Nov
    11,2022

    NTC thermosensitive material

    NTC thermosensitive material

        Thermal sensitive materials can generally be divided into three categories: semiconductor, metal and alloy, which are briefly described as follows.  Semicon...

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    Nov
    10,2022

    NTC negative thermistor composition

    NTC negative thermistor composition

        NTC (Negative Temperature Coefficient) refers to the thermistor phenomenon and material with negative temperature coefficient, whose resistance decreases ex...

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    Nov
    10,2022

    NTC performance is life

    NTC performance is life

        Long life NTC thermistor is an improvement of understanding of NTC thermistor, emphasizing the importance of resistance life. The most important thing of NT...

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    Nov
    09,2022

    Application of Fresnel Lens in Passive Infrared Detection

    Application of Fresnel Lens in Passive Infrared Detection

        The role of Fresnel lens in the whole passive infrared detector is that when someone enters the detection range, the Fresnel lens will focus the infrared li...

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    Nov
    09,2022

    Introduction to Fresnel lens

    Introduction to Fresnel lens

        It was first used in navigation lighthouse in 1800, and has been used since then. Now, polyethylene plastic injection molding process is mostly used. Fresne...

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