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    PCRC-55

    Abstract: PCRC-11 EDN handbook zener LM329 lm389s LM389 electrochemical gas sensors datasheet relative humidity sensor circuit diagram 2N2222A AN-256
    Text: Of all common environmental parameters, humidity is perhaps the least understood and most difficult to measure. The most common electronic humidity detection methods, albeit highly accurate, are not obvious and tend to be expensive and complex See Box . Accurate humidity measurement is


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    PCRC-55

    Abstract: pcrc-11 1980 Audio Handbook "Humidity Sensor" electrochemical gas sensors datasheet 2N2222A AN-256 LF347 LF353 LM334
    Text: Although not as accurate as other methods, the sensor described by the response curve Figure 1 is inexpensive and provides a direct readout of relative humidity. The curve reveals a close exponential relationship between the sensor and relative humidity spanning almost 4 decades of resistance. Linearization of this curve may be accomplished by


    Original     		an008713 PCRC-55 pcrc-11 1980 Audio Handbook "Humidity Sensor" electrochemical gas sensors datasheet 2N2222A AN-256 LF347 LF353 LM334 PDF