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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>MEASURING AND MINIMIZING DIODE DETECTOR NONLINEARITY</title>
      <link>https://trid.trb.org/View/63651</link>
      <description><![CDATA[The paper describes a technique for measuring the linearity of amplitude detectors in general, and for measuring the deviation from square-law, E, of point-contact diode detectors in particular. A general mathematical model is given for determining the rf input power as a function of the detector output voltage. For point-contact diodes it is shown how to choose the video load resistance to minimize E, as well as how to calculate and correct for E.]]></description>
      <pubDate>Fri, 15 Mar 2002 00:00:00 GMT</pubDate>
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      <title>MEASUREMENT OF SULFUR DIOXIDE IN AUTOMOBILE EXHAUSTS AND INDUSTRIAL STACK GASES WITH A COATED PIEZOELECTRIC CRYSTAL DETECTOR</title>
      <link>https://trid.trb.org/View/63621</link>
      <description><![CDATA[A portable instrument operating on a car battery and based on a quadrol-coated piezoelectric crystal detector has been successfully used for monitoring sulfur dioxide in auto exhausts and refinery stack gases. The concentrations of sulfur dioxide in the auto exhausts lie in the range 20-50 p.p.m. Up to 300 p.p.m. of sulfur dioxide occurs in the refinery stack gases. (Author)]]></description>
      <pubDate>Wed, 16 Feb 1977 00:00:00 GMT</pubDate>
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