| http://www.w3.org/ns/prov#value | - A rectifier, such as diode 213, rectifies the modulated radio frequency interrogator carrier and a smoothing capacitor 214 provides carrier filtering or smoothing action. lIt is, of couse, necessary to select the impedance of capacitor 214 so that only the interrogator carrier is smoothed and so that none of the audio interrogator Inodulating signals are appreciably attenuated.
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