Abstract
The main relationships describing a steady-state operating mode of self-excited-generator transducers with a self-balanced thermistor bridge, in which the transduced capacitance is connected in parallel with the thermistor, are presented. The results of tests of the transducer at frequencies of 2 and 3 MHz show that its sensitivity (∼200 kHz/pF) may be several hundreds of times higher than the sensitivity of self-excited-generator transducers in which the transduced capacitance is included into the frequency-setting measuring LC circuit.
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Parusov, V.P., Sharuev, N.K. & Sharuev, V.N. Capacitance Transducers with a Thermistor Bridge in the Measurement Circuit that Are Based on Self-Excited Oscillators. Instruments and Experimental Techniques 46, 650–652 (2003). https://doi.org/10.1023/A:1026037604666
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DOI: https://doi.org/10.1023/A:1026037604666