Measurement Techniques

, Volume 5, Issue 4, pp 297–299 | Cite as

Highly sensitive transducers for measuring small alternating currents

  • A. M. Teplinskii
Electrical Measurements


The above indirectly heated detectors have the highest known sensitivity among thermistor and thermocouple detectors, and provide accurate measurements of small ac currents down to 20μa over a wide frequency range without the use of galvanometric amplifiers, thus greatly simplifying comparator circuits. The use of galvanometric amplifiers in a comparator circuit [5] provides measurements down to 6–8μa.


Physical Chemistry Analytical Chemistry Wide Frequency Range Comparator Circuit Sensitive Transducer 
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Literature cited

  1. 1.
    K. P. Shirokov, Comprehensive Equipment for Testing Ammeters and Voltmeters at Higher Frequencies. Trudy VNIIM, 1954, No. 24 (84).Google Scholar
  2. 2.
    F. L. Hermach, E. S. Williams, Journal of Research of NBS, 1954, 52, 227.Google Scholar
  3. 3.
    H. J. Schrader, Elektrotechnische Zeitschrift, 1953, B. 73., Heft 17.Google Scholar
  4. 4.
    F. S. Widdis, The Proceedings of the Institute of Electrical Engineers, 1956, November, v. 103, No. 12.Google Scholar
  5. 5.
    T. B. Rozhdestvenskaya, A. M. Teplinskii, Izmeritel'naya tekhnika, 1960, No. 11.Google Scholar

Copyright information

© Instrument Society of America 1962

Authors and Affiliations

  • A. M. Teplinskii

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