Conclusions
A study of the properties of field-effect transistors and their application in circuits shows that the quality of electrometric amplifiers with such transistors approaches that of amplifiers with electrometric tubes and capacitive choppers, and in certain instances exceeds it. At the same time this new type of electrometric amplifiers has the following advantages as compared with existing types: it is relatively simple and stable over a wide temperature range, it has a low noise level, low power consumption, a small size and it is suitable for microminiaturization, and a reduction of time required to prepare for operation after switching in. The above properties indicate the advisability of using various types of field-effect transducers in electrometric devices.
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Kiemin, L.V. Application of field-effect transistors for measuring very small direct currents. Meas Tech 9, 592–596 (1966). https://doi.org/10.1007/BF00975206
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DOI: https://doi.org/10.1007/BF00975206