Device for measuring a quantity which influences a...

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356/189, 324/58

G01R 31/26 (2006.01) G01N 27/414 (2006.01) G01R 17/00 (2006.01) G01R 19/00 (2006.01) G01R 19/32 (2006.01)

Patent

CA 1123968

7-6-1979 1 PHN 9282 ABSTRACT: "Device for measuring a quantity which influences a field- effect transistor". Device for measuring a quantity which in- fluences a field-effect transistor which is included in a measuring circuit as a variable resistance. To compensate temperature-dependent changes of the field-effect transistor, an auxiliary signal, having a frequency located outside the frequency range of the quantity to be measured, is applied to the transistor. The two signals are separated from one another again after having been processed by the measuring circuit.

338932

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