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Electrical noise thermometer (1978)

Jones, B. K.

Springer

Applied physics 16 (1978), S. 99-102

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ISSN: 1432-0630

Keywords: 72.70

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Abstract A resistance in thermal equilibrium develops a noise voltage intensity which is directly proportional to the absolute temperature and is given by the well-established formula $$\overline {v_n^2 } = 4R kT\Delta f$$ . A novel circuit is described which uses a quasi-null technique to make the measurement less sensitive to many of the amplifier properties such as gain and bandwidth. The performance of a prototype circuit is given.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00931429

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