Thermal noise thermometer

Details Thermal noise thermometer Thermal noise thermometer

1977-06-13

1978-07-11

Gill, James J.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73362AR, G01K 730

Patent

active

040994139

ABSTRACT:
A thermal noise thermometer operating on the principle that the temperature of a resistor is related to the magnitude of the thermal noise signal produced in the resistor. The thermoseter comprises a temperature-sensing resistor, a shot noise source, means for selectively applying shot noise signals from the shot noise source to the resistor, a DC amplifier for amplifying the DC signal produced in the resistor, an AC amplifier for amplifying the AC signal produced in the resistor, and means for calculating the temperature to be measured from the output signal of the AC amplifier produced when the shot noise signal is applied to the resistor, the output signal of the AC amplifier produced when no shot noise signal is applied to the resistor, and the output signal of the DC amplifier.

REFERENCES:
patent: 2884786 (1959-05-01), Burk et al.
patent: 3818761 (1974-06-01), Brixy et al.
patent: 3878723 (1975-04-01), Blalock et al.

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