Cooled, temperature controlled electrometer

Details Cooled, temperature controlled electrometer Cooled, temperature controlled electrometer

1991-05-08

1992-08-04

Gregory, Bernarr E.

Electricity: measuring and testing

A material property using electrostatic phenomenon

324 72, 324458, 250283, G01N 2760, G01R 3102

Patent

active

H00010952

ABSTRACT:
A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

REFERENCES:
patent: 2709753 (1955-05-01), Krasnow et al.
patent: 4370615 (1983-01-01), Whistler et al.
patent: 4883957 (1989-11-01), Kinge et al.

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