File:Helium Research Center internal report - an RC bridge and detector for the measurement of small capacitance changes (IA heliumresearchce00mcve 1).pdf

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Helium Research Center internal report : an RC bridge and detector for the measurement of small capacitance changes   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
McVey, James R
image of artwork listed in title parameter on this page
Title
Helium Research Center internal report : an RC bridge and detector for the measurement of small capacitance changes
Publisher
Amarillo, Tex. : U.S. Department of the Interior, Bureau of Mines, Branch of Laboratory Services
Amarillo, Tex. : U.S. Department of the Interior, Bureau of Mines, Branch of Laboratory Services
Description
17 leaves : 28 cm
An instrument for the purpose of detecting small changes in air dielectric capacitance is described. It consists of an RC bridge circuit with the associated power supply and detector. The bridge has a 26 VAC input and sine wave output which is compared with a square wave in the detector. The dc output from the detector is a measure of bridge unbalance in millivolts, with a minimum sensitivity of 10́℗đ pico-farads at 200 pico-farads. The bridge and detector assembly were designed to monitor the rate of diffusion of gases and were used successfully for this purpose. A small change in gas mixture composition changes the gas-dielectric constant; therefore, the capacitance value of a small air-type capacitor inserted into the gas mixture changes proportionally, and is recorded as a function of time
Includes bibliographical references (leaves 9-10)
"June 1964."
"Branch of Laboratory Services, Project 820.1."

Subjects: Helium; Capacitance meters -- Design and construction; Dielectric measurements; Helium; Capacitance meters -- Design and construction; Dielectric measurements
Language English
Publication date 1964
publication_date QS:P577,+1964-00-00T00:00:00Z/9
Current location
IA Collections: blmlibrary; fedlink; americana
Accession number
heliumresearchce00mcve_1
Notes No Copyright found.
Authority file  OCLC: 1157170284
Source
Internet Archive identifier: heliumresearchce00mcve_1
https://archive.org/download/heliumresearchce00mcve_1/heliumresearchce00mcve_1.pdf

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Public domain
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