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Title: CIRCUITS FOR CURRENT MEASUREMENTS

Abstract

Circuits are presented for measurement of a logarithmic scale of current flowing in a high impedance. In one form of the invention the disclosed circuit is in combination with an ionization chamber to measure lonization current. The particular circuit arrangement lncludes a vacuum tube having at least one grid, an ionization chamber connected in series with a high voltage source and the grid of the vacuum tube, and a d-c amplifier feedback circuit. As the ionization chamber current passes between the grid and cathode of the tube, the feedback circuit acts to stabilize the anode current, and the feedback voltage is a measure of the logaritbm of the ionization current.

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4296295
Patent Number(s):
2859353
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-008393
NSA Number:
NSA-13-008393
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
PATENTS; AMPLIFIERS; ANODES; CATHODES; CIRCUITS; CURRENTS; ELECTRIC POTENTIAL; ELECTRODES; ELECTRON TUBES; FEEDBACK; GRIDS; IMPEDANCE; IONIZATION; IONIZATION CHAMBERS; MEASURED VALUES; RESISTORS; STABILITY; VACUUM

Citation Formats

Cox, R.J. CIRCUITS FOR CURRENT MEASUREMENTS. United States: N. p., 1958. Web.
Cox, R.J. CIRCUITS FOR CURRENT MEASUREMENTS. United States.
Cox, R.J. Sat . "CIRCUITS FOR CURRENT MEASUREMENTS". United States.
@article{osti_4296295,
title = {CIRCUITS FOR CURRENT MEASUREMENTS},
author = {Cox, R.J.},
abstractNote = {Circuits are presented for measurement of a logarithmic scale of current flowing in a high impedance. In one form of the invention the disclosed circuit is in combination with an ionization chamber to measure lonization current. The particular circuit arrangement lncludes a vacuum tube having at least one grid, an ionization chamber connected in series with a high voltage source and the grid of the vacuum tube, and a d-c amplifier feedback circuit. As the ionization chamber current passes between the grid and cathode of the tube, the feedback circuit acts to stabilize the anode current, and the feedback voltage is a measure of the logaritbm of the ionization current.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {11}
}