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:
- OSTI Identifier:
- 4296295
- Patent Number(s):
- 2859353
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06G - ANALOGUE COMPUTERS
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
- 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}
}
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