CIRCUITS FOR CURRENT MEASUREMENTS

Patent · Sat Nov 01 00:00:00 EST 1958

OSTI ID:4296295

Cox, R J

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.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-008393
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 2859353
• OSTI ID: 4296295
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: United States
• Language: English

Related Subjects

PATENTS
AMPLIFIERS
ANODES
CATHODES
CIRCUITS
CURRENTS
ELECTRIC POTENTIAL
ELECTRODES
ELECTRON TUBES
FEEDBACK
GRIDS
IMPEDANCE
IONIZATION
IONIZATION CHAMBERS
MEASURED VALUES
RESISTORS
STABILITY
VACUUM