Title:
小型水中電磁測定システム
Document Type and Number:
Japanese Patent JP2010512538
Kind Code:
A
Abstract:
A system for measuring very low electrical potentials in a medium comprises an electrode (550) having a low electrical impedance to the medium, a connecting element (552,553) made of a conducting material attached to the electrode (550), and an amplifier (520) including a low noise preamplifier attached to the connecting element (553). The amplifier (520) contains an input bias circuit that minimizes the current drawn from the electrode (550) through the amplifier inputs in order to minimize electrochemical reactions at the electrode (550).
Inventors:
Hibbs, Andrew Dee
Nielsen, Thomas Kurt
Nielsen, Thomas Kurt
Application Number:
JP2009541329A
Publication Date:
April 22, 2010
Filing Date:
December 11, 2007
Export Citation:
Assignee:
Quasar Federal Systems Incorporated
International Classes:
G01R29/08; G01V3/08; G01V3/40
Attorney, Agent or Firm:
Shinjiro Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tatsumi Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tatsumi Ono