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Title:
ELECTRONIC BALANCE
Document Type and Number:
Japanese Patent JP3104380
Kind Code:
B2
Abstract:

PURPOSE: To improve the resolution without raising costs in an electronic balance of a model which supplies a pulse current to a force coil and determines the pulse duty through a predetermined automatic control operation such as a PID operation or the like.
CONSTITUTION: A pulse current of the duty of a smaller number of bits (resolution) than the display resolution of this balance fed to a false coil. Moreover, the pulse duty is changed forcibly with a predetermined ratio in a predetermined period. Accordingly, the resolution is improved in a pseudo fashion.


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Inventors:
Akira Kawamoto
Application Number:
JP6731092A
Publication Date:
October 30, 2000
Filing Date:
March 25, 1992
Export Citation:
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Assignee:
SHIMADZU CORPORATION
International Classes:
G01G7/04; G01G23/37; (IPC1-7): G01G7/04; G01G23/37
Domestic Patent References:
JP363526A
JP63241428A
JP61244129A
JP2288190A
Attorney, Agent or Firm:
Yoshiro Kurauchi