Title:
【発明の名称】電圧比例引き写し装置
Document Type and Number:
Japanese Patent JP3009602
Kind Code:
B2
Abstract:
A voltage proportional replication device comprises an input electromagnet (10) responsive to an input voltage (V(IN)) for producing a magnetic field in proportion to the input voltage, and a first magnetoresistive sensing element (12) disposed within the field of the input electromagnet, an adjustable source (VCC.16) of output voltage (V(OUT)), an output electromagnet (11) responsive to the output voltage for producing a magnetic field in proportion to the output voltage, and a second magnetoresistive sensing element (13) disposed within the field of the output electromagnet. A control circuit (14) for controlling the adjustable output voltage maintains a constant ratio between the resistances of the first and second magnetoresistive elements, thereby maintaining a constant ratio between the input voltage and the output voltage.
Inventors:
Sango Jin
Ashraf Waggie Lotofi
Mark Thomas McCormack
Ashraf Waggie Lotofi
Mark Thomas McCormack
Application Number:
JP9752495A
Publication Date:
February 14, 2000
Filing Date:
March 31, 1995
Export Citation:
Assignee:
AT&T CORP.
International Classes:
G01R33/09; G01R15/20; G01R17/16; G01R19/00; G05F1/10; H01F10/18; (IPC1-7): H02M5/10; G01R15/20; G01R33/09; G05F1/10
Domestic Patent References:
| JP244261A |
Attorney, Agent or Firm:
Hirofumi Mitsumata