Electricity: power supply or regulation systems – Including an impedance – Hall effect device or magnetoresistor
Patent
1994-03-31
1996-04-30
Wong, Peter S.
Electricity: power supply or regulation systems
Including an impedance
Hall effect device or magnetoresistor
323362, G01V 306
Patent
active
055128181
ABSTRACT:
In accordance with the present invention, a voltage proportional replication device comprises an input electromagnet responsive to an input voltage for producing a magnetic field in proportion to the input voltage; and a first magnetoresistive sensing element disposed within the field of the input electromagnet. The device further includes an adjustable source of output voltage; an output electromagnet responsive to the output voltage for producing a magnetic field in proportion to the output voltage; and a second magnetoresistive sensing element disposed within the field of the output electromagnet. A control circuit 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.
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Jin Sung-ho
Lotfi Ashraf W.
McCormack Mark T.
AT&T Corp.
Books Glen E.
Riley Shawn
Wong Peter S.
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