Back to results
US 5,089,930 AGranted
Temperature compensated linear variable transformer
AssigneePickering Controls, Inc.
InventorJacob Chass
Life of this patent
Estimating the term…
Abstract
A differential transformer is provided comprising an elongated bobbin having primary and secondary coils wound about separated sections. A ferromagnetic armature is movably disposed within a core of the bobbin for movement between the separated sections. A tube of electrically conducting material surrounds the bobbin core. The tube is formed of a material whose resistance varies with temperature in the same manner as the primary coil.
Claims8
A transformer comprising:
- an elongated bobbin of a non-magnetic, nonconducting material, said bobbin having a hollow center core and at least one flange separating said bobbin into first and second longitudinal sections;
- a primary coil of electrically conducting wire disposed about said first section;
- a secondary coil of electrically conducting wire disposed about said second section;
- an armature of ferromagnetic material movably disposed within said core and extending at least partially into said first and second sections;
- and,
- a first tube within said core disposed about said armature, said first tube being formed of an electrically conducting material having resistance characteristics which vary with temperature in the same fashion as said primary coil.
3 more elements
Dependencies are inferred from the claim text.