Linear inductive transducers

Details Linear inductive transducers Linear inductive transducers

G - Physics

01

P

340/135.7

G01P 13/00 (2006.01) F02D 41/40 (2006.01) F02M 59/44 (2006.01) G01D 5/22 (2006.01)

Patent

CA 1176344

ABSTRACT "LINEAR INDUCTIVE TRANSDUCER" A linear inductive transducer includes a non-magnetic former 10 which has a bore 11 in which is slidable a core 16 formed from magnetic material. The core in use is moved axially within the former by the component whose axial position it is required to sense. The former has three circumferential grooves 12, 13, 14 in which are located coils connected together to form the transducer winding the inductance of which varies with the axial position of the core. The widths of the coils and the number of turns in each coil varies so as to produce a substantially linear variation of inductance as the core is moved. A temperature responsive resistor 18 is mounted in close proximity to the winding and is connected in a resistance network which includes the winding. The inductance of the winding is checked by applying a step voltage to the resistance network and monitoring the change of current in a part of the network.

406957

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