Patent ID: 8179126
Filing Date: 2012-05-15
Classification: G01D

Abstract:
1. A Hall rotary transformer comprises a rotary transformer stator ( 1 ), linear Hall components ( 3 ), a PCB ( 4 ) and a permanent magnet magnetic ring ( 5 ), a ring shape soft iron core ( 2 ) is installed on the PCB ( 4 ), plural grooves ( 8 ) are uniformly distributed inside the peripheral surface of the ring shape soft iron core ( 2 ) and have the same number as the linear Hall components ( 3 ), every linear Hall component ( 3 ) is installed in its corresponding groove ( 8 ) and soldered on the PCB ( 4 ), the magnetic sensitive surface ( 31 ) of each linear Hall component ( 3 ) is aligned with the magnetic pole surface ( 51 ) of the permanent magnet magnetic ring ( 5 ) each other.