| 摘要 |
<p>PURPOSE: To easily position a Hall element for converting a magnetic field to a voltage at the magnetic gap of a magnetic core for generating the field according to a current supplied to a coil. CONSTITUTION: A small-sized board 29 fixed with a Hall element 27 is engaged fixedly within the magnetic gap 24 of a magnetic core 23, and the core 23 and the board 29 are fixed on an electric circuit board 25 in this state. The element 27 is disposed at a specified position in the gap 24 in the state that the board 29 is fixed to the core 23.</p> |
