| 摘要 |
<p>PURPOSE:To achieve a smaller size and higher accuracy by subtracting a second magnetic flux of a secondary winding from a first magnetic flux of a primary winding to reduce a necessary magnetic flux concerning a Hall element ammeter. CONSTITUTION:In the Hall element ammeter, a voltage value VO is fed back to a secondary winding 10 of a magnetic core 1 after the amplification of an output voltage value VH from a Hall element 4 to make a magnetic flux PHIH on the Hall element 4 smaller than ever significantly, thereby, achieving a achieving a smaller size of a magnetic circuit and higher accuracy.</p> |
