| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress deterioration in output efficiency due to demagnetization by core loss by making a coil case itself of a conductive magnetic material and holding the coil case to the earth potential. SOLUTION: A coil case 1 itself is made of a conductive magnetic material having a high permeability such as silicon steel plate and is held to the earth potential. Specifically, an earth terminal 27 in a low voltage terminal socket 3 is in contact with the coil case 1 so as to be electrically connected, thereby holding the coil case 1 to the earth potential. Alternatively, a seal cover 24 fit into the outer side of the coil case 1 is made of a conductive rubber and the coil case 1 is held to the earth potential through a cylinder head of the engine.</p> |
