| 摘要 |
<p>In a color picture tube apparatus, a deflection unit (27) is provided around a color picture tube (21) and a leakage magnetic (14) is generated from the deflection unit (27). A metal cover (32) made of aluminum, which covers an electrical power source is located in a space to which leakage magnetic field (14) is reached and a first opposition magnetic field is generated from the metal cover (32) due to the leakage magnetic field which produces an eddy current in the metal cover (32). A metal plate (34) made of a conductive and non-magnetic material is so located between the deflection unit (27) and the metal cover (32) as to be substantially perpendicular to the metal cover (32). Thus, a second opposition magnetic field is so generated from the metal plate (34) due to the leakage magnetic field as to substantially cancel the first opposition magnetic field.</p> |
