| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an electronically controlling focus block which can be minimized, is easy for a measure against liquid leakage during resin molding, and can correspond to several CRTs. SOLUTION: An electronically controlling focus block includes a flyback transformer, a resistor for focusing to obtain a focus output from the secondary coil of the flyback transformer, and an electronically controlling focus circuit for controlling a voltage of the focus output. The resistor for focusing and a resistor using for the electronically controlling focus circuit are formed as a resistor pattern, and electronic parts 44 are assembled on a substrate 40. The substrate 40 on which the resistor pattern 42 is formed and the electronic parts are assembled is contained in a case 50, and the open side is fitted with a case for the flyback transformer. An opening part of the case 50 may not be formed and may be independent from the case for the flyback transformer.</p> |
