| 摘要 |
PURPOSE:To prevent generation of secular charge of resisting value even if used in heavy electric field zone by arranging, in parallel, a first resistor and a second resistor which is in the vicinity of the first resistor and able to protect it from heavy electric field zone. CONSTITUTION:In a resisting material 100, resisting materials 55 are placed on a thin insulating substrate 54 made of ceramic etc. to form a first resistor 101. And the first resistor 101 is coated by insulating material 56 like glass, and resisting materials 55 are placed on the insulating material 56 to form a second resistor 102. The second resistor 102 is also coated by the insulating material 56 like glass. Thus, by placing the second resistor 102 in parallel with the first resistor 101 required to obtain split voltage, the second resistor 102 becomes to have almost the same potential distribution as that of the first resistor 101 to protect the first resistor 101 from heavy electric field zone. Then even if the resistor built-in a cathode-ray tube is used in heavy electric field zone, secular change of resisting value can be prevented. |
