| 摘要 |
PURPOSE:To apply the specified voltage to the specified electrode with a simple method by making each voltage which is applied to at least three electrodes proportional to the space of an implanted section which is implanted on the resistors of these electrodes. CONSTITUTION:When the anode voltage is applied to a bulb spacer 20 through an anode terminal and a conductive film in an electron frame 11, it is applied to a convergence electrode 18 and the fourth grid 17 and to the second grid 15 through the implanted section 171 of this grid 17, resistor 19b, and the implanted section 151 of the second grid 15. The specified voltage is applied to this second grid 15 from an external power supply 24 through a lead wire 22 and a stem pin 23. In other words, the anode voltage of approximately 25KV which is applied to the fourth grid 17 is connected to the second grid 14 by the resistor 19b and the specified voltage is applied to the third grid 16 depending upon the resistance division ratio of the resistor 19b. |
