| 摘要 |
<p>PURPOSE:To suppress voltage increase applied to a capacitor minimally even when one resistance element is broken and to improve the safty of a power source circuit and further to eliminate a large capacitor and to miniaturize and lighten the power source circuit by replacing each resistance element consisting of a voltage divider circuit with plural parallelly connected resistance elements respectively. CONSTITUTION:The voltage divider circuit 11 consists of ten pieces of resistance elements r11, r12, r21, r22, R3, r41, r42, r51, r52 and the r11, r12, r21, r22, r41, r42, r51, r52 have the resistance value of 2R and the R3 has the resistance of (n-4)R. The r11 and r12, r21 and r22. r41 and r42, r51 and r52 are parallelly connected and they are made the resistors R1, R2, R4, R5 and they have the same resistance value R and the resistance element R3 has the resistance value (n-4)R. Thus, when any one of these resistance elements is broken or disconnected, too high voltage is not applied to the capacitors C1-C4.</p> |
