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  • 匿名
关注：1 2013-05-23 12:21

求翻译：initially, as power is applied, the voltage applied to pin 2 of U1281A from the voltage divider formed by R1227 and R1228 is lower than the +10 V reference level applied to pin 3. The output of U1281A is forced high, reverse biasing the base-emitter junction of Q1222 and turning it com-pletely off. With Q1222 off, all 是什么意思？

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initially, as power is applied, the voltage applied to pin 2 of U1281A from the voltage divider formed by R1227 and R1228 is lower than the +10 V reference level applied to pin 3. The output of U1281A is forced high, reverse biasing the base-emitter junction of Q1222 and turning it com-pletely off. With Q1222 off, all
问题补充：
  • 匿名
2013-05-23 12:21:38
最初，通电，施加电压引脚从r1227和r1228形成分压器u1281a 2比+10 V参考适用于引脚3的水平较低。 u1281a输出被强制为高，q1222基地发射结反向偏置，并把它完全关闭。与q1222关闭，所有的电流通过r1212达林顿晶体管对q1221和q1220，SE-RIES通晶体管q1220最大电流流动的基极电流%E
  • 匿名
2013-05-23 12:23:18
  • 匿名
2013-05-23 12:24:58
  • 匿名
2013-05-23 12:26:38
  • 匿名
2013-05-23 12:28:18
 
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