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开关
在有些情况下,切换晶体管可以作为一种电开关,晶体管可以打开或关闭一个电路,就像用点接触的晶体管和两个灯,用左边的部分可以开右边的灯。
晶体管和机械开关的差异在于晶体管不用包括任何可以移动的部件,因此也不是那么容易变化。晶体管可以被电流控制而不是被一个机械力控制,如推手指,这使晶体管的切换和关闭速度远远大于一个机械开关。
译者:哈尔滨工业大学(威海)电子封装 090840229-朱泯西
校对:哈尔滨工业大学(威海)电子封装 090840217-李新亮
英文原文:http://www.nobelprize.org/educational/physics/transistor/function/switching.html
Switching
In the case of switching the transistor is used as an electronic switch. The transistor can turn an electrical circuit on or off, just as in the case with the point contact transistor and the two lamps. With the left part you could turn on the right lamp.
The difference between a transistor and a mechanical switch is that the transistor doesn't contain any moving parts and therefore doesn't break quite as easily. The transistor is also operated by an electrical current and not by a mechanical force, such as the pushing of a finger. This enables the transistor to switch between on/off much faster than a mechanical one.
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