当外界有正向电压偏置时,外界电场和自建电场的互相抑消作用使载流子的扩散电流增加引起了正向电流。在电子电路中,将二极管的正极接在高电位端,负极接在低电位端,二极管就会导通,这种连接方式,称为正向偏置。
在正常工作中,发射结正向偏置,基集电结反向偏置。
In typical operation, the emitter-base junction is forward biased and the base-collector junction is reverse biased.
所述第二二极管单元经配置以在所述设备的正常操作期间不呈现正向偏置。
The second diode unit is configured to present no forward bias during normal operation of the apparatus.
MOSFET的输入二极管是由一个电场控制在门区,因此总是输入阻抗非常高,因为没有正向偏置二极管,以降低输入阻抗。
The MOSFET input diode is controlled by an electric field in the gate region, thus the input impedance is always extremely high because there is no forward biased diode to lower the input impedance.
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