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.

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。

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Protecting against excessive input voltages using a pair of diodes to power supply reversibly biased in normal direction.

用一对二级管以反向偏执于正常方向的形式连接至电源端，来保护过高的输入电压。

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Its feature is that the input logical signal is converted to drive power by a special isolated converter, which makes a IGBT module turn on or off quickly, without any other biased voltage sources.

其特征是不要外接偏置电压源，而由一个特殊隔离变换器将输入逻辑信号变换为能快速开通或关断IGBT模块的驱动电力。

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In part he believes that the problem is economic institutions: regulatory barriers to entrepreneurship, a financial system that favours insiders, and a high level of input from labour, which tends to be biased towards the status quo.

ECONOMIST: Why can't Europe's economies catch up with America?