必须增加一个附加电压去克服这样引起的位垒。
An added voltage is necessary to overcome the barrier thus created.
在测量仪器上附加电流和电压源功能，为各种低电平测量应用提供了额外的灵活性。
Adding current and voltage sourcing capabilities to a measuring instrument provides an extra degree of versatility for many low level measurement applications.
而保护意味着使用保持在与高阻抗电路相同电位的附加的低阻抗导体来阻止可能的干扰电压或电流。
Guarding implies the use of an added low impedance conductor, maintained at the same potential as the high impedance circuit, which will intercept any interfering voltage or current.
注1：如果器具必须以不同的条件进行试验，则可能要求附加试样，例如器具能以不同的电压供电。
NOTE 1 Additional samples may be required if the appliance has to be tested under different conditions, for example if it can be supplied with different voltages.
每个主开关电压应力是输入电压的一半，并且全范围实现ZVS而不用附加任何电路。
ZVS is achieved for each main switch without any auxiliary circuit. Voltage stress of each main switch is a half of input voltage.
这种电流的降低是由安培计的内阻（RM）引起的，此内阻产生了一个附加的电压降，称为输入端压降（VB）。
This reduction is caused by the internal resistance (RM), which creates an additional voltage drop called the voltage burden (VB).
本文提出了一种逆变器数字多环控制技术，该方案在电流环和瞬时电压环之外附加了一个重复控制环。
This paper presents a digital multiple-loop control technology of inverters. The scheme incorporates a current loop with an instantaneous voltage loop, while a repetitive control outer loop is added.
通过采用推挽变压器和两个附加的二极管，该变换器可以实现零电压开关，并且有较高的可靠性。
By using two additional diodes and a push-pull transformer, this converter achieves not only ZVS of all active switches but also high reliability.
通过采用推挽变压器和两个附加的二极管，该变换器可以实现零电压开关，并且有较高的可靠性。
By using two additional diodes and a push-pull transformer, this converter achieves not only ZVS of all active switches but also high reliability.
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