轮廓调制结合了一种相位调制信号的波形和放大器的输出阻抗，可在某个较大型输出电源关闭后保持更高的效率。

Contour modulation is a technique in which a phase-modulated signal waveform and amplifier output impedance work together to maintain higher efficiency over a sizable output power back-off.

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对测试中开关电源提供更低的源阻抗﹐因此它会传送更高的峰值电流。

Lower source impedance to the switching power supply under test, thus it can deliver higher peak current.

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这个反馈被连接到下游的三极管Q1，此电源电压的特性，对阻抗的变化很敏感。

This feedback being connected downstream Q1 transistor, the general behavior of this voltage supply is very sensitive to sensor impedance variation.

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