变压器的功用就是把电力从一种电压改变为加一种电压。 The function of the transformers is to change electric power from one voltage to another.
扩展器在某一给定范围的输入电压内产生较大输出电压的转换器 A transducer designed for a given range of input voltages that produces a larger range of output voltages.
就模拟输入而言,使模数转换器不能区别其变化的超范围的绝对电压值。超载值对于正输入和负输入可能不同。 For analog inputs, any absolute voltage value above which the analog-to- digital converter cannot distinguish a change. The overload value can be different for plus and minus inputs.