A battery incorporating with a power electronics converter as a power module can provide the requiredvoltage levels for the different load applications.
电池配合电力电子转换器，可提供负载所需更精致的电源形式和电压电流准位。
2
Experimental result shows that the method makes the operating voltage of electric-light source maintained at the range requiredvoltage level of power saving.
实验证明，该方法使电光源的工作电压基本保持在所要求的节电等级的电压范围内。
3
All LED magnifiers provide a very even illumination of the field of view. The requiredvoltage of 3.6 volt is provided by two batteries (AA or a) via a step-up converter.