This lack of static, DC offset current in the output transformer means that the core can be made smaller, because it requires no air gap to prevent core saturation from the static DC offset current.
这种缺乏静态，直流偏移电流输出变压器的核心手段，可更小，因为它不需要空气间隙，以防止核心饱和从静态直流偏移电流。
The air-gap constant was defined, which was used in the analysis of current transformer to display the influence of the air gap on the performance of current transformer.
定义了气隙常数，应用它，可较全面且直观地展示铁心上开气隙对电流互感器性能的影响。
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