Wide work voltage range, strong ability in adapting power grid.

工作电压范围宽，电网适应能力强。

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PN junction is the foundation of almost all the power devices. The avalanche breakdown voltage of PN junction determines the work voltage range of related power devices.

PN结构成了几乎所有半导体功率器件的基础，其雪崩击穿电压直接决定了相关器件的工作电压范围。

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One problem is that typical power meters work by measuring the voltage output and converting that to charge remaining.

WSJ: Some Percentages Are Just Fair-Weather Friends

In addition to sharing Lawrence's scientific interests, Loomis, because of his investment work with utilities, appreciated the need to create an efficient high-voltage transformer.

FORBES: The Alchemist