Safe; Low voltage dc 12V power supply , so it's very safe.

安全；采用低压直流12V供电电压，因此使用上非常安全。

youdao

High-voltage dc measurements usually involve a high-resistance voltage divider which usually forms a high resistance to the circuit being measured and thus draws infinitesimal current.

高压直流测量通常需要一个高阻抗的分压器，它对被测量的电路通常形成一个高电阻以便只有极小的电流被分流。

youdao

Some people, however, question that standard because over long distances high-voltage DC lines suffer lower losses than AC.

现在有人开始质疑这一标准的适用性，因为在远距离输电的情况下，采用高压直流(HVDC)要比高压交流损耗小。

youdao

High-voltage DC can carry power over long distances at lower cost than alternating current, but the transformers still cost too much to make the idea widespread.

FORBES: Magazine Article

It's high-voltage, high-current DC, which is not too far off of automotive electronics from a technology standpoint.

CNN: Transcript of June 'CNN Money Summit: Money & Main St.'

The technology also can sit in DC-to-DC devices, which are designed to adjust the voltage and minimize power losses.

FORBES: Google-backed Transphorm Raises $25M For Power Conversion Tech