In a dc-dc converter with a given input voltage, the average output voltage is controlled by controlling the switch on and off durations (ton and toff).

在一个给定了输入电压的直流-直流变流器中，输出的平均电压是通过控制开关的导通和关断时间来控制的。

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You can power 4 outlets on and off using a convenient top-panel button, or connect a DC remote trigger to toggle the switched outlets automatically (cable provided).

您可以功率4点上下车方便使用前面板按钮，或连接远程触发直流切换开关插座自动(电缆提供)。

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This paper research a soft-switch DC pluse power supply. The turning on of main switch can achieve ZCS, and turning off is ZVS.

脉冲电源的形式和用途有多种，文章研究了一种软开关直流脉冲电源，主开关管可以实现零电流开通、零电压关断；

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Siegel and Shuster had an on-again, off-again relationship with DC, often suing over their rights, but ultimately returning to work for DC each time.

FORBES: Heirs of Superman Creators Wage Epic Battle With Warner Bros.