The paper introduces the basic scheme of power supply system, and compares the safety of every scheme for reference in the design and application of power supply system.

介绍了电源系统的基本方案，并对各个方案的安全性做了对比，供设计和实际应用参考。

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Unfortunately, we soon realized a flaw in the control scheme for golf, in that there was no frame of reference or feedback for our motions.

ENGADGET: Hands on with Nintendo's Wii controller