Schneider Electric is one of the world's largest manufacturers of medium - and low-voltage electronic equipment.

施耐德电气是世界中低电压电器设备的最大制造商之一。

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When the transistor switches, the change in voltage alters the electronic properties of the material and determines whether or not electrons can flow through it.

ECONOMIST: Babbage’s last laugh | The

Their job is to convert high-voltage alternating current from the mains into low-voltage direct current for mobile phones, laptops, iPods and other electronic gadgets.

ECONOMIST: How a boring gadget saved $2 billion-worth of electricity

Electronic chips consist of millions of transistors, each of which does one simple thing: it uses the voltage at one of its three junctions to decide whether or not to let current flow between the other two.

ECONOMIST: Babbage’s last laugh | The