Monday, 16 November 2015

How Esclators Work

Escalators are one of the largest, most expensive machines people use on a regular basis, but they're also one of the simplest.At its most basic level, an escalator is just a simple variation on the conveyer belt. A pair of rotating chain loops pull a series of stairs in a cons­tant cycle, moving a lot of people a short distance at a good speed.

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TRANSISTORS

TRANSISTORS A transistor is a semiconductor device that contains three regions separated by two distinct PN junctions. The two junctions are...

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