Adapter Introduction

Adapter is an interface converter , which allows a hardware or electronic interface with other hardware or electronic connector. In the computer, the adapter may be built in the normally inserted in the card slot on the motherboard (also external) ... adaptation information exchange between the card processor and the adapter support devices.
  Power adapter is a small portable electronic devices and electrical and electronic power supply conversion device, typically by the housing, the power transformer and a rectifier circuit composed of, its output can be divided into AC output and DC output type type; connection can be divided by PLUG and desktop. Mobile PC because there is no battery, power adapter it is particularly important.
  Most mobile PC 's power adapter can automatically detect 100 ~ 240V AC (50 / 60Hz). Substantially all of the mobile PC regard the external power supply, and a host with a line, which can reduce the size and weight of the host, only a small number of models built in the power within the host.
  In the power adapter has a nameplate above marked power, input and output voltage and current and other indicators, with particular attention to the range of input voltage, which is the so-called "travel power adapter."

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Origin www.cnblogs.com/Eddie-Richard/p/11936690.html