Design And Develop A Power Over Ethernet

Muhamad Saiful , Ibrahim (2008) Design And Develop A Power Over Ethernet. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Power over Ethernet (PoE) is an evolving technology that extends the already ultra-broad functionality of Ethernet by supplying reliable DC power over the same cables that currently carry Ethernet data. Power over Ethernet is convenient whenever there is an Ethernet cable available but plugging into a wall outlet is a hassle. Power over Ethernet technology is threatened by the fact that Ethernet cords are almost universally being phased out in favour of wireless networks. The entire desktop or laptop computer in the future may be powered with only an internet cable without attach it to the power cord supply; this is the Power over Ethernet future applications. Power over Ethernet is also ideal for older building with limitations on pre-existing electrical wiring. Power over Ethernet technology is facilitated by a simple adapter. The adaptor ''probes" a target first, to see if it can accept electrical power. After this is verified, power is sent through the cable concurrently with data. The proposed project is to design a compact, portable, low cost and reliable power over Ethernet DC adapter that capable producing stable DC source from +5 VDC to +12 VCD to any electrical devices that required DC supply i.e. headphone, VOIP, camera, sensor, buzzer etc. this enables replacement of conventional DC power supply adapter. For this project, it consists of three circuits design to perform data analysis for an adaptor designing. Those three circuits included with IC LM5070, voltage regulator and injector 48. Last but not least, to sustain the project development it should deal with the software and hardware parts.

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