Simple and compatible POE power supply device

A power supply device, simple technology, applied in the direction of data switching current source, data exchange details, etc., can solve the problems of incompatibility and low cost

Pending Publication Date: 2017-06-23
XIAMEN YEALINK NETWORK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent only uses resistors for identification, and the cost

Method used

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  • Simple and compatible POE power supply device
  • Simple and compatible POE power supply device
  • Simple and compatible POE power supply device

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Embodiment Construction

[0017] A simple and compatible POE power supply device of the present invention, such as figure 1 , figure 2 and image 3 As shown, it includes a power supply end circuit and a power receiving end circuit, and the power supply end circuit and the power receiving end circuit are connected through a network transformer and a pair of network cables.

[0018] The power supply circuit includes a first detection circuit 1 , a power supply circuit 2 , a logic circuit 3 and a second detection circuit 4 ; wherein the logic circuit 3 includes a logic OR circuit 31 . The input end of the power supply circuit 2 is connected to the power supply input end through the current sampling resistor R4 of the second detection circuit 4, and the output end of the power supply circuit 2 is respectively connected to the sampling input end of the first detection circuit 1 and the center tap input end of the network transformer , the output end of the first detection circuit 1 and the output end of ...

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Abstract

The invention discloses a simple and compatible POE power supply device, which comprises a power-supply-end circuit and a power-receiving-end circuit. The power-supply-end circuit and the power-receiving-end circuit are connected through a network transformer and a network cable. The power-supply-end circuit comprises a first detection circuit, a power supply circuit, a logic circuit and a second detection circuit. The power-receiving-end circuit comprises a rectifier circuit, a detection resistor and a switch circuit. The circuit of the simple and compatible POE power supply device is composed of simple and discrete components, so that the reliable identification of the power supply can be realized without any special chip. Meanwhile, the device is compatible with the power supply circuits of PSE/PD equipment. Therefore, at a relatively low cost, the power-supply/power-receiving requirements of the PSE/PD equipment compatible with the standard can be met by the device. The device is good in reliability and strong in flexibility.

Description

technical field [0001] The invention relates to the technical field of POE (Power over Ethernet), in particular to a simple and compatible POE power supply device. Background technique [0002] POE (Power Over Ethernet) refers to the connection between some IP-based terminals (such as IP phones, wireless LAN access points AP, network cameras) without any changes to the existing Ethernet Cat.5 cabling infrastructure. etc.) while transmitting data signals, it can also provide DC power supply technology for such devices. POE is also known as a local area network-based power supply system (POL, Power over LAN) or active Ethernet (Active Ethernet), sometimes referred to as Ethernet power supply, which is the use of existing standard Ethernet transmission cables to simultaneously transmit data and The latest standard specification of electrical power, and maintain compatibility with existing Ethernet systems and users. The power supply identification process can meet the IEEE 80...

Claims

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Application Information

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IPC IPC(8): H04L12/10
CPCH04L12/10
Inventor 魏爱民周明陈珍军
Owner XIAMEN YEALINK NETWORK TECH
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