Network transformer transmission circuit and system

Abstract

The invention discloses a network transformer transmission circuit and system. The network transformer transmission circuit comprises a first network signal transmission module, a first RJ connectionmodule, a first network signal receiving module, a second network signal transmission module, a second RJ connection module, a second network signal receiving module, a power supply module, a power supply receiving module and a Bob-Smith circuit module. The first network signal transmission module comprises a first transmission common mode module and a first transmission transformer module, the first transmission common mode module is connected with two ends of a first winding of the first transmission transformer module, and a second winding of the first transmission transformer module is provided with a first center tap; the second network signal transmission module comprises a second transmission common-mode module and a second transmission transformer module, the second transmission common-mode module is connected with the two ends of the first winding of the second transmission transformer module, and the second winding of the second transmission transformer module is provided with a second center tap. The circuit is simple in structure, stable in signal transmission and high in anti-interference capability.

Description

technical field [0001] The invention belongs to the technical field of POE transmission circuits, and in particular relates to a network transformer transmission circuit and system. Background technique [0002] POE (Power Over Ethernet) refers to the use of IP-based terminals (such as IP phones, wireless LAN access points AP, network cameras) without any changes to the existing Ethernet Cat. etc.) while transmitting data signals, it can also provide DC power supply technology for such devices. POE technology can guarantee the normal operation of the existing network while ensuring the security of the existing structured wiring, and minimize the cost. [0003] 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 Power over Ethernet, which uses existing standard Ethernet transmission cables to simultaneously transmit data and The latest standard specification of electrical po...

AI Technical Summary

Problems solved by technology

[0004] With the rapid development of network technology, network transformer transmission circuits have appeared, which can be used not only for network signal transmission, but also for POE transmission. However, the existing network transformer transmission circuits still have poor anti-interference ability and unstable signals. question

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