Power supply circuit, relay device and power over ethernet system
AssigneeHangzhou Hikvision Digital Technology Co., Ltd.
InventorWeimin Wang
Life of this patent
Estimating the term…
Abstract
A power supply circuit, a relay device and a Power over Ethernet system related to the electronic technical field are provided. In the power supply circuit, each rectifier module has its positive output end connected to a positive supply pin, and a negative output end connected to a first end of a switch control module. The positive supply pin is connected to a positive terminal of a relay circuit in the relay device. The switch control module has a second end connected to a negative supply pin, and a control end connected to the positive supply pin. The negative supply pin is connected to a negative terminal of the relay circuit. The switch control module allows conduction between the first end and the second end when the rectifier module outputs a voltage greater than a preset threshold.
Claims11
A relay device for connecting a first network cable with a second network cable, comprising:
- a relay circuit;
- a power supply circuit for powering the relay circuit, comprising at least one rectifier module and a switch control module, wherein, each rectifier module has an input end connected to an input interface of the relay device, a positive output end connected to a positive supply pin, and a negative output end connected to a first end of the switch control module, wherein, the positive supply pin is connected to a positive terminal of the relay circuit;
- and the switch control module has a second end connected to a negative supply pin, and a control end connected to the positive supply pin, wherein, the negative supply pin is connected to a negative terminal of the relay circuit;
- and wherein, the switch control module allows conduction between the first end and the second end when the rectifier module outputs a voltage greater than a preset threshold;
- and
- a first PHY chip connected to the first network cable and a second PHY chip connected to the second network cable;
- wherein, a data transmission interface of the first PHY chip is communicatively connected to a data reception interface of the second PHY chip, a data reception interface of the first PHY chip is communicatively connected to a data transmission interface of the second PHY chip, and the power supply circuit is connected to and powers the first PHY chip and the second PHY chip.
Dependencies are inferred from the claim text.