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Double-input power source and corresponding network device

A technology of dual-input power supply and input terminal, applied in the field of power supply, can solve the problems of low production cost, high production cost, large volume of dual-input power supply, etc., and achieve the effect of small volume and large volume

Inactive Publication Date: 2014-03-12
SHENZHEN TENCENT COMP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a dual-input power supply and corresponding network equipment using only one soft-start circuit. The technical problem that the dual-input power supply is large in size, high in production cost, or current impact will occur when the backup power supply is used

Method used

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  • Double-input power source and corresponding network device
  • Double-input power source and corresponding network device
  • Double-input power source and corresponding network device

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Embodiment Construction

[0056] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0057] In the figures, structurally similar units are denoted by the same reference numerals.

[0058] Please refer to image 3 , image 3It is a structural block diagram of the first preferred embodiment of the dual-input power supply of the present invention. The dual-input power supply includes a main power input terminal 31 , a backup power input terminal 32 , a soft start circuit 33 and a bus capacitor 35 . The main power input terminal 31 is c...

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Abstract

The invention relates to a double-input power source. The double-input power source comprises a main power input end for input of main power input, a backup power input end for backup power input, a soft starting circuit for performing current limiting processing on the input current of the main power input end and the input current of the backup power input end, and a bus capacitor for stabilizing the output voltage of the double-input power source, wherein the soft starting circuit is respectively connected with the main power input end and the backup power input end. The invention also relates to a network device. The two paths of power input of the double-input power source and the network device only employ one soft starting circuit so that the double-input power source has a small size, the manufacturing cost is low, and current impact when a backup power source is started can be prevented.

Description

technical field [0001] The invention relates to the field of power supplies, in particular to a dual-input power supply and corresponding network equipment. Background technique [0002] Please refer to figure 1 , figure 1 It is a structural schematic diagram of an existing dual-input power supply. The dual-input power supply includes a main power input terminal 11, a backup power input terminal 12, a soft-start circuit 13, a PFC (Power Factor Correction, power factor correction) circuit 14, and a bus capacitor 15, wherein the soft-start circuit 13 includes a soft-start resistor 131 and relay 132 . [0003] When the dual-input power supply is working, the main power supply charges the bus capacitor 15 through the main power input terminal 11. Since the power stored in the bus capacitor 15 is small at this time, the initial charging current is relatively large. At this time, the relay 132 of the soft-start circuit 13 is in an off state, and the main power supply charges t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36H02J9/04
CPCY02B70/16Y02B70/10Y02B70/30Y04S20/20
Inventor 李典林朱华杨晓伟
Owner SHENZHEN TENCENT COMP SYST CO LTD
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