CN205545187U - Be applied to voltage switching circuit of PSE switch - Google Patents
Be applied to voltage switching circuit of PSE switch Download PDFInfo
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- CN205545187U CN205545187U CN201620075092.4U CN201620075092U CN205545187U CN 205545187 U CN205545187 U CN 205545187U CN 201620075092 U CN201620075092 U CN 201620075092U CN 205545187 U CN205545187 U CN 205545187U
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- 239000003381 stabilizer Substances 0.000 claims description 36
- 239000004065 semiconductor Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012358 sourcing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a be applied to voltage switching circuit of PSE switch, it includes that power module, an on -off control module, poe ethernet power module, voltage stabilizing module, the 2nd on -off control module, 48V change 12V power conversion module and main broad signal mainboard. The utility model discloses go up the input according to different power adapter on the basis that does not influence the product characteristic property, automatic switch -over power supply mode has improved compatibility, the practicality of switch, reduction switch power consumption for it uses more extensively. The utility model relates to a be applied to voltage switching circuit of PSE switch extensively is applicable to ethernet power supply poe technical field.
Description
Technical field
The utility model relates to POE poe technical field, particularly relates to a kind of voltage commutation circuit being applied to PSE switch.
Background technology
POE is also referred to as electric power system (POL based on LAN, Power over LAN) or active Ethernet (Active Ethernet), the most also POE it is called for short, this is to utilize transmission data and the newest standards specification of electrical power while existing standard Ethernet transmission cable, and maintains the compatibility with existing Ethernet system and user.PSE (Power Sourcing Equipment) refers to the equipment powered for ethernet client equipment.IEEE 802.3af standard is new standard based on POE system POE, and it is added the relevant criterion directly powered by netting twine on the basis of IEEE 802.3, is the extension of existing ethernet standard, is also first international standard about power distribution.
Communications industry development is increasingly faster, and some small-sized PSE switches use outside 48V power supply adaptor to access, and supply Ethernet interface 48V function of supplying power by internal circuit.But sometimes simply needing to carry out work as a simple switch, the power supply adaptor of general switch is all 12V.If going to use as general switch using PSE switch, it is possible to cause the exception of common access device, and power also has waste.
Utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of compatibility of switch, practicality of improving, and reduces the voltage commutation circuit being applied to PSE switch of switch power attenuation.
The utility model be the technical scheme is that a kind of voltage commutation circuit being applied to PSE switch, and it includes that power module, the first switch control module, poe POE module, Voltage stabilizing module, second switch control module, 48V turn 12V power transfer module and Main Broad signal mainboard；Described power module is connected with poe POE module by the first switch control module；Described power module is connected with second switch control module, described second switch control module turns 12V power transfer module and is connected with 48V, described 48V turns 12V power transfer module and is connected with Main Broad signal mainboard, and described second switch control module is connected with Main Broad signal mainboard；Described first switch control module is connected with second switch control module, and described Voltage stabilizing module is connected with second switch control module, and described power module is connected with Voltage stabilizing module.
Further, described first switch control module includes the first current-limiting resistance, first voltage-stabiliser tube, first metal-oxide-semiconductor and the second voltage-stabiliser tube, the positive output end of described power module is connected by the negative pole end of the first resistance and the first voltage-stabiliser tube, the positive terminal of described first voltage-stabiliser tube and the grid of the first metal-oxide-semiconductor connect, the source electrode of described first metal-oxide-semiconductor is connected with poe POE module, the described drain electrode of the first metal-oxide-semiconductor is connected with the negative output terminal of power module, the described positive terminal of the second voltage-stabiliser tube is connected with the negative output terminal of power module, the negative pole end of described second voltage-stabiliser tube and the positive terminal of the first voltage-stabiliser tube connect.
Further, the first described metal-oxide-semiconductor is N-channel MOS pipe.
Further, described second switch control module includes: the 3rd triode, the 4th triode and relay, the described base stage of the 3rd triode is connected with the positive terminal of the first voltage-stabiliser tube, the emitter stage of described 3rd triode is connected with the negative output terminal of power module, the colelctor electrode of described 3rd triode and the base stage of the 4th triode connect, the colelctor electrode of described 4th triode is connected with the positive output end of power module, and the emitter stage of described 4th triode is connected with relay.
Further, described Voltage stabilizing module includes the 3rd current-limiting resistance, 4th current-limiting resistance, first triode, second triode and voltage stabilizing triode, the base stage of described first triode and the colelctor electrode of the second triode connect, the emitter stage of described first triode and the base stage of the second triode connect, the colelctor electrode of described first triode and the positive output end of power module, the positive input terminal of described power module is connected by the base stage of the 3rd current-limiting resistance and the first triode, it is connected by the 4th current-limiting resistance between emitter stage and the base stage of described second triode, the emitter stage of described second triode is connected with the negative pole end of voltage stabilizing triode, the described positive terminal of voltage stabilizing triode is connected with the negative output terminal of power module, the reference pole of described voltage stabilizing triode is connected with relay.
Further, described Voltage stabilizing module also includes that the 3rd voltage-stabiliser tube, the described negative pole end of the 3rd voltage-stabiliser tube are connected with the reference pole of voltage stabilizing triode, and the described positive terminal of the 3rd voltage-stabiliser tube is connected with the positive terminal of voltage stabilizing triode.
Further, the model of described voltage stabilizing triode is TL431.
The beneficial effects of the utility model are: the utility model is provided with the first switch control module, second switch control module and 48V and turns 12V power transfer module, when 48V plant-grid connection, power supply is supplied to poe POE module, it is provided that power to Ethernet POE equipment；Additionally 48V power supply turns 12V power transfer module by 48V and turns 12V and be supplied to Main Broad signal main board power supply.When 12V plant-grid connection, power supply is not poe POE module for power supply, and additionally power supply is directly Main Broad signal main board power supply.The utility model inputs according to different electrical power adapter, automatic switchover powering mode, improves the compatibility of switch, practicality, reduces switch power attenuation so that its application is more extensive.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further:
Fig. 1 is high-level schematic functional block diagram of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
As shown in Figure 1 to Figure 2, a kind of voltage commutation circuit being applied to PSE switch, it includes that power module, the first switch control module, poe POE module, Voltage stabilizing module, second switch control module, 48V turn 12V power transfer module and Main Broad signal mainboard；Described power module is connected with poe POE module by the first switch control module；Described power module is connected with second switch control module, described second switch control module turns 12V power transfer module and is connected with 48V, described 48V turns 12V power transfer module and is connected with Main Broad signal mainboard, and described second switch control module is connected with Main Broad signal mainboard；Described first switch control module is connected with second switch control module, and described Voltage stabilizing module is connected with second switch control module, and described power module is connected with Voltage stabilizing module.
Its operation principle is: described power module is that whole circuit is powered, and when 48V plant-grid connection, power supply is supplied to poe POE module, it is provided that power to Ethernet POE equipment；Additionally 48V power supply turns 12V power transfer module by 48V and turns 12V and be supplied to Main Broad signal main board power supply.When 12V plant-grid connection, power supply is not poe POE module for power supply, and additionally power supply is directly Main Broad signal main board power supply.Described first switch control module is used for controlling whether power supply is poe POE module for power supply, and it is Main Broad signal main board power supply that described first switch control module is used for control power supply whether turning 12V power transfer module by 48V.Described Voltage stabilizing module for make second switch control module at stable operating at voltages.
It is further used as preferred embodiment, described first switch control module includes the first current-limiting resistance R1, first voltage-stabiliser tube ZD1, first metal-oxide-semiconductor M1 and the second voltage-stabiliser tube ZD2, the positive output end of described power module is connected by the negative pole end of the first current-limiting resistance R1 and the first voltage-stabiliser tube ZD1, the positive terminal of described first voltage-stabiliser tube ZD1 and the grid of the first metal-oxide-semiconductor M1 connect, the source electrode of described first metal-oxide-semiconductor M1 is connected with poe POE module, the drain electrode of described first metal-oxide-semiconductor M1 is connected with the negative output terminal of power module, the positive terminal of described second voltage-stabiliser tube ZD2 is connected with the negative output terminal of power module, the negative pole end of described second voltage-stabiliser tube ZD2 and the positive terminal of the first voltage-stabiliser tube ZD1 connect.
It is further used as preferred embodiment, described second switch control module includes: the 3rd triode Q3, the 4th triode Q4 and relay K 1, the base stage of described 3rd triode Q3 is connected with the positive terminal of the first voltage-stabiliser tube ZD1, the emitter stage of described 3rd triode Q3 is connected with the negative output terminal of power module, the colelctor electrode of described 3rd triode Q3 and the base stage of the 4th triode Q4 connect, the colelctor electrode of described 4th triode Q4 is connected with the positive output end of power module, and the emitter stage of described 4th triode Q4 is connected with relay K 1.
nullIt is further used as preferred embodiment，Described Voltage stabilizing module includes the 3rd current-limiting resistance R3、4th current-limiting resistance R4、First triode Q1、Second triode Q2 and voltage stabilizing triode U1，The base stage of described first triode Q1 and the colelctor electrode of the second triode Q2 connect、The emitter stage of described first triode Q1 and the base stage of the second triode Q2 connect，The colelctor electrode of described first triode Q1 and the positive output end of power module，The positive input terminal of described power module is connected by the base stage of the 3rd current-limiting resistance R3 and the first triode Q1，It is connected by the 4th current-limiting resistance R4 between emitter stage and the base stage of described second triode Q2，The emitter stage of described second triode Q2 is connected with the negative pole end of voltage stabilizing triode U1，The positive terminal of described voltage stabilizing triode U1 is connected with the negative output terminal of power module，The reference pole of described voltage stabilizing triode U1 is connected with relay T1.
It is further used as preferred embodiment, described Voltage stabilizing module also includes the 3rd voltage-stabiliser tube ZD3, the negative pole end of described 3rd voltage-stabiliser tube ZD3 is connected with the reference pole of voltage stabilizing triode U1, and the positive terminal of described 3rd voltage-stabiliser tube ZD3 is connected with the positive terminal of voltage stabilizing triode U1.3rd voltage stabilizing triode ZD3 is used for preventing overshoot voltage.
Being further used as preferred embodiment, the model of described voltage stabilizing triode (U1) is TL431.
Being further used as preferred embodiment, described the first metal-oxide-semiconductor (M1) is N-channel MOS pipe.
The operation principle of the whole circuit of the utility model is: when power module be 48V power time, first voltage-stabiliser tube ZD1 conducting, first metal-oxide-semiconductor M1 conducting, POE POE connect end with ground conducting, POE POE function is normal；Another 3rd triode Q3 conducting, the 4th triode Q4 closes, and relay K 1 is closed, and acquiescence is connected to 48V and turns 12V power transfer module, to Main Broad signal main board power supply.Now whole system works as PSE switch.When power module be 12V power time, the first voltage-stabiliser tube ZD1 is not turned on, first metal-oxide-semiconductor M1 close, POE POE connect end connect ground disconnect, POE POE connect end function close；Other 3rd triode Q3 is not turned on, 4th triode Q4 conducting, first triode Q1, the second triode Q2 push-pull configuration can strengthen feedback, make voltage stabilizing triode U1 stabilizing low voltage relay working voltage, 3rd voltage-stabiliser tube ZD3 prevents overshoot voltage, K1 relay work switching circuit, power supply is directly connected to main signal plate and powers, and now whole system closes POE function as general switch work.
It is above preferable enforcement of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement on the premise of the utility model spirit, and deformation or the replacement of these equivalents are all contained in the application claim limited range.
Claims (7)
1. the voltage commutation circuit being applied to PSE switch, it is characterised in that: it includes that power module, the first switch control module, poe POE module, Voltage stabilizing module, second switch control module, 48V turn 12V power transfer module and Main Broad signal mainboard；
Described power module is connected with poe POE module by the first switch control module；
Described power module is connected with second switch control module, described second switch control module turns 12V power transfer module and is connected with 48V, described 48V turns 12V power transfer module and is connected with Main Broad signal mainboard, and described second switch control module is connected with Main Broad signal mainboard；
Described first switch control module is connected with second switch control module, and described Voltage stabilizing module is connected with second switch control module, and described power module is connected with Voltage stabilizing module.
The voltage commutation circuit being applied to PSE switch the most according to claim 1, it is characterized in that: described first switch control module includes the first current-limiting resistance, first voltage-stabiliser tube, first metal-oxide-semiconductor and the second voltage-stabiliser tube, the positive output end of described power module is connected by the negative pole end of the first resistance and the first voltage-stabiliser tube, the positive terminal of described first voltage-stabiliser tube and the grid of the first metal-oxide-semiconductor connect, the source electrode of described first metal-oxide-semiconductor is connected with poe POE module, the described drain electrode of the first metal-oxide-semiconductor is connected with the negative output terminal of power module, the described positive terminal of the second voltage-stabiliser tube is connected with the negative output terminal of power module, the negative pole end of described second voltage-stabiliser tube and the positive terminal of the first voltage-stabiliser tube connect.
The voltage commutation circuit being applied to PSE switch the most according to claim 2, it is characterised in that: the first described metal-oxide-semiconductor is N-channel MOS pipe.
The voltage commutation circuit being applied to PSE switch the most according to claim 1, it is characterized in that: described second switch control module includes: the 3rd triode, the 4th triode and relay, the described base stage of the 3rd triode is connected with the positive terminal of the first voltage-stabiliser tube, the emitter stage of described 3rd triode is connected with the negative output terminal of power module, the colelctor electrode of described 3rd triode and the base stage of the 4th triode connect, the colelctor electrode of described 4th triode is connected with the positive output end of power module, and the emitter stage of described 4th triode is connected with relay.
nullThe voltage commutation circuit being applied to PSE switch the most according to claim 1，It is characterized in that: described Voltage stabilizing module includes the 3rd current-limiting resistance、4th current-limiting resistance、First triode、Second triode and voltage stabilizing triode，The base stage of described first triode and the colelctor electrode of the second triode connect、The emitter stage of described first triode and the base stage of the second triode connect，The colelctor electrode of described first triode and the positive output end of power module，The positive input terminal of described power module is connected by the base stage of the 3rd current-limiting resistance and the first triode，It is connected by the 4th current-limiting resistance between emitter stage and the base stage of described second triode，The emitter stage of described second triode is connected with the negative pole end of voltage stabilizing triode，The described positive terminal of voltage stabilizing triode is connected with the negative output terminal of power module，The reference pole of described voltage stabilizing triode is connected with relay.
The voltage commutation circuit being applied to PSE switch the most according to claim 5, it is characterized in that: described Voltage stabilizing module also includes the 3rd voltage-stabiliser tube, the described negative pole end of the 3rd voltage-stabiliser tube is connected with the reference pole of voltage stabilizing triode, and the described positive terminal of the 3rd voltage-stabiliser tube is connected with the positive terminal of voltage stabilizing triode.
7. according to the voltage commutation circuit being applied to PSE switch described in any one of claim 5 to 6, it is characterised in that: the model of described voltage stabilizing triode is TL431.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620075092.4U CN205545187U (en) | 2016-01-26 | 2016-01-26 | Be applied to voltage switching circuit of PSE switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620075092.4U CN205545187U (en) | 2016-01-26 | 2016-01-26 | Be applied to voltage switching circuit of PSE switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205545187U true CN205545187U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620075092.4U Withdrawn - After Issue CN205545187U (en) | 2016-01-26 | 2016-01-26 | Be applied to voltage switching circuit of PSE switch |
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| Country | Link |
|---|---|
| CN (1) | CN205545187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515559A (en) * | 2016-01-26 | 2016-04-20 | 深圳市共进电子股份有限公司 | Voltage switching circuit applied to PSE switch |
| CN107566131A (en) * | 2017-08-29 | 2018-01-09 | 倪严辅 | PSE multichannel automatic switchover chips |
-
2016
- 2016-01-26 CN CN201620075092.4U patent/CN205545187U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515559A (en) * | 2016-01-26 | 2016-04-20 | 深圳市共进电子股份有限公司 | Voltage switching circuit applied to PSE switch |
| CN105515559B (en) * | 2016-01-26 | 2018-09-14 | 深圳市共进电子股份有限公司 | A kind of voltage commutation circuit applied to PSE interchangers |
| CN107566131A (en) * | 2017-08-29 | 2018-01-09 | 倪严辅 | PSE multichannel automatic switchover chips |
| CN107566131B (en) * | 2017-08-29 | 2020-07-10 | 倪严辅 | PSE multi-path automatic switching chip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20180914 |