CN207994622U - Lightning protection anti electrostatic protects circuit, communicating circuit, Switching Power Supply and electronic equipment - Google Patents
Lightning protection anti electrostatic protects circuit, communicating circuit, Switching Power Supply and electronic equipment Download PDFInfo
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- CN207994622U CN207994622U CN201820255357.8U CN201820255357U CN207994622U CN 207994622 U CN207994622 U CN 207994622U CN 201820255357 U CN201820255357 U CN 201820255357U CN 207994622 U CN207994622 U CN 207994622U
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- differential signal
- signal line
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- suppression diode
- transient suppression
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Abstract
A kind of lightning protection anti electrostatic protection circuit of the utility model offer, communicating circuit, Switching Power Supply and electronic equipment, the lightning protection anti electrostatic protection circuit include：The first class of protection circuit of neighbouring first differential signal interface setting, and the safe secondary protection circuit adjacent to the second differential signal interface setting.The first class of protection circuit includes：An at least gas-discharge tube, first differential signal line, second differential signal line pass through an at least gas-discharge tube and are grounded；First Transient Suppression Diode is electrically connected between first differential signal line and ground；And second Transient Suppression Diode, it is electrically connected between second differential signal line and ground.Wherein, surge energy between first differential signal line and second differential signal line is after the release of the first class of protection circuit; remaining surge energy is discharged again by the safe secondary protection circuit, is conducive to the protective capacities for improving the lightning protection anti electrostatic protection circuit.
Description
Technical field
The utility model is related to lightning protection anti electrostatic technical field more particularly to a kind of lightning protection anti electrostatic protection circuit, communications
Circuit, Switching Power Supply and electronic equipment.
Background technology
This part intends to provides background or up and down for specific embodiment of the present utility model for being stated in claims
Text.Description herein recognizes it is the prior art not because not being included in this part.
In the prior art, the lightning protection device of power supply mostly use that varistor is in parallel and the mode of gas-discharge tube ground connection into
Row lightning protection, antistatic protection.
However, the response speed of this protective device is slower, pressure limiting and bypass aerial drainage slow movement make rear class electronic device
Or circuit is easy to be affected.In addition, the protection circuit of single-stage fails to meet the lightning protection of power supply, antistatic guarantee requirement.
Utility model content
In view of this, the utility model provides a kind of lightning protection anti electrostatic that lightning protection anti electrostatic is more secure protection circuit, this
Utility model also provides a kind of communicating circuit, Switching Power Supply and electronic equipment including lightning protection anti electrostatic protection circuit.
A kind of lightning protection anti electrostatic protection circuit, is set between the first differential signal interface and the second differential signal interface,
The first differential signal interface is electrically connected second differential signal by the first differential signal line and the second differential signal line
Interface, the lightning protection anti electrostatic protection circuit include：
The first class of protection circuit of neighbouring first differential signal interface setting, including：
An at least gas-discharge tube, first differential signal line, second differential signal line pass through described at least one
Gas-discharge tube is grounded；
First Transient Suppression Diode is electrically connected between first differential signal line and ground；And
Second Transient Suppression Diode is electrically connected between second differential signal line and ground；And
The safe secondary protection circuit of neighbouring second differential signal interface setting；
Wherein, the surge energy between first differential signal line and second differential signal line passes through the level-one
After the release for protecting circuit, remaining surge energy is discharged again by the safe secondary protection circuit.
Further, the safe secondary protection circuit includes：
Third Transient Suppression Diode is parallel between first differential signal line and second differential signal line；
4th Transient Suppression Diode is electrically connected between first differential signal line and ground；And
5th Transient Suppression Diode is electrically connected between second differential signal line and ground.
Further, the lightning protection anti electrostatic protection circuit includes a three-level gas-discharge tube, the three-level gas discharge
Two electrodes in pipe are electrically connected first differential signal line and second differential signal line, the three-level gas discharge
Other electrode ground connection in pipe.
Further, first Transient Suppression Diode and second Transient Suppression Diode are unidirectional transient state suppression
Diode processed.
Further, the third Transient Suppression Diode, the 4th Transient Suppression Diode and the 5th transient state
It is unidirectional Transient Suppression Diode to inhibit diode.
A kind of communicating circuit, including communication control circuit, network signal termination power, network interface and any one as above
The lightning protection anti electrostatic protects circuit, wherein the network signal termination power includes the first differential signal interface, institute
It includes the second differential signal interface to state communication control circuit, and the first differential signal interface is believed by first difference
Number line and second differential signal line are electrically connected the second differential signal interface, and the network signal termination power passes through institute
State network interface and external equipment transmission network signal.
Further, it is electrically connected with multipair differential signal between the network interface and the network signal termination power
Line, the multipair differential signal line include that difference sends signal wire and differential received signal line, the network signal coupling electricity
Road includes：
For the common mode inductance of filtering, it is series in each pair of differential signal line；
The first tap inductor for coupling filtering, the differential received signal line are electrically connected in first tap
The tap at the both ends of inductance, first tap inductor terminates power end；
The second tap inductor for coupling filtering, the difference send signal wire and are electrically connected in second tap
The both ends of inductance, the tap terminals ground connection of second tap inductor；
For multiple capacitances of isolated DC level, it is connected on the common mode inductance respectively and is connect with first differential signal
On multipair differential signal line between mouthful.
A kind of Switching Power Supply, including the lightning protection anti electrostatic protection circuit described in any one as above.
A kind of Switching Power Supply, including the communicating circuit described in any one as above.
Further, the Switching Power Supply further includes the POE circuits being electrically connected with the network signal termination power, described
POE circuits are power receiving equipment power supply and transmission network signal by the network interface.
A kind of electronic equipment, including the Switching Power Supply described in any one as above.
The lightning protection anti electrostatic protection circuit that the utility model embodiment provides includes the first class of protection circuit and described
Safe secondary protection circuit, wherein described in surge energy between first differential signal line and second differential signal line passes through
After the release of first class of protection circuit, remaining surge energy is discharged again by the safe secondary protection circuit, is conducive to improve
The protective capacities of the lightning protection anti electrostatic protection circuit, to advantageously reduce caused by thunder and lightning, electrostatic or other modes
Surging signal is damaged caused by coupled circuit.
Description of the drawings
In order to illustrate more clearly of the utility model embodiment/mode technical solution, embodiment/mode will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is some of the utility model
Embodiment/mode for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the circuit block diagram of Switching Power Supply provided by the utility model.
Fig. 2 is the circuit diagram that lightning protection anti electrostatic shown in FIG. 1 protects circuit.
Fig. 3 is the circuit diagram of network signal termination power shown in FIG. 1 and network interface.
Main element symbol description
| Switching Power Supply | 100 |
| Communication control circuit | 110 |
| Second differential signal interface | 112 |
| Lightning protection anti electrostatic protects circuit | 130 |
| First class of protection circuit | 132 |
| Safe secondary protection circuit | 134 |
| POE circuits | 140 |
| Network signal termination power | 150 |
| First differential signal interface | 152 |
| Network interface | 170 |
| Transformer | T1 |
| Optical coupler | U1 |
| First differential signal line | SIG+ |
| Second differential signal line | SIG- |
| Send signal wire | TX+ |
| Send signal wire | TX- |
| Receive signal wire | RX+ |
| Receive signal wire | RX- |
| Three-level gas-discharge tube | GDT |
| First Transient Suppression Diode | ZD1 |
| Second Transient Suppression Diode | ZD2 |
| Third Transient Suppression Diode | ZD3 |
| 4th Transient Suppression Diode | ZD4 |
| 5th Transient Suppression Diode | ZD5 |
| Common mode inductance | LFA-LFD |
| First tap inductor | LFE |
| Second tap inductor | LFF |
| Capacitance | C1-C8 |
| Power end | V |
Following specific implementation mode will further illustrate the utility model in conjunction with above-mentioned attached drawing.
Specific implementation mode
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have
The utility model is described in detail in body embodiment.It should be noted that in the absence of conflict, embodiments herein
And the feature in embodiment can be combined with each other.
Many details are elaborated in the following description in order to fully understand the utility model, described implementation
Example is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ability
It is new to belong to this practicality for the every other embodiment that domain those of ordinary skill is obtained without making creative work
The range of type protection.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
Referring to Fig. 1, for the circuit block diagram of Switching Power Supply 100 provided by the utility model.Switching Power Supply 100 includes anti-
Thunder anti-static protection circuit 130, it is to be understood that lightning protection anti electrostatic protect circuit can also be applied to other communicating circuits,
It is quiet with the lightning-protection for improving the communicating circuit, the Switching Power Supply and the electronic equipment in Switching Power Supply and electronic equipment
Electric energy power.It is understood that communicating circuit provided by the utility model and Switching Power Supply 100 can be applied to electronic equipment
In.
As shown in Figure 1, Switching Power Supply 100 includes AC voltage input circuits, EMI circuits, input rectifying filter circuit, power
Control switch, pwm control circuit, transformer T1, optical coupler U1, feedback control circuit, output rectifier and filter, Communication Control
Circuit 110, lightning protection anti electrostatic protection circuit 130, POE circuits 140, network signal termination power 150 and network interface 170.Its
In, the AC voltage input circuits, the EMI circuits, the input rectifying filter circuit are sequentially connected electrically.The input rectifying
Filter circuit is electrically connected the power control switching, the pwm control circuit and transformer T1, the power control switching and is electrically connected
Transformer T1 is met, the pwm control circuit is electrically connected optical coupler U1, and the anode and cathode of optical coupler U1 are electrically connected the feedback control
Circuit processed, the output rectifier and filter out-put supply signal.Communication control circuit 110, lightning protection anti electrostatic protect circuit
130, network signal termination power 150 and network interface 170 are sequentially connected electrically, POE circuits 140 and network signal termination power
150 electrical connections.
Alternating current is inputted from the AC voltage input circuits, after the EMI circuits filter out electromagnetic interference, then through described defeated
Enter current rectifying and wave filtering circuit and carry out rectifying and wave-filtering, required voltage is converted by transformer T1, finally passes through the output rectification
The power supply signal exported after the rectifying and wave-filtering of filter circuit.Lightning protection anti electrostatic protection circuit 130 is electrically connected to Communication Control
On differential signal line between circuit 110 and network signal termination power 150, advantageously reduce due to thunder and lightning, electrostatic or other
Influence of the surging signal caused by mode to communication control circuit 110.POE circuits 140 pass sequentially through network signal termination power
150 and network interface 170 be power receiving equipment power and transmission network signal.
Referring to Fig. 2, protecting the circuit diagram of circuit 130 for lightning protection anti electrostatic shown in FIG. 1.Network signal termination power
150 include the first differential signal interface 152, and communication control circuit 110 includes the second differential signal interface 112, the first difference letter
Number interface 152 passes through the first differential signal line SIG+ and the second differential signal line SIG- is electrically connected the second differential signal interface 112.
Lightning protection anti electrostatic protection circuit 130 include：The first class of protection circuit of neighbouring first differential signal interface 152 setting
132, and adjacent to the safe secondary protection circuit 134 of the second differential signal interface 112 setting.Wherein, the first differential signal line SIG+
And the second surge energy between differential signal line SIG-, after the release of first class of protection circuit 132, remaining surge energy is logical
It crosses safe secondary protection circuit 134 to be discharged again, to realize that the lightning protection anti electrostatic to communication control circuit 110 is protected, in turn
Reduce damage of the surging signal to communication control circuit 110.
Further, first class of protection circuit 132 includes：An at least gas-discharge tube, the first Transient Suppression Diode (TVS
Pipe) ZD1 and the second Transient Suppression Diode ZD2.First differential signal line SIG+, the second differential signal line SIG- by it is described extremely
Few gas-discharge tube ground connection；First Transient Suppression Diode ZD1 is electrically connected between the first differential signal line SIG+ and ground, i.e.,
The cathode of first Transient Suppression Diode ZD1 is electrically connected the first differential signal line SIG+, and the first Transient Suppression Diode ZD1 is just
Pole is grounded；Second Transient Suppression Diode ZD2 is electrically connected between the second differential signal line SIG- and ground, i.e. the second transient state inhibits
The cathode of diode ZD2 is electrically connected the second differential signal line SIG-, the plus earth of the second Transient Suppression Diode ZD2.
In the present embodiment, using a three-level gas-discharge tube GDT, two electrodes point in the three-level gas-discharge tube
It is not electrically connected the first differential signal line SIG+ and the second differential signal line SIG-, the other electricity in three-level gas-discharge tube GDT
Pole is grounded.Three-level gas-discharge tube GDT is used to release instantaneous overcurrent and limits instantaneous overvoltage.In one embodiment, level-one
It includes two secondary gas discharge tubes to protect circuit 132, and each gas-discharge tube includes two electrodes, wherein an electrode is grounded, separately
One electrode is electrically connected a differential signal line, such as the first differential signal line SIG+ or the second differential signal line SIG-.
First Transient Suppression Diode ZD1 and the second Transient Suppression Diode ZD2 is used for first within the extremely short time
The voltage clamping of differential signal line SIG+ and the second differential signal line SIG- over the ground is in desired voltage numberical range.First transient state
Diode ZD1 and the second Transient Suppression Diode ZD2 is inhibited to be used cooperatively with the gas-discharge tube, it can be by thunder and lightning, electrostatic
Or surge energy caused by other modes discharges rapidly, specifically, the high voltage in surge energy is mainly pressed down by the first transient state
Diode ZD1 processed and the second quick clampers of Transient Suppression Diode ZD2 are within the scope of default value, the high current in surge energy
Mainly released over the ground by three-level gas-discharge tube GDT.
Safe secondary protection circuit 134 includes：Third Transient Suppression Diode ZD3, the 4th Transient Suppression Diode ZD4 and the 5th
Transient Suppression Diode ZD5.Wherein, it is poor to be parallel to the first differential signal line SIG+ and second by third Transient Suppression Diode ZD3
Between sub-signal line SIG-.In the present embodiment, the cathode of third Transient Suppression Diode ZD3 is electrically connected the first differential signal
The second differential signal line SIG- of anode electrical connection of line SIG+, third Transient Suppression Diode ZD3.It is understood that one
In kind embodiment, anode the first differential signal line SIG+ of electrical connection of third Transient Suppression Diode ZD3, third transient state inhibits
The cathode of diode ZD3 is electrically connected the second differential signal line SIG-.The electrical connection first of 4th Transient Suppression Diode ZD4 cathode is poor
Sub-signal line SIG+, the plus earth of third Transient Suppression Diode ZD3.5th Transient Suppression Diode ZD5 cathode are electrically connected
Second differential signal line SIG-, the plus earth of the 5th Transient Suppression Diode ZD5.
Remaining surge voltage between first differential signal line SIG+ and the second differential signal line SIG- passes through third transient state
Inhibit the rapid clampers of diode ZD3.In addition, the remaining surge on the first differential signal line SIG+ and the second differential signal line SIG-
Energy is released by the 4th Transient Suppression Diode ZD4 and the 5th Transient Suppression Diode ZD5 over the ground respectively.Safe secondary protection circuit
134 are arranged adjacent to communication control circuit 110, are discharged again to the remaining surge voltage in differential signal line, are conducive to carry
The protective capacities of high lightning protection anti electrostatic protection circuit 130, to advantageously reduce caused by thunder and lightning, electrostatic or other modes
Surging signal is to damage caused by communication control circuit 110.
In the present embodiment, the first Transient Suppression Diode ZD1, the second Transient Suppression Diode ZD2, the suppression of third transient state
Diode ZD3, the 4th Transient Suppression Diode ZD4 and the 5th Transient Suppression Diode ZD5 processed are that unidirectional transient state inhibits two poles
Pipe, it is to be understood that in one embodiment, above-mentioned Transient Suppression Diode is two-way Transient Suppression Diode.
It is understood that in one embodiment, communication control circuit 110 passes through multipair differential signal line and network
Signal coupling circuit 150 is electrically connected, wherein each pair of differential signal line includes that the first differential signal line SIG+ and the second difference are believed
Number line SIG-.Lightning protection anti electrostatic protection is both provided between each pair of first differential signal line SIG+ and the second differential signal line SIG-
Circuit 130, to realize that the lightning protection anti electrostatic to each pair of first differential signal line SIG+ and the second differential signal line SIG- is protected, from
And the surging signal caused by thunder and lightning, electrostatic or other modes is advantageously reduced to damage caused by communication control circuit 110
Probability.
The lightning protection anti electrostatic protection circuit 130 that the utility model embodiment provides includes first class of protection circuit 132 and two
Grade protection circuit 134, wherein the surge energy between the first differential signal line SIG+ and the second differential signal line SIG- passes through one
After the release of grade protection circuit 132, remaining surge energy is discharged again by safe secondary protection circuit 134, is conducive to improve
Lightning protection anti electrostatic protects the protective capacities of circuit 130, unrestrained caused by thunder and lightning, electrostatic or other modes to advantageously reduce
Signal is gushed to damage caused by communication control circuit 110.
Referring to Fig. 3, for network signal termination power 150 shown in FIG. 1 and the circuit diagram of network interface 170.Network connects
The differential networks signals that mouth 170 is received and sent carry out signal filtering and coupling by network signal termination power 150, are conducive to
Enhance signal, to improve the transmission rate of differential networks signal.
Specifically, multipair differential signal line, institute are electrically connected between network interface 170 and network signal termination power 150
It includes that difference sends signal wire, differential received signal line and other differential signal lines, the difference to state multipair differential signal line
It includes sending signal wire TX+ and sending signal wire TX- to send signal wire, and the differential received signal line includes receiving signal wire RX
+ and reception signal wire RX-.
Network signal termination power 150 includes：Common mode inductance LFA-LFD, the first tap inductor LFE, the second tap inductor
LFF and capacitance C1-C8.
Common mode inductance LFA-LFD is series at respectively in each pair of differential signal line, in the present embodiment, common mode inductance LFA
Upper first inductance coil, which is series at, to be received on signal wire RX+, and upper second inductance coils of common mode inductance LFA are series at reception signal wire
On RX-.It is understood that common mode inductance LFB is series in the same way sends signal wire TX+ and transmission signal wire TX-
On, common mode inductance LFC-LFD is series in other differential signal lines.Common mode inductance LFA-LFD is used to believe the multipair difference
Signal in number line is filtered, and hinders passing through for difference mode signal, is influenced on the transmission of differential signal minimum.
It receives signal wire RX+ and is electrically connected in the both ends of the first tap inductor LFE, the first pumping with signal wire RX- is received
The tap of head inductance LFE terminates power end V, receives signal wire RX+ and is coupled with differential mode with the differential signal received in signal wire RX-
Mode be filtered and couple DC level, receive signal wire RX+ with the differential signal received in signal wire RX- and generate direct current
Biasing is conducive to enhance signal to improve the transmission rate for the differential received signal transmitted in the differential received signal.
It sends signal wire TX+ and is electrically connected in the both ends of the second tap inductor LFF, the second pumping with signal wire TX- is sent
The tap terminals ground connection of head inductance LFF, is sent signal wire TX+ and is coupled with differential mode with the differential signal transmitted in signal wire TX- is sent
Mode be filtered and couple DC level, send signal wire TX+ with the differential signal sent in signal wire TX- and generate direct current
Biasing, being conducive to enhances signal sends the transmission rate that the difference transmitted in signal sends signal to improve the difference.
For multiple capacitance C1-C8 of isolated DC level, it is connected on common mode inductance LFA-LFD respectively and the first difference is believed
On the multipair differential signal line between number interface 152, the varying level of the heterogeneous networks equipment room of cable connection is isolated.
In the present embodiment, the varying level that capacitance C1-C8 is used to be isolated between power receiving equipment and communication control circuit 110, to
Avoid the equipment damage caused by network signal level is incompatible.
The network signal termination power 150 that the utility model embodiment provides is used to receive network interface 170 and send out
The differential signal sent is filtered and couples, and is conducive to enhance signal to improve the transmission rate of differential signal.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are included in the utility model.Any reference numeral in claim should not be considered as limitation
Involved claim.Furthermore, it is to be understood that one word of " comprising " is not excluded for other units or step, odd number is not excluded for plural number.Device
The multiple devices stated in claim can also be realized by the same device or system by software or hardware.First,
Second equal words are used to indicate names, and are not represented any particular order.
Finally it should be noted that above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although
The utility model is described in detail with reference to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be right
The technical solution of the utility model is modified or equivalent replacement, without departing from the spirit and model of technical solutions of the utility model
It encloses.
Claims (11)
1. a kind of lightning protection anti electrostatic protects circuit, it is set between the first differential signal interface and the second differential signal interface, institute
The first differential signal interface is stated to connect by the first differential signal line and the second differential signal line electrical connection second differential signal
Mouthful, which is characterized in that lightning protection anti electrostatic protection circuit includes：
The first class of protection circuit of neighbouring first differential signal interface setting, including：
An at least gas-discharge tube, first differential signal line, second differential signal line pass through an at least gas
Discharge tube is grounded；
First Transient Suppression Diode is electrically connected between first differential signal line and ground；And
Second Transient Suppression Diode is electrically connected between second differential signal line and ground；And
The safe secondary protection circuit of neighbouring second differential signal interface setting；
Wherein, the surge energy between first differential signal line and second differential signal line passes through the first class of protection
After the release of circuit, remaining surge energy is discharged again by the safe secondary protection circuit.
2. lightning protection anti electrostatic as described in claim 1 protects circuit, which is characterized in that the safe secondary protection circuit includes：
Third Transient Suppression Diode is parallel between first differential signal line and second differential signal line；
4th Transient Suppression Diode is electrically connected between first differential signal line and ground；And
5th Transient Suppression Diode is electrically connected between second differential signal line and ground.
3. lightning protection anti electrostatic as described in claim 1 protects circuit, which is characterized in that the lightning protection anti electrostatic protects circuit packet
Include a three-level gas-discharge tube, two electrodes in the three-level gas-discharge tube be electrically connected first differential signal line and
Second differential signal line, the other electrode ground connection in the three-level gas-discharge tube.
4. lightning protection anti electrostatic as described in claim 1 protects circuit, which is characterized in that first Transient Suppression Diode and
Second Transient Suppression Diode is unidirectional Transient Suppression Diode.
5. lightning protection anti electrostatic as claimed in claim 2 protects circuit, which is characterized in that the third Transient Suppression Diode,
4th Transient Suppression Diode and the 5th Transient Suppression Diode are unidirectional Transient Suppression Diode.
6. a kind of communicating circuit, which is characterized in that including communication control circuit, network signal termination power, network interface and such as
Lightning protection anti electrostatic described in claim 1-5 any one protects circuit, wherein the network signal termination power includes described
First differential signal interface, the communication control circuit include the second differential signal interface, and first differential signal connects
Mouth passes through first differential signal line and second differential signal line is electrically connected the second differential signal interface, the net
Network signal coupling circuit passes through the network interface and external equipment transmission network signal.
7. communicating circuit as claimed in claim 6, which is characterized in that the network interface and the network signal termination power
Between be electrically connected with multipair differential signal line, the multipair differential signal line includes that difference sends signal wire and differential received letter
Number line, the network signal termination power include：
For the common mode inductance of filtering, it is series in each pair of differential signal line；
The first tap inductor for coupling filtering, the differential received signal line are electrically connected in first tap inductor
Both ends, the tap of first tap inductor terminates power end；
The second tap inductor for coupling filtering, the difference send signal wire and are electrically connected in second tap inductor
Both ends, second tap inductor tap terminals ground connection；
For multiple capacitances of isolated DC level, be connected on respectively the common mode inductance and the first differential signal interface it
Between multipair differential signal line on.
8. a kind of Switching Power Supply, which is characterized in that include the lightning protection anti electrostatic protection electricity as described in claim 1-5 any one
Road.
9. a kind of Switching Power Supply, which is characterized in that include the communicating circuit as described in claim 6-7 any one.
10. Switching Power Supply as claimed in claim 9, which is characterized in that the Switching Power Supply further includes and the network signal
The POE circuits of termination power electrical connection, the POE circuits are that power receiving equipment is powered and transmission network is believed by the network interface
Number.
11. a kind of electronic equipment, which is characterized in that include the Switching Power Supply as described in claim 8-10 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820255357.8U CN207994622U (en) | 2018-02-13 | 2018-02-13 | Lightning protection anti electrostatic protects circuit, communicating circuit, Switching Power Supply and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820255357.8U CN207994622U (en) | 2018-02-13 | 2018-02-13 | Lightning protection anti electrostatic protects circuit, communicating circuit, Switching Power Supply and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207994622U true CN207994622U (en) | 2018-10-19 |
Family
ID=63825664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820255357.8U Active CN207994622U (en) | 2018-02-13 | 2018-02-13 | Lightning protection anti electrostatic protects circuit, communicating circuit, Switching Power Supply and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207994622U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072628A (en) * | 2020-09-22 | 2020-12-11 | 福建星网视易信息系统有限公司 | Data interface protection circuit and data interface |
| CN113726626A (en) * | 2021-08-31 | 2021-11-30 | 天津津航计算技术研究所 | Filter protection circuit based on CAN bus driver chip |
-
2018
- 2018-02-13 CN CN201820255357.8U patent/CN207994622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072628A (en) * | 2020-09-22 | 2020-12-11 | 福建星网视易信息系统有限公司 | Data interface protection circuit and data interface |
| CN113726626A (en) * | 2021-08-31 | 2021-11-30 | 天津津航计算技术研究所 | Filter protection circuit based on CAN bus driver chip |
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