CN205792236U - Artificial mains network's circuit - Google Patents
Artificial mains network's circuit Download PDFInfo
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- CN205792236U CN205792236U CN201620725831.XU CN201620725831U CN205792236U CN 205792236 U CN205792236 U CN 205792236U CN 201620725831 U CN201620725831 U CN 201620725831U CN 205792236 U CN205792236 U CN 205792236U
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- multidiameter option
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Abstract
This utility model belongs to electronic technology field, particularly relates to artificial mains network's circuit, including switches set, the first power splitter, the second power splitter, the first attenuator, the second attenuator, the first transformator, the second transformator；The outfan output common mode voltage of described first attenuator, the outfan output differential mode voltage of described second attenuator.This utility model is by using different switch combinations to realize different output ports, if switch combination uses one group of multidiameter option switch and double-point double-throw switch, artificial mains network's circuit the most of the present utility model has 3 output ports；During if switch combination uses 4 multidiameter option switchs, artificial mains network's circuit the most of the present utility model be single delivery outlet, solution user with when head to be inserted, very inconvenient problem.
Description
Technical field
The present invention relates to electronic technology field；Relate to the artificial mains network in a kind of instrument for measuring Conduction Interference
Circuit.
Background technology
In prior art, it is used for the equipment measuring the instrument that conduction (disturbance voltage) is disturbed in radio-frequency region for tested
Stable impedance is provided between arrangement terminal and reference ground.The most again by from electrical network garbage signal and measuring circuit every
Leave, the interference voltage being devices under only is coupled to measure the input of receiver.The performance of this product conforms generally to
CISPR16-1-2:2006 standard-required.Fig. 1 is the circuit structure of the artificial mains network of a standard；Wherein, L1-IN is
The live wire input of alternating current power supply, N-IN is the zero line input of alternating current power supply, and PE is protecting field；The live wire of L1-OUT alternating current power supply
Output, N-OUT is the zero line output of alternating current power supply, and the two terminal goes to connect equipment under test.The Conduction Interference letter of equipment under test
Number then it is coupled to VL and VN from accessing LISN here.The interference voltage of VL with VN corresponding live wire respectively and the interference electricity of zero line
Pressure.Switch K1, K2 are used for the interference voltage VL of synchronism switching live wire, and the interference voltage VN of zero line is to outfan.Outfan is connected to
One audiofrequency spectrometer or receiver, be used for analyzing the size of the interference voltage of certain Frequency point.The artificial mains network of this standard
A single live wire or the interference voltage of zero line can only be measured, it is impossible to for the rectification of electromagnetic compatibility by more information.According to
The theoretical research of Switching Power Supply finds, the conducted interference signal of Switching Power Supply all can represent by differential mode and common-mode signal.Differential mode
Interference is the interference produced between live wire and zero line, and common mode disturbances is the interference of the generation between live wire or zero line and ground.If
Interference signal VL and VN on L/N, and this signal can have been regarded common-mode voltage VC and differential mode voltage VD as and close
Become.VL=(VC+VD)/2；VN=(VC-VD )/2；Suppression differential mode interference signal and common mode interference signal generally effective method
It is exactly to install Electromagnetic interference filter additional in Switching Power Supply input circuit.And the EMI wave filter that Switching Power Supply input uses
It is a kind of bidirectional filter, is the low pass filter being made up of electric capacity and inductance, the suppression common mode disturbances that each element is corresponding
It is different with the function of differential mode interference.
But, in prior art, artificial mains network can only measure a single live wire or the interference voltage of zero line, it is impossible to
For the rectification of electromagnetic compatibility by the technical problem of more information.
Summary of the invention
The technical purpose of the present invention is to overcome to measure a single live wire or the interference voltage of zero line in prior art,
Cannot be that the rectification of electromagnetic compatibility is by the technical problem of more information；A kind of simple separation common mode differential mode voltage is provided
Artificial mains network's circuit.
For realizing above technical purpose, the technical scheme is that
Artificial mains network's circuit, including switches set, the first power splitter, the second power splitter, the first attenuator, the second decay
Device, the first transformator, the second transformator；
The input of described switches set is started to exchange fire the interference voltage of line and the interference voltage of zero line respectively, described first power splitter
Input be connected with switches set respectively, its output termination first attenuator, the input of described second power splitter connects the respectively
One transformator and the outfan of the second transformator, its output termination second attenuator, the described first former limit of Transformer Selection and pay
The wide-band transformer that limit Same Name of Ends is identical, its input is connected with switches set, and the described second former limit of Transformer Selection and pair limit are same
The wide-band transformer that name end differs, its input is connected with switches set, the outfan output common mode electricity of described first attenuator
Pressure, the outfan output differential mode voltage of described second attenuator.
Preferably, described switches set includes the first multidiameter option switch, the second multidiameter option switch, double-point double-throw switch,
The common port of described first multidiameter option switch is started to exchange fire the interference voltage of line, the upper termination of described first multidiameter option switch
The input of one power splitter, wherein position terminates the input of the first transformator, and its next end is upper with described double-point double-throw switch
End outfan and lower end input connect, the interference voltage of the public terminal connecting zero line of described second multidiameter option switch, and described the
Another input of upper termination first power splitter of two multidiameter option switchs, wherein position terminates the input of the second transformator,
Its next end is connected with upper end input and the lower end outfan of described double-point double-throw switch, described double-point double-throw switch public
One earth resistance composition zero line live wire handover network of end input termination, is exported zero by the common port outfan of double-point double-throw switch
Line voltage or hot voltage.
Preferably, described multidiameter option switch selects No. 3 synchro switches.
Preferably, described switches set includes that the first multidiameter option switch, the second multidiameter option switch, the 3rd multi-path choice are opened
Closing, the common port of described first multidiameter option switch is started to exchange fire the interference voltage of line, and its first gear connects the input of the first power splitter
End, its second gear connects the input of the first transformator, and its third gear connects the third gear of the 3rd multidiameter option switch, and it is the years old
Four gears connect an earth resistance, the interference voltage of the public terminal connecting zero line of described second multidiameter option switch, its first gear
Connecing another input of the first power splitter, its second gear connects the input of the second transformator, and its third gear connects another and connects
Earth resistance, its fourth speed position connects the fourth speed position of the 3rd multidiameter option switch, the first gear of described 3rd multidiameter option switch
Connecing the outfan of the first attenuator, its second gear connects the outfan of the second attenuator, and its common port is synchronism switching outfan.
Preferably, described multidiameter option switch selects No. 4 synchro switches.
Preferably, described earth resistance all selects 50 Europe resistance.
The present invention realizes different output ports, if switch combination uses more than one group by using different switch combinations
When road selects switch and double-point double-throw switch, then artificial mains network's circuit of the present invention has 3 output ports；If switches set
When closing 4 multidiameter option switchs of employing, then artificial mains network's circuit of the present invention is single delivery outlet, the when that solution user using
Head to be inserted, very inconvenient problem.Both modes can measure the interference voltage of live wire or zero line simultaneously, it is possible to for electricity
More information is passed through in the rectification of magnetic compatibility, moreover it is possible to provide artificial mains network's electricity of a kind of simple separation common mode differential mode voltage
Road.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of artificial mains network's circuit of a standard of the prior art.
The circuit theory diagrams of Fig. 2 one embodiment of the invention.
The circuit theory diagrams of Fig. 3 another embodiment of the present invention.
Detailed description of the invention
In conjunction with Fig. 2 to Fig. 3, describe the detailed description of the invention of the present invention in detail.
The present invention provides a kind of artificial mains network's circuit, including switches set, the first power splitter S1, the second power splitter S2,
First attenuator ATT1, the second attenuator ATT2, the first transformator T1, the second transformator T2.
Concrete, the input of switches set is started to exchange fire the interference voltage VL of line and the interference voltage VN of zero line, the first merit respectively
The input dividing device S1 is connected with switches set respectively, its output termination the first attenuator ATT1, the input of the second power splitter S2
Connect the first transformator T1 and the outfan of the second transformator T2 respectively, its output termination the second attenuator ATT2, the first transformator
T1 selects the wide-band transformer that former limit is identical with paying limit Same Name of Ends, and its input is connected with switches set, and the second transformator T2 selects
The wide-band transformer that former limit and pair limit Same Name of Ends differ, its input is connected with switches set, the output of the first attenuator ATT1
The outfan output differential mode voltage VDM of end output common mode voltage VCM, the second attenuator ATT2.
The present invention uses a power splitter S1 to realize the addition to signal, constitutes common-mode voltage split circuit, output common mode
Voltage VCM, uses an anti-phase transformator T2, the transformator T1 of a homophase, a power splitter S2 to realize subtracting each other of signal,
Constitute differential mode voltage split circuit, export differential mode voltage VDM, after common mode and differential mode split circuit, respectively add a decay
Device, can carry out the coupling of impedance, it is also possible to adjust the size of output signal.So can be common mode and differential mode split circuit
Overall attenuation coefficient adjustment to integer, such as-10DB ,-5DB.User is facilitated to calculate.
The present invention is with an anti-phase transformator to a signal inversion, and the transformator of another homophase is to another signal
Carry out the transmission of 1:1 or other no-load voltage ratios.It is to make the time delay of two paths of signals and impedance operator complete by the purpose of two transformators
Symmetrical, it is simple to power splitter below realizes the high accuracy to signal and is added, and last total effect is exactly the phase of two signals
Subtract.If the transformator of a few homophase, precision can decline.
The present invention can also realize different output ports by using different switch combinations.
Embodiment 1, artificial mains network's circuit of the present invention has the embodiment of 3 output ports as follows:
The present embodiment is delivered to signal VL, VN in different circuit by multidiameter option switch, then separates through common-mode voltage
Circuit separation common-mode voltage VCM, through differential mode voltage split circuit separation differential mode voltage VDM.Never by VL, VN, VCM, VDM finally
Same output port output.
In conjunction with Fig. 2, concrete, switches set includes that the first multidiameter option switch K1, the second multidiameter option switch K2, double-pole are double
Throw switch K3, the common port of the first multidiameter option switch K1 starts to exchange fire the interference voltage VL of line, and the first multidiameter option switch K1's is upper
The input of position termination the first power splitter S1, wherein position terminates the input of the first transformator T1, its next end and DPDT
Upper end outfan and the lower end input of switch K3 connect, the interference voltage of the public terminal connecting zero line of the second multidiameter option switch K2
Another input of upper termination the first power splitter S1 of VN, the second multidiameter option switch K2, wherein position terminates the second transformator
The input of T2, its next end is connected with upper end input and the lower end outfan of double-point double-throw switch K3, double-point double-throw switch
Common port input one earth resistance R1 of termination of K3 forms zero line live wire handover network, by the common port of double-point double-throw switch K3
Outfan output neutral voltage VN or hot voltage VL.Wherein, earth resistance selects 50 Europe resistance.
Additionally, multidiameter option switch (K1, K2) is synchronism switching, when the common port of K1 and the first gear connect, multichannel
Select switch K2 too.
In Fig. 2, multidiameter option switch preferentially selects No. 3 synchro switches.
Operation principle is: the interference signal VL and the interference signal VN of zero line of live wire, through a multidiameter option switch
Combination (K1 and K2) switch over.The switch of multidiameter option switch (K1 and K2) is beaten when upper end, VL and VN delivers to one
Individual power splitter S1, allows VL and VN be added, then through an attenuator ATT1 to outfan common-mode voltage VCM.K1 and K2 switchs
Beating when middle position end, VL first delivers in the wide-band transformer T1 that a former limit is identical with paying limit Same Name of Ends, and output remains VL.VN
First deliver to, in the wide-band transformer T2 that a former limit is different with paying limit Same Name of Ends, export anti-phase, be negative VN.It is then delivered to a merit
Divide device S2, allow VL and negative VN be added.The most total effect is VL-VN.Eventually pass an attenuator ATT2 poor to outfan
Mode voltage VDM.K1 and K2 switch is beaten when the next end, and the interference voltage VL of live wire, the interference voltage VN of zero line deliver to one pair
The zero line live wire handover network (i.e. zero line live wire L/N handover network) that double-pole double throw switch K3 and earth resistance R1 is constituted.Can select
The output selecting zero line live wire handover network is VL or VN, finally by the interference voltage VL or the interference voltage VN of zero line of live wire, altogether
Mode voltage VCM, differential mode voltage VDM export from 3 different output ports, specifically, are made by switching double-point double-throw switch K3
The interference voltage VL of live wire or the interference voltage VN of zero line exports from first output port, is selected by one multichannel of synchronism switching
Selecting the combination (K1 and K2) of switch, make common-mode voltage VCM export from second output port, differential mode voltage VDM is defeated from the 3rd
Go out port output.
Embodiment 2: artificial mains network's circuit of the present invention has the embodiment of single output port.
In conjunction with Fig. 3, if artificial mains network's circuit has 3 output ports, then user's head the to be inserted when of use, very
Inconvenient.Therefore to propose the scheme of a single output port as follows for the present invention.
Switches set includes the first multidiameter option switch K1, the second multidiameter option switch K2, the 3rd multidiameter option switch K3, the
The common port of one multidiameter option switch K1 is started to exchange fire the interference voltage VL of line, and its first gear connects the input of the first power splitter S1,
Its second gear connects the input of the first transformator T1, and its third gear connects the third gear of the 3rd multidiameter option switch K3, its
Fourth speed position meets an earth resistance R1, and the interference voltage VN of the public terminal connecting zero line of the second multidiameter option switch K2, it is first years old
Gear connects another input of the first power splitter S1, and its second gear connects the input of the second transformator T2, and its third gear connects
Another earth resistance R2, its fourth speed position meets the fourth speed position of the 3rd multidiameter option switch K3, the 3rd multidiameter option switch K3
The first gear connect the outfan of the first attenuator ATT1, its second gear connects the outfan of the second attenuator ATT2, and it is public
End is synchronism switching outfan.Wherein, earth resistance R1, R2 is the build-out resistor of 50 Europe impedances.
Additionally, multidiameter option switch (K1, K2, K3) is synchronism switching, when the common port of K1 and the first gear connect, its
He is several too.
In Fig. 3, multidiameter option switch preferentially selects No. 4 synchro switches.
Operation principle: multidiameter option switch (K1 and K2) is responsible for the interference signal VL live wire and the interference signal of zero line
VN delivers in different circuit.
When multidiameter option switch (K1 and K2) is the first gear, VL and VN is delivered to by power splitter S1 and attenuator ATT1
In composition common-mode voltage split circuit.VL and VN, through a power splitter S1, allows VL and VN be added, then through an attenuator
ATT1 output common mode voltage VCM.
When multidiameter option switch (K1 and K2) is the second gear, VL and VN is delivered to by transformator T1, transformator T2, merit
Divide in device S2 and attenuator ATT2 composition differential mode voltage split circuit.Wherein, VL first delivers to a former limit and pays limit Same Name of Ends phase
Same wide-band transformer T1, output remains VL.VN delivers to the wide-band transformer T2 that a former limit is different with paying limit Same Name of Ends, defeated
Go out anti-phase, be negative VN.It is then delivered to a power splitter S2, allows VL and negative VN be added.The most total effect is VL-VN.Finally
Differential mode voltage VDM is exported through an attenuator ATT2.
When multidiameter option switch (K1 and K2) is third gear, for VL output circuit, now multidiameter option switch K2
50 Europe resistance R2 of VN end and a coupling are connected, multidiameter option switch K1 export VL.
When multidiameter option switch (K1 and K2) is fourth speed position, for VN output circuit, now switch K1 is VL end and
50 Europe resistance R1 of individual coupling are connected, multidiameter option switch K2 export VN.
During whole, multidiameter option switch K3 be responsible for the common-mode voltage VCM output, differential mode voltage VDM, live wire dry
Disturb voltage VL, the interference voltage VN of zero line is switched to the output of same output port, finally obtains 4 kinds of electricity at same outfan
Pressure.
The present invention realizes different output ports, if switch combination uses one group 3 by using different switch combinations
When road synchro switch and double-point double-throw switch, then artificial mains network's circuit of the present invention has 3 output ports；If switches set
When closing 3 No. 4 synchro switches of employing, then artificial mains network's circuit of the present invention is single delivery outlet, the when that solution user using
Head to be inserted, very inconvenient problem.Both modes can measure the interference voltage of live wire or zero line simultaneously, it is possible to for electricity
More information is passed through in the rectification of magnetic compatibility, moreover it is possible to provide artificial mains network's electricity of a kind of simple separation common mode differential mode voltage
Road.
Utilize technical scheme, or those skilled in the art is under the inspiration of technical solution of the present invention, design
Go out similar technical scheme, and reach above-mentioned technique effect, all fall into protection scope of the present invention.
Claims (7)
1. artificial mains network's circuit, it is characterised in that: include switches set, the first power splitter, the second power splitter, the first decay
Device, the second attenuator, the first transformator, the second transformator；
The input of described switches set is started to exchange fire the interference voltage of line and the interference voltage of zero line respectively, described first power splitter defeated
Entering end to be connected with switches set respectively, its output termination first attenuator, the input of described second power splitter connects the first change respectively
Depressor and the outfan of the second transformator, its output termination second attenuator, the described first former limit of Transformer Selection and pair limit are same
The wide-band transformer that name end is identical, its input is connected with switches set, the described second former limit of Transformer Selection and pair limit Same Name of Ends
The wide-band transformer differed, its input is connected with switches set, the outfan output common mode voltage of described first attenuator, institute
State the outfan output differential mode voltage of the second attenuator.
Artificial mains network's circuit the most according to claim 1, it is characterised in that described switches set includes the first multichannel choosing
Selecting switch, the second multidiameter option switch, double-point double-throw switch, the common port of described first multidiameter option switch is started to exchange fire the interference of line
Voltage, the input of upper termination first power splitter of described first multidiameter option switch, wherein position terminates the first transformator
Input, its next end is connected with upper end outfan and the lower end input of described double-point double-throw switch, described second multichannel choosing
Select the interference voltage of the public terminal connecting zero line of switch, another of upper termination first power splitter of described second multidiameter option switch
Input, wherein position terminates the input of the second transformator, the upper end input of its next end and described double-point double-throw switch and
Lower end outfan connects, one earth resistance composition zero line live wire switching net of the common port input termination of described double-point double-throw switch
Network, is exported neutral voltage or hot voltage by the common port outfan of double-point double-throw switch.
Artificial mains network's circuit the most according to claim 2, it is characterised in that described multidiameter option switch selects 3 tunnels
Synchro switch.
Artificial mains network's circuit the most according to claim 1, it is characterised in that described switches set includes the first multichannel
Selecting switch, the second multidiameter option switch, the 3rd multidiameter option switch, the common port of described first multidiameter option switch is started to exchange fire line
Interference voltage, its first gear connects the input of the first power splitter, and its second gear connects the input of the first transformator, and it is years old
Three gears connect the third gear of the 3rd multidiameter option switch, and its fourth speed position connects an earth resistance, described second multi-path choice
The interference voltage of the public terminal connecting zero line of switch, its first gear connects another input of the first power splitter, and its second gear connects
The input of the second transformator, its third gear connects another earth resistance, and its fourth speed position connects the 3rd multidiameter option switch
Fourth speed position, the first gear of described 3rd multidiameter option switch connects the outfan of the first attenuator, and its second gear connects second
The outfan of attenuator, its common port is synchronism switching outfan.
Artificial mains network's circuit the most according to claim 4, it is characterised in that described multidiameter option switch selects 4 tunnels
Synchro switch.
6. according to the artificial mains network's circuit described in claim 2 or 4, it is characterised in that described earth resistance all selects 50
Europe resistance.
Artificial mains network's circuit the most according to claim 1, it is characterised in that described switches set include multiple electronics or
The multidiameter option switch of machinery or relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725831.XU CN205792236U (en) | 2016-07-11 | 2016-07-11 | Artificial mains network's circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725831.XU CN205792236U (en) | 2016-07-11 | 2016-07-11 | Artificial mains network's circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205792236U true CN205792236U (en) | 2016-12-07 |
Family
ID=58124708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620725831.XU Withdrawn - After Issue CN205792236U (en) | 2016-07-11 | 2016-07-11 | Artificial mains network's circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205792236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100316A (en) * | 2016-07-11 | 2016-11-09 | 深圳市知用电子有限公司 | Artificial mains network's circuit |
-
2016
- 2016-07-11 CN CN201620725831.XU patent/CN205792236U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100316A (en) * | 2016-07-11 | 2016-11-09 | 深圳市知用电子有限公司 | Artificial mains network's circuit |
| CN106100316B (en) * | 2016-07-11 | 2019-11-15 | 深圳市知用电子有限公司 | Artificial mains network's circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20191115 |
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| AV01 | Patent right actively abandoned |