CN208904881U - A kind of DC power supply for electromagnetic compatibility test - Google Patents
A kind of DC power supply for electromagnetic compatibility test Download PDFInfo
- Publication number
- CN208904881U CN208904881U CN201721652271.0U CN201721652271U CN208904881U CN 208904881 U CN208904881 U CN 208904881U CN 201721652271 U CN201721652271 U CN 201721652271U CN 208904881 U CN208904881 U CN 208904881U
- Authority
- CN
- China
- Prior art keywords
- circuit
- feedthrough capacitor
- screening arrangement
- shielding device
- filter circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides a kind of DC power supply for electromagnetic compatibility test, including including switching power circuit, first filter circuit, DC/DC conversion circuit, second filter circuit, LDO circuit, first feedthrough capacitor, second feedthrough capacitor, first screening arrangement, and secondary shielding device, wherein, the switching power circuit and first filter circuit are placed in first screening arrangement, the DC/DC conversion circuit and second filter circuit are placed in the secondary shielding device, a kind of projection arrangement for electromagnetic compatibility provided by the utility model can be used in electromagnetic compatibility test, it is easy for installation, electromagnetic interference degree is low, anti-electromagnetic interference capability is strong, heat radiation is few, structure is simple, long service life.
Description
Technical field
The utility model relates to electromagnetic compatibility test field, in particular to a kind of direct current for electromagnetic compatibility test
Source.
Background technique
Electro Magnetic Compatibility (EMC) refers to that equipment or system meet the requirements operation not in its environment in its electromagnetic environment
Any equipment generate the ability of intolerable electromagnetic interference.Therefore, EMC includes the requirement of two aspects: on the one hand being referred to
Equipment is in normal course of operation to the electromagnetic interference of place environment generation no more than certain limit value；It on the other hand is finger device
Tool has a degree of immunity to interference, i.e. electromagnetic susceptibility to electromagnetic interference present in the environment of place.
DC power supply is the device that constant voltage electric current is formed in holding circuit, and DC power supply has positive and negative two electrodes, just
The current potential of pole is high, and the current potential of cathode is low, after two electrodes and circuit communication, can make to maintain constant electricity between circuit both ends
Potential difference, to be formed in external circuit by the electric current of anode to cathode.DC power supply is a kind of energy conversion device, it is other
The energy of form is converted to electric energy supply circuit, to maintain the steady of electric current to flow.But existing continuous-current plant is whole
Stream device and power conversion circuit would generally generate biggish power supply disturbance, be difficult to apply to electromagnetic compatibility test field.Thus need
Want that a kind of electromagnetic interference is low, heat radiation is few and can be used for the continuous-current plant of electromagnetic compatibility test.
Utility model content
The purpose of the utility model is to overcome prior art deficiencies, provide a kind of direct current for electromagnetic compatibility test
Source has the characteristics that electromagnetic interference is low, heat radiation is few, structure is simple, the service life is long and at low cost.
The following technical solution is employed to achieve the above object for the utility model:
The utility model provides a kind of DC power supply for electromagnetic compatibility test, one kind provided by the utility model
DC power supply for electromagnetic compatibility test includes switching power circuit, the first filter circuit, DC/DC conversion circuit, the second filter
Wave circuit, LDO circuit, the first feedthrough capacitor, the second feedthrough capacitor, the first screening arrangement and secondary shielding device；
Wherein, the switching power circuit is connected with first filter circuit, the switching power circuit and described the
One filter circuit is arranged in first screening arrangement；
A through-hole is provided on the side panel of first screening arrangement, the through-hole is surrounded by third shielding dress
It sets, first feedthrough capacitor is set in third screening arrangement, and first feedthrough capacitor is connected across on the first screening arrangement,
The input terminal of first feedthrough capacitor is connected with the output end of first filter circuit, the output of first feedthrough capacitor
End is connected with the input terminal of DC/DC conversion circuit, the third screening arrangement and first feedthrough capacitor and described first
Screening arrangement contact, three forms continuous conductor, to keep the conducting continuity of first screening arrangement；
The DC/DC conversion circuit is connected with the second filter circuit, the DC/DC conversion circuit and second filtered electrical
Road is arranged in the secondary shielding device；
A through-hole is provided on the side panel of the secondary shielding device, the through-hole is surrounded by the 4th shielding dress
It sets, second feedthrough capacitor is set in the 4th screening arrangement, and second feedthrough capacitor is connected across second screen
It covers on device, the input terminal of second feedthrough capacitor is connected with the output end of second filter circuit, second punching
The output end of capacitor is connected with the input terminal of the LDO circuit, the 4th screening arrangement and second feedthrough capacitor and
The secondary shielding device contact, three forms continuous conductor, described to keep the conducting continuity of the secondary shielding device
The output end of LDO circuit is connect with electrical equipment.
In another embodiment of the utility model, a kind of direct current for electromagnetic compatibility test provided by the utility model
Power supply includes switching power circuit, the first filter circuit, DC/DC conversion circuit, the second filter circuit, LDO circuit, the first punching
Capacitor, the second feedthrough capacitor, the first screening arrangement and secondary shielding device；
Wherein, the switching power circuit is connected with first filter circuit, the switching power circuit and described the
One filter circuit is arranged in first screening arrangement；A through-hole, institute are provided on the side panel of first screening arrangement
That states through-hole is surrounded by third screening arrangement, and first feedthrough capacitor is set in the third screening arrangement, and described
One feedthrough capacitor is connected across on first screening arrangement, the input terminal of first feedthrough capacitor and first filter circuit
Output end be connected, the output end of first feedthrough capacitor is connected with the input terminal of the DC/DC conversion circuit, the third
Screening arrangement is contacted with first feedthrough capacitor and first screening arrangement, and three forms continuous conductor, to keep
State the conducting continuity of the first screening arrangement；
The DC/DC conversion circuit is connected with second filter circuit, second filter circuit and the LDO circuit
It is connected, the DC/DC conversion circuit, second filter circuit, the LDO circuit are arranged in the secondary shielding device；
A through-hole is provided on the side panel of the secondary shielding device, the through-hole is surrounded by the 4th shielding dress
It sets, second feedthrough capacitor is set in the 4th screening arrangement, and second feedthrough capacitor is connected across second screen
It covers on device, the input terminal of second feedthrough capacitor is connected with the output end of the LDO circuit, second feedthrough capacitor
Output end is connected with the input terminal of electrical equipment, the 4th screening arrangement and second feedthrough capacitor and second screen
Device contact is covered, three forms continuous conductor, to keep the conducting continuity of the secondary shielding device.
In an embodiment of the utility model, the output end of the LDO circuit is connected with third filter circuit.
Compared with prior art, the utility model has the beneficial effects that:
First, a kind of DC power supply for electromagnetic compatibility test provided by the utility model, passes through reasonable module
Layout and shielding measure guarantee that DC power supply will not cause additional electromagnetic interference to anechoic chamber, and can bear in darkroom
High-intensitive electromagnetic radiation environment；
Second, a kind of DC power supply for for electromagnetic compatibility test provided by the utility model, has output frequency
The features such as rate good compatibility, small in size, light-weight, high conversion efficiency, electromagnetic interference be low, strong environmental adaptability.
Detailed description of the invention
Fig. 1 is a kind of circuit module frame of DC power supply for electromagnetic compatibility test of an embodiment of the present invention
Figure；
Fig. 2 is a kind of DC power supply circuit module frame for electromagnetic compatibility test of another embodiment of the utility model
Figure；
Wherein: (1) switching power circuit, (2) first filter circuits, (3) DC/DC conversion circuit, (4) second filtered electricals
Road, (5) LDO circuit, (6) first feedthrough capacitors, (7) second feedthrough capacitors, (8) first screening arrangements, (9) secondary shielding dress
It sets, (81) third screening arrangement, (91) the 4th screening arrangements.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described further the utility model, illustrative examples therein
And explanation is only used to explain the utility model, but is not intended to limit the scope of the present invention
It should be noted that in the present invention, term " first ", " second " are used for description purposes only, and cannot manage
Solution is indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
In an embodiment of the utility model, as shown in Figure 1, it is provided by the utility model a kind of for electromagnetic compatibility survey
The DC power supply of examination includes switching power circuit 1, the first filter circuit 2, DC/DC conversion circuit 3, the second filter circuit 4, LDO
Circuit 5, the first feedthrough capacitor 6, the second feedthrough capacitor 7, the first screening arrangement 8 and secondary shielding device 9；
Wherein, switching power circuit 1 is connected with the first filter circuit 2, and switching power circuit 1 is set with the first filter circuit 2
It sets in the first screening arrangement 8；
It is provided with a through-hole on the side panel of first screening arrangement 8, which is surrounded by third screening arrangement 81, and
One feedthrough capacitor 6 is set in third screening arrangement 81, and the first feedthrough capacitor is connected across on the first screening arrangement 8, the first punching
The input terminal of capacitor 6 is connected with the output end of the first filter circuit 2, the output end and DC/DC conversion circuit of the first feedthrough capacitor 6
3 input terminal is connected, and third screening arrangement 81 is contacted with the first feedthrough capacitor 6 and the first screening arrangement 8, and three's composition is continuous
Conductor, to keep the conducting continuity of the first screening arrangement 8；
DC/DC conversion circuit 3 is connected with the second filter circuit 4, and DC/DC conversion circuit 3 and the setting of the second filter circuit 4 exist
In secondary shielding device 9；
It is provided with a through-hole on the side panel of secondary shielding device 9, which is surrounded by the 4th screening arrangement 91, and
Two feedthrough capacitors 7 are set in the 4th screening arrangement 91, and the second feedthrough capacitor is connected across on secondary shielding device 9, the second punching
The input terminal of capacitor 7 is connected with the output end of the second filter circuit, the input of the output end and LDO circuit 5 of the second feedthrough capacitor 7
End is connected, and the 4th screening arrangement 91 is contacted with the second feedthrough capacitor 7 and secondary shielding device 9, and three forms continuous conductor, with
The conducting continuity of secondary shielding device 9 is kept, the output end of LDO circuit 5 is connect with electrical equipment.
In an alternative embodiment of the invention, as shown in Fig. 2, it is provided by the utility model a kind of for electromagnetic compatibility test
DC power supply include switching power circuit 1, the first filter circuit 2, DC/DC conversion circuit 3, the second filter circuit 4, LDO electricity
Road 5, the first feedthrough capacitor 6, the second feedthrough capacitor 7, the first screening arrangement 8 and secondary shielding device 9；
Wherein, switching power circuit 1 is connected with the first filter circuit 2, and switching power circuit 1 is set with the first filter circuit 2
It sets in the first screening arrangement 8；A through-hole is provided on the side panel of first screening arrangement 8, which is surrounded by third
Screening arrangement 81, the first feedthrough capacitor 6 are set in third screening arrangement 81, and the first feedthrough capacitor 6 is connected across the first shielding dress
It sets on 8, the input terminal of the first feedthrough capacitor 6 is connected with the output end of the first filter circuit 2, the output end of the first feedthrough capacitor 6
It is connected with the input terminal of DC/DC conversion circuit 3, third screening arrangement 81 connects with the first feedthrough capacitor 6 and the first screening arrangement 8
Touching, three form continuous conductor, to keep the conducting continuity of the first screening arrangement 8；
DC/DC conversion circuit 3 is connected with the second filter circuit 4, and the second filter circuit 4 is connected with LDO circuit 5, and DC/DC turns
Circuit 3, the second filter circuit 4, LDO circuit 5 is changed to be arranged in secondary shielding device 9；
It is provided with a through-hole on the side panel of secondary shielding device 9, which is surrounded by the 4th screening arrangement 91, and
Two feedthrough capacitors 7 are set in the 4th screening arrangement 91, and the second feedthrough capacitor is connected across on secondary shielding device 9, the second punching
The input terminal of capacitor 7 is connected with the output end of LDO circuit 5, the output end and the input terminal phase of electrical equipment of the second feedthrough capacitor 7
Even, the 4th screening arrangement 91 is contacted with the second feedthrough capacitor 7 and secondary shielding device 9, and three forms continuous conductor, to keep
The conducting continuity of secondary shielding device 9.
In an embodiment of the utility model, the output end of LDO circuit 5 is connected with third filter circuit.
Obviously, above-described embodiment is used for the purpose of clearer expression technical solutions of the utility model example, and
The non-restriction to the utility model embodiment.It to those skilled in the art, on the basis of the above description can be with
It makes other variations or changes in different ways, without departing from the concept of the premise utility, these belong to practical
Novel protection scope.Therefore the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (3)
1. a kind of DC power supply for electromagnetic compatibility test, which is characterized in that including switching power circuit, the first filtered electrical
Road, DC/DC conversion circuit, the second filter circuit, LDO circuit, the first feedthrough capacitor, the second feedthrough capacitor, the first screening arrangement,
And secondary shielding device；
Wherein, the switching power circuit is connected with first filter circuit, the switching power circuit and first filter
Wave circuit is arranged in first screening arrangement；
A through-hole is provided on the side panel of first screening arrangement, the through-hole is surrounded by third screening arrangement, institute
It states the first feedthrough capacitor to be set in third screening arrangement, first feedthrough capacitor is connected across on the first screening arrangement, described
The input terminal of first feedthrough capacitor is connected with the output end of first filter circuit, the output end of first feedthrough capacitor with
The input terminal of DC/DC conversion circuit is connected, the third screening arrangement and first feedthrough capacitor and first shielding
Device contact, three forms continuous conductor, to keep the conducting continuity of first screening arrangement；
The DC/DC conversion circuit is connected with the second filter circuit, and the DC/DC conversion circuit is set with second filter circuit
It sets in the secondary shielding device；
A through-hole is provided on the side panel of the secondary shielding device, the through-hole is surrounded by the 4th screening arrangement, institute
It states the second feedthrough capacitor to be set in the 4th screening arrangement, second feedthrough capacitor is connected across the secondary shielding device
On, the input terminal of second feedthrough capacitor is connected with the output end of second filter circuit, second feedthrough capacitor
Output end is connected with the input terminal of the LDO circuit, the 4th screening arrangement and second feedthrough capacitor and described the
The contact of two screening arrangements, three form continuous conductor, to keep the conducting continuity of the secondary shielding device, the LDO electricity
The output end on road is connect with electrical equipment.
2. a kind of DC power supply for electromagnetic compatibility test as described in claim 1, which is characterized in that the LDO circuit
Output end be connected with third filter circuit.
3. a kind of DC power supply for electromagnetic compatibility test characterized by comprising switching power circuit, the first filtered electrical
Road, DC/DC conversion circuit, the second filter circuit, LDO circuit, the first feedthrough capacitor, the second feedthrough capacitor, the first screening arrangement,
And secondary shielding device；
Wherein, the switching power circuit is connected with first filter circuit, the switching power circuit and first filter
Wave circuit is arranged in first screening arrangement；A through-hole is provided on the side panel of first screening arrangement, it is described logical
Hole is surrounded by third screening arrangement, and first feedthrough capacitor is set in the third screening arrangement, and described first wears
Electrocardio appearance is connected across on first screening arrangement, and the input terminal of first feedthrough capacitor is defeated with first filter circuit
Outlet is connected, and the output end of first feedthrough capacitor is connected with the input terminal of the DC/DC conversion circuit, the third shielding
Device is contacted with first feedthrough capacitor and first screening arrangement, and three forms continuous conductor, to keep described the
The conducting continuity of one screening arrangement；
The DC/DC conversion circuit is connected with second filter circuit, second filter circuit and the LDO circuit phase
Even, the DC/DC conversion circuit, second filter circuit, the LDO circuit are arranged in the secondary shielding device；Institute
It states and is provided with a through-hole on the side panel of secondary shielding device, the through-hole is surrounded by the 4th screening arrangement, and described second
Feedthrough capacitor is set in the 4th screening arrangement, and second feedthrough capacitor is connected across on the secondary shielding device, institute
The input terminal for stating the second feedthrough capacitor is connected with the output end of the LDO circuit, the output end and use of second feedthrough capacitor
The input terminal of electric equipment is connected, and the 4th screening arrangement connects with second feedthrough capacitor and the secondary shielding device
Touching, three forms continuous conductor, to keep the conducting continuity of the secondary shielding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721652271.0U CN208904881U (en) | 2017-12-01 | 2017-12-01 | A kind of DC power supply for electromagnetic compatibility test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721652271.0U CN208904881U (en) | 2017-12-01 | 2017-12-01 | A kind of DC power supply for electromagnetic compatibility test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208904881U true CN208904881U (en) | 2019-05-24 |
Family
ID=66564803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721652271.0U Active CN208904881U (en) | 2017-12-01 | 2017-12-01 | A kind of DC power supply for electromagnetic compatibility test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208904881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932534A (en) * | 2019-11-29 | 2020-03-27 | 中国电子科技集团公司第十三研究所 | Spurious suppression device, frequency source and electronic equipment |
-
2017
- 2017-12-01 CN CN201721652271.0U patent/CN208904881U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932534A (en) * | 2019-11-29 | 2020-03-27 | 中国电子科技集团公司第十三研究所 | Spurious suppression device, frequency source and electronic equipment |
| CN110932534B (en) * | 2019-11-29 | 2021-06-15 | 中国电子科技集团公司第十三研究所 | Spurious suppression device, frequency source and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208904881U (en) | A kind of DC power supply for electromagnetic compatibility test | |
| CN111487512A (en) | VFTO and partial discharge monitoring system and method for GIS transformer substation | |
| CN203630241U (en) | All-in-one device for testing power frequency parameters and switching test line for high-voltage power transmission line | |
| CN115940438A (en) | Back plate type power supply system for movable power utilization terminal | |
| CN202929099U (en) | Bus shielding layer potential monitoring apparatus | |
| CN204462210U (en) | based on the damped oscillation generator of electronic switch | |
| CN204794664U (en) | Electromagnetic compatibility wave filter | |
| CN103852629B (en) | A kind of bus shield layer potential monitoring system | |
| CN202004323U (en) | Shield grounding circuit for secondary circuit | |
| CN102820663A (en) | Dynamic reactive power compensation and harmonic treatment complete equipment | |
| CN202649289U (en) | Charge indicator capable of acquiring busbar voltage signal of hydroelectric generator | |
| CN201594791U (en) | Power panel EMC filter circuit and TV adopting same | |
| CN207588703U (en) | A kind of DC power supply for electromagnetic compatibility test | |
| CN205647277U (en) | Micropower is got can transformer device | |
| CN209375479U (en) | A kind of power supply adaptor of novel replaceable | |
| CN210092878U (en) | Dynamic harmonic treatment system for optimizing power quality | |
| CN105977672A (en) | Connector and distribution method of devices in connector | |
| CN203616387U (en) | Single-phase electric energy meter with special-purpose power supply | |
| CN217063583U (en) | Electromagnetic reinforced AC-DC adapter | |
| CN104459404B (en) | Charger performance parameter testing system and tool | |
| CN218216133U (en) | Welding robot's control power supply electric cabinet circuit | |
| CN213817243U (en) | Railway signal power supply isolation device | |
| CN208705422U (en) | A kind of leakage current testing analysis diagnostic device | |
| CN213817552U (en) | DC voltage-stabilized power supply cabinet box | |
| CN203761261U (en) | Anti-radiation switching mode power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |