CN207588703U - A kind of DC power supply for electromagnetic compatibility test - Google Patents
A kind of DC power supply for electromagnetic compatibility test Download PDFInfo
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- CN207588703U CN207588703U CN201721652256.6U CN201721652256U CN207588703U CN 207588703 U CN207588703 U CN 207588703U CN 201721652256 U CN201721652256 U CN 201721652256U CN 207588703 U CN207588703 U CN 207588703U
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Abstract
The utility model provides a kind of DC power supply for electromagnetic compatibility test, including switch power module, at least one DCDC circuits and at least one LDO circuit；By a kind of DC power supply for electromagnetic compatibility test provided by the utility model, user can voluntarily select the direct current of oneself needs to deliver the transformation mode of stream, flexibility ratio higher；And user can also voluntarily select the size of output voltage by plugging corresponding DCDC circuits or LDO circuit, and accommodation is wider.
Description
Technical field
The utility model is related to electromagnetic compatibility test fields, more particularly to a kind of direct current for electromagnetic compatibility test
Source.
Background technology
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 refer to
Equipment is in normal course of operation to the electromagnetic interference of place environment generation no more than certain limit value；On the other hand it 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, so as to form the electric current by anode to cathode in external circuit.DC power supply is a kind of energy conversion device, it is other
The energy of form is converted to electric energy supply circuit, the steady of electric current to be maintained to flow.And in the prior art, DC power supply is realized
Filtering alternating voltage is exported mainly by two ways, and one kind is realized by DCDC circuits, another then be real by LDO circuit
It is existing；In both technologies, the voltage of DCDC circuit outputs can be higher than LDO circuit, and occupied space smaller, LDO circuit to
Improving voltage output can only realize in a manner that multiple LDO circuits are connected, but DCDC circuits are caused during the work time
Electronic interferences it is far higher than LDO circuit, shielding case need to additionally be configured, and LDO circuit then needs not worry about and will appear this ask
Topic, two kinds of technical implementation way respectively have oneself feature；In addition DC power supply on the market generally can not allow client independently to select institute
The size of output voltage is needed, that client can be allowed independently to select again is defeated so designing a the characteristics of combining two kinds of technical approach
Go out the DC power supply of voltage swing just seem very it is necessary to.
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 conversion regime is more, output voltage is adjustable, Modular Structure Design is simple, long lifespan and at low cost.
The utility model uses following technical solution to achieve the above object：
The utility model provides a kind of DC power supply for electromagnetic compatibility test, including the first shroud module and
The switch power module being arranged in first shroud module, at least one voltage translation slot and with being inserted into the electricity
Press the voltage transformation module on translation slot；
Wherein, the voltage transformation module includes secondary shielding module and the electricity being arranged in the secondary shielding module
Voltage conversion circuit；
The voltage output end of the switch power module is connected with the voltage input end of the voltage translation slot, the electricity
The voltage output end of pressure translation slot is connected with the voltage input end of the voltage conversion circuit, the electricity of the voltage transformation module
Pressure output terminal is connected with load；
Wherein, the voltage conversion circuit includes at least one DCDC circuits and/or at least one LDO circuit.
In one embodiment of the utility model, the first shielding case, at least two second are included in first shroud module
Shielding case and the feedthrough capacitor being arranged in secondary shielding shell；
The secondary shielding shell is connected across on the side of first shielding case, and the feedthrough capacitor is connected on the switch
On the voltage output end of power module.
In one embodiment of the utility model, the secondary shielding module includes third shielding case, at least two the 4th screens
The feedthrough capacitor for covering shell and being arranged in the 4th shielding case；
4th shielding case is connected across on the side of the third shielding case, and the feedthrough capacitor is connected on voltage conversion
On the voltage output end of module.
The beneficial effects of the utility model：Pass through a kind of direct current for electromagnetic compatibility test provided by the utility model
Power supply, user can voluntarily select the direct current of oneself needs to deliver the transformation mode of stream, flexibility ratio higher；And user can also pass through
Corresponding DCDC circuits or LDO circuit are plugged voluntarily to select the size of output voltage, accommodation is wider.
Description of the drawings
Fig. 1 is a kind of circuit theory frame of DC power supply for electromagnetic compatibility test of one embodiment of the utility model
Figure.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further the utility model, illustrative examples therein
And explanation is only used for explaining the utility model, but be not intended to limit the scope of the present invention
The utility model provides a kind of DC power supply for electromagnetic compatibility test, as shown in Figure 1, including the first shielding
Module and the switch power module 200 being arranged in first shroud module, at least one voltage translation slot 300 and insert
Voltage transformation module on the voltage translation slot；
Wherein, the voltage transformation module includes secondary shielding module and the electricity being arranged in the secondary shielding module
Voltage conversion circuit；
The voltage output end of switch power module 100 is connected with the voltage input end of voltage translation slot 200, voltage conversion
The voltage output end of slot 200 is connected with the voltage input end of the voltage conversion circuit, the voltage of the voltage transformation module
Output terminal is connected with load；
Wherein, the voltage conversion circuit includes at least one DC-DC circuit 300 and/or at least one LDO circuit 400.
In one embodiment of the utility model, as shown in Figure 1, first shroud module in include the first shielding case 500,
At least two secondary shielding shells 600 and the feedthrough capacitor 700 being arranged in secondary shielding shell 600；
Secondary shielding shell 600 is connected across on the side of first shielding case 500, and feedthrough capacitor 700 is connected on switch electricity
On the voltage output end of source module.
In one embodiment of the utility model, as shown in Figure 1, the secondary shielding module includes third shielding case 800, extremely
Few two the 4th shielding cases 900 and the feedthrough capacitor 700 being arranged in the 4th shielding case 900；
4th shielding case 900 is connected across on the side of the third shielding case 800, and feedthrough capacitor 700 is connected on voltage and turns
On the voltage output end for changing the mold block.
In one concrete application scene of the utility model, DC power supply provided by the utility model is arranged on anechoic chamber,
Interior, user can voluntarily select suitable voltage to convert when carrying out electromagnetic compatibility test according to the power demands of sample
It is used in the voltage translation slot that module is inserted into DC power supply provided by the utility model；Such as, sample needs to use
The DC-voltage supply of 5V and 12V, at this time tester can select the inserting of corresponding voltage transformation module according to demand to direct current
On the translation slot of power supply, DC-DC voltage transformation modules and export the LDO voltage transformation modules for being 12V that such as output is 5V,
The output voltage of DC power supply provided by the utility model is made to meet the needs of sample.
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 this practicality
Novel protection domain.Therefore the protection domain of the utility model patent should be determined by the appended claims.
Claims (3)
1. a kind of DC power supply for electromagnetic compatibility test, which is characterized in that including the first shroud module and be arranged on institute
State the switch power module in the first shroud module, at least one voltage translation slot and with being inserted into the voltage conversion plug
Voltage transformation module on slot；
Wherein, the voltage transformation module includes secondary shielding module and the voltage being arranged in the secondary shielding module turns
Change circuit；
The voltage output end of the switch power module is connected with the voltage input end of the voltage translation slot, and the voltage turns
The voltage output end for inserting slot is connected with the voltage input end of the voltage conversion circuit, and the voltage of the voltage transformation module is defeated
Outlet is connected with load,
Wherein, the voltage conversion circuit includes at least one DCDC circuits and/or at least one LDO circuit.
A kind of 2. DC power supply for electromagnetic compatibility test as described in claim 1, which is characterized in that first shielding
Include the first shielding case, at least two secondary shielding shells and the feedthrough capacitor being arranged in secondary shielding shell in module；
The secondary shielding shell is connected across on the side of first shielding case, and the feedthrough capacitor is connected on the Switching Power Supply
On the voltage output end of module.
A kind of 3. DC power supply for electromagnetic compatibility test as described in claim 1, which is characterized in that the secondary shielding
Module includes third shielding case, at least two the 4th shielding cases and the feedthrough capacitor being arranged in the 4th shielding case；
4th shielding case is connected across on the side of the third shielding case, and the feedthrough capacitor is connected on voltage transformation module
Voltage output end on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721652256.6U CN207588703U (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 |
|---|---|---|---|
| CN201721652256.6U CN207588703U (en) | 2017-12-01 | 2017-12-01 | A kind of DC power supply for electromagnetic compatibility test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207588703U true CN207588703U (en) | 2018-07-06 |
Family
ID=62735025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721652256.6U Active CN207588703U (en) | 2017-12-01 | 2017-12-01 | A kind of DC power supply for electromagnetic compatibility test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207588703U (en) |
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2017
- 2017-12-01 CN CN201721652256.6U patent/CN207588703U/en active Active
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