CN202231437U - Single-phase power supply filter easy to change impedance matching - Google Patents
Single-phase power supply filter easy to change impedance matching Download PDFInfo
- Publication number
- CN202231437U CN202231437U CN2011203789872U CN201120378987U CN202231437U CN 202231437 U CN202231437 U CN 202231437U CN 2011203789872 U CN2011203789872 U CN 2011203789872U CN 201120378987 U CN201120378987 U CN 201120378987U CN 202231437 U CN202231437 U CN 202231437U
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- China
- Prior art keywords
- inductance
- capacitor
- electric capacity
- inductor
- impedance matching
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- 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.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model discloses a single-phase power supply filter easy to change impedance matching, which comprises a casing, a wiring terminal, a circuit board and a filter element. The filter element comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first inductor, a second inductor, a third inductor, a fourth inductor and a discharge resistor, one end of the first capacitor is connected between the first inductor and the second inductor, and the other end of the first capacitor is connected between the third inductor and the fourth inductor. The second capacitor is in parallel connection with the first capacitor after being connected with the third capacitor in series, the fourth capacitor is connected between a live line on the side of a load and a zero line on the side of the load after being connected with the fifth capacitor in series, and the discharge resistor is in parallel connection with the first capacitor. The single-phase power supply filter easy to change the impedance matching has the advantages of being reasonable in structural design, high in safety, good in electromagnetic compatibility, capable of meeting requirements of devices for different impedance and the like.
Description
Technical field
The utility model relates to a kind of power-supply filter, relates in particular to the single phase poaer supply filter of being convenient to change impedance matching that a kind of ability satisfies the different impedance requirements that can satisfy equipment.
Background technology
The power supply electromagnetic interface filter is a passive network, has reciprocity, promptly no matter is connected on power end to load, or load end, all is fine.In practical application, reach the purpose that suppresses the EMI signal effectively, the source impedance of the EMI signal that must will connect according to the filter two ends rationally is connected with load impedance.The power supply electromagnetic interface filter should be followed the input/output terminal principle of mismatch to greatest extent, to obtain optimal inhibition effect.When at present like product offered the user, it is effective that the panesthesia filter effect does not have that supplier provides, and the product that offers the user is dumb in the selection of filter impedance coupling.
The utility model content
The purpose of the utility model be provide in order to address the above problem a kind of reasonable in design, safe, Electro Magnetic Compatibility good, the single phase poaer supply filter of being convenient to change impedance matching of flexible and changeable filter impedance coupling is provided for the user
The utility model is realized through following technical scheme:
A kind of single phase poaer supply filter of being convenient to change impedance matching; Comprise housing, binding post, circuit board and filter element; Said filter element comprises first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, first inductance, second inductance, the 3rd inductance, the 4th inductance and discharge resistance; One end of said first inductance is connected with the mains side live wire; The other end of said first inductance is connected with the load-side live wire with said second inductance series connection back; One end of said the 3rd inductance is connected with the mains side zero line, and the other end of said the 3rd inductance is connected with the load-side zero line with said the 4th inductance series connection back, and an end of said first electric capacity is connected between said first inductance and said second inductance; The other end of said first electric capacity is between said the 3rd inductance and said the 4th inductance; Said second electric capacity is connected the back and is connected in parallel with said first electric capacity with said the 3rd capacitances in series, said the 4th electric capacity and said the 5th capacitances in series are connected between said load-side live wire and the load-side zero line after connecting, and said discharge resistance and said first electric capacity are connected in parallel.
As preferably, said insulator is the ceramic post sintering insulator.
As preferably, lead to said outside by the installation contact pin that is provided with on the said circuit board and form said binding post.
The beneficial effect of the utility model is:
The utility model is optimized the power-supply filter internal circuit, and the user can input or output end terminating resistor or electric capacity at filter according to the impedance situation that inputs or outputs of self in the circuit after optimization, makes filter effect reach best.The utlity model has reasonable in design, safe, Electro Magnetic Compatibility good, can satisfy the advantages such as demand of the different impedances of equipment.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the vertical view of the utility model;
Fig. 3 is the circuit diagram of the utility model;
Among the figure: 1-circuit board, 2-shell, 3-cover plate, 4-binding post, 5-insulator.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify:
To shown in Figure 3, the utility model is convenient to change the single phase poaer supply filter of impedance matching, comprises housing 2, binding post 4, circuit board 1 and filter element like Fig. 1, and said filter element comprises first capacitor C
1, second capacitor C
2, the 3rd capacitor C
3, the 4th capacitor C
4, the 5th capacitor C
5, first inductance L
1, second inductance L
2, the 3rd inductance L
3, the 4th inductance L
4With discharge resistance R, said first inductance L
1An end be connected said first inductance L with the mains side live wire
1The other end and said second inductance L
2The series connection back is connected said the 3rd inductance L with the load-side live wire
3An end be connected said the 3rd inductance L with the mains side zero line
3The other end and said the 4th inductance L
4The series connection back is connected said first capacitor C with the load-side zero line
1An end be connected in said first inductance L
1With said second inductance L
2Between, said first capacitor C
1The other end in said the 3rd inductance L
3With said the 4th inductance L
4Between, said second capacitor C
2With said the 3rd capacitor C
3Back and said first capacitor C are connected in series
1Be connected in parallel said the 4th capacitor C
4With said the 5th capacitor C
5Be connected between said load-side live wire and the load-side zero line said discharge resistance R and said first capacitor C after being connected in series
1Be connected in parallel.Insulator 5 is the ceramic post sintering insulator.Lead to said outside by the installation contact pin that is provided with on the circuit board 1 and form said binding post 4.
Only under the situation of the serious mismatch of impedance, it is best that its filter effect just can reach for filter.The user can at filter I/O end terminating resistor/electric capacity, be that filter effect reaches the best according to the I/O impedance situation of self.Certain airborne computer adopts other power-supply filter, when carrying out electromagnetic compatibility test; Its conduction emission (CE102) always can not reach standard-required, after using this filter, still can not reach requirement; Through inspection; Be because the problem of impedance matching, at the input of filter and connect a resistance, problem is solved.
The above preferred enforcement that is merely the utility model that discloses can not limit the claim scope of the utility model certainly with this, so according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (3)
1. a single phase poaer supply filter of being convenient to change impedance matching comprises housing, binding post, circuit board and filter element, it is characterized in that: said filter element comprises the first electric capacity (C
1), the second electric capacity (C
2), the 3rd electric capacity (C
3), the 4th electric capacity (C
4), the 5th electric capacity (C
5), the first inductance (L
1), the second inductance (L
2), the 3rd inductance (L
3), the 4th inductance (L
4) and discharge resistance (R), the said first inductance (L
1) an end be connected the said first inductance (L with the mains side live wire
1) the other end and the said second inductance (L
2) connecting then is connected said the 3rd inductance (L with the load-side live wire
3) an end be connected said the 3rd inductance (L with the mains side zero line
3) the other end and said the 4th inductance (L
4) connecting then is connected the said first electric capacity (C with the load-side zero line
1) an end be connected in the said first inductance (L
1) and the said second inductance (L
2) between, the said first electric capacity (C
1) the other end in said the 3rd inductance (L
3) and said the 4th inductance (L
4) between, the said second electric capacity (C
2) and said the 3rd electric capacity (C
3) back and the said first electric capacity (C are connected in series
1) be connected in parallel said the 4th electric capacity (C
4) and said the 5th electric capacity (C
5) be connected between said load-side live wire and the load-side zero line said discharge resistance (R) and the said first electric capacity (C after being connected in series
1) be connected in parallel.
2. the single phase poaer supply filter of being convenient to change impedance matching according to claim 1 is characterized in that: said insulator is the ceramic post sintering insulator.
3. the single phase poaer supply filter of being convenient to change impedance matching according to claim 1 is characterized in that: lead to said outside by the installation contact pin that is provided with on the said circuit board and form said binding post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203789872U CN202231437U (en) | 2011-09-28 | 2011-09-28 | Single-phase power supply filter easy to change impedance matching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203789872U CN202231437U (en) | 2011-09-28 | 2011-09-28 | Single-phase power supply filter easy to change impedance matching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231437U true CN202231437U (en) | 2012-05-23 |
Family
ID=46082011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203789872U Expired - Fee Related CN202231437U (en) | 2011-09-28 | 2011-09-28 | Single-phase power supply filter easy to change impedance matching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231437U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105850006A (en) * | 2013-12-26 | 2016-08-10 | 三菱电机工程技术株式会社 | Automatic matching circuit for high-frequency power supply |
| CN107322133A (en) * | 2017-07-07 | 2017-11-07 | 佛山市巨电机电制造有限公司 | A kind of arc static circuit of electric welding machine |
| CN107819396A (en) * | 2016-09-14 | 2018-03-20 | 方惠娥 | A kind of comprehensive forceful electric power isolation and electric source filter circuit |
| CN109283413A (en) * | 2018-11-08 | 2019-01-29 | 浙江嘉科电子有限公司 | A kind of Novel Filter calibration matching test device |
-
2011
- 2011-09-28 CN CN2011203789872U patent/CN202231437U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105850006A (en) * | 2013-12-26 | 2016-08-10 | 三菱电机工程技术株式会社 | Automatic matching circuit for high-frequency power supply |
| CN107819396A (en) * | 2016-09-14 | 2018-03-20 | 方惠娥 | A kind of comprehensive forceful electric power isolation and electric source filter circuit |
| CN107322133A (en) * | 2017-07-07 | 2017-11-07 | 佛山市巨电机电制造有限公司 | A kind of arc static circuit of electric welding machine |
| CN109283413A (en) * | 2018-11-08 | 2019-01-29 | 浙江嘉科电子有限公司 | A kind of Novel Filter calibration matching test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20180928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |