CN202026516U - Electronic ballast input filtering loop - Google Patents
Electronic ballast input filtering loop Download PDFInfo
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- CN202026516U CN202026516U CN2011201025224U CN201120102522U CN202026516U CN 202026516 U CN202026516 U CN 202026516U CN 2011201025224 U CN2011201025224 U CN 2011201025224U CN 201120102522 U CN201120102522 U CN 201120102522U CN 202026516 U CN202026516 U CN 202026516U
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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
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Abstract
The utility model relates to the technology of electronic ballasts. The utility model solves the problem that a circuit of the current electronic ballast can easily cause damage to the electronic ballast when fluctuation occurs in electrical network voltage, and provides an electronic ballast input filtering loop. Technical scheme of the electronic ballast input filtering loop lies in that the same comprises an input port, an output port, a surge absorption loop and a common mode filter circuit, wherein the input port is connected with the surge absorption loop, the surge absorption loop is connected with the common mode filter circuit, and the common mode filter circuit is connected with the input port. The beneficial effects of the utility model are that the electronic ballast is prevented from being damaged by introduction of surge voltage, the electrical network is prevented from being influenced by harmonic waves generated by the electronic ballast, the electronic ballast is prevented from being influenced by the harmonic waves of the electrical network, and the input filtering loop is suitable form an input loop of the electronic ballast.
Description
Technical field
The utility model relates to the electric ballast technology, particularly the technology of electric ballast input filter circuit.
Background technology
Current electric ballast, compare with Inductive ballast, conversion efficiency promotes to some extent, install and relatively also want simple, but general poor reliability, there are a lot of use a period of times just to damage, to such an extent as to electric ballast can't reach the practical stage, allow the advantage of this novel product fail to bring into play fully, even also caused very big negative effect, cause the poor reliability except pursuing low-cost employing components and parts inferior, also have circuit design unreasonable, complexity to electrical network is understood inadequately, so line voltage is in case the appearance fluctuation just can cause electric ballast to damage.
The utility model content
The purpose of this utility model is that the circuit that overcomes present electric ballast is easy to the shortcoming that causes electric ballast to damage when fluctuation appears in line voltage, and a kind of electric ballast input filter circuit is provided.
The utility model solves its technical problem, the technical scheme that adopts is, electric ballast input filter circuit, it is characterized in that, comprise input port, output port, surge absorption circuit and common mode filtering circuit, described input port is connected with the surge absorption circuit, and the surge absorption circuit is connected with the common mode filter circuit, and the common mode filtering circuit is connected with output port.
Concrete, described input port comprises live wire input, zero line input, ground wire input and protective tube, described live wire input is connected with an end of protective tube, the other end of protective tube is connected with the surge absorption circuit, the zero line input is connected with the surge absorption circuit, and the ground wire input is connected with the surge absorption circuit.
Further, described surge absorption circuit comprises resistance, piezo-resistance and ceramic discharge tube, described resistance one end is connected with the other end of the protective tube of input port, the other end of resistance is connected with the common mode filter circuit, and be connected with an end of piezo-resistance, the other end of piezo-resistance is connected with the zero line input of input port, and is connected with the common mode filter circuit, and be connected with an end of ceramic discharge tube, the other end of ceramic discharge tube is connected with the ground wire input of input port.
Concrete, described resistance is thermistor.
Further again, described common mode filtering circuit comprises common mode inductance, electric capacity one, electric capacity two, electric capacity three, electric capacity four and ground wire, two inputs of described common mode inductance connect by electric capacity one, an input is connected with the other end of the resistance of surge absorption circuit, another input is connected with the zero line input of input port, two outputs of common mode inductance connect by electric capacity two, an output is connected with an end of electric capacity three, and be connected with output port, another output is connected with an end of electric capacity four, and be connected with output port, the other end of electric capacity three is connected with the other end of resistance four, and be connected with ground wire, ground wire is connected with the ground wire input of input port.
The beneficial effects of the utility model are, by above-mentioned electric ballast input filter circuit, by surge absorbing circuit the surge voltage that electrical network produces is absorbed, avoid electric ballast to cause damage because of introducing surge voltage, by filter circuit the harmonic components that produces in the circuit is carried out filtering again, prevent that harmonic wave that electric ballast produces from impacting electrical network and electrical network in harmonic wave electric ballast is impacted.
Description of drawings
Fig. 1 is the circuit diagram of present embodiment electric ballast input filter circuit;
Wherein, L is the live wire input, and N is the zero line input, and G is the ground wire input, and F is a protective tube, and FDG is a ceramic discharge tube, and RV is a piezo-resistance, and R is a resistance, and LF is a common mode inductance, and C1 is an electric capacity one, and C2 is an electric capacity two, and C3 is an electric capacity three, and C4 is an electric capacity four.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
Electric ballast input filter circuit described in the utility model is connected with the surge absorption circuit by input port, the surge absorption circuit is connected with the common mode filter circuit, common mode filtering circuit and output port connect to form, by surge absorbing circuit the surge voltage that electrical network produces is absorbed, avoid electric ballast to cause damage because of introducing surge voltage, by filter circuit the harmonic components that produces in the circuit is carried out filtering again, prevent that harmonic wave that electric ballast produces from impacting electrical network and electrical network in harmonic wave electric ballast is impacted.
Embodiment
This routine input port is formed its circuit diagram such as Fig. 1 by live wire input L, zero line input N, ground wire input G and protective tube F.
At first be connected with the surge absorption circuit by input port; the surge absorption circuit is connected with the common mode filter circuit; common mode filtering circuit and output port connect to form electric ballast input filter circuit; wherein; input port is by live wire input L; zero line input N; ground wire input G and protective tube F form; the surge absorption circuit is by resistance R; piezo-resistance RV and ceramic discharge tube FDG form; the common mode filtering circuit is by common mode inductance LF; electric capacity one C1; electric capacity two C2; electric capacity three C3; electric capacity four C4 and ground wire are formed; here live wire input L is connected with the end of protective tube F; resistance R one end is connected with the other end of protective tube F; the other end of resistance R is connected with the end of piezo-resistance RV; the other end of piezo-resistance RV is connected with zero line input N; and be connected with the end of ceramic discharge tube FDG; the other end of ceramic discharge tube FDG is connected with ground wire input G; two inputs of common mode inductance LF connect by electric capacity one C1; an input is connected with the other end of resistance R; another input is connected with zero line input N; two outputs of common mode inductance LF connect by electric capacity two C2; an output is connected with the end of electric capacity three C3; and be connected with output port; another output is connected with the end of electric capacity four C4; and be connected with output port; the other end of electric capacity three C3 is connected with the other end of resistance four C4; and be connected with ground wire, ground wire is connected (promptly by the ground wire input with the shell protective earthing) with ground wire input G.
Protective tube F mainly act as the security of operation that prevents to occur when electric ballast from breaking down big current affects electrical network; resistance R is a thermistor; it mainly acts on is in order to prevent that electric ballast from producing big electric current when starting electrical network is impacted; the surge absorption circuit is by ceramic discharge tube FDG; resistance R and piezo-resistance RV form; when surge voltage when live wire input L and zero line input N line-to-line are introduced; if surpass 470V; piezo-resistance RV can be breakdown; thereby input voltage is limited in the voltage range that electric ballast can bear; when surge voltage when zero line input N and ground wire input G line-to-line are introduced; if voltage surpasses 600V; ceramic discharge tube FDG will be breakdown; thereby with the voltage limit between zero line input N and the shell in the voltage range that electric ballast insulation can bear; prevent that electric ballast from damaging; when surge voltage when live wire input L and ground wire input G line-to-line are introduced; then at first piezo-resistance RV is limited the voltage between live wire input L and zero line input N; by ceramic discharge tube FDG the voltage between zero line input N and the ground wire input G is limited then, thus the protection electric ballast.Can be filtered out behind the common mode filtering circuit of the harmonic voltage that electrical network produces when operation through electric capacity one C1, electric capacity two C2 and common mode inductance LF composition, thereby can not exert an influence to electric ballast, equally, the high-frequency harmonic voltage, the high-frequency harmonic electric current composition that produce during electric ballast work also can be filtered out by the common mode filtering circuit, can the safe operation of electrical network not impacted.
Claims (5)
1. electric ballast is imported filter circuit, it is characterized in that comprise input port, output port, surge absorption circuit and common mode filtering circuit, described input port is connected with the surge absorption circuit, the surge absorption circuit is connected with the common mode filter circuit, and the common mode filtering circuit is connected with output port.
2. according to the described electric ballast input of claim 1 filter circuit, it is characterized in that, input port comprises live wire input, zero line input, ground wire input and protective tube, described live wire input is connected with an end of protective tube, the other end of protective tube is connected with the surge absorption circuit, the zero line input is connected with the surge absorption circuit, and the ground wire input is connected with the surge absorption circuit.
3. according to the described electric ballast input of claim 2 filter circuit, it is characterized in that, described surge absorption circuit comprises resistance, piezo-resistance and ceramic discharge tube, described resistance one end is connected with the other end of the protective tube of input port, the other end of resistance is connected with the common mode filter circuit, and be connected with an end of piezo-resistance, the other end of piezo-resistance is connected with the zero line input of input port, and be connected with the common mode filter circuit, and be connected with an end of ceramic discharge tube, the other end of ceramic discharge tube is connected with the ground wire input of input port.
4. according to the described electric ballast input of claim 3 filter circuit, it is characterized in that described resistance is thermistor.
5. according to claim 3 or 4 described electric ballast input filter circuits, it is characterized in that, described common mode filtering circuit comprises common mode inductance, electric capacity one, electric capacity two, electric capacity three, electric capacity four and ground wire, two inputs of described common mode inductance connect by electric capacity one, an input is connected with the other end of the resistance of surge absorption circuit, another input is connected with the zero line input of input port, two outputs of common mode inductance connect by electric capacity two, an output is connected with an end of electric capacity three, and be connected with output port, another output is connected with an end of electric capacity four, and be connected with output port, the other end of electric capacity three is connected with the other end of resistance four, and is connected with ground wire, and ground wire is connected with the ground wire input of input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201025224U CN202026516U (en) | 2011-04-08 | 2011-04-08 | Electronic ballast input filtering loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201025224U CN202026516U (en) | 2011-04-08 | 2011-04-08 | Electronic ballast input filtering loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202026516U true CN202026516U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201025224U Expired - Fee Related CN202026516U (en) | 2011-04-08 | 2011-04-08 | Electronic ballast input filtering loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202026516U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510042A (en) * | 2011-11-04 | 2012-06-20 | 四川省电力公司内江电业局 | Power supply protection device for acquisition terminal |
| CN103701126A (en) * | 2013-12-26 | 2014-04-02 | 武汉光谷电气有限公司 | Three-phase five-wire system harmonic protector |
| CN105048797A (en) * | 2015-06-13 | 2015-11-11 | 中山市韩科电器有限公司 | Filter circuit for electromagnetic heating of electromagnetic type heating electric cooker |
| CN105633966A (en) * | 2016-03-18 | 2016-06-01 | 北京新能源汽车股份有限公司 | Electromagnetic interference suppression circuit and equipment |
| CN106374759A (en) * | 2016-10-19 | 2017-02-01 | 成都尚智恒达科技有限公司 | Multiplexed output power supply with protection function |
| CN106849042A (en) * | 2015-09-22 | 2017-06-13 | 黄进祥 | Surge suppression and overcurrent protection device |
| CN107887898A (en) * | 2016-09-29 | 2018-04-06 | 维谛技术有限公司 | A kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit |
-
2011
- 2011-04-08 CN CN2011201025224U patent/CN202026516U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510042A (en) * | 2011-11-04 | 2012-06-20 | 四川省电力公司内江电业局 | Power supply protection device for acquisition terminal |
| CN103701126A (en) * | 2013-12-26 | 2014-04-02 | 武汉光谷电气有限公司 | Three-phase five-wire system harmonic protector |
| CN103701126B (en) * | 2013-12-26 | 2016-02-17 | 武汉光谷电气有限公司 | A kind of three-phase five-wire system harmonic protector |
| CN105048797A (en) * | 2015-06-13 | 2015-11-11 | 中山市韩科电器有限公司 | Filter circuit for electromagnetic heating of electromagnetic type heating electric cooker |
| CN106849042A (en) * | 2015-09-22 | 2017-06-13 | 黄进祥 | Surge suppression and overcurrent protection device |
| CN105633966A (en) * | 2016-03-18 | 2016-06-01 | 北京新能源汽车股份有限公司 | Electromagnetic interference suppression circuit and equipment |
| CN107887898A (en) * | 2016-09-29 | 2018-04-06 | 维谛技术有限公司 | A kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit |
| CN106374759A (en) * | 2016-10-19 | 2017-02-01 | 成都尚智恒达科技有限公司 | Multiplexed output power supply with protection function |
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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: 20111102 Termination date: 20150408 |
|
| EXPY | Termination of patent right or utility model |