CN100435481C - Electromagnetic compatible filter network and filter network module - Google Patents
Electromagnetic compatible filter network and filter network module Download PDFInfo
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- CN100435481C CN100435481C CNB2004100150274A CN200410015027A CN100435481C CN 100435481 C CN100435481 C CN 100435481C CN B2004100150274 A CNB2004100150274 A CN B2004100150274A CN 200410015027 A CN200410015027 A CN 200410015027A CN 100435481 C CN100435481 C CN 100435481C
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Abstract
The present invention relates to an electromagnetic compatible filter network and a filter network module which are arranged between the input terminal of a power supply and a rectification circuit. The filter network is a seven-terminal passive linear network which is composed of seven capacitors, wherein internal connection terminal heads of the capacitors are connected together, external connection terminal heads of the capacitors are seven external connection terminators respectively, the external connection terminal head of one capacitor is connected to a power ground wire, and every two capacitors of the other six capacitors form a group; in each group, the capacitors have the same parameters; the first group of capacitors have the external connection terminal heads which are input external connection terminal heads which are respectively connected to two power input terminals, the second group of capacitors have the external connection terminal heads which are middle external connection terminal heads which are respectively connected to the two input terminals of the rectification circuit, and the third group of capacitors have the external connection terminal heads which are output external connection terminal heads which are respectively connected to the two output terminals of the rectification circuit. The filter network module is a nine-foot thick film integrated circuit which integrates the electromagnetic compatible filter network through encapsulation. The present invention has the advantages of original conception, simple circuit, compact composition, few elements and stable performance, and the present invention can solve electromagnetic interference type electromagnetic compatibility problems to generate obvious effects.
Description
Technical field
The present invention relates to only select multiterminal to impedance network as the frequency of network components, relate to a kind of electromagnetic compatibility filter network and filter network module particularly with passive electrical element.
Background technology
The national standard relevant with electromagnetic compatibility EMC, wherein major part is the standard that is equal to international standard, to most IT product, have the electric equipment products of alternating current machine or permanent magnet DC motor, particularly use the electromagnetic compatibility problem such as the ubiquitous electromagnetic interference of electric equipment products, electromagnetic field and radio frequency interference of converter and inverter simultaneously, all stipulated strict restriction, its purpose will prevent that exactly electromagnetic energy from entering or being given out by electric equipment products, guarantee the normal operation of this electrical equipment and near other electrical equipment, avoid taking place serious accident.Practice shows, make electric equipment products meet electromagnetic compatibility relevant national standard, international standard, is a problem that is difficult to solution in fact.Be to be that electromagnetic interference is imported equipment into and spread out of the equipment main path at present mostly according to power line, and prevent in shielding, filtering and the grounding measure of electromagnetic interference, to adopt the most effective theory of filtering technique, power line filter is installed at the power import place of equipment, be suppressed at the differential mode interference that produces in the Live line Zero line loop and with the loop of live wire, zero line and ground wire and the earth in the common mode disturbances that produces.Open respectively as Chinese patent CN1290987A, CN2567863Y, as to announce " electromagnetic compatible anti-interference device of permanent magnetic DC motor " and " the electromagnetic compatibility filter network of transducer air conditioning ", they all are a kind of networks that is made of the inductance of lumped parameter, electric capacity and resistance.But, also all await further improvement because the network configuration difference is different to the inhibition effect of differential mode interference and common mode disturbances.As for the electromagnetic compatibility filter network that in electric ballast, adopts, the restriction of S-5 such as be subjected to also that cost is low, volume is little, that technology is made is difficult, reliability is high and the property taken into account is wide, but have not yet to see the electromagnetic compatibility filter network of the practicability that can satisfy above-mentioned S-5 simultaneously.
Summary of the invention
Main purpose of the present invention is to remedy the defective that prior art exists, and proposes the filter network of the electromagnetic compatibility that a kind of cost is low, reliability is high and the property taken into account is wide.
Another object of the present invention is the filter network module that proposes a kind of electromagnetic compatibility.
Main purpose of the present invention can be achieved by adopting following technical scheme:
The filter network of this electromagnetic compatibility, be arranged between power input and the rectification circuit, it is the network that the electric capacity by lumped parameter constitutes, described network by seven by connecing that the termination is connected jointly in one and the seven end passive linear network that the electric capacity that another external termination is respectively seven external terminals is formed, the external termination of one of them high pressure ceramic disc capacitor is connected to power ground, other six patch capacitors are formed one group in twos, the parameter of every group of electric capacity is identical, the external termination of one group of electric capacity is the external termination of input, be connected to two power inputs respectively, the external termination of second group of electric capacity is middle external termination, be connected to two inputs of rectification circuit respectively, the external termination of the 3rd group of electric capacity is the external termination of output, is connected to two outputs of rectification circuit respectively.
Main purpose of the present invention can also be achieved by adopting following technical scheme:
The capacity of described high pressure ceramic disc capacitor is 0.001 microfarad～0.01 microfarad.
The withstand voltage of described high pressure ceramic disc capacitor is 1 kilovolt～3 kilovolts.
The capacity of described patch capacitor is 500 picofarads～0.02 microfarad.
The withstand voltage of described patch capacitor is more than 250 volts.
Another object of the present invention can be achieved by adopting following technical scheme:
The filter network module of this electromagnetic compatibility, be arranged between power input and the rectification circuit, be the network encapsulation all-in-one-piece nine pin thick film integrated circuits that the electric capacity by lumped parameter constitutes, described network by seven by connecing that the termination is connected jointly in one and the seven end passive linear network that the electric capacity that another external termination is respectively seven external terminals is formed, the external termination of one of them high pressure ceramic disc capacitor is the terminal pin that is connected to power ground, other six patch capacitors are formed one group in twos, the parameter of every group of electric capacity is identical, the external termination of one group of electric capacity is the terminal pin of the external termination of input, be connected to two power inputs respectively, the external termination of second group of electric capacity is the terminal pin of middle external termination, be connected to two inputs of rectification circuit respectively, the external termination of the 3rd group of electric capacity is the terminal pin of the external termination of output, is connected to two outputs of rectification circuit respectively.
Another object of the present invention can also be achieved by adopting following technical scheme:
The capacity of described high pressure ceramic disc capacitor is 0.001 microfarad～0.01 microfarad.
The withstand voltage of described high pressure ceramic disc capacitor is 1 kilovolt～3 kilovolts.
The capacity of described patch capacitor is 500 picofarads～0.02 microfarad.
The withstand voltage of described patch capacitor is more than 250 volts.
The overall dimension of described nine pin thick film integrated circuits be long 27 millimeters, wide 7.5 millimeters, comprise the high 20 millimeters of terminal pin.
The present invention's beneficial effect against existing technologies is, novel, circuit is simple, forms compactly, and parts number is few, stable performance.The filter network of this electromagnetic compatibility stresses to suppress the conducted interference of power input, takes into account the inhibition radio frequency interference, has the advantage that cost is low, volume is little, technology is made easily, reliability is high and the property taken into account is wide.The present invention is suitably adjusting on the basis of peripheral filter inductance and electric capacity, can be widely used in various IT product, have the electric equipment products of alternating current machine or permanent magnet DC motor, particularly use the electromagnetic compatibility problem that solves the electromagnetic interference class in the electric equipment products of converter and inverter with produce effects simultaneously.In 9 kilo hertzs～1 dried mhz frequency scope, the corresponding index of electromagnetic compatibility meets the requirement of standard GB 17625.1-1998, GB17743-1999 and international standard IEC61000-3-2 (3), the EN55015 of European Union, EN55022, EN55025 and U.S. FCC18 (class B).
Description of drawings
The present invention has the following drawings:
Fig. 1 is the circuit diagram of the filter network of electromagnetic compatibility of the present invention;
Fig. 2 is that the filter network of electromagnetic compatibility of the present invention is applied to input power supply and the rectification circuit connection layout in the electric ballast;
Fig. 3 is the front view of the filter network module of electromagnetic compatibility of the present invention;
Fig. 4 is the end view of the filter network module of electromagnetic compatibility of the present invention.
Embodiment
A kind of filter network module that is applied to the electromagnetic compatibility in the electric ballast
The contrast accompanying drawing is specifically described the present invention below.
The filter network module of this electromagnetic compatibility, be arranged between power input and the rectification circuit, can adapt to power bracket: single lamp (T8/T5) 8W～15W, two lamps (T8/T5) 2 * 8W～2 * 70W, be the network encapsulation all-in-one-piece nine pin thick film integrated circuits that the electric capacity by lumped parameter constitutes, described network is to have by seven to connect in one that the termination is connected jointly and another external termination is respectively the capacitor C of seven external terminals
1～C
7The seven end passive linear network of forming, capacitor C
1External termination be that terminal pin 1 is connected to power ground, capacitor C
2And C
3, C
4And C
5, C
6And C
7Form one group respectively, the parameter of every group of electric capacity is identical, one group of capacitor C
2And C
3External termination be the input external termination terminal pin 6,3, respectively through gripping inductance L altogether
1And L
2Be connected to two power inputs, second group of capacitor C
4And C
5External termination be in the middle of the terminal pin 7,4 of external termination, be connected to two inputs of rectification circuit, the 3rd group of capacitor C respectively
6And C
7External termination be the terminal pin 10,9 of the external termination of output, be connected to two outputs of rectification circuit respectively.
Capacitor C
1Be the high pressure ceramic disc capacitor, in 0.001 microfarad～0.01 microfarad scope, select, withstand voltagely in 1 kilovolt～3 kilovolt range, select according to the big low capacity of input power.
Capacitor C
2～C
7Be patch capacitor, capacity is selected in 500 picofarads～0.02 microfarad scope according to the size of input power, and withstand voltage is more than 250 volts.
Among Fig. 2, L, N are respectively power firestreak and zero line, and FU is a fuse, diode D
1～4Form bridge rectifier.
Be connected the inductance L between the terminal pin 6,7
3And be connected inductance L between the terminal pin 3,4
4, all be the coil that adopts the coiling of " I " font magnetic post independence, inductance value is selected in 5～15 milihenry scopes according to the size of input power.Its function is to suppress the differential mode interference signal.Inductance L
1And L
2Be two groups of coils gripping coiling altogether, a shared cover magnetic core, magnetic gap is 0.1～0.2 millimeter, inductance value is selected in 40～60 milihenry scopes according to the size of input power.Its function is to suppress common mode interference signal.
Filter capacitor C
0Be X
2The level square capacitance, capacity is selected in 0.10～0.33 microfarad scope according to the size of input power, and is withstand voltage for exchanging 275 volts.
Piezo-resistance R
vAdopt 10D561.
Bleeder resistance R
1Resistance be 1 megaohm, power is 1 watt.
The filter network module application of this electromagnetic compatibility is in the low power factor network, in reactive power factor correcting network and the Active Power Factor Correction network class electric ballast, " EMC300A electromagnetic compatibility conducted interference test macro " detection of adopting the Hangzhou volt to reach Testing Technology Study institute shows, in 9 kilo hertzs～1 gigahertz frequencies scope, the corresponding index of electromagnetic compatibility meets standard GB 17625.1-1998, GB17743-1999 and international standard IEC61000-3-2 (3), the EN55015 of European Union, EN55022, the requirement of EN55025 and U.S. FCC18 (class B).
Above-mentioned is a kind of concrete preferred implementation of the present invention.For those skilled in the art, without departing from the inventive concept of the premise, can also make some changes and improvements, all should be considered as belonging to claim protection range of the present invention.
Claims (7)
1, a kind of filter network of electromagnetic compatibility, be arranged between power input and the rectification circuit, it is the network that the electric capacity by lumped parameter constitutes, it is characterized in that described network by seven by connecing that the termination is connected jointly in one and the seven end passive linear network that the electric capacity that another external termination is respectively seven external terminals is formed, the external termination of one of them high pressure ceramic disc capacitor is connected to power ground, other six patch capacitors are formed one group in twos, the parameter of every group of electric capacity is identical, the external termination of one group of electric capacity is the external termination of input, be connected to two power inputs respectively, the external termination of second group of electric capacity is middle external termination, be connected to two inputs of rectification circuit respectively, the external termination of the 3rd group of electric capacity is the external termination of output, is connected to two outputs of rectification circuit respectively.
2, the filter network of electromagnetic compatibility as claimed in claim 1, it is characterized in that described high pressure ceramic disc capacitor be capacity be 0.001 microfarad～0.01 microfarad, withstand voltage be 1 kilovolt～3 kilovolts high pressure ceramic disc capacitor.
3, the filter network of electromagnetic compatibility as claimed in claim 1, it is characterized in that described patch capacitor be capacity be 500 picofarads～0.02 microfarad, withstand voltage be 250 volts of above patch capacitors.
4, a kind of filter network module of electromagnetic compatibility, be arranged between power input and the rectification circuit, be the network encapsulation all-in-one-piece nine pin thick film integrated circuits that the electric capacity by lumped parameter constitutes, it is characterized in that described network by seven by connecing that the termination is connected jointly in one and the seven end passive linear network that the electric capacity that another external termination is respectively seven external terminals is formed, the external termination of one of them high pressure ceramic disc capacitor is the terminal pin that is connected to power ground, other six patch capacitors are formed one group in twos, the parameter of every group of electric capacity is identical, the external termination of one group of electric capacity is the terminal pin of the external termination of input, be connected to two power inputs respectively, the external termination of second group of electric capacity is the terminal pin of middle external termination, be connected to two inputs of rectification circuit respectively, the external termination of the 3rd group of electric capacity is the terminal pin of the external termination of output, is connected to two outputs of rectification circuit respectively.
5, the filter network module of electromagnetic compatibility as claimed in claim 4, it is characterized in that described high pressure ceramic disc capacitor be capacity be 0.001 microfarad～0.01 microfarad, withstand voltage be 1 kilovolt～3 kilovolts high pressure ceramic disc capacitor.
6, the filter network module of electromagnetic compatibility as claimed in claim 4, it is characterized in that described other six patch capacitors be capacity be 500 picofarads～0.02 microfarad, withstand voltage be 250 volts of above patch capacitors.
7, the filter network module of electromagnetic compatibility as claimed in claim 4 is characterized in that described nine pin thick film integrated circuits are that overall dimension is long 27 millimeters, wide 7.5 millimeters, as to comprise terminal pin nine high 20 millimeters pin thick film integrated circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100150274A CN100435481C (en) | 2004-01-08 | 2004-01-08 | Electromagnetic compatible filter network and filter network module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100150274A CN100435481C (en) | 2004-01-08 | 2004-01-08 | Electromagnetic compatible filter network and filter network module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1581685A CN1581685A (en) | 2005-02-16 |
| CN100435481C true CN100435481C (en) | 2008-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100150274A Expired - Fee Related CN100435481C (en) | 2004-01-08 | 2004-01-08 | Electromagnetic compatible filter network and filter network module |
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| CN (1) | CN100435481C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490563B (en) * | 2013-08-30 | 2016-08-17 | 武汉为腾科技有限公司 | PCB filter circuit for micro machine multipoint earthing wideband EMC |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290987A (en) * | 2000-11-09 | 2001-04-11 | 许宁宁 | Electromagnetic compatible anti-interference device of permanent magnetic DC motor |
| CN2567863Y (en) * | 2002-03-08 | 2003-08-20 | 珠海格力电器股份有限公司 | Electromagneitc compatible filter circuit of frequency conversion air conditioner |
-
2004
- 2004-01-08 CN CNB2004100150274A patent/CN100435481C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290987A (en) * | 2000-11-09 | 2001-04-11 | 许宁宁 | Electromagnetic compatible anti-interference device of permanent magnetic DC motor |
| CN2567863Y (en) * | 2002-03-08 | 2003-08-20 | 珠海格力电器股份有限公司 | Electromagneitc compatible filter circuit of frequency conversion air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1581685A (en) | 2005-02-16 |
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| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN CITY SANYE LIGHTING SCIENCE CO., LTD. Free format text: FORMER OWNER: DENG SHUXING Effective date: 20070316 |
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Effective date of registration: 20070316 Address after: Henggang Fu Guo Chang security industrial zone of Longgang District of Shenzhen City, Guangdong province 518000 Applicant after: Shenzhen Sanye Lighting Technology Co., Ltd. Address before: 518004 Guangdong city of Shenzhen province Luo Sha Lu Tong Garden Zhujiangdijing court 6C / D Applicant before: Deng Shuxing |
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Granted publication date: 20081119 Termination date: 20120108 |