CN2561159Y - Electromagnetic interference wave filter for power source supplier - Google Patents
Electromagnetic interference wave filter for power source supplier Download PDFInfo
- Publication number
- CN2561159Y CN2561159Y CN 01233688 CN01233688U CN2561159Y CN 2561159 Y CN2561159 Y CN 2561159Y CN 01233688 CN01233688 CN 01233688 CN 01233688 U CN01233688 U CN 01233688U CN 2561159 Y CN2561159 Y CN 2561159Y
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- capacity cell
- electromagnetic interference
- power supply
- supply unit
- inductance element
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Abstract
The utility model discloses an EMI filter of a power supplier, which comprises a plurality of capacitor elements, a plurality of inductance elements. The capacitor elements and the inductance elements are applied to the filtering of the power supply, to filter additional electromagnetic interference noise which is generated by the transformation of a high frequency switch, the elements with specifically numerical value are utilized to achieve enhancement of noise filtering, and the power supply can meet the securing electromagnetic interference radiation metrology which is prescribed by each country.
Description
Technical field
The utility model relates to a kind of electromagnetic interference (EMI) filter of power supply unit, particularly a kind of filter that is applied to be used on the power supply unit reducing the electromagnetic interference noise.
Background technology
Our employed daily living article all uses interchange (AC) power supply now, its fixed-frequency is 60Hz, and rated voltage is 110 volts, this is called effective RMS (Root-Mean-Square) value, yet for the accurate electronic installation of great majority, need under direct current (DC) voltage, could operate, because required dc voltage value is often different because of different electronic installations, therefore generally be to utilize transformer and rectification circuit with 110 volts, the alternating current of 60Hz transfers required direct voltage to.
Because the power supply device of personal computer also is to utilize above-mentioned principle, but it carries out the operation of system (especially CPU) because of often utilizing little current signal, so for the relative raising of the purity requirement of signal, therefore, make power source conversion with the HF switch transformation, but the HF switch transformation can produce the problem of electromagnetic interference, disturbs control because various countries all can implement safety electromagnetic to electric equipment products, makes this product spread out of next other electric equipment products of the unlikely interference of electromagnetic interference by AC power supplies.
Summary of the invention
Main purpose of the present utility model is the electromagnetic interface filter that a kind of power supply unit is provided, its element by the special value scope is formed, in order to power supply unit (active power factor is adjusted before circuit and the high-voltage rectifying), the electromagnetic interference noise that the HF switch transformation produces is done filtering and inhibition, make this product can pass through the electromagnetic interference safety standard of various countries.
Electromagnetic interface filter according to the disclosed power supply unit of the utility model, this filter includes two power filter devices at least, its function is after alternating current is adjusted circuit (active power factor adjustment circuit) and high-voltage rectifying through active power factor, a HF switch voltage transformation unit is provided, process in the switch transformation can produce extra electromagnetic interference problem, electromagnetic interface filter can suppress the energy of electromagnetic interference, and the problem of electromagnetic interference is eliminated.
The utility model provides a kind of electromagnetic interference (EMI) filter of power supply unit, the Electromagnetic interference filter of this power supply unit includes at least: a plurality of capacity cells and a plurality of inductance element, wherein the 1st, first end of 2 capacity cells is the noise input, its second end is respectively earth terminal, first of the 3rd capacity cell, two ends are then respectively with the 1st, first end of 2 capacity cells is coupled, the the 1st and the 2nd inductance element mate mutually and its first end respectively with first of the 3rd capacity cell, two ends are coupled, this second end respectively with first of the 4th capacity cell, two ends are coupled, and first end of the 5th capacity cell is coupled with second end of the 2nd inductance element and first end of the 7th capacity cell respectively; First end of the 6th capacity cell then is coupled with second end of the 4th inductance element and second end of the 7th capacity cell respectively; The the 3rd and the 4th inductance element mates mutually and its first end is coupled with the first, two end of the 7th capacity cell respectively; Reach an active power factor and adjust circuit and high-voltage rectifying unit, formed by a plurality of diodes and one the 8th capacity cell, the first, two end of this high-voltage rectifying unit is respectively with the 4th capacity cell and connect that the 3rd end is connected in series back ground connection with the 8th capacity cell and with the 4th end of this rectification unit and be connected to a HF switch voltage transformation unit.
The utility model also provides a kind of electromagnetic interference (EMI) filter of power supply unit, and the Electromagnetic interference filter of this power supply unit includes at least:
One first power filter device is made up of a plurality of capacity cells and a plurality of inductance element, the noise that is produced during in order to filtering high frequency transformation;
One second source filter is made up of a plurality of capacity cells and a plurality of inductance element, in order to the noise of this first power filter device output signal of filtering; And
One active power factor is adjusted circuit and high-voltage rectifying unit, in order to reduce the common mode noise that the HF switch transformation produces, in order to the effect of power filter device.
For making the purpose of this utility model, structural feature and function thereof there are further understanding, are described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is a systemic-function block diagram of the present utility model;
Fig. 2 is the thin portion of a components of system as directed of the present utility model circuit diagram;
Fig. 3 is the thin portion of a components of system as directed of the present utility model circuit diagram; And
Fig. 4 is the thin portion of an integral body of the present utility model circuit diagram.
Embodiment
Electromagnetic interface filter according to the disclosed power supply unit of the utility model, as shown in Figure 1, noise produces through high frequency voltage transformation unit 11 and sends, through the first power filter device, 20 filtering part high-frequency electromagnetic interfering noises, deliver to the noise filtering ability of second source filter 30 strengthening systems afterwards again, the noise that flows to the Alternating Current Power Supply network afterwards can pass through the electromagnetic interference examination criteria.
As Fig. 2, shown in 3, it is the thin portion circuit diagram of the first power filter device 20 and second source filter 30, noise input two ends 27 respectively with the 4th capacity cell 26 mutually and connect and be connected in series respectively with the 2nd inductance element 25 with the 1st inductance element 24, the two ends of the 3rd capacity cell 23 and the 1st inductance element 24 and the 2nd inductance element 25 noise outputs 27 also connect, and the 1st capacity cell 21 is connected in series with the 3rd electric capacity again and connects with the 2nd capacity cell 22, the 1st capacity cell 21 is received earth terminal with the contact that the 2nd capacity cell 22 is connected in series, and signal is finished the action of the first rank noise filtering via the first power filter device 20; Noise input 27 two ends are connected in series with the 4th inductance element 35 with the 3rd inductance element 34 respectively, the noise output of the 3rd inductance element 34 and the 4th inductance element 35 and the 7th capacity cell 33 also connect, the 5th capacity cell 31 and the 6th capacity cell 32 are connected in series earlier with the 7th capacity cell 33 again and connect, the 5th capacity cell 31 is received earth terminal with the point that is connected in series of the 6th capacity cell 32, at last, circuit terminates to noise output 37 for 32 liang by the 5th capacity cell 31 and the 6th capacity cell, reach the action of the first rank noise filtering by the noise of the first power filter device, 20 outputs, after 30 outputs of second source filter, reach the action of the second rank noise filtering.Active power factor is adjusted circuit and the high-voltage rectifying unit is made up of a plurality of diodes and one the 8th capacity cell 40, first and second end of this high-voltage rectifying unit is respectively with the 4th capacity cell 26 and connect, the 3rd end is connected in series back ground connection with the 8th capacity cell 40, the 3rd end and its 4th end are also received a HF switch voltage transformation unit 12.
With preferred embodiment, its value of the 1st, 2,6,5 capacity cells is between 1980pf and 2420pf; Its value of the 8th capacity cell is between 4230pf and 5170pf; Its value of the 3rd capacity cell is between 0.45 μ f and 1.1 μ f; Its value of the 4th capacity cell is between 0.9 μ f and 1.1 μ f; Its value of the 7th capacity cell is between 0.09 μ f and the 0.34 μ f; The 1st, 2 inductance element is that its value of common mode inductance element is between 13.5mH and 16.5mH; The 3rd, 4 inductance element is that its value of common mode inductance element is between 2.25mH and 2.75mH.
As shown in Figure 4, noise obtains safety electromagnetic up to specification and disturbs control test via after the first power filter device 20 and the second source filter 30, delivers at last among the Alternating Current Power Supply network.The 8th capacity cell 40 is serially connected in an end of high-voltage rectifying unit to earth terminal, the high frequency common mode noise can be reduced, in order to the effect of power filter device.
The above person only is the utility model preferred embodiment wherein, is not to be used for limiting practical range of the present utility model; Be all equivalent variations and modifications of being done according to the utility model claim scope, be all the utility model claim scope and contain.
Claims (19)
1. the Electromagnetic interference filter of a power supply unit, the Electromagnetic interference filter of described power supply unit includes at least: a plurality of capacity cells and a plurality of inductance element, it is characterized in that, the 1st, first end of 2 capacity cells is the noise input, its second end is respectively earth terminal, first of the 3rd capacity cell, two ends are then respectively with the described the 1st, first end of 2 capacity cells is coupled, the the 1st and the 2nd inductance element mate mutually and its first end respectively with first of described the 3rd capacity cell, two ends are coupled, described second end respectively with first of described the 4th capacity cell, two ends are coupled, and first end of the 5th capacity cell is coupled with second end of described the 2nd inductance element and first end of the 7th capacity cell respectively; First end of the 6th capacity cell then is coupled with second end of described the 4th inductance element and second end of described the 7th capacity cell respectively; The the 3rd and the 4th inductance element mates mutually and its first end is coupled with the first, two end of described the 7th capacity cell respectively; Reach an active power factor and adjust circuit and high-voltage rectifying unit, formed by a plurality of diodes and one the 8th capacity cell, the first, two end of this high-voltage rectifying unit is respectively with described the 4th capacity cell and connect that the 3rd end is connected in series back ground connection with the 8th capacity cell and with the 4th end of described rectification unit and be connected to a HF switch voltage transformation unit.
2. the Electromagnetic interference filter of power supply unit as claimed in claim 1 is characterized in that, its value of described the 1st, 2,6,5 capacity cells is between 1980pf and 2420pf.
3. the Electromagnetic interference filter of power supply unit as claimed in claim 1 is characterized in that, its value of described the 8th capacity cell is between 4230pf and 5170pf.
4. the Electromagnetic interference filter of power supply unit as claimed in claim 1 is characterized in that, its value of described the 3rd capacity cell is between 0.45 μ f and 1.1 μ f.
5. the Electromagnetic interference filter of power supply unit as claimed in claim 1 is characterized in that, its value of described the 4th capacity cell is between 0.9 μ f and 1.1 μ f.
6. the Electromagnetic interference filter of power supply unit as claimed in claim 1 is characterized in that, its value of described the 7th capacity cell is between 0.09 μ f and 0.34 μ f.
7. the Electromagnetic interference filter of power supply unit as claimed in claim 1 is characterized in that, described the 1st, 2 inductance element is that its value of common mode inductance element is between 13.5mH and 16.5mH.
8. the Electromagnetic interference filter of power supply unit as claimed in claim 1 is characterized in that, described the 3rd, 4 inductance element is that its value of common mode inductance element is between 2.25mH and 2.75mH.
9. the Electromagnetic interference filter of a power supply unit, the Electromagnetic interference filter of described power supply unit includes at least:
One first power filter device is made up of a plurality of capacity cells and a plurality of inductance element, the noise that is produced during in order to filtering high frequency transformation;
One second source filter is made up of a plurality of capacity cells and a plurality of inductance element, in order to the noise of the described first power filter device output signal of filtering; And
One active power factor is adjusted circuit and high-voltage rectifying unit, in order to reduce the common mode noise that the HF switch transformation produces, in order to the effect of power filter device.
10. the Electromagnetic interference filter of power supply unit as claimed in claim 9, it is characterized in that, the described first power filter device comprises the 1st at least, 2,3,4 capacity cells and the 1st, 2 inductance element, the described the 1st, its first end of 2 capacity cells is all as signal output part, and its second end then is all earth terminal, described the 3rd capacity cell its first, two ends are then respectively with the described the 1st, first end of 2 capacity cells is coupled, described the 1st, 2 inductance element mate each other and its first end respectively with first of described the 3rd capacity cell, two ends are coupled, its second end respectively with first of described the 4th capacity cell, two ends are coupled.
11. Electromagnetic interference filter as claim 9 or 10 described arbitrary power supply units, it is characterized in that, described second source filter comprises the 5th at least, 6,7 capacity cells and the 3rd, 4 inductance elements, its first end of described the 5th, 6 capacity cell all as the noise output respectively with the described the 3rd, first end of 4 inductance elements is coupled, its second end then is all earth terminal, and its first, two end of described the 7th capacity cell is respectively with the described the 5th, first end of 6 capacity cells is coupled, described the 3rd, 4 inductance element mates each other and its first end is coupled with the first, two end of described the 7th capacity cell respectively.
12. the Electromagnetic interference filter of power supply unit as claimed in claim 9, it is characterized in that, described active power factor is adjusted circuit and its first, two end of high-voltage rectifying unit respectively with described the 4th capacity cell and connect that its 3rd end be connected in series back ground connection with the 8th capacity cell and with the 4th end of described active power factor adjustment circuit and high-voltage rectifying unit and connect a HF switch voltage transformation unit.
13. the Electromagnetic interference filter of power supply unit as claimed in claim 9 is characterized in that, its value of described the 1st, 2,5,6 capacity cells is between 1980pf and 2420pf.
14. the Electromagnetic interference filter of power supply unit as claimed in claim 9 is characterized in that, its value of described the 8th capacity cell is between 4230pf and 5170pf.
15. the Electromagnetic interference filter of power supply unit as claimed in claim 9 is characterized in that, its value of described the 3rd capacity cell is between 0.45 μ f and 1.14 μ f.
16. the Electromagnetic interference filter of power supply unit as claimed in claim 9 is characterized in that, its value of described the 7th capacity cell is between 0.09 μ f and 0.34 μ f.
17. the Electromagnetic interference filter of power supply unit as claimed in claim 9 is characterized in that, its value of described the 4th capacity cell is between 0.9 μ f and 1.1 μ f.
18. the Electromagnetic interference filter of power supply unit as claimed in claim 9 is characterized in that, described the 3rd, 4 inductance element is that its value of common mode inductance element is between 2.25mH and 2.75mH.
19. the Electromagnetic interference filter of power supply unit as claimed in claim 9 is characterized in that, described the 1st, 2 inductance element is that its value of common mode inductance element is between 13.5mH and 16.5mH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233688 CN2561159Y (en) | 2001-08-09 | 2001-08-09 | Electromagnetic interference wave filter for power source supplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233688 CN2561159Y (en) | 2001-08-09 | 2001-08-09 | Electromagnetic interference wave filter for power source supplier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561159Y true CN2561159Y (en) | 2003-07-16 |
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ID=33647446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01233688 Expired - Fee Related CN2561159Y (en) | 2001-08-09 | 2001-08-09 | Electromagnetic interference wave filter for power source supplier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561159Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424995C (en) * | 2003-05-27 | 2008-10-08 | 台达电子工业股份有限公司 | Electromagnetic interference filter |
| CN1979570B (en) * | 2005-12-08 | 2010-05-05 | 深圳长城开发科技股份有限公司 | Tax-controlled cashier |
| CN103812106A (en) * | 2013-10-31 | 2014-05-21 | 陕西航空电气有限责任公司 | Anti-electromagnetic interference method of aerial AC (alternate current) power source system |
| CN104052251A (en) * | 2013-03-13 | 2014-09-17 | 雅达电子国际有限公司 | Power Supply Systems With Filters |
| CN105162431A (en) * | 2015-09-06 | 2015-12-16 | 北京长峰微电科技有限公司 | Broadband surface-mounted EMI filter for suppressing electromagnetic interference |
| 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 |
| CN106992700A (en) * | 2016-01-21 | 2017-07-28 | 建准电机工业股份有限公司 | Electric heating device |
| CN110832759A (en) * | 2017-06-23 | 2020-02-21 | 日立汽车系统株式会社 | Detector and power conversion device |
-
2001
- 2001-08-09 CN CN 01233688 patent/CN2561159Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424995C (en) * | 2003-05-27 | 2008-10-08 | 台达电子工业股份有限公司 | Electromagnetic interference filter |
| CN1979570B (en) * | 2005-12-08 | 2010-05-05 | 深圳长城开发科技股份有限公司 | Tax-controlled cashier |
| CN104052251A (en) * | 2013-03-13 | 2014-09-17 | 雅达电子国际有限公司 | Power Supply Systems With Filters |
| CN104052251B (en) * | 2013-03-13 | 2018-04-06 | 雅达电子国际有限公司 | Power-supply system with wave filter |
| CN103812106A (en) * | 2013-10-31 | 2014-05-21 | 陕西航空电气有限责任公司 | Anti-electromagnetic interference method of aerial AC (alternate current) power source system |
| CN105162431A (en) * | 2015-09-06 | 2015-12-16 | 北京长峰微电科技有限公司 | Broadband surface-mounted EMI filter for suppressing electromagnetic interference |
| CN105162431B (en) * | 2015-09-06 | 2017-12-29 | 北京长峰微电科技有限公司 | A kind of broadband Surface Mount electromagnetic interface filter for suppression electromagnetic interference |
| CN106992700A (en) * | 2016-01-21 | 2017-07-28 | 建准电机工业股份有限公司 | Electric heating 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 |
| CN110832759A (en) * | 2017-06-23 | 2020-02-21 | 日立汽车系统株式会社 | Detector and power conversion device |
| CN110832759B (en) * | 2017-06-23 | 2021-12-14 | 日立安斯泰莫株式会社 | Detector and power conversion device |
| US11303223B2 (en) | 2017-06-23 | 2022-04-12 | Hitachi Astemo, Ltd. | Detector and power conversion apparatus |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |