CN203933387U - A kind of for suppressing filter circuit and the air conditioner of electromagnetic interference - Google Patents
A kind of for suppressing filter circuit and the air conditioner of electromagnetic interference Download PDFInfo
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- CN203933387U CN203933387U CN201420320127.7U CN201420320127U CN203933387U CN 203933387 U CN203933387 U CN 203933387U CN 201420320127 U CN201420320127 U CN 201420320127U CN 203933387 U CN203933387 U CN 203933387U
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- 239000003990 capacitor Substances 0.000 description 72
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Abstract
The utility model belongs to electronic circuit technology field, provides a kind of for suppressing filter circuit and the air conditioner of electromagnetic interference.What the utility model provided comprises an X electric capacity, resistance-capacitance network, common mode inductance, a Y electric capacity, the 2nd Y electric capacity and the 2nd X electric capacity for suppressing the filter circuit of electromagnetic interference, and wherein, resistance-capacitance network comprises resistance element and capacitive element; The filter circuit that comprises above-mentioned capacitive element, inductive element and resistance element by employing, not only can realize conventional low-pass filtering function, in each circuit module fast handover procedures of rear class, suppress electromagnetic interference, the resonance peak producing in the time of can also effectively reducing circuit generation resonance, make the Electro Magnetic Compatibility of household electrical appliance can meet better corresponding electromagnetic compatibility standard, solved the existing electromagnetic interference that cannot both realize of prior art and suppressed, can make again the Electro Magnetic Compatibility of household electrical appliance meet the problem of electromagnetic compatibility standard.
Description
Technical field
The utility model belongs to electronic circuit technology field, relates in particular to a kind of for suppressing filter circuit and the air conditioner of electromagnetic interference.
Background technology
At present, when many household electrical appliance (as air conditioner) are worked, there is electromagnetic interference to a certain degree in internal circuit.Take convertible frequency air-conditioner as example, its inside has the circuit module such as compressor and this high voltage of circuit of power factor correction and large electric current, these circuit modules can produce larger electromagnetic interference in fast handover procedures, this type of electromagnetic interference not only can produce interference to the power consumption equipment of the control circuit of convertible frequency air-conditioner itself, same power network line and near electronic equipment, even also can produce harm to human and animal's health.Therefore, suppress electromagnetic interference and become the major issue that solution is badly in need of in household electrical appliance producer.
Problem for above-mentioned electromagnetic interference, prior art is to comprise that by employing the filter of inductance and electric capacity realizes filtering to electromagnetic interference, so that the Electro Magnetic Compatibility of household electrical appliance meets the electromagnetic compatibility standard CISPR14 (frequency range of this prescribed by standard is 150KHz～300KHz) of household appliances product; Yet, the filter network being comprised of perceptual device (being above-mentioned inductance) and capacitive device (being above-mentioned electric capacity) is carrying out filtering meeting at some frequency range generation resonance, and then the larger resonance peak of generation, and larger resonance peak can reduce the Electro Magnetic Compatibility of household electrical appliance, make it be difficult to meet above-mentioned electromagnetic compatibility standard CISPR14.So prior art exists and cannot both realize electromagnetic interference and suppress, can make again the Electro Magnetic Compatibility of household electrical appliance meet the problem of electromagnetic compatibility standard.
Utility model content
It is a kind of for suppressing the filter circuit of electromagnetic interference that the utility model provides, and is intended to solve the existing electromagnetic interference that cannot both realize of prior art and suppresses, and can make again the Electro Magnetic Compatibility of household electrical appliance meet the problem of electromagnetic compatibility standard.
The utility model is achieved in that and a kind ofly for suppressing the filter circuit of electromagnetic interference, is connected with power circuit, a plurality of circuit modules power supplies that described power circuit is rear class; Described filter circuit comprises:
The one X electric capacity, resistance-capacitance network, common mode inductance, a Y electric capacity, the 2nd Y electric capacity and the 2nd X electric capacity;
The first end of a described X electric capacity, the live wire end of described resistance-capacitance network and the first end of described common mode inductance are all connected in alternating current fire wire, the first end of the second end of described common mode inductance and the first end of a described Y electric capacity and described the 2nd X electric capacity is connected to the live wire end of described power circuit altogether, the second end of a described X electric capacity, the 3rd end of the zero line side of described resistance-capacitance network and described common mode inductance is all connected in alternating current zero line, the ground end ground connection of described resistance-capacitance network, the second end of the 4th end of described common mode inductance and the first end of described the 2nd Y electric capacity and described the 2nd X electric capacity is connected to the zero line side of described power circuit altogether, the second end of the second end of a described Y electric capacity and described the 2nd Y electric capacity is connected to ground altogether, described resistance-capacitance network comprises resistance element and capacitive element, when switching fast between described a plurality of circuit modules, the electromagnetic interference that described resistance-capacitance network produces described power circuit suppresses to process.
Another object of the present utility model is also to provide a kind of air conditioner, and it comprises power circuit, a plurality of circuit module and above-mentioned for suppressing the filter circuit of electromagnetic interference.
What the utility model provided comprises an X electric capacity, resistance-capacitance network, common mode inductance, a Y electric capacity, the 2nd Y electric capacity and the 2nd X electric capacity for suppressing the filter circuit of electromagnetic interference, and wherein, resistance-capacitance network comprises resistance element and capacitive element; The filter circuit that comprises above-mentioned capacitive element, inductive element and resistance element by employing, not only can realize conventional low-pass filtering function, in a plurality of circuit module fast handover procedures of rear class, suppress electromagnetic interference, the resonance peak producing in the time of can also effectively reducing circuit generation resonance, make the Electro Magnetic Compatibility of household electrical appliance can meet better corresponding electromagnetic compatibility standard, solved the existing electromagnetic interference that cannot both realize of prior art and suppressed, can make again the Electro Magnetic Compatibility of household electrical appliance meet the problem of electromagnetic compatibility standard.
Accompanying drawing explanation
Fig. 1 be the utility model embodiment provide for suppressing the structure chart of the filter circuit of electromagnetic interference;
Fig. 2 be the utility model the first embodiment provide for suppressing the exemplary circuit structure chart of the filter circuit of electromagnetic interference;
Fig. 3 be the utility model the second embodiment provide for suppressing the exemplary circuit structure chart of the filter circuit of electromagnetic interference;
Fig. 4 be the utility model the 3rd embodiment provide for suppressing the exemplary circuit structure chart of the filter circuit of electromagnetic interference;
Fig. 5 be the utility model the 4th embodiment provide for suppressing the exemplary circuit structure chart of the filter circuit of electromagnetic interference;
Fig. 6 be the utility model the 5th embodiment provide for suppressing the exemplary circuit structure chart of the filter circuit of electromagnetic interference;
Fig. 7 be the utility model the 6th embodiment provide for suppressing the exemplary circuit structure chart of the filter circuit of electromagnetic interference.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Below with routine being elaborated for suppressing the filter circuit of electromagnetic interference that the utility model embodiment is provided that be applied as in air conditioner:
Air conditioner comprises each circuit module of filter circuit 100, power circuit 200 and rear class for suppressing electromagnetic interference.Fig. 1 shows the structure of filter circuit 100, and details are as follows:
Filter circuit 100 is connected with power circuit 200, a plurality of circuit module power supplies that power circuit 200 is rear class.Said a plurality of circuit module can be the circuit module of compressor, circuit of power factor correction or its high voltage, large electric current herein.
Filter circuit 100 comprises an X capacitor C x1, resistance-capacitance network 101, common mode inductance L1, a Y capacitor C y1, the 2nd Y capacitor C y2 and the 2nd X capacitor C x2.
The first end of the one X capacitor C x1, the live wire end of resistance-capacitance network 100 and the first end 1 of common mode inductance L1 are all connected in alternating current fire wire L, the first end of the second end 2 of common mode inductance L1 and the first end of a Y capacitor C y1 and the 2nd X capacitor C x2 is connected to the live wire end Lout of power circuit 200 altogether, the second end of the one X capacitor C x1, the 3rd end 3 of the zero line side of resistance-capacitance network 101 and common mode inductance L1 is all connected in alternating current zero line N, the ground end ground connection of resistance-capacitance network 101, the second end of the 4th end 4 of common mode inductance L1 and the first end of the 2nd Y capacitor C y2 and the 2nd X capacitor C x2 is connected to the zero line side Nout of power circuit 200 altogether, the second end of the second end of the one Y capacitor C y1 and the 2nd Y capacitor C y2 is connected to ground altogether, resistance-capacitance network 101 comprises resistance element and capacitive element, when switching fast between above-mentioned a plurality of circuit modules, the electromagnetic interference that 101 pairs of power circuits 200 of resistance-capacitance network produce suppresses to process.
The utility model embodiment is by adopting above-mentioned filter circuit, differential mode interference by an X capacitor C x1 filtering input, common mode inductance L1, a Y capacitor C y1 and the 2nd Y capacitor C y2 carry out filtering to common mode disturbances, and by the 2nd X capacitor C x2, the differential mode interference of output is suppressed, when occurring between each circuit module of rear class switching fast, resistance-capacitance network 101 can suppress to process to the electromagnetic interference producing in power circuit 200, and because its inside comprises resistance element and capacitive element, so can when producing resonance, reduce resonance peak.
In the utility model the first embodiment, as shown in Figure 2, resistance-capacitance network 101 comprises:
The 3rd Y capacitor C y3, the first resistance R 1, the second resistance R 2 and the 4th Y capacitor C y4;
The first end of the 3rd Y capacitor C y3 is the live wire end of resistance-capacitance network 101, the second end of the 3rd Y capacitor C y3 connects the first end of the first resistance R 1, the common contact of the second end of the first resistance R 1 and the first end of the second resistance R 2 is the ground end of resistance-capacitance network 101, the second end of the second resistance R 2 connects the first end of the 4th Y capacitor C y4, and the second end of the 4th Y capacitor C y4 is the zero line side of resistance-capacitance network 101.Wherein, the first resistance R 1 and the second resistance R 2 are resistance element, and the 3rd Y capacitor C y3 and the 4th Y capacitor C y4 are capacitive element.
In the utility model the second embodiment, as shown in Figure 3, resistance-capacitance network 101 comprises:
The 5th Y capacitor C y5, the first magnetic bead B1, the second magnetic bead B2 and the 6th Y capacitor C y6;
The first end of the 5th Y capacitor C y5 is the live wire end of resistance-capacitance network 101, the second end of the 5th Y capacitor C y5 connects the first end of the first magnetic bead B1, the common contact of the second end of the first magnetic bead B1 and the first end of the second magnetic bead B2 is the ground end of resistance-capacitance network 101, the second end of the second magnetic bead B2 connects the first end of the 6th Y capacitor C y6, and the second end of the 6th Y capacitor C y6 is the zero line side of resistance-capacitance network 101.Wherein, the first magnetic bead B1 and the second magnetic bead B2 are resistance element, and the 5th Y capacitor C y5 and the 6th Y capacitor C y6 are capacitive element.
In the utility model the 3rd embodiment, as shown in Figure 4, resistance-capacitance network 101 comprises:
The 7th Y capacitor C y7, the 3rd magnetic bead B3, the 3rd resistance R 3, the 4th resistance R 4, the 4th magnetic bead B4 and the 8th Y capacitor C y8;
The first end of the 7th Y capacitor C y7 is the live wire end of resistance-capacitance network 101, the 3rd magnetic bead B3 is connected between the 7th the second end of Y capacitor C y7 and the first end of the 3rd resistance R 3, the common contact of the second end of the 3rd resistance R 3 and the first end of the 4th resistance R 4 is the ground end of resistance-capacitance network 101, the 4th magnetic bead B4 is connected between the second end of the 4th resistance R 4 and the first end of the 8th Y capacitor C y8, and the second end of the 8th Y capacitor C y8 is the zero line side of resistance-capacitance network 101.Wherein, the 3rd magnetic bead B3, the 3rd resistance R 3, the 4th resistance R 4 and the 4th magnetic bead B4 are resistance element, and the 7th Y capacitor C y7 and the 8th Y capacitor C y8 are capacitive element.
In the utility model the 4th embodiment, as shown in Figure 5, resistance-capacitance network 101 comprises:
The 9th Y capacitor C y9, the 5th resistance R 5 and the tenth Y capacitor C y10;
The first end of the 9th Y capacitor C y9 is the live wire end of resistance-capacitance network 101, the first end of the second end of the 9th Y capacitor C y9 and the tenth Y capacitor C y10 is connected to the first end of the 5th resistance R 5 altogether, the second end of the 5th resistance R 5 is the ground end of resistance-capacitance network 101, and the second end of the tenth Y capacitor C y10 is the zero line side of resistance-capacitance network 101.Wherein, the 5th resistance R 5 is resistance element, and the 9th Y capacitor C y9 and the tenth Y capacitor C y10 are capacitive element.
In the utility model the 5th embodiment, as shown in Figure 6, resistance-capacitance network 101 comprises:
The 11 Y capacitor C y11, the 5th magnetic bead B5 and the 12 Y capacitor C y12;
The first end of the 11 Y capacitor C y11 is the live wire end of resistance-capacitance network 101, the 11 the second end of Y capacitor C y11 and the first end of the 12 Y capacitor C y12 are connected to the first end of the 5th magnetic bead B5 altogether, the second end of the 5th magnetic bead B5 is the ground end of resistance-capacitance network 101, and the second end of the 12 Y capacitor C y12 is the zero line side of resistance-capacitance network 101.Wherein, the 5th magnetic bead B5 is resistance element, and the 11 Y capacitor C y11 and the 12 Y capacitor C y12 are capacitive element.
In the utility model the 6th embodiment, as shown in Figure 7, resistance-capacitance network 101 comprises:
The 13 Y capacitor C y13, the 6th magnetic bead B6, the 6th resistance R 6 and the 14 Y capacitor C y14;
The first end of the 13 Y capacitor C y13 is the live wire end of resistance-capacitance network 101, the 13 the second end of Y capacitor C y13 and the first end of the 14 Y capacitor C y14 are connected to the first end of the 6th magnetic bead B6 altogether, the second end of the 6th magnetic bead B6 connects the first end of the 6th resistance R 6, the second end of the 6th resistance R 6 is the ground end of resistance-capacitance network 101, and the second end of the 14 Y capacitor C y14 is the zero line side of resistance-capacitance network 101.Wherein, the 6th magnetic bead B6 and the 6th resistance R 6 are resistance element, and the 13 Y capacitor C y13 and the 14 Y capacitor C y14 are capacitive element.
In the utility model the first embodiment to the six embodiment, resistance element in resistance-capacitance network 101 and capacitive element have formed a filter network with different elements and annexation, it is except can effectively suppressing electromagnetic interference, can also when resonance, reduce resonance peak, therefore, above-mentioned filter circuit 100 can make the Electro Magnetic Compatibility of air conditioner meet better corresponding electromagnetic compatibility standard, improves the overall performance of air conditioner.
In order to make filter circuit 100, can give full play to its inhibitory action to electromagnetic interference, the inductance value span of common mode inductance L1 can be preferably [2mH, 16mH], the capacitance span of the one X capacitor C x1 and the 2nd X capacitor C x2 can be preferably [0.47 μ F, 1.5 μ F], the capacitance span of the one Y capacitor C y1 and the 2nd Y capacitor C y2 can be preferably [470pF, 10nF]; The resistance span of above-mentioned the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5 and the 6th resistance R 6 can be preferably [10ohm, 200ohm], the resistance span of the first above-mentioned magnetic bead B1, the second magnetic bead B2, the 3rd magnetic bead B3, the 4th magnetic bead B4, the 5th magnetic bead B5 and the 6th magnetic bead B6 can be preferably [100ohm, 10kohm].
What the utility model embodiment provided comprises an X capacitor C x1, resistance-capacitance network 101, common mode inductance L1, a Y capacitor C y1, the 2nd Y capacitor C y2 and the 2nd X capacitor C x2 for suppressing the filter circuit 100 of electromagnetic interference, wherein, resistance-capacitance network comprises resistance element and capacitive element; The filter circuit that comprises above-mentioned capacitive element, inductive element and resistance element by employing, not only can realize conventional low-pass filtering function, in each circuit module fast handover procedures of rear class, suppress electromagnetic interference, the resonance peak producing in the time of can also effectively reducing circuit generation resonance, makes the Electro Magnetic Compatibility of air conditioner can meet better corresponding electromagnetic compatibility standard.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. for suppressing a filter circuit for electromagnetic interference, be connected a plurality of circuit module power supplies that described power circuit is rear class with power circuit; It is characterized in that, described filter circuit comprises:
The one X electric capacity, resistance-capacitance network, common mode inductance, a Y electric capacity, the 2nd Y electric capacity and the 2nd X electric capacity;
The first end of a described X electric capacity, the live wire end of described resistance-capacitance network and the first end of described common mode inductance are all connected in alternating current fire wire, the first end of the second end of described common mode inductance and the first end of a described Y electric capacity and described the 2nd X electric capacity is connected to the live wire end of described power circuit altogether, the second end of a described X electric capacity, the 3rd end of the zero line side of described resistance-capacitance network and described common mode inductance is all connected in alternating current zero line, the ground end ground connection of described resistance-capacitance network, the second end of the 4th end of described common mode inductance and the first end of described the 2nd Y electric capacity and described the 2nd X electric capacity is connected to the zero line side of described power circuit altogether, the second end of the second end of a described Y electric capacity and described the 2nd Y electric capacity is connected to ground altogether, described resistance-capacitance network comprises resistance element and capacitive element, when switching fast between described a plurality of circuit modules, the electromagnetic interference that described resistance-capacitance network produces described power circuit suppresses to process.
2. filter circuit as claimed in claim 1, is characterized in that, described resistance-capacitance network comprises:
The 3rd Y electric capacity, the first resistance, the second resistance and the 4th Y electric capacity;
The first end of described the 3rd Y electric capacity is the live wire end of described resistance-capacitance network, the second end of described the 3rd Y electric capacity connects the first end of described the first resistance, the ground end that the common contact of the second end of described the first resistance and the first end of described the second resistance is described resistance-capacitance network, the second end of described the second resistance connects the first end of described the 4th Y electric capacity, the zero line side that the second end of described the 4th Y electric capacity is described resistance-capacitance network.
3. filter circuit as claimed in claim 1, is characterized in that, described resistance-capacitance network comprises:
The 5th Y electric capacity, the first magnetic bead, the second magnetic bead and the 6th Y electric capacity;
The first end of described the 5th Y electric capacity is the live wire end of described resistance-capacitance network, the second end of described the 5th Y electric capacity connects the first end of described the first magnetic bead, the ground end that the common contact of the second end of described the first magnetic bead and the first end of described the second magnetic bead is described resistance-capacitance network, the second end of described the second magnetic bead connects the first end of described the 6th Y electric capacity, the zero line side that the second end of described the 6th Y electric capacity is described resistance-capacitance network.
4. filter circuit as claimed in claim 1, is characterized in that, described resistance-capacitance network comprises:
The 7th Y electric capacity, the 3rd magnetic bead, the 3rd resistance, the 4th resistance, the 4th magnetic bead and the 8th Y electric capacity;
The first end of described the 7th Y electric capacity is the live wire end of described resistance-capacitance network, described the 3rd magnetic bead is connected between the second end of described the 7th Y electric capacity and the first end of described the 3rd resistance, the ground end that the common contact of the second end of described the 3rd resistance and the first end of described the 4th resistance is described resistance-capacitance network, described the 4th magnetic bead is connected between the second end of described the 4th resistance and the first end of described the 8th Y electric capacity, the zero line side that the second end of described the 8th Y electric capacity is described resistance-capacitance network.
5. filter circuit as claimed in claim 1, is characterized in that, described resistance-capacitance network comprises:
The 9th Y electric capacity, the 5th resistance and the tenth Y electric capacity;
The first end of described the 9th Y electric capacity is the live wire end of described resistance-capacitance network, the second end of described the 9th Y electric capacity and the first end of described the tenth Y electric capacity are connected to the first end of described the 5th resistance altogether, the ground end that the second end of described the 5th resistance is described resistance-capacitance network, the zero line side that the second end of described the tenth Y electric capacity is described resistance-capacitance network.
6. filter circuit as claimed in claim 1, is characterized in that, described resistance-capacitance network comprises:
The 11 Y electric capacity, the 5th magnetic bead and the 12 Y electric capacity;
The first end of described the 11 Y electric capacity is the live wire end of described resistance-capacitance network, the second end of described the 11 Y electric capacity and the first end of described the 12 Y electric capacity are connected to the first end of described the 5th magnetic bead altogether, the ground end that the second end of described the 5th magnetic bead is described resistance-capacitance network, the zero line side that the second end of described the 12 Y electric capacity is described resistance-capacitance network.
7. filter circuit as claimed in claim 1, is characterized in that, described resistance-capacitance network comprises:
The 13 Y electric capacity, the 6th magnetic bead, the 6th resistance and the 14 Y electric capacity;
The first end of described the 13 Y electric capacity is the live wire end of described resistance-capacitance network, the second end of described the 13 Y electric capacity and the first end of described the 14 Y electric capacity are connected to the first end of described the 6th magnetic bead altogether, the second end of described the 6th magnetic bead connects the first end of described the 6th resistance, the ground end that the second end of described the 6th resistance is described resistance-capacitance network, the zero line side that the second end of described the 14 Y electric capacity is described resistance-capacitance network.
8. an air conditioner, comprises power circuit and a plurality of circuit module, it is characterized in that, described air conditioner also comprise as described in claim 1 to 7 any one for suppressing the filter circuit of electromagnetic interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320127.7U CN203933387U (en) | 2014-06-16 | 2014-06-16 | A kind of for suppressing filter circuit and the air conditioner of electromagnetic interference |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420320127.7U CN203933387U (en) | 2014-06-16 | 2014-06-16 | A kind of for suppressing filter circuit and the air conditioner of electromagnetic interference |
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| CN203933387U true CN203933387U (en) | 2014-11-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389760A (en) * | 2014-11-28 | 2015-03-04 | 快意（江门）压缩机有限公司 | Domestic oilless air compressor |
| CN106026073A (en) * | 2015-03-25 | 2016-10-12 | 大众汽车有限公司 | Potential-free DC voltage network |
| CN106545979A (en) * | 2016-12-09 | 2017-03-29 | 广东美的制冷设备有限公司 | Air-conditioner electric control gear and air-conditioner |
| CN107204704A (en) * | 2016-03-18 | 2017-09-26 | 广东美的生活电器制造有限公司 | Mixer and the electromagnetic interference suppression circuit for mixer |
| CN107359790A (en) * | 2017-08-24 | 2017-11-17 | 深圳创维－Rgb电子有限公司 | A kind of electromagnetic compatibility circuit, TV power supply and television set |
| CN109861509A (en) * | 2018-12-07 | 2019-06-07 | 天津津航计算技术研究所 | A kind of electric source filter circuit inhibiting aeronautical data loading device electromagnetic interference |
-
2014
- 2014-06-16 CN CN201420320127.7U patent/CN203933387U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389760A (en) * | 2014-11-28 | 2015-03-04 | 快意（江门）压缩机有限公司 | Domestic oilless air compressor |
| CN106026073A (en) * | 2015-03-25 | 2016-10-12 | 大众汽车有限公司 | Potential-free DC voltage network |
| CN107204704A (en) * | 2016-03-18 | 2017-09-26 | 广东美的生活电器制造有限公司 | Mixer and the electromagnetic interference suppression circuit for mixer |
| CN107204704B (en) * | 2016-03-18 | 2020-12-22 | 广东美的生活电器制造有限公司 | Mixer and be used for electromagnetic interference suppression circuit of mixer |
| CN106545979A (en) * | 2016-12-09 | 2017-03-29 | 广东美的制冷设备有限公司 | Air-conditioner electric control gear and air-conditioner |
| CN107359790A (en) * | 2017-08-24 | 2017-11-17 | 深圳创维－Rgb电子有限公司 | A kind of electromagnetic compatibility circuit, TV power supply and television set |
| CN109861509A (en) * | 2018-12-07 | 2019-06-07 | 天津津航计算技术研究所 | A kind of electric source filter circuit inhibiting aeronautical data loading device electromagnetic interference |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20141105 |