CN203072215U - LED driver capable of inhibiting interference on car radio frequency ranges - Google Patents
LED driver capable of inhibiting interference on car radio frequency ranges Download PDFInfo
- Publication number
- CN203072215U CN203072215U CN 201320017271 CN201320017271U CN203072215U CN 203072215 U CN203072215 U CN 203072215U CN 201320017271 CN201320017271 CN 201320017271 CN 201320017271 U CN201320017271 U CN 201320017271U CN 203072215 U CN203072215 U CN 203072215U
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- CN
- China
- Prior art keywords
- control circuit
- led driver
- frequency noise
- noise control
- constant current
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an LED driver capable of inhibiting interference on car radio frequency ranges. The LED driver capable of inhibiting interference on car radio frequency ranges comprises a first high frequency noise control circuit, an LED driver constant voltage/constant current control circuit and a second high frequency noise control circuit, wherein the first high frequency noise control circuit and the second high frequency noise control circuit are respectively arranged an input end and an output end of the LED driver constant voltage/constant current control circuit. The LED driver capable of inhibiting interference on car radio frequency ranges can effectively filter high frequency noise generated by the LED driver during work, enables a radio to be listened normally at any frequency range from FM88 to108MHz and can effectively improve use effects of the vehicle radio.
Description
Technical field
The utility model relates to a kind of led driver, in particular a kind of led driver that can suppress the auto radio band interference.
Background technology
The LED lighting technology more and more has been widely used the automotive lighting field, but because led driver can produce high-frequency noise when work, after LED is lighted, the high frequency noise of its generation will interfere with broadcast receiver (especially broadcast receiver is under the situation of FM 88 ~ 108MHz) to the reception of signal, wireless certain band frequency can't normally be received, and then have influence on the occupant to wireless use.
Therefore, prior art has yet to be improved and developed.
The utility model content
The purpose of this utility model is to provide a kind of led driver that can suppress the auto radio band interference, produces high frequency noise to the technical problem of the reception of auto radio band frequency signal to solve the led driver that exists in the above-mentioned prior art.
The technical solution of the utility model is as follows:
A kind of led driver that can suppress the auto radio band interference, wherein, comprise the first high-frequency noise control circuit, led driver constant voltage/constant current control circuit and the second high-frequency noise control circuit, the described first high-frequency noise control circuit and the second high-frequency noise control circuit are separately positioned on input and the output of led driver constant voltage/constant current control circuit.
The described led driver that can suppress the auto radio band interference, wherein, the described first high-frequency noise control circuit and the second high-frequency noise control circuit comprise a common mode inductance and a ceramic disc capacitor respectively, the common mode inductance of the described first high-frequency noise control circuit and the second high-frequency noise control circuit and ceramic disc capacitor are connected in parallel on respectively between the positive and negative electrode of the input of described led driver constant voltage/constant current control circuit and output, and described ceramic disc capacitor is arranged on nearly led driver constant voltage/constant current control circuit side.
The described led driver that can suppress the auto radio band interference, wherein, the inductance value of the common mode inductance of the described first high-frequency noise control circuit and the second high-frequency noise control circuit is set to 100uH ~ 800 uH; The capacity setting of the ceramic disc capacitor of the described first high-frequency noise control circuit and the second high-frequency noise control circuit is 0.001uF ~ 1uF.
The utility model is by setting up the high frequency noise control circuit at the two ends of led driver constant voltage/constant current control circuit, the high-frequency noise that can effectively led driver be produced when working filters out, and makes broadcast receiver can both normally listen under any frequency range of FM 88 ~ 108MHZ.Can effectively improve the result of use of vehicle-mounted radio.
Description of drawings
Fig. 1 is the circuit structure diagram that can suppress in the utility model the led driver of auto radio band interference.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, clear and definite, below further describe with reference to the accompanying drawing the utility model of embodiment that develops simultaneously.
Shown in the circuit structure diagram of the led driver that provides as Fig. 1 the utility model, this circuit specifically comprises three circuit: the first high-frequency noise control circuit, led driver constant voltage/constant current control circuit, the second high-frequency noise control circuit.The first high-frequency noise control circuit is arranged on the input of led driver constant voltage/constant current control circuit, and the second high-frequency noise control circuit is arranged on the output of led driver constant voltage/constant current control circuit.The first high-frequency noise control circuit comprises the first common mode inductance LF2 and the first ceramic disc capacitor C3, the first common mode inductance LF2 and the first ceramic disc capacitor C3 are connected in parallel between the both positive and negative polarity of input of led driver constant voltage/constant current control circuit, and wherein the first ceramic disc capacitor C3 is arranged on by led driver constant voltage/constant current control circuit side; The second high-frequency noise control circuit comprises the second common mode inductance LF1 and the second ceramic disc capacitor C2, the second common mode inductance LF1 and the second ceramic disc capacitor C2 are connected in parallel between the positive and negative electrode of output of led driver constant voltage/constant current control circuit, and the second ceramic disc capacitor C2 is arranged on by led driver constant voltage/constant current control circuit side.
The first high-frequency noise control circuit and the second high-frequency noise control circuit, cooperation can effectively suppress by connecing the high-frequency noise of LED load end through reasonable parameter.Concrete parameter configuration is: the second common mode inductance LF1 and the first common mode inductance LF2 adopt the high magnetic conductivity ferrite magnetic core by two-wire and around 6 ~ 10 circle modes, at 100uH ~ 800 uH, the capacity of the second ceramic disc capacitor C2 and the first ceramic disc capacitor C3 should be controlled between 0.001uF ~ 1uF simultaneously with inductance value control.
The technical scheme that the utility model provides can effectively produce led driver when working high-frequency noise filters out, and makes broadcast receiver can both normally listen under any frequency range of FM 88 ~ 108MHz.Can effectively improve the result of use of vehicle-mounted radio.
Should be understood that, application of the present utility model is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion, for example: can increase a ceramic disc capacitor by the ac/dc voltage input end at LF2 according to the actual requirements, capacity should be controlled between 0. 001uF ~ 1uF, to promote the inhibition to noise.All these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (3)
1. the led driver that can suppress the auto radio band interference is characterized in that, comprises the first high-frequency noise control circuit, led driver constant voltage/constant current control circuit and the second high-frequency noise control circuit; The described first high-frequency noise control circuit and the second high-frequency noise control circuit are separately positioned on input and the output of led driver constant voltage/constant current control circuit.
2. energy according to claim 1 suppresses the led driver to the auto radio band interference, it is characterized in that, the described first high-frequency noise control circuit and the second high-frequency noise control circuit comprise a common mode inductance and a ceramic disc capacitor respectively, the common mode inductance of the described first high-frequency noise control circuit and the second high-frequency noise control circuit and ceramic disc capacitor are connected in parallel on respectively between the positive and negative electrode of the input of described led driver constant voltage/constant current control circuit and output, and described ceramic disc capacitor is arranged on nearly led driver constant voltage/constant current control circuit side.
3. the led driver that can suppress the auto radio band interference according to claim 2 is characterized in that the inductance value of the common mode inductance of the described first high-frequency noise control circuit and the second high-frequency noise control circuit is set to 100uH ~ 800 uH; The capacity setting of the ceramic disc capacitor of the described first high-frequency noise control circuit and the second high-frequency noise control circuit is 0.001uF ~ 1uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017271 CN203072215U (en) | 2013-01-14 | 2013-01-14 | LED driver capable of inhibiting interference on car radio frequency ranges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017271 CN203072215U (en) | 2013-01-14 | 2013-01-14 | LED driver capable of inhibiting interference on car radio frequency ranges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203072215U true CN203072215U (en) | 2013-07-17 |
Family
ID=48770955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320017271 Withdrawn - After Issue CN203072215U (en) | 2013-01-14 | 2013-01-14 | LED driver capable of inhibiting interference on car radio frequency ranges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203072215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079317A (en) * | 2013-01-14 | 2013-05-01 | 广东新昇电业科技股份有限公司 | LED (Light Emitting Diode) driver capable of suppressing interference with car radio frequency bands |
-
2013
- 2013-01-14 CN CN 201320017271 patent/CN203072215U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079317A (en) * | 2013-01-14 | 2013-05-01 | 广东新昇电业科技股份有限公司 | LED (Light Emitting Diode) driver capable of suppressing interference with car radio frequency bands |
| CN103079317B (en) * | 2013-01-14 | 2016-07-06 | 广东新昇电业科技股份有限公司 | A kind of LED driver that can suppress auto radio band interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |