CN106604461B - Color LED lamp current control circuit under both of which - Google Patents
Color LED lamp current control circuit under both of which Download PDFInfo
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- CN106604461B CN106604461B CN201611143171.5A CN201611143171A CN106604461B CN 106604461 B CN106604461 B CN 106604461B CN 201611143171 A CN201611143171 A CN 201611143171A CN 106604461 B CN106604461 B CN 106604461B
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- resistance
- triode
- led lamp
- color led
- control circuit
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- Led Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention discloses color LED lamp current control circuit under both of which, and color LED lamp current control circuit includes under the both of which：Light adjusting circuit output control level signal, and it is electrically connected to the base stage of triode；The collector of triode is connected to power supply by 3rd resistor, and passes through the 4th resistance eutral grounding；The emitter of triode is grounded；The collector of triode is also attached to the grid of metal-oxide-semiconductor, and the drain electrode of metal-oxide-semiconductor is connected to one end of one end and the 7th resistance of the 6th resistance by the 5th resistance, and forms the current output terminal of connection color lamp；The other end of 6th resistance is connected to power supply, the other end ground connection of the 7th resistance；The source electrode of metal-oxide-semiconductor is grounded.The problem of color LED lamp current control circuit overcomes day mode and night mode in the prior art and needs color lamp brightness different, color LED lamp electric current can not be adjusted under the both of which.
Description
Technical field
The present invention relates to color LED lamp current control circuits under both of which.
Background technology
Airbome liquid crystal display module generally can all design two kinds of operating modes, day mode and night mode in design,
Night mode generally has night viewing compatible requirement.
Night viewing compatible also implies that the night vision imaging system system of enemy is difficult or impossible to find have night vision a long way off
The illuminator of compatible performance.The light sources such as common incandescence, electroluminescent light, LCD MODULE and LED can be because of the IR of transmitting
(Infra-Red, infrared) light, including a small amount of feux rouges interference night vision imaging system in the range that its night vision imaging system can receive
System, and lead to the generation of following phenomenon：(1) IR can cause the eyepiece of night vision device to generate halation phenomenon, reduce night vision imaging system
The readability of image；(2) excess IR can encourage the automatic light modulation device of night vision imaging system, and further decrease night vision imaging system
The susceptibility and resolution ratio of system；(3) cabin inner light source can lead to night vision imaging system ghost image by the IR that display surface reflection generates.
One, without compatibility of night vision design or poorly designed illuminator, will produce the naked flash lamp effect under environment
It answers, causes pilot to lose and regard, even result in night vision imaging system cisco unity malfunction or destruction.Therefore it is to be ensured that night vision imaging
The successful application of system on board the aircraft, the realization of compatibility of night vision are most important.One good night viewing compatible sexual system, can be with
Ensure pilot in night flying, it can be by directly visually obtaining interior of aircraft information and reducing night vision imaging system
Image enhancement ability ensures the normal work of night vision imaging system.
Most of present airbome liquid crystal display module backlight meets night viewing compatible requirement using multi-colored led complementary color, gets rid of
Traditional method for installing night vision-compatible light filter in LCD MODULE is abandoned, it is simultaneous to meet night vision using multi-colored led complementary color
It is to adjust the dim signal of polychromatic light by the data of the acquisition of controller detection chromaticity transducer to hold desired specific method.
The backlight of the general day mode of airbome liquid crystal display module is mixed using white lamp, orange lamp, blue lamp, night mould
The required brightness of formula is relatively low, and the backlight of general LCD MODULE night mode is mixed using orange lamp, green light, blue lamp tri coloured lantern
Conjunction mode.
Since day mode and night mode need color lamp brightness different, the certain situation of configuration voltage at color lamp both ends
Under, different value need to be designed by the electric current of color lamp under day mode and night mode both of which.
Invention content
It is color under the both of which the object of the present invention is to provide color LED lamp current control circuit under a kind of both of which
Color LED light current control circuit overcomes day mode and night mode in the prior art and needs color lamp brightness different, nothing
The problem of color LED lamp electric current is adjusted in method.
To achieve the goals above, the present invention provides color LED lamp current control circuit under a kind of both of which, this two
Color LED lamp current control circuit includes under kind pattern：
Light adjusting circuit, triode, metal-oxide-semiconductor, the 6th resistance, the 7th resistance, 3rd resistor, the 4th resistance and the 5th resistance；
Wherein,
The light adjusting circuit output control level signal, and it is electrically connected to the base stage of the triode；The triode
Collector is connected to power supply by 3rd resistor, and passes through the 4th resistance eutral grounding；The emitter of the triode is grounded；Described three
The collector of pole pipe is also attached to the grid of the metal-oxide-semiconductor, and the drain electrode of the metal-oxide-semiconductor is connected to described by the 5th resistance
One end of one end of the 6th resistance and the 7th resistance, and form the current output terminal of connection color lamp；6th resistance
The other end is connected to power supply, the other end ground connection of the 7th resistance；The source electrode of the metal-oxide-semiconductor is grounded.
Preferably, color LED lamp current control circuit further includes under the both of which：
Second resistance, one end of the second resistance are connected to the output end of the light adjusting circuit, and the other end is connected to institute
State the base stage of triode.
Preferably, color LED lamp current control circuit further includes under the both of which：
First resistor, one end of the first resistor be connected to the light adjusting circuit output end and the second resistance it
Between, the other end of the first resistor is connected to the power supply.
Preferably, the power supply is the power supply for exporting 3.3V voltages.
Preferably, the light adjusting circuit is FPGA circuitry or single chip circuit.
Preferably, in the case of high level signal to the triode of light adjusting circuit output, the triode
It opens, and the grounded-grid of the metal-oxide-semiconductor does not work；
In the case of low level signal to the triode of light adjusting circuit output, the triode does not work,
And the metal-oxide-semiconductor is opened.
By above-mentioned embodiment, the present invention can reduce power consumption, greatly improve back light unit and liquid crystal screen component
Between compatibility, and circuit is realized simple, and pure hardware circuit composition does not use controller and other special chips, real
It is existing of low cost.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the circuit structure diagram of color LED lamp current control circuit under a kind of both of which for illustrating the present invention.
Reference sign
R1 first resistor R2 second resistances
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Color LED lamp current control circuit under a kind of both of which of present invention offer, which is characterized in that under the both of which
Color LED lamp current control circuit includes：
Light adjusting circuit, triode, metal-oxide-semiconductor, the 6th resistance, the 7th resistance, 3rd resistor, the 4th resistance and the 5th resistance；
Wherein,
The light adjusting circuit output control level signal, and it is electrically connected to the base stage of the triode；The triode
Collector is connected to power supply by 3rd resistor, and passes through the 4th resistance eutral grounding；The emitter of the triode is grounded；Described three
The collector of pole pipe is also attached to the grid of the metal-oxide-semiconductor, and the drain electrode of the metal-oxide-semiconductor is connected to described by the 5th resistance
One end of one end of the 6th resistance and the 7th resistance, and form the current output terminal of connection color lamp；6th resistance
The other end is connected to power supply, the other end ground connection of the 7th resistance；The source electrode of the metal-oxide-semiconductor is grounded.
By above-mentioned embodiment, as shown in Figure 1, the electric current of orange lamp is generated by electric resistance partial pressure, when day mode：Net
It is designated as the high level signal that D_N is the output of the controllers such as FPGA, microcontroller, Q1 (triode) opens work, the grid of Q2 (metal-oxide-semiconductor)
Pole is grounded, and is not worked, and the electric current of orange lamp is that R6 and R7 partial pressures generate；When night mode：Network mark be D_N be FPGA, microcontroller etc.
The low level signal of controller output, Q1 (triode) do not work, and the grid of Q2 (metal-oxide-semiconductor) is beating for R3 and R4 partial pressure generations
The voltage of metal-oxide-semiconductor is opened, the electric current of Q2 work, orange lamp generates for resistance after R5 and R7 parallel connections and R6 partial pressures, and electric current becomes smaller.Green light and
Identical control circuit processing can be used in blue lamp.
In a kind of specific implementation mode of the present invention, in order to realize preliminary partial pressure, color LED lamp under the both of which
Current control circuit further includes：
Second resistance, one end of the second resistance are connected to the output end of the light adjusting circuit, and the other end is connected to institute
State the base stage of triode.
In this kind of embodiment, color LED lamp current control circuit further includes under the both of which：
First resistor, one end of the first resistor be connected to the light adjusting circuit output end and the second resistance it
Between, the other end of the first resistor is connected to power supply.
In a kind of specific implementation mode of the present invention, the power supply is the power supply for exporting 3.3V voltages.
In a kind of specific implementation mode of the present invention, the light adjusting circuit is FPGA circuitry or single chip circuit.
In a kind of specific implementation mode of the present invention, in the high level signal that the light adjusting circuit exports to three pole
In the case of pipe, the triode is opened, and the grounded-grid of the metal-oxide-semiconductor does not work；
In the case of low level signal to the triode of light adjusting circuit output, the triode does not work,
And the metal-oxide-semiconductor is opened.
By above-mentioned embodiment, the adjusting of the electric current of LED light may be implemented,
Since day mode and night mode need color lamp brightness different, the certain situation of configuration voltage at color lamp both ends
Under, different value need to be designed by the electric current of color lamp under day mode and night mode both of which.Therefore, the present invention designs
Color LED lamp current control circuit under both of which, to solving the output of different voltages under both of which.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (5)
1. color LED lamp current control circuit under a kind of both of which, which is characterized in that color LED lamp electricity under the both of which
Flow control circuit includes：
Light adjusting circuit, triode, metal-oxide-semiconductor, the 6th resistance, the 7th resistance, 3rd resistor, the 4th resistance and the 5th resistance；Wherein,
The light adjusting circuit output control level signal, and it is electrically connected to the base stage of the triode；The current collection of the triode
Pole is connected to power supply by 3rd resistor, and passes through the 4th resistance eutral grounding；The emitter of the triode is grounded；The triode
Collector be also attached to the grid of the metal-oxide-semiconductor, the drain electrode of the metal-oxide-semiconductor is connected to the described 6th by the 5th resistance
One end of one end of resistance and the 7th resistance, and form the current output terminal of connection color lamp；6th resistance it is another
End is connected to the power supply, the other end ground connection of the 7th resistance；The source electrode of the metal-oxide-semiconductor is grounded；
In day mode in the case of the high level signal to the triode of the light adjusting circuit output, the triode
It opens, and the grounded-grid of the metal-oxide-semiconductor does not work；
In night mode in the case of the low level signal to the triode of the light adjusting circuit output, the triode
It does not work, and the metal-oxide-semiconductor is opened.
2. color LED lamp current control circuit under both of which according to claim 1, which is characterized in that two kinds of moulds
Color LED lamp current control circuit further includes under formula：
Second resistance, one end of the second resistance are connected to the output end of the light adjusting circuit, and the other end is connected to described three
The base stage of pole pipe.
3. color LED lamp current control circuit under both of which according to claim 2, which is characterized in that two kinds of moulds
Color LED lamp current control circuit further includes under formula：
One end of first resistor, the first resistor is connected between the output end of the light adjusting circuit and the second resistance,
The other end of the first resistor is connected to the power supply.
4. color LED lamp current control circuit under both of which according to claim 1, which is characterized in that the power supply
To export the power supply of 3.3V voltages.
5. color LED lamp current control circuit under both of which according to claim 1, which is characterized in that the light modulation
Circuit is FPGA circuitry or single chip circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143171.5A CN106604461B (en) | 2016-12-13 | 2016-12-13 | Color LED lamp current control circuit under both of which |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143171.5A CN106604461B (en) | 2016-12-13 | 2016-12-13 | Color LED lamp current control circuit under both of which |
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| Publication Number | Publication Date |
|---|---|
| CN106604461A CN106604461A (en) | 2017-04-26 |
| CN106604461B true CN106604461B (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611143171.5A Active CN106604461B (en) | 2016-12-13 | 2016-12-13 | Color LED lamp current control circuit under both of which |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811530A (en) * | 2011-06-02 | 2012-12-05 | 海洋王照明科技股份有限公司 | Voltage-rising type LED driving circuit and lamp |
| CN103747576A (en) * | 2013-12-27 | 2014-04-23 | 中航华东光电有限公司 | Driving circuit of LED backlight and driving method thererof |
| CN203797409U (en) * | 2014-03-14 | 2014-08-27 | 长城信息产业股份有限公司 | Night-vision-compatible bottom-light-type LED backlight source |
| CN204117572U (en) * | 2014-09-24 | 2015-01-21 | 中航华东光电有限公司 | A kind of airbome liquid crystal display with night vision compatible function |
| CN204178088U (en) * | 2014-10-22 | 2015-02-25 | 天津通广集团振通电子有限公司 | A kind of intelligent backlight module possessing night vision compatible function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI523580B (en) * | 2013-02-22 | 2016-02-21 | Compatible with LED ballast with electronic ballast with preheat current |
-
2016
- 2016-12-13 CN CN201611143171.5A patent/CN106604461B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811530A (en) * | 2011-06-02 | 2012-12-05 | 海洋王照明科技股份有限公司 | Voltage-rising type LED driving circuit and lamp |
| CN103747576A (en) * | 2013-12-27 | 2014-04-23 | 中航华东光电有限公司 | Driving circuit of LED backlight and driving method thererof |
| CN203797409U (en) * | 2014-03-14 | 2014-08-27 | 长城信息产业股份有限公司 | Night-vision-compatible bottom-light-type LED backlight source |
| CN204117572U (en) * | 2014-09-24 | 2015-01-21 | 中航华东光电有限公司 | A kind of airbome liquid crystal display with night vision compatible function |
| CN204178088U (en) * | 2014-10-22 | 2015-02-25 | 天津通广集团振通电子有限公司 | A kind of intelligent backlight module possessing night vision compatible function |
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| CN106604461A (en) | 2017-04-26 |
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