CN203734887U - LED lamp brightness adjusting circuit - Google Patents
LED lamp brightness adjusting circuit Download PDFInfo
- Publication number
- CN203734887U CN203734887U CN201420007989.4U CN201420007989U CN203734887U CN 203734887 U CN203734887 U CN 203734887U CN 201420007989 U CN201420007989 U CN 201420007989U CN 203734887 U CN203734887 U CN 203734887U
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- resistance
- triode
- positive pole
- led lamp
- storage battery
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Abstract
An LED lamp brightness adjusting circuit comprises a triode, a potentiometer and a constant current driver chip. The type of the constant current driver chip is CN5611; a VDD pin of the constant current driver chip is connected with the anode of a storage battery, and an LED pin is connected with a cathode of an LED lamp; the anode of the LED lamp is connected with the anode of the storage battery; a stationary contact and a moving contact of the potentiometer is connected with the anode of the storage battery, and the other stationary contact of the potentiometer is connected with an ISET pin of the constant current driver chip and the collector electrode of the triode; a GND pin of the constant current driver chip and the emitter electrode of the triode are respectively grounded; the base electrode of the triode is connected with an anode of a solar cell panel; and the cathode of the solar cell panel and the cathode of the storage battery are respectively grounded. According to the LED lamp brightness adjusting circuit, resistance adjustment of the potentiometer is analog quantity adjustment, and the brightness of the LED lamp can be continuously adjusted to meet light environment demands of users.
Description
Technical field
The utility model relates to light fixture control field, particularly relates to a kind of LED lamp brightness regulating circuit.
Background technology
Full-fledged along with LED technology, LED, as high-new technology products, is widely used in the fields such as street illumination, architectural lighting, Landscape Lighting, stage illumination, lighting, teaching illumination.Traditional LED light fixture mainly adopts civil power as power supply.Along with the development and use of new forms of energy, solar energy is by entering lighting field.Become electric energy by solar panel by transform light energy daytime, lithium battery charged, for LED lamp being acted in collusion to make each other's confessions electric night.
LED light fixture is equipped with brightness control function, and traditional brightness regulation, mainly by digital regulated form, arranges multiple gears in brightness regulating circuit, is converted gear and realized the brightness regulation of LED light fixture by knob.But, because the gear that can arrange is limited, conventionally only can realize several different brightness regulation to LED light fixture, be difficult to meet the demand of user to lamplight brightness environment.
Utility model content
Based on this, be necessary only can realize for traditional brightness regulation the adjusting of several different brightness, be difficult to meet the problem of user to light environment demand, providing a kind of can carry out the LED lamp brightness regulating circuit regulating continuously to the brightness of LED light fixture.
A kind of LED lamp brightness regulating circuit, comprise triode, potentiometer and constant-current driven chip, the model of described constant-current driven chip is CN5611, the VDD pin of described constant-current driven chip connects the positive pole of storage battery, LED pin connects the negative pole of described LED light fixture, the positive pole of described LED light fixture connects the positive pole of described storage battery, fixed contact of described potentiometer and moving contact connect the positive pole of described storage battery, another fixed contact connects respectively the ISET pin of described constant-current driven chip and the collector electrode of described triode, the GND pin of described constant-current driven chip and the emitter of described triode be ground connection respectively, the base stage of described triode connects the positive pole of described solar panel, the negative pole of described solar panel and the negative pole of described storage battery be ground connection respectively.
Therein in an embodiment, also comprise the first resistance and the second resistance, the positive pole of storage battery described in one termination of described the first resistance, a described fixed contact and the described moving contact of potentiometer described in another termination, described another fixed contact of potentiometer described in one termination of described the second resistance, the collector electrode of triode described in another termination.
Therein in an embodiment, also comprise the 3rd resistance and the 4th resistance, the positive pole of solar panel described in one termination of described the 3rd resistance, the other end connects respectively the base stage of described triode and one end of described the 4th resistance, the other end ground connection of described the 4th resistance.
In an embodiment, also comprise diode therein, the positive pole of described diode connects the positive pole of described solar panel, and the negative pole of described diode connects the positive pole of described storage battery.
In an embodiment, described triode is NPN pipe therein.
Above-mentioned LED lamp brightness regulating circuit, adjust the size of current of the ISET pin of input constant-current driven chip by the resistance of regulator potentiometer, and then the output current of control pin, thereby adjust the brightness of LED light fixture, the resistance of potentiometer is adjusted into analog quantity adjustment, can regulate continuously the brightness of LED light fixture, to meet the demand of user to light environment.
Brief description of the drawings
Fig. 1 is the schematic diagram of the LED lamp brightness regulating circuit of an embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, in one embodiment, a kind of LED lamp brightness regulating circuit, comprises triode Q1, potentiometer RX and constant-current driven chip U1.The model of constant-current driven chip U1 is CN5611, the VDD pin of constant-current driven chip U1 connects the positive pole of storage battery BT, LED pin connects the negative pole of LED light fixture, the positive pole of LED light fixture connects the positive pole of storage battery BT, conventionally, LED light fixture comprises the light-emitting diode L1 of multiple parallel connections ... Ln, is in series with control switch K1 in the anodal outlet line of storage battery BT, lights or extinguishes LED light fixture for controlling.Fixed contact of potentiometer RX and moving contact connect the positive pole of storage battery BT, another fixed contact connects respectively the ISET pin of constant-current driven chip U1 and the collector electrode of triode Q1, the GND pin of constant-current driven chip U1 and the emitter of triode Q1 be ground connection respectively, the base stage of triode Q1 connects the positive pole of solar panel SR, and the negative pole of the negative pole of solar panel SR and storage battery BT is ground connection respectively.Triode Q1 is NPN pipe.
Above-mentioned LED lamp brightness regulating circuit, adjust the size of current of the ISET pin of input constant-current driven chip U1 by the resistance of regulator potentiometer RX, and then the output current of control LED pin, thereby adjust the brightness of LED light fixture, the resistance of potentiometer RX is adjusted into analog quantity adjustment, can regulate continuously the brightness of LED light fixture, to meet the demand of user to light environment.
In the present embodiment, LED lamp brightness regulating circuit also comprises the first resistance R 1 and the second resistance R 2, the positive pole of one termination storage battery BT of the first resistance R 1, fixed contact of another termination potentiometer RX and moving contact, another fixed contact of one termination potentiometer RX of the second resistance R 2, the collector electrode of another termination triode Q1.The first resistance R 1 and the second resistance R 2 have dividing potential drop effect.
In the present embodiment, LED lamp brightness regulating circuit also comprises the 3rd resistance R 3 and the 4th resistance R 4, the positive pole of one termination solar panel SR of the 3rd resistance R 3, the other end connects respectively one end of base stage and the 4th resistance R 4 of triode Q1, the other end ground connection of the 4th resistance R 4.By adjusting R3 and/or R4, the voltage that can adjust triode Q1 conducting time, solar panel SR need to export.
In the present embodiment, LED lamp brightness regulating circuit also comprises diode D1, and the positive pole of diode D1 connects the positive pole of solar panel SR, and the negative pole of diode D1 connects the positive pole of storage battery BT.Diode D1 can prevent the reversed charge of storage battery BT to solar panel SR effectively.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (5)
1. a LED lamp brightness regulating circuit, it is characterized in that, comprise triode, potentiometer and constant-current driven chip, the model of described constant-current driven chip is CN5611, the VDD pin of described constant-current driven chip connects the positive pole of storage battery, LED pin connects the negative pole of described LED light fixture, the positive pole of described LED light fixture connects the positive pole of described storage battery, fixed contact of described potentiometer and moving contact connect the positive pole of described storage battery, another fixed contact connects respectively the ISET pin of described constant-current driven chip and the collector electrode of described triode, the GND pin of described constant-current driven chip and the emitter of described triode be ground connection respectively, the base stage of described triode connects the positive pole of solar panel, the negative pole of described solar panel and the negative pole of described storage battery be ground connection respectively.
2. LED lamp brightness regulating circuit according to claim 1, it is characterized in that, also comprise the first resistance and the second resistance, the positive pole of storage battery described in one termination of described the first resistance, a described fixed contact and the described moving contact of potentiometer described in another termination, described another fixed contact of potentiometer described in one termination of described the second resistance, the collector electrode of triode described in another termination.
3. LED lamp brightness regulating circuit according to claim 1, it is characterized in that, also comprise the 3rd resistance and the 4th resistance, the positive pole of solar panel described in one termination of described the 3rd resistance, the other end connects respectively the base stage of described triode and one end of described the 4th resistance, the other end ground connection of described the 4th resistance.
4. LED lamp brightness regulating circuit according to claim 1, is characterized in that, also comprises diode, and the positive pole of described diode connects the positive pole of described solar panel, and the negative pole of described diode connects the positive pole of described storage battery.
5. LED lamp brightness regulating circuit according to claim 1, is characterized in that, described triode is NPN pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007989.4U CN203734887U (en) | 2014-01-06 | 2014-01-06 | LED lamp brightness adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007989.4U CN203734887U (en) | 2014-01-06 | 2014-01-06 | LED lamp brightness adjusting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734887U true CN203734887U (en) | 2014-07-23 |
Family
ID=51204924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420007989.4U Expired - Fee Related CN203734887U (en) | 2014-01-06 | 2014-01-06 | LED lamp brightness adjusting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203734887U (en) |
-
2014
- 2014-01-06 CN CN201420007989.4U patent/CN203734887U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20170106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |