CN204697373U - A kind of vehicle LED drive circuit - Google Patents
A kind of vehicle LED drive circuit Download PDFInfo
- Publication number
- CN204697373U CN204697373U CN201520489540.0U CN201520489540U CN204697373U CN 204697373 U CN204697373 U CN 204697373U CN 201520489540 U CN201520489540 U CN 201520489540U CN 204697373 U CN204697373 U CN 204697373U
- Authority
- CN
- China
- Prior art keywords
- drive circuit
- led drive
- current
- circuit
- main control
- Prior art date
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a kind of drive circuit, a kind of vehicle LED drive circuit in particular, adopt and exchange or direct current supply, power supply washability is strengthened, and constant current can be provided to drive LED, and light intensity is more stable, by PWM or analog voltage, electric current is controlled, thus carry out the adjustment of light intensity, multiple LED can be driven simultaneously, realize high-power driving.Comprise power supply, rectification circuit, filter capacitor C, current sampling resistor R
s, main control unit and LED circuit.Vehicle LED drive circuit adopts Power supply.AC power realizes interchange by rectification circuit and turns direct current.Resistance R
sfor current sampling resistor, at resistance R
scoating-forming voltage, magnitude of voltage is controlled LED drive current size by main control unit collection.Main control unit is as the constant current output and the Current adjustment that regulate maincenter control circuit.
Description
Technical field
The utility model relates to a kind of drive circuit, is a kind of vehicle LED drive circuit in particular.
Background technology
Day by day universal along with automobile, people progressively promote to aspects such as comfort level and safety from walking-replacing tool for the demand of automobile.Meanwhile, LED is widely used in the illuminator of automobile.But the driving stability at present for high-power LED is still not enough, unstable light source can cause very large potential safety hazard when running at high speed.Meanwhile, for different surround lightings and different road conditions, need the adjustable intensity of light of various ways, to ensure fail safe and to improve comfort level.
Summary of the invention
The technical problem that the utility model mainly solves is to provide a kind of vehicle LED drive circuit, direct current or Alternating Current Power Supply can be used, stable drive current can be provided, various ways can be used to regulate drive current, adapt to different environment and road conditions, multiple LED can be driven simultaneously.
For solving the problems of the technologies described above, a kind of vehicle LED power supply circuits of the utility model, comprise power supply, rectification circuit, filter capacitor C, current sampling resistor R
s, main control unit and LED circuit, direct current or Alternating Current Power Supply can be used, stable drive current can be provided, various ways can be used to regulate drive current, adapt to different environment and road conditions, multiple LED can be driven simultaneously.
This vehicle LED drive circuit adopts Power supply.AC power realizes interchange by rectification circuit and turns direct current.Resistance R
sfor current sampling resistor, at resistance R
scoating-forming voltage, magnitude of voltage is controlled LED drive current size by main control unit collection.Main control unit as regulate maincenter control circuit constant current output and Current adjustment.
As the further optimization of this programme, the power supply described in a kind of vehicle LED drive circuit of the utility model exchanges or direct current supply for using.
As the further optimization of this programme, the rectification circuit described in a kind of vehicle LED drive circuit of the utility model is bridge-type half-wave rectifying circuit.
As the further optimization of this programme, the resistance R described in a kind of vehicle LED drive circuit of the utility model
sresistance is 0.13 ohm, required precision 1%.
As the further optimization of this programme, the LED circuit described in a kind of vehicle LED of the utility model drive circuit is connected in series multiple LED.
As the further optimization of this programme, the electric capacity C described in a kind of vehicle LED drive circuit of the utility model is 100UF.
As the further optimization of this programme, the main control unit described in a kind of vehicle LED drive circuit of the utility model is chip PT4115.
The beneficial effect of a kind of vehicle LED drive circuit of the utility model is:
A, this vehicle LED drive circuit adopt and exchange or direct current supply, and power supply washability is strengthened;
B, this vehicle LED drive circuit can provide constant current to drive LED, and light intensity is more stable;
C, this vehicle LED drive circuit control electric current by PWM or analog voltage, thus carry out the adjustment of light intensity;
D, this vehicle LED drive circuit can drive multiple LED simultaneously, realize high-power driving.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific implementation method, the utility model is described in more detail.
Fig. 1 is the circuit diagram of a kind of vehicle LED drive circuit of the utility model.
Fig. 2 is the circuit block diagram of a kind of vehicle LED drive circuit of the utility model.
Embodiment
In FIG: the utility model relates to a kind of drive circuit, be a kind of vehicle LED drive circuit in particular, comprise power supply, rectification circuit, filter capacitor C, current sampling resistor R
s, main control unit and LED circuit, direct current or Alternating Current Power Supply can be used, stable drive current can be provided, various ways can be used to regulate drive current, adapt to different environment and road conditions, multiple LED can be driven simultaneously.
This vehicle LED drive circuit adopts Power supply.AC power realizes interchange by rectification circuit and turns direct current.Resistance R
sfor current sampling resistor, at resistance R
scoating-forming voltage, magnitude of voltage is controlled LED drive current size by main control unit collection.Main control unit as regulate maincenter control circuit constant current output and Current adjustment.
Power supply available alternate or direct current supply, strengthen the selectivity of power supply.Rectification circuit is bridge-type half-wave rectifying circuit, is exchanged turn direct current by the realization of bridge rectifier.Electric capacity C is 100UF, and the direct current after rectification comprises more alternating component, carries out filtering HFS through electric capacity C, obtains galvanic current source.
Resistance R
s, resistance is 0.13 ohm, required precision 1%, and main control unit passes through R
son electric current sample, obtain main control unit by gathering resistance R
son electric current enter calculating R
sthe pressure reduction at two ends, and then control cut-offfing of internal power switch, thus the current constant that control LED flows through.
Main control unit is chip PT4115.This chip can drive 3 power to be the LED of 1W simultaneously.LED circuit can be connected in series multiple LED.Main control unit comprises an analogue enlargement port, and this port can input PWM ripple or analog voltage from outside, is controlled electric current by the duty ratio of PWM or the voltage swing of analog voltage, and then the light intensity of control LED.
Certainly; above-mentioned explanation is not limitation of the utility model; the utility model is also not limited only to above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also belongs to protection range of the present utility model.
Claims (7)
1. a vehicle LED drive circuit, comprises power supply, rectification circuit, filter capacitor C, current sampling resistor R
s, main control unit and LED circuit, it is characterized in that: this vehicle LED drive circuit adopts Power supply; Power supply realizes interchange by rectification circuit and turns direct current; Resistance R
sfor current sampling resistor, at resistance R
scoating-forming voltage, magnitude of voltage is controlled LED drive current size by main control unit collection; Main control unit as regulate maincenter control circuit constant current output and Current adjustment.
2. a kind of vehicle LED drive circuit according to claim 1, is characterized in that: described power supply is direct current or AC power.
3. a kind of vehicle LED drive circuit according to claim 1, is characterized in that: described rectification circuit is bridge-type half-wave rectifying circuit.
4. a kind of vehicle LED drive circuit according to claim 1, is characterized in that: described resistance R
sresistance is 0.13 ohm, required precision 1%.
5. a kind of vehicle LED drive circuit according to claim 1, is characterized in that: described LED circuit is connected in series multiple LED.
6. a kind of vehicle LED drive circuit according to claim 1, is characterized in that: described filter capacitor C is 100UF.
7. a kind of vehicle LED drive circuit according to claim 1, is characterized in that: described main control unit is chip PT4115.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520489540.0U CN204697373U (en) | 2015-07-04 | 2015-07-04 | A kind of vehicle LED drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520489540.0U CN204697373U (en) | 2015-07-04 | 2015-07-04 | A kind of vehicle LED drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204697373U true CN204697373U (en) | 2015-10-07 |
Family
ID=54237619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520489540.0U Expired - Fee Related CN204697373U (en) | 2015-07-04 | 2015-07-04 | A kind of vehicle LED drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204697373U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491731A (en) * | 2016-02-24 | 2016-04-13 | 深圳市益顺电子科技有限公司 | Constant-current high-voltage LED drive chip circuit and drive method thereof |
| CN112333887A (en) * | 2020-10-14 | 2021-02-05 | 深圳篆意科技有限公司 | LED drive circuit |
-
2015
- 2015-07-04 CN CN201520489540.0U patent/CN204697373U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491731A (en) * | 2016-02-24 | 2016-04-13 | 深圳市益顺电子科技有限公司 | Constant-current high-voltage LED drive chip circuit and drive method thereof |
| CN112333887A (en) * | 2020-10-14 | 2021-02-05 | 深圳篆意科技有限公司 | LED drive circuit |
| CN112333887B (en) * | 2020-10-14 | 2023-03-14 | 深圳篆意科技有限公司 | LED drive circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204697373U (en) | A kind of vehicle LED drive circuit | |
| CN203851350U (en) | LED driving circuit and output current ripple controller thereof | |
| CN205142017U (en) | Invertion power supply control system based on DSP | |
| CN204697375U (en) | A kind of LED drive circuit with surge protection | |
| CN203120255U (en) | LED control system circuit for primary-side sampling | |
| CN204578382U (en) | A kind of single-chip switching stabilized voltage power supply | |
| CN204652245U (en) | A kind of power circuit | |
| CN202906769U (en) | A computer switching power supply | |
| CN204206529U (en) | A kind of high efficiency extra small power non-isolated LED drive circuit | |
| CN104735867A (en) | Novel LED illuminating lamp driver adopting constant-current-source driving | |
| CN202918545U (en) | Average linear LED (Light Emitting Diode) drive circuit | |
| CN204164782U (en) | Efficient LED light bar | |
| CN204994026U (en) | High -power LED lamp driving circuit | |
| CN202798497U (en) | DC stabilized voltage supply of precise adjustable switch | |
| CN203326895U (en) | Pulse electroplate power source based on one-chip microcomputer | |
| CN205017632U8 (en) | A kind of driving power supply of the ballast formula LED for having Variable power energy-conservation concurrently | |
| CN204482097U (en) | A kind of high-power LED drive circuit | |
| CN204119611U (en) | A kind of LED linear drive circuit system | |
| CN104735871A (en) | Non-isolated type LED driver | |
| CN203872399U (en) | Wide voltage AC-DC dual-purpose light emitting diode indicating lamp circuit | |
| CN206077786U (en) | It is a kind of based on PWM dim without stroboscopic LED drive circuit | |
| CN204089607U (en) | A kind of Switching Power Supply of novel adjustable output voltage | |
| CN202514132U (en) | LED dimming power supply | |
| CN203251257U (en) | High-power direct-current brushless motor control circuit for flat car | |
| CN203082834U (en) | Dental equipment light-emitting diode (LED) driving circuit |
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: 20151007 Termination date: 20160704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |