CN108449827A - A kind of LEDbulb lamp driver of 12W - Google Patents
A kind of LEDbulb lamp driver of 12W Download PDFInfo
- Publication number
- CN108449827A CN108449827A CN201810157055.1A CN201810157055A CN108449827A CN 108449827 A CN108449827 A CN 108449827A CN 201810157055 A CN201810157055 A CN 201810157055A CN 108449827 A CN108449827 A CN 108449827A
- Authority
- CN
- China
- Prior art keywords
- circuit
- lamp driver
- ledbulb lamp
- constant
- led
- 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.)
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Classifications
-
- 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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- 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]
- H05B45/10—Controlling the intensity of the light
- H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of LEDbulb lamp driver of 12W, feature are：The LEDbulb lamp driver of 12W, with simple circuit structure, constant operating current makes LEDbulb lamp driver have many advantages, such as that circuit is simple, of low cost, easy to maintenance and more durable than similar product.
Description
Technical field
The present invention relates to the LEDbulb lamp drivers of 12W a kind of.
Background technology
LED illumination lamp driver is eliminating traditional incandescent lamp, 12W with the advantage than 80% or more incandescent lamp power saving
The application of the LEDbulb lamp driver of power can make the brightness of 12W bulb lamps achieve the effect that incandescent lamp about 60W, very by user
Welcome.The only LEDbulb lamp driver of popular 12W in the market, circuit structure is complicated, and the electronic component used is more,
Increase to the failure rate occurred during the use of LEDbulb lamp and brings constant in repair.
Invention content
A kind of LEDbulb lamp driver of 12W of the present invention, with simple circuit structure, constant operating current makes LED
Bulb lamp has many advantages, such as that circuit is simple, of low cost, easy to maintenance and more durable than similar product.
A kind of LEDbulb lamp driver of 12W, circuit are formed by rectifier circuit, constant-current drive circuit and LED light string
Current detection circuit forms.
Description of the drawings
Fig. 1 is a kind of circuit diagram of the LEDbulb lamp driver of 12W.
Specific implementation mode
As shown in Figure 1, IC1 is single-phase rectifier circuit, integral bridge type rectistack or 4 rectifier diodes is selected to connect structure
At the input terminal of rectifier is electrically connected with city, and output end sends out Rectified alternating current, after filtered device C1 filtering, with smooth
Direct current send regulator circuit, then supplies LED drive circuit by regulator circuit with the direct current for stablizing about 310V.
As shown in Figure 1, IC2 and peripheral circuit form constant-current drive circuit, circuit uses pulsewidth modulation (abbreviation PWM tune
System) mode, the model D9910 of IC2, it is a high efficiency, reliable and stable high-brightness LED lamp constant current drive control IC,
The circuits such as built-in precision comparator, off-time control circuits, constant current driving.D9910 can by non-essential resistance and capacitance into
Row setting, working frequency can require according to user and be changed.Pwm signal, the brightness of adjustable LED lamp is added at the ends EN.
IC2 drives the field-effect tube T2, T2 of external connection to select model IRF540 herein by 5 feet, when 5 feet of IC2
When exporting high level, field-effect tube T2 conductings, inductance L stores energy；When 5 feet of IC2 export low level, field-effect tube T2 is cut
Only, storage inductance L energy is released energy by the circuits Schottky diode D4, to light 12W lamp strings.
As shown in Figure 1, the current detection circuit of R4, R5 and R3 composition LED light string, the LED string electric currents detected pass through R3
6 feet for feeding back to IC2, to control the duty ratio of PWM, using different size of duty cycle signals driving FET T1, from
And adjust the brightness of LED light string.Select the value of suitable R4, R5, you can meet the constant operation electric current of LED strings.
As shown in Figure 1, D1 be voltage-stabiliser tube, by resistance R1 will about 310V direct currents decompression after, stabilize to 12V voltages supply
Field-effect tube T1 is driving operating voltage.D3 is also voltage-stabiliser tube, and the direct current that half-wave rectifier D2 is exported is stablized in some electricity
Pressure value ensures that the PWM modulation voltage signal of IC2 is operated in 10~100% modulation range.V is varistor, is risen in circuit
To the overvoltage protections effect such as anti-lightning strike.
Claims (1)
1. the LEDbulb lamp driver of 12W a kind of, circuit is formed by rectifier circuit, constant-current drive circuit and LED light string electric current
Detection circuit forms；It is characterized in that：12W bulb lamp drivers make LED with simple circuit structure, constant operating current
Bulb lamp has many advantages, such as that circuit is simple, of low cost, easy to maintenance and more durable than similar product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157055.1A CN108449827A (en) | 2018-02-23 | 2018-02-23 | A kind of LEDbulb lamp driver of 12W |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157055.1A CN108449827A (en) | 2018-02-23 | 2018-02-23 | A kind of LEDbulb lamp driver of 12W |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108449827A true CN108449827A (en) | 2018-08-24 |
Family
ID=63192780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810157055.1A Withdrawn CN108449827A (en) | 2018-02-23 | 2018-02-23 | A kind of LEDbulb lamp driver of 12W |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108449827A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925232A (en) * | 2010-08-12 | 2010-12-22 | 无锡科尔华电子有限公司 | LED street lamp constant current control power supply |
-
2018
- 2018-02-23 CN CN201810157055.1A patent/CN108449827A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925232A (en) * | 2010-08-12 | 2010-12-22 | 无锡科尔华电子有限公司 | LED street lamp constant current control power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180824 |