CN202750305U - LED spotlight with dimming function - Google Patents
LED spotlight with dimming function Download PDFInfo
- Publication number
- CN202750305U CN202750305U CN 201220477844 CN201220477844U CN202750305U CN 202750305 U CN202750305 U CN 202750305U CN 201220477844 CN201220477844 CN 201220477844 CN 201220477844 U CN201220477844 U CN 201220477844U CN 202750305 U CN202750305 U CN 202750305U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- light
- dimming function
- capacitor
- 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
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to an LED spotlight with a dimming function. A driving power supply module is arranged in the LED spotlight and consists of a filter anti-flicker circuit, a rectification circuit, a dimming signal detection circuit and a power factor correcting circuit and the like, wherein the above-mentioned circuits are successively connected. Besides, a mater control circuit is also included. The filter anti-flicker circuit consists of a first resistor, a second resistor, a first inductor, a second inductor and a first capacitor; the first resistor is connected in parallel with the first inductor, wherein one end of the parallel connection of the first resistor and the first inductor is connected with a live wire output terminal of a silicon controlled dimming module and the other end of the parallel connection thereof is connected with one input terminal of a rectifier bridge; the second resistor is connected with the second inductor, wherein one end of the parallel connection of the second resistor and the second inductor is connected with a zero line output terminal of the silicon controlled dimming module and the other end of the parallel connection thereof is connected with the other input terminal of the rectifier bridge; and the first capacitor is connected between the two input terminals of the rectifier bridge. According to the utility model, a problem of compatibility of an LED spotlight and a dimming circuit of the traditional halogen lamp can be solved; and the dimming linearity is good and no flickering phenomenon exists. Therefore, the LED spotlight can replace the traditional halogen lamp well.
Description
Technical field
The utility model relates to a kind of LED shot-light with dimming function.
Background technology
Because traditional halogen spot light is inductive load, have good dimming effect, therefore in lighting field, obtain good application.But along with the progress of science and technology, have the life-span long, energy-conservation, replace traditional lighting without LED light on of the characteristics such as ultraviolet radiation.Because LED is that semiconductor device needs again constant current to drive and it is capacitive load, so LED shot-light on the market all can not be realized light modulation as traditional halogen spot light, LED shot-light power less (being generally less than 20W) on the other hand, and traditional halogen spot light controllable silicon dimmer bearing power is 300～600W, so stroboscopic can appear when the LED shot-light chains traditional halogen spot light dimmer, let alone dimming effect.
The utility model content
For addressing the above problem, the utility model provides a kind of LED shot-light that can compatible traditional dimmers has dimming function.
The technical solution of the utility model is as follows: a kind of LED shot-light with dimming function, in establish the driving power module of using for being connected with the thyristor regulating optical module, described driving power module comprises filtering anti-flicker circuit, rectification circuit, dim signal testing circuit, circuit of power factor correction, safe isolation and reduction voltage circuit, the output rectifier and filter that connects successively, and described output rectifier and filter is connected with led light source; Also comprise the governor circuit for constant current output control, described governor circuit is connected with safety isolation and reduction voltage circuit.
Described filtering anti-flicker circuit comprises the first resistance, the second resistance, the first inductance, the second inductance and the first electric capacity; The first resistance and the first inductance in parallel, one parallel connected end connect thyristor regulating optical module live wire output, and another parallel connected end connects rectifier bridge one input; The second resistance and the second inductance in parallel, one parallel connected end connect thyristor regulating optical module zero line output, and the other end connects another input of rectifier bridge; The first electric capacity is connected between rectifier bridge two inputs.
Described dim signal testing circuit comprises the 3rd resistance, the 4th resistance, the 19 resistance, the 3rd electric capacity that is series at successively between rectifier bridge two outputs; The tie point access governor circuit of the 3rd electric capacity and the 19 resistance.
Described governor circuit comprises control chip and resistance, electric capacity, metal-oxide-semiconductor; Deliver to control chip at the triangular wave that described resistance produces, produce the service time length of a square-wave signal control metal-oxide-semiconductor through the internal comparator of control chip, the average current of safety isolating transformer is flow through in restriction, realizes constant current and dimming function by controlling this electric current.
Compared with prior art, the beneficial effects of the utility model are as follows: solved the problem of the compatible traditional Halogen lamp LED light modulation circuit of LED shot-light, and the light modulation good linearity, do not glimmer, thereby make the LED shot-light can better replace traditional halogen spot light.
Description of drawings
Fig. 1 is that the utility model principle forms schematic block diagram;
Fig. 2 is the utility model embodiment circuit theory diagrams.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
LED shot-light described in the utility model, its built-in one driving power module that can accept traditional controllable silicon light modulation mode enables directly to replace traditional halogen spot light and uses, and need not change circuit.As shown in Figure 1, described driving power module comprises filtering anti-flicker circuit, rectification circuit, dim signal testing circuit, circuit of power factor correction, safe isolation and reduction voltage circuit, output rectifier and filter, foregoing circuit connects successively, and output rectifier and filter is connected with led light source; Also comprise governor circuit.During work, the filtering anti-flicker circuit carries out the filtering processing with the power supply with the assorted letter of high frequency of thyristor regulating optical module output, make it satisfy the requirement of national electromagnetic compatibility fully, then export to rectification circuit, get dim signal after the rectification and deliver to governor circuit, this signal is delivered to safe insulate step-down transformer simultaneously after circuit of power factor correction carries out capability correction, the electric current that governor circuit flows through isolating transformer by control reaches constant current, and the isolating transformer output voltage signal provides stable constant current drive source to LED behind rectifying and wave-filtering.
Fig. 2 is the utility model embodiment circuit theory schematic diagram.Rectification circuit adopts rectifier bridge among this embodiment, and its input connects the filtering anti-flicker circuit, and output connects the dim signal testing circuit.The filtering anti-flicker circuit directly is connected with thyristor regulating optical module output, comprises resistance R 1, R2, inductance L 1, L2, capacitor C X1; Resistance R 1 is connected with inductance L 1 parallel connection and with thyristor regulating optical module live wire output, resistance R 2 is connected with inductance L 2 parallel connections and with thyristor regulating optical module zero line output, resistance R 1 is connected with resistance R with inductance L 1 and is connected respectively rectifier bridge two inputs with another parallel connected end of inductance L 2, and capacitor C X1 is connected between rectifier bridge two inputs.During implementation, the span 2K of resistance R 1 ~ 10K ohm, inductance L 1 and L2 span are 2MH ~ 6MH, capacitor C X1 span is 1nf～3.3nf, to reach best filter effect, prevents from disturbing causing the LED lamp to glimmer.The dim signal testing circuit comprises resistance R 3, R4, R19, the capacitor C 3 that is series at successively between rectifier bridge two outputs; 3 pin of the tie point access main control chip U1 of capacitor C 3 and resistance R 19.Wherein, the span 68K of resistance R 19 ~ 300K ohm.
The 3 pin sampling rectifier bridge output voltage of chip U1 provides the control reference for U1.Described governor circuit comprises chip U1, resistance R 13, capacitor C 5, metal-oxide-semiconductor Q1; The triangular wave that produces on the resistance R 13 is delivered to the 6th pin of chip U1, produce the service time length of a square-wave signal control metal-oxide-semiconductor Q1 through the internal comparator of chip U1, the average current of safety isolating transformer is flow through in restriction, realizes constant current and dimming function by controlling this electric current.
Circuit of power factor correction comprises metal-oxide-semiconductor Q2, the resistance R 5 that is connected respectively with Q2 drain electrode, source electrode, grid, R6, R7, with the capacitor C 7 of resistance R 5 parallel connections, the inductance L 3 of connecting with R5, inductance L 3 another termination rectifier bridge positive output ends, resistance R 6, another termination rectifier bridge negative output terminal of R7 also comprise diode D1, D2.Safety isolation and reduction voltage circuit comprise transformer T1 etc., and its former limit winding connects circuit of power factor correction, and the first induction winding connects output rectifier and filter, provide working power through a series of chip U1 that are treated to behind the second induction winding induced voltage.
The above embodiment has only expressed execution mode of the present utility model; it describes comparatively concrete and detailed; but can not therefore be interpreted as the restriction to the utility model claim; as long as employing is equal to the technical scheme that the form of replacement or equivalent transformation obtains, all should drop within the protection range of the present utility model.
Claims (8)
1. LED shot-light with dimming function, it is characterized in that: in establish the driving power module of using for being connected with the thyristor regulating optical module, described driving power module comprises filtering anti-flicker circuit, rectification circuit, dim signal testing circuit, circuit of power factor correction, safe isolation and reduction voltage circuit, the output rectifier and filter that connects successively, and described output rectifier and filter is connected with led light source; Also comprise the governor circuit for constant current output control, described governor circuit is connected with safety isolation and reduction voltage circuit.
2. the LED shot-light with dimming function according to claim 1, it is characterized in that: described filtering anti-flicker circuit comprises resistance R 1, R2, inductance L 1, L2, capacitor C X1; Resistance R 1 is in parallel with inductance L 1, and the one parallel connected end connects thyristor regulating optical module live wire output, and another parallel connected end connects rectifier bridge one input; Resistance R 2 is in parallel with inductance L 2, and the one parallel connected end connects thyristor regulating optical module zero line output, and the other end connects another input of rectifier bridge; Capacitor C X1 is connected between rectifier bridge two inputs.
3. the LED shot-light with dimming function according to claim 2 is characterized in that: the span 2K of described resistance R 1 ~ 10K ohm.
4. the LED shot-light with dimming function according to claim 2, it is characterized in that: described inductance L 1 and L2 span are 2MH ~ 6MH.
5. the LED shot-light with dimming function according to claim 2, it is characterized in that: described capacitor C X1 span is 1nf～3.3nf.
6. the LED shot-light with dimming function according to claim 1, it is characterized in that: described dim signal testing circuit comprises resistance R 3, R4, R19, the capacitor C 3 that is series at successively between rectifier bridge two outputs; Capacitor C 3 accesses governor circuit with the tie point of resistance R 19.
7. the LED shot-light with dimming function according to claim 6 is characterized in that: the span 68K of described resistance R 19 ~ 300K ohm.
8. the LED shot-light with dimming function according to claim 1, it is characterized in that: described governor circuit comprises chip U1, resistance R 13, capacitor C 5, metal-oxide-semiconductor Q1; The triangular wave that produces on the resistance R 13 is delivered to the 6th pin of IC, produce the service time length of a square-wave signal control metal-oxide-semiconductor Q1 through chip U1 internal comparator, the average current of safety isolating transformer is flow through in restriction, realizes constant current and dimming function by controlling this electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220477844 CN202750305U (en) | 2012-09-19 | 2012-09-19 | LED spotlight with dimming function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220477844 CN202750305U (en) | 2012-09-19 | 2012-09-19 | LED spotlight with dimming function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202750305U true CN202750305U (en) | 2013-02-20 |
Family
ID=47709649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220477844 Expired - Fee Related CN202750305U (en) | 2012-09-19 | 2012-09-19 | LED spotlight with dimming function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202750305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742820A (en) * | 2013-12-30 | 2014-04-23 | 苏州东山精密制造股份有限公司 | Light-emitting diode (LED) tube lamp |
| CN107906418A (en) * | 2017-11-16 | 2018-04-13 | 宁波亿佳电子照明有限公司 | A kind of cabinet LED light with dimming function |
-
2012
- 2012-09-19 CN CN 201220477844 patent/CN202750305U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742820A (en) * | 2013-12-30 | 2014-04-23 | 苏州东山精密制造股份有限公司 | Light-emitting diode (LED) tube lamp |
| CN107906418A (en) * | 2017-11-16 | 2018-04-13 | 宁波亿佳电子照明有限公司 | A kind of cabinet LED light with dimming function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203675387U (en) | LED drive circuit for providing TRIAC holding current by using controllable current source | |
| CN105792441B (en) | A kind of linear constant current circuit for controllable silicon light modulation | |
| CN103582231A (en) | Light emitting diode driving device | |
| CN203942687U (en) | A kind of isolated form constant-current dimming circuit | |
| CN102438377A (en) | LED (Light Emitting Diode) constant-current driving circuit with high power factor | |
| CN208128575U (en) | The LED lamp of input power automatic adjustment | |
| CN204518177U (en) | A kind of LED drive power circuit | |
| CN202750305U (en) | LED spotlight with dimming function | |
| CN104010405A (en) | LED light modulation circuit | |
| CN204335089U (en) | A kind of Campatible LED intelligence fluorescent tube | |
| CN101852374B (en) | Unflickering LED MR16 spot light with light regulating function | |
| CN104039039A (en) | Two-way output constant current LED (Light-Emitting Diode) driving circuit | |
| CN204145795U (en) | Have APFC function without working frequency ripple wave LED streetlamp power source | |
| CN103298204B (en) | With the controllable silicon light modulation LED lamp driver of open-circuit-protection | |
| CN102958248B (en) | A kind of LED illumination circuit | |
| JP7178068B2 (en) | Lighting equipment that has an anti-electric shock protection function and supports various stable current supply modes | |
| CN204335088U (en) | A kind of Campatible LED energy-saving fluorescent lamp tube | |
| CN205005320U (en) | Driving circuit of light -emitting diode (LED) fluorescent tube | |
| CN104735837A (en) | LED street lamp power supply without power frequency ripples and with APFC function | |
| CN109561539A (en) | A kind of digital timing invariable power directly driven by AC LED circuit | |
| CN104837276B (en) | The LED wireless control systems and control method of a kind of compatible phase-cut dimming | |
| JP2022128382A (en) | Lighting tube that has electric shock prevention protection and compatibility with various stable current supply modes | |
| CN209572189U (en) | A kind of LED power thyristor regulating optical link | |
| CN107509282B (en) | A kind of dimming device and its method of LED illumination lamp | |
| CN209488874U (en) | Tangential controllable silicon dimmer before one kind |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20190919 |