CN205793482U - A kind of zero-frequency dodges light modulation filament circuit for lamp - Google Patents
A kind of zero-frequency dodges light modulation filament circuit for lamp Download PDFInfo
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- CN205793482U CN205793482U CN201620435040.3U CN201620435040U CN205793482U CN 205793482 U CN205793482 U CN 205793482U CN 201620435040 U CN201620435040 U CN 201620435040U CN 205793482 U CN205793482 U CN 205793482U
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- light modulation
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The open a kind of zero-frequency of this utility model dodges light modulation filament circuit for lamp, including over-current protecting unit, rectification filtering unit, light modulation/constant current unit, output unit with remove stroboscopic unit；Civil power exports unidirectional current after over-current protecting unit, rectification filtering unit, is then passed through light modulation/constant current unit, after provide without alternating voltage and the power supply of current ripple through output unit with after going stroboscopic cell processing for filament lamp.Zero-frequency described in the utility model dodges light modulation filament circuit for lamp, maintains in light modulation and adds stroboscopic on the basis of linear constant current, enables LED filament lamp while light modulation, occurs without stroboscopic effect, reaches zero-frequency and dodges.
Description
Technical field
This utility model relates to a kind of zero-frequency and dodges light modulation filament circuit for lamp, belongs to lamp light-regulating technical field.
Background technology
LED filament lamp is increasingly favored by people, particularly in European and American areas.LED filament lamp is on bar shaped substrate, the many ultraviolets of bonding and series connection or blue-light LED chip, form the integrated chip of high pressure, and general voltage is at about 30-80V, being coated with by substrate and LED chip phosphor gel, chip light emitting and light-emitting phosphor are combined into illumination white light.Owing to LED chip works the most under d.c. current, so needing the unidirectional current driving power supply that city's alternating current is converted into LED operation.
The driving power supply of existing LED filament lamp mainly has three kinds: (1) resistance-capacitance depressurization type；(2) Unisolated switch power-type；(3) high-voltage linear constant-current type.Wherein, resistance-capacitance depressurization type power supply composition components and parts are few, simple in construction, and volume is little, but stroboscopic is serious, is unfavorable for health；Although type switching power can solve without stroboscopic problem, but composition components and parts are many, and structure is complicated, and volume is big, for placing the limited space driving power supply in the filament lamp of 360 degree, particularly candle lamp, E12 lamp holder, it is difficult to accommodate, it is impossible to be further added by dimming function circuit；And high-voltage linear constant-current type power supply composition components and parts and structure are relatively easy, price is relatively low, can increase dimming function circuit and may be housed in filament lamp lamp holder, but there is also stroboscopic phenomenon.
In view of this, this utility model people study this, develops a kind of zero-frequency specially and dodges light modulation filament circuit for lamp, and this case thus produces.
Utility model content
The purpose of this utility model is to provide a kind of zero-frequency and dodges light modulation filament circuit for lamp, plus dimming function unit on the basis of linear constant current unit, removes stroboscopic unit by increase, enables LED filament lamp while light modulation, reaches zero-frequency and dodge.
To achieve these goals, solution of the present utility model is:
A kind of zero-frequency dodges light modulation filament circuit for lamp, including over-current protecting unit, rectification filtering unit, light modulation/constant current unit, output unit with remove stroboscopic unit；Civil power exports unidirectional current after over-current protecting unit, rectification filtering unit, is then passed through light modulation/constant current unit, after provide without alternating voltage and the power supply of current ripple through output unit with after going stroboscopic cell processing for filament lamp.
As preferably, described over-current protecting unit includes that metal electric fuse, described electric fuse are serially connected on the live wire of civil power, can occur when electric current is excessive to fuse with protection rear end components and parts.
As preferably, described rectification filtering unit includes rectifier bridge and is connected in parallel on the filter capacitor of rectification bridge output end, and described rectifier bridge is for being converted into unidirectional current by city's alternating current, and its input is connected with electric fuse, civil power zero line respectively；Described filter capacitor is for slightly doing Filtering Processing by the unidirectional current that rectifier bridge exports.
As preferably, described light modulation/constant current unit includes that light modulation maintains chip and linear constant current driving chip, light modulation/constant current unit is attempted by the positive and negative two ends of rectifier bridge, described light modulation maintains chip to be connected with detection resistance, by regulation detection resistance sizes, it is provided that different electric currents is to linear constant current driving chip.The electric current entrance output unit that the output of light modulation/constant current unit is constant.
As preferably, described output unit includes that an antireflux diode and filter capacitor, described antireflux diode cathode are connected with rectification filtering unit output cathode end, and negative pole is connected with filter capacitor.Owing to LED filament lamp two ends are applied with filter capacitor, this electric capacity can improve output voltage, make the lowest point of output voltage higher than the voltage the lowest point after rectification, be possible to prevent electric current to flow backwards from LED filament by antireflux diode and cause components and parts to burn to constant current unit, light modulation maintenance unit and rectification filtering unit.Ripple voltage in the further filtering circuit of described filter capacitor.
As preferably, described in go stroboscopic unit to include control module and metal-oxide-semiconductor, control module controls the switch of metal-oxide-semiconductor, the output unidirectional current without current ripple.It is supplied to the unidirectional current no current ripple component in filament lamp load, there is not stroboscopic effect, i.e. zero-frequency and dodge.
As preferably, described control module includes dynamically controlling driving chip, current sense resistor and voltage detection resistances, the electric current of described dynamic driving chip is connected with current sense resistor and voltage detecting circuit respectively with voltage input pin, detected by electric current and the voltage that light modulation/constant current unit is inputted, control metal-oxide-semiconductor, utilize the linear work district of metal-oxide-semiconductor, unrippled unidirectional current is provided for filament lamp, finally make the unidirectional current in filament lamp load not contain current ripple, thus dodge without reaching zero-frequency.
Zero-frequency described in the utility model dodges light modulation filament circuit for lamp and uses linearity light adjusting circuit, low cost.Employ stroboscopic unit, completely eliminate the stroboscopic problem of filament lamp, and can dim.
Below in conjunction with drawings and the specific embodiments, this utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is that the zero-frequency of the present embodiment dodges light modulation filament circuit for lamp block diagram；
Fig. 2 is that the zero-frequency of the present embodiment dodges light modulation filament circuit for lamp schematic diagram.
Detailed description of the invention
As it is shown in figure 1, a kind of zero-frequency dodges light modulation filament circuit for lamp, including over-current protecting unit 1, rectification filtering unit 2, light modulation/constant current unit 3, output unit 4, go stroboscopic unit 5, LED filament load 6.After civil power flows through over-current protecting unit 1; constant current is exported again through rectification filtering unit 2, light modulation/constant current unit 3; filter further through output unit 4 the most again, finally by going stroboscopic unit 5 to remove current ripple further, for LED filament load 6 offer power supply without current ripple.
As in figure 2 it is shown, described over-current protecting unit 1 includes that metal electric fuse F1, described electric fuse F1 are serially connected on the live wire L of civil power, can occur when electric current is excessive to fuse with protection rear end components and parts.
Described rectification filtering unit 2 comprises rectifier bridge BD, and for city's alternating current is converted into unidirectional current, its input is connected with electric fuse F1, civil power zero line N respectively；Described filter unit 3 comprises filter capacitor C1, and the unidirectional current for being exported by rectifier bridge BD removes exchange ripple.
Described light modulation/constant current unit 3 includes that light modulation maintains chip U2 and linear constant current driving chip U1, described linear constant current driving chip U1 to be connected with detection resistance R3,.Described light modulation maintains chip U2 to be connected with rectification filtering unit 2, linear constant current driving chip U1 and output unit 4.
In the present embodiment, light modulation maintains chip U2 to use model to be SOT89-3, and linear constant current driving chip U1 uses model to be SOP-8, and light modulation maintains chip U2 to have 3 pin (1-Vin, 2-GND, 3-CS), linear constant current driving chip U1 have 8 pins (1,3-GND, 2,4-CS, 5-6, Vout, 7-8:Vin), light modulation maintains the pin 1 of chip U2 to be connected with the first resistance R1, maintains chip U2 to provide for light modulation and starts voltage；Pin 3 connects ground connection after the second resistance R2 and detection resistance R3, maintains chip U2 to provide the detection electric current of LED filament load 6 for light modulation, by regulation detection resistance R3 size, it is provided that different electric currents is to constant-current driven chip；Second electric capacity C2 in parallel between pin 1 and 2, the second electric capacity C2 has antisurge effect, it is to avoid light modulation maintains chip U2 breakdown.First resistance R1 connects 7,8 pins of linear constant-current driven chip U2 and connects, and provides for it and starts voltage；2,4 pins of the second resistance R2 and detection resistance R3 and linear constant current driving chip U1 are connected, and provide the detection electric current of LED filament load for it.The output pin 5,6 of linear constant current driving chip U1 is connected with output unit 4, provides constant current for output unit 4.
Described output unit 4 includes diode D1 and filter capacitor CD, diode D1 has the effect preventing reflux, it is applied with filter capacitor CD owing to LED filament loads 6 two ends, this electric capacity can improve output voltage, could possibly be higher than the output voltage of rectification unit 2, be possible to prevent electric current to cause components and parts to burn from LED filament load 7 flow direction light modulation/constant current unit 3 and rectification filtering unit 2 by diode D1.Filter capacitor CD has the effect of filtering.
Described go stroboscopic unit 6 to include control module U3 and metal-oxide-semiconductor Q2, connect with LED filament load 6.Described control module mainly includes dynamically controlling driving chip U3, current sense resistor R7, voltage detection resistances R8 and electric capacity C5, supplying resistance R5 and power supply electric capacity C4 etc..Dynamically control driving chip U3 and have 6 pins, pin 1(VIN) connect supplying resistance R5, diode D1 and power supply electric capacity C4, provide electric power, pin 2(GND for bootrom U3) ground connection.Pin 3(VC) connect voltage detection resistances R8 and electric capacity C5, for dynamically controlling driving chip U3 input detection voltage；Pin 4(VG) it is connected with the grid of metal-oxide-semiconductor Q2, output control signal controls the switch of metal-oxide-semiconductor Q2, stitch 5(VS) be connected with the power end (source electrode) of current sense resistor R7 and metal-oxide-semiconductor Q2, for chip U3 input detection electric current；Pin 6 is loaded 6 negative poles be connected by another power end (drain electrode) and the LED filament of the 6th resistance R6 and metal-oxide-semiconductor Q2.Control module and metal-oxide-semiconductor provide the DC current without ripple for LED filament load 6 load, it is provided that to the unidirectional current in LED filament load 6 load without alternating component, there is not stroboscopic effect, i.e. zero-frequency and dodge.
Zero-frequency described in the present embodiment dodges light modulation filament circuit for lamp operation principle: civil power is through over-current protecting unit 1, enter the rectifier bridge BD rectification of rectification filtering unit 2 and the preliminary filtering of filter capacitor C1, there is provided direct current to supply electricity to light modulation and maintain chip U2 light modulation and linear constant current chip U1 constant current, output constant current is to output unit 4, the further filtering of filter capacitor CD in output unit 4, the further constant current of Dynamic control module U3 of stroboscopic unit and the electric current of metal-oxide-semiconductor Q2 is gone to remove ripple, there is provided constant, the electric current of no current ripple loads 6 to LED filament, realize light modulation without stroboscopic.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitably change that it is done by any person of an ordinary skill in the technical field or modify, all should be regarded as without departing from patent category of the present utility model.
Claims (7)
1. a zero-frequency dodges light modulation filament circuit for lamp, it is characterised in that: include over-current protecting unit, rectification filtering unit, light modulation/constant current unit, output unit and remove stroboscopic unit；Civil power exports unidirectional current after over-current protecting unit, rectification filtering unit, is then passed through light modulation/constant current unit, after provide without alternating voltage and the power supply of current ripple through output unit with after going stroboscopic cell processing for filament lamp.
2. a kind of zero-frequency as claimed in claim 1 dodges light modulation filament circuit for lamp, it is characterised in that: described over-current protecting unit includes that metal electric fuse, described electric fuse are serially connected on the live wire of civil power.
3. a kind of zero-frequency as claimed in claim 1 dodges light modulation filament circuit for lamp, it is characterised in that: described rectification filtering unit includes rectifier bridge and is connected in parallel on the filter capacitor of rectification bridge output end, and described rectifier bridge input is connected with electric fuse, civil power zero line respectively.
4. a kind of zero-frequency as claimed in claim 1 dodges light modulation filament circuit for lamp, it is characterized in that: described light modulation/constant current unit includes that light modulation maintains chip and linear constant current driving chip, light modulation/constant current unit is attempted by the positive and negative two ends of rectifier bridge, described light modulation maintains chip to be connected with detection resistance, by regulation detection resistance sizes, it is provided that different electric currents is to linear constant current driving chip.
5. a kind of zero-frequency as claimed in claim 1 dodges light modulation filament circuit for lamp, it is characterized in that: described output unit includes antireflux diode and filter capacitor, described antireflux diode cathode is connected with rectification filtering unit output cathode end, and negative pole is connected with filter capacitor.
6. a kind of zero-frequency as claimed in claim 1 dodges light modulation filament circuit for lamp, it is characterised in that going stroboscopic unit to include interconnective control module and metal-oxide-semiconductor described in:, control module controls the switch of metal-oxide-semiconductor, provides the unidirectional current without current ripple for filament lamp.
7. a kind of zero-frequency as claimed in claim 6 dodges light modulation filament circuit for lamp, it is characterized in that: described control module includes dynamically controlling driving chip, current sense resistor and voltage detection resistances, the electric current of described dynamic driving chip is connected with current sense resistor and voltage detecting circuit respectively with voltage input pin, detected by electric current and the voltage that linear constant current unit is inputted, control the work of metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435040.3U CN205793482U (en) | 2016-05-13 | 2016-05-13 | A kind of zero-frequency dodges light modulation filament circuit for lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435040.3U CN205793482U (en) | 2016-05-13 | 2016-05-13 | A kind of zero-frequency dodges light modulation filament circuit for lamp |
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| Publication Number | Publication Date |
|---|---|
| CN205793482U true CN205793482U (en) | 2016-12-07 |
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| CN201620435040.3U Expired - Fee Related CN205793482U (en) | 2016-05-13 | 2016-05-13 | A kind of zero-frequency dodges light modulation filament circuit for lamp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106332361A (en) * | 2016-09-20 | 2017-01-11 | 浙江阳光美加照明有限公司 | Frequency-flicker-free LED filament lamp |
| CN109195249A (en) * | 2018-09-04 | 2019-01-11 | 广东明丰电源电器实业有限公司 | It is a kind of based on silicon-controlled toggle switch circuit |
| CN110147333A (en) * | 2019-04-19 | 2019-08-20 | 宜鼎国际股份有限公司 | Write protection circuit |
| WO2021227593A1 (en) * | 2020-05-15 | 2021-11-18 | 佛山市威得士灯饰电器有限公司 | Linear silicon-controlled dimming driving apparatus for led lamp |
| WO2022267830A1 (en) * | 2021-06-24 | 2022-12-29 | 佛山市威得士灯饰电器有限公司 | Dimmable lamp controlled by common low-voltage dial switch |
| CN117202442A (en) * | 2023-09-27 | 2023-12-08 | 无锡市益明光电有限公司 | Light control circuit |
-
2016
- 2016-05-13 CN CN201620435040.3U patent/CN205793482U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106332361A (en) * | 2016-09-20 | 2017-01-11 | 浙江阳光美加照明有限公司 | Frequency-flicker-free LED filament lamp |
| CN106332361B (en) * | 2016-09-20 | 2017-10-03 | 浙江阳光美加照明有限公司 | One kind is without stroboscopic LED filament lamp |
| CN109195249A (en) * | 2018-09-04 | 2019-01-11 | 广东明丰电源电器实业有限公司 | It is a kind of based on silicon-controlled toggle switch circuit |
| CN110147333A (en) * | 2019-04-19 | 2019-08-20 | 宜鼎国际股份有限公司 | Write protection circuit |
| CN110147333B (en) * | 2019-04-19 | 2021-09-28 | 宜鼎国际股份有限公司 | Write protection circuit |
| WO2021227593A1 (en) * | 2020-05-15 | 2021-11-18 | 佛山市威得士灯饰电器有限公司 | Linear silicon-controlled dimming driving apparatus for led lamp |
| WO2022267830A1 (en) * | 2021-06-24 | 2022-12-29 | 佛山市威得士灯饰电器有限公司 | Dimmable lamp controlled by common low-voltage dial switch |
| CN117202442A (en) * | 2023-09-27 | 2023-12-08 | 无锡市益明光电有限公司 | Light control circuit |
| CN117202442B (en) * | 2023-09-27 | 2024-05-10 | 无锡市益明光电有限公司 | Light control circuit |
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| 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: 20161207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |