CN106686824A - Alternating current LED lamp with uniform brightness and implementation method thereof - Google Patents
Alternating current LED lamp with uniform brightness and implementation method thereof Download PDFInfo
- Publication number
- CN106686824A CN106686824A CN201710043441.3A CN201710043441A CN106686824A CN 106686824 A CN106686824 A CN 106686824A CN 201710043441 A CN201710043441 A CN 201710043441A CN 106686824 A CN106686824 A CN 106686824A
- Authority
- CN
- China
- Prior art keywords
- led lamp
- switch
- led
- series
- lamp unit
- 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.)
- Granted
Links
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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an alternating current LED lamp with uniform brightness and an implementation method thereof. The alternating current LED lamp comprises a rectifying circuit, S-series switches consisting of switches S1 to Sn-1, K-series switches consisting of switches K1 to Kn, K'-series switches consisting of switches K'1 to K'n, and n same LED lamp units. The switch Kn, the n-th LED lamp unit and the switch K'n are serially connected to a series branch of the LED lamp and then are connected in parallel. The (n-1)-th LED lamp unit and the n-th LED lamp unit are connected through the switch Sn-1. According to the implementation method, the quantity M of the serially connected LED lamp units is determined according to the average voltage amplitude of a time slot, and then M LED lamp units form a group of LED lamp units, and the connected groups of LED lamp units are connected in parallel to be switched in the rectified circuit. The alternating current driven LED lamp with uniform brightness can be obtained, and compared with a traditional LED lamp, an AD conversion power supply is not needed, so that the brightness of each LED is more uniform.
Description
Technical field
The present invention relates to a kind of using the LED for exchanging driving, more particularly to a kind of LED of brightness uniformity belongs to photograph
Bright technical field.
Background technology
At present, LED has been widely used for illumination and display field.With the development of technology, LED light effect and power enter
One step increases, and brightness is by more and more higher.But due to the self character of LED, it is usually dc source that it drives, and China at present
That what is typically encountered is 220V, 50Hz AC powers.Having the power supply mode of LED product in the market has：(1) alternating current is used
Charge a battery, then direct current supply, the shortcoming of this method is that the use of battery can be polluted, while reducing energy
Effect；(2) power supply of direct current is turned using exchange, the shortcoming of this method is that the performance of power supply is very big to illumination effects；(3) will hand over
Negative half period upset, through rectifier bridge, is positive half cycle by stream electricity, is then powered to LED lamp, and the shortcoming of this method is that have
The flicker of 100Hz frequencies, simultaneously as starting the effect of voltage, the most of the time, LED did not lighted；(4) using it is in parallel, lead
Logical LED array in opposite direction, lower half on alternating current works respectively, actual flicker frequency 50Hz of this mode.
Patent 201510498804.3《A kind of AC LED lamp》Disclose a kind of LED of employing IC intelligent switching controls
String, directly can be driven using exchange, but, in a cycle 0.01 second, the working time of LED string is also different, leans on
Nearly power supply, the working time is longer, away from power supply, only works in crest voltage so that bright per LEDs in lamp string
Degree is inconsistent, concurrently there are the flicker of 100Hz, and the peak valley rate of change of brightness is unfavorable for general lighting than larger.
The content of the invention
It is an object of the invention to provide a kind of identical per LEDs brightness, brightness peak valley rate of change is smaller directly to be made
With 220v, the AC LED lamp of 50Hz civil powers.
Technical scheme is as follows：
The present invention provides a kind of AC LED lamp of brightness uniformity, including rectification circuit, by switch S1-Sn-1The S systems of composition
Row switch, by switch K1-KnThe K series switch of composition, by switch K'1-K'nThe K' series switch of composition, n identical LED
Unit, the switch Kn, n-th LED lamp unit and switch K'nIt is composed in series n-th LED series arm, n LED series connection
Branch circuit parallel connection constitutes LED parallel circuit, by switching S between (n-1)th LED lamp unit and n-th LED lamp unitn-1Phase
Even, the input of the LED series arm is connected with the output end of the rectification circuit, the input connection fire of rectification circuit
Line, the output end connection ground wire of the LED series arm.
Further, the LED lamp unit is a LED, or the LED light group composed in parallel by several LEDs.
Further, the S series switch, K series switch and K' series switch are intelligent switch.
The present invention also provides a kind of implementation method of the AC LED lamp of brightness uniformity, according to the average voltage size of time slot,
It is determined that the LED lamp unit number M of series connection, then using M LED lamp unit as one group, between group and group after access rectification in parallel
Circuit.
Further, the method for the present invention comprises the steps：
Step 1：Determine the average voltage size of time slot；
Step 2：It is determined that the LED lamp unit number M of series connection；
Step 3：Then using M LED lamp unit as one group, the circuit accessed after rectification in parallel between group and group；
Step 4：In different time-gap, according to the opening and closing of following rule controlling switch：
If i-th arrives i+1 time slots, then i LED lamp unit can be simultaneously driven；Intelligent switch chip provides switching signal,
Switch K1, Ki+1, K2i+1 ... closure, switch S1 to Si-1, Si+1 to S2i-1, S2i+1 to S3i-1 ... closure, switch
Ki', K2i', K3i' ... are closed, and other are switched off.
Further, the intelligent switch chip measurement instantaneous voltage for being constituted using metal-oxide-semiconductor, is obtained according to the signal that chip is given
Time slot now, is controlled in different time-gap to the break-make of each circuit.
Further, comprise the steps：
Step 1：Chip obtains time slot signal according to instantaneous voltage is detected, and determines starting time slots, is sent to intelligence and opens
Close；
Step 2：The break-make of each circuit is controlled in different time-gap：
In 0-1 time slots, undertension to drive any one LED lamp unit, at this moment, S series switch, K series switch and
K' series switch is all off, is failure to actuate；
In 1-2 time slots, voltage can drive a LED lamp unit, and at this moment, K series switch and K' series switch are all closed
Conjunction, S series switch are fully open, and so, whole LED lamp units are in parallel to access circuits；
In 2-3 time slots, voltage can drive two LED lamp units, at this moment, K1, K3, K5, K7 ... closure, K2', K4',
K6', K8' ... are closed, and S1, S3, S5, S7 ... closure, S2, S4, S6, S8 ... are opened, and K2, K4, K6, K8 ... are opened, K1',
K3', K5', K7' ... are opened, and so, LED lamp unit two is connected into one group, then per group of access circuit in parallel；
In 3-4 time slots, voltage can drive three LED lamp units, at this moment, K1, K4, K7, K10 ... closure, K3', K6',
K9', K12' ... are closed, and S1, S2, S4, S5, S7, S8 ... closure, S3, S6, S9, S12 ... are opened, K2, K3, K5, K6, K8,
K9 ... is opened, and K1', K2', K4', K5', K7', K8' ... are opened.So, LED lamp unit three is connected into one group, then often
Group is in parallel to access circuit；
The rest may be inferred for other time slots.
Beneficial effects of the present invention are as follows：
The present invention can obtain the LED that the exchange of brightness uniformity drives, compared with traditional LED lamp, it is not necessary to AD conversion
Power supply, the brightness of every LED is evenly.
Description of the drawings
Fig. 1 is a kind of schematic diagram of the AC LED lamp of brightness uniformity of the invention；
Fig. 2 is the time slot selection figure of alternating voltage；
Fig. 3 is the control principle drawing of intelligent switch chip.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of structure of the AC LED lamp of brightness uniformity of the present invention is as shown in figure 1, including rectification circuit, by switch S1-
Sn-1The S series switch of composition, by switch K1-KnThe K series switch of composition, by switch K'1-K'nThe K' series switch of composition, n
Individual identical LED lamp unit, the switch Kn, n-th LED lamp unit and switch K'nIt is composed in series n-th LED series connection
Road, n LED series arm composes in parallel LED parallel circuit, between (n-1)th LED lamp unit and n-th LED lamp unit
By switching Sn-1It is connected, the input of the LED series arm is connected with the output end of the rectification circuit, rectification circuit
Input connection live wire, the LED series arm output end connection ground wire.
Used as the preferred embodiment of the present invention, above-mentioned LED lamp unit can be a LED, or by some
The LED light group that individual LED is composed in parallel.
Used as the preferred embodiment of the present invention, above-mentioned S series switch, K series switch and K' series switch are intelligence
Switch.As shown in Fig. 2 according to the average voltage size of time slot, it is determined that the LED lamp unit number M of series connection, then by M LED
Circuit of the unit as one group, between group and group after access rectification in parallel.Comprise the following steps that：
Step 1：Determine the average voltage size of time slot；
Alternating current is 100Hz after rectification, and a cycle is divided into 100 time slots, each time slot 3.14V,
0.0001s.When just connecting electricity, voltmeter quickly measure two adjacent time-slots (n-1, average voltage n), therefore, adopt
The method of measurement obtains the average voltage of initial two time slots.The time slot signal for passing to intelligent switch is n.
Step 2：It is determined that the LED lamp unit number M of series connection；
When initial, M=time slots average voltage/LED rated voltages.During starting brightness, the electricity of two neighboring time slot is measured
Pressure, provides time slot signal (being exactly in fact sequence of time slots number), according to time slot signal, determines the origination action of swtich train, afterwards
Next switch motion is just done every 0.0001s, so as to become cyclical action.
Step 3：Then using M LED lamp unit as one group, the circuit accessed after rectification in parallel between group and group；
Step 4：In different time-gap, according to the opening and closing of following rule controlling switch：
If i-th arrives i+1 time slots, then i LED lamp unit can be simultaneously driven；Intelligent switch chip provides switching signal,
Switch K1, Ki+1, K2i+1 ... closure, switch S1 to Si-1, Si+1 to S2i-1, S2i+1 to S3i-1 ... closure, switch
Ki', K2i', K3i' ... are closed, and other are switched off.
Used as the preferred embodiment of the present invention, the intelligent switch chip constituted using metal-oxide-semiconductor measures instantaneous voltage, according to
The signal that chip is given obtains time slot now, and the break-make of each circuit is controlled in different time-gap.Control principle such as Fig. 3 institutes
Show.Concrete rate-determining steps are as follows：
Step 1：Chip obtains time slot signal according to instantaneous voltage is detected, and determines starting time slots, is sent to intelligence and opens
Close；
Step 2：The break-make of each circuit is controlled in different time-gap：
In 0-1 time slots, undertension to drive any one LED lamp unit, at this moment, S series switch, K series switch and
K' series switch is all off, is failure to actuate；
In 1-2 time slots, voltage can drive a LED lamp unit, and at this moment, K series switch and K' series switch are all closed
Conjunction, S series switch are fully open, and so, whole LED lamp units are in parallel to access circuits；
In 2-3 time slots, voltage can drive two LED lamp units, at this moment, K1, K3, K5, K7 ... closure, K2', K4',
K6', K8' ... are closed, and S1, S3, S5, S7 ... closure, S2, S4, S6, S8 ... are opened, and K2, K4, K6, K8 ... are opened, K1',
K3', K5', K7' ... are opened, and so, LED lamp unit two is connected into one group, then per group of access circuit in parallel；
In 3-4 time slots, voltage can drive three LED lamp units, at this moment, K1, K4, K7, K10 ... closure, K3', K6',
K9', K12' ... are closed, and S1, S2, S4, S5, S7, S8 ... closure, S3, S6, S9, S12 ... are opened, K2, K3, K5, K6, K8,
K9 ... is opened, and K1', K2', K4', K5', K7', K8' ... are opened.So, LED lamp unit three is connected into one group, then often
Group is in parallel to access circuit；
The rest may be inferred for other time slots.
If the time slot signal that chip is given is n-th time slot, intelligent switch works from the beginning of the mode of operation of n+1 time slot
To after the 100th pattern, then from the beginning of the 1st pattern, to 100 patterns, such cyclically-varying.
Illustrate with reference to specific embodiment.
In the present embodiment, light guide plate is some comprising LED (or LED parallel lamp groups), quantity (such as 100 groups of White LED)
For the rated voltage of 314/LED, the effective voltage of civil power is 220V, maximum voltage 220sqrt (2)=314V, LEDn (n=1,
2,3 ...), three groups of intelligent switch, are respectively switch Sn-1(n=1,2,3 ...), Kn(n=1,2,3 ...), Kn /(n=1,2,3 ...).
After bridge-type is arranged, it is 100Hz to obtain frequency, and peak value is the direct current of 220sqrt (2), takes a cycle 10
In millisecond, (during white light LEDs low-pressure opening voltage, do not light, cut-in voltage is exactly luminous minimum of LED from the cut-in voltage of LED
Voltage) start, interval 3.14 volts be divided into 100 equal portions (rated voltage when 3.14V is a LED normal work, it is whole through bridge-type
After reason, crest voltage is 314V), it is respectively labeled as 1-100.
0-1 time slots, voltage is very low, and a LED can not drive, therefore S series switch, K series switch and K/Series
Switch off, be failure to actuate；
In 1-2 time slots, voltage can drive 1 LED, at this moment, K series switch and K/All closure, S are serial for series switch
Switch is fully open.So whole LED is in parallel to access circuit.
In 2-3 time slots, voltage can drive 2 LED, at this moment, K1, K3, K5, K7 ... closure, K2', K4', K6',
K8' ... is closed, and S1, S3, S5, S7 ... closure, S2, S4, S6, S8 ... are opened, and K2, K4, K6, K8 ... are opened, K1', K3',
K5', K7' ... open.So, LED two is connected into one group, then per group of access circuit in parallel.
In 3-4 time slots, voltage can drive 3 LED, at this moment, K1, K4, K7, K10 ... closure, K3', K6', K9',
K12' ... is closed, and S1, S2, S4, S5, S7, S8 ... closure, S3, S6, S9, S12 ... are opened, K2, K3, K5, K6, K8, K9 ...
Open, K1', K2', K4', K5', K7', K8' ... are opened.So, LED tri- is connected into one group, then per group of access electricity in parallel
Road.
The rest may be inferred for other time slots.That is, according to the average voltage size of the time slot, it is determined that the LED number M of series connection, then M
Individual LED is one group, the circuit accessed after rectification in parallel between group and group.
In whole time slots, and all LED (can not constitute individually except one group, for example, LED100*100, at the 3rd
During gap, per triplets, so, just have that a LED is unnecessary, this LED cannot light in the 3rd time slot.Correspondence 100*
100 LEDs, 100*90 is all to work under 3.14V rated voltages always, and only 10% can work sometimes, and work is unable to sometimes
Make.Present invention is mainly used for the light fixture of low-power LED composition, therefore the large number of LED particle, the LED of normal work is main
Want) all luminous, therefore, all LED luminances are identical.The change of LED overall brightnesses is less.
In the present embodiment, 1w White LEDs are adopted for light source.97 altogether (220sqrt (2)/3.2 is rounded).
The instantaneous voltage of the chip measurement civil power of 100 metal-oxide-semiconductor compositions is selected, this is obtained according to the signal that the chip is given
When which time slot belonged to.
Using intelligent switch chip, the break-make of each circuit can be controlled in different time-gap.
When intelligent switch chip selects MOS chips：
MOS chips obtain time slot signal according to instantaneous voltage is detected, and are sent to intelligent chip switch.
If i-th arrives i+1 time slots, then i LED can be simultaneously driven.MOS chips provide switching signal, K0, Ki,
K2i ... switch closures, S1 to Si-1, Si+1 to S2i-1, S2i+1 to S3i-1 ... closure, Ki-1, K2i-1 ... switch is closed
Close.Other are switched off.
After determining starting time slots, according to each switch closure of rule and opening, AC LED lamp just can work.
When intelligent switch chip selects voltage acquisition chip：
First, the voltage of voltage acquisition chip collection two neighboring time slot when switching on power, determines time slot signal (i.e. time slot
Sequence number), intelligent switch array is then passed to, afterwards voltage acquisition chip does not work, the voltage acquisition core until turning on light next time
Piece restarts to gather time slot voltage signal.It is same as the previously described embodiments that each switches on-off rule.
Because the corresponding switch motion of each time slot is constant, voltage acquisition chip is received after time slot signal, is just pressed
According to the corresponding switch motion work of the time slot, even if after next time slot 0.0001s, according to the switch motion work of next time slot
Make, thus go round and begin again.
In sum, the present invention is that a kind of low frequency dodges LED alternating-current lamp.Using intelligent switch, in the case where electric main drives, have
Regularly drive the LED of various combination.Feature is that total injecting power fluctuation is smaller, and the stroboscopic of whole LED lamp compares
It is low.The invention directly drives LED using alternating current, and power supply need not be designed in light fixture, improves the efficiency of LED, reduces
The weight of lamp.
The embodiment be the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment, not
In the case of the flesh and blood of the present invention, any conspicuously improved, replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (7)
1. a kind of AC LED lamp of brightness uniformity, it is characterised in that：Including rectification circuit, by switch S1-Sn-1The S of composition is serial
Switch, by switch K1-KnThe K series switch of composition, by switch K'1-K'nThe K' series switch of composition, n identical LED list
Unit, the switch Kn, n-th LED lamp unit and switch K'nIt is composed in series n-th LED series arm, n LED series connection
Road composes in parallel LED parallel circuit, by switching S between (n-1)th LED lamp unit and n-th LED lamp unitn-1It is connected,
The input of the LED series arm is connected with the output end of the rectification circuit, the input connection live wire of rectification circuit,
The output end connection ground wire of the LED series arm.
2. the AC LED lamp of a kind of brightness uniformity according to claim 1, it is characterised in that：The LED lamp unit is one
Individual LED, or the LED light group composed in parallel by several LEDs.
3. the AC LED lamp of a kind of brightness uniformity according to claim 1, it is characterised in that：The S series switch, K systems
Row switch and K' series switch are intelligent switch.
4. a kind of implementation method of the AC LED lamp of brightness uniformity, it is characterised in that：According to the average voltage size of time slot, really
The LED lamp unit number M of fixed series connection, then using M LED lamp unit as one group, between group and group after access rectification in parallel
Circuit.
5. the implementation method of the AC LED lamp of a kind of brightness uniformity according to claim 4, it is characterised in that：Including such as
Lower step：
Step 1：Determine the average voltage size of time slot；
Step 2：It is determined that the LED lamp unit number M of series connection；
Step 3：Then using M LED lamp unit as one group, the circuit accessed after rectification in parallel between group and group；
Step 4：In different time-gap, according to the opening and closing of following rule controlling switch：
If i-th arrives i+1 time slots, then i LED lamp unit can be simultaneously driven；Intelligent switch chip provides switching signal, switch
K1, Ki+1, K2i+1 ... are closed, switch S1 to Si-1, Si+1 to S2i-1, S2i+1 to S3i-1 ... closure, switch Ki',
K2i', K3i' ... are closed, and other are switched off.
6. the implementation method of the AC LED lamp of a kind of brightness uniformity according to claim 5, it is characterised in that：Using MOS
The intelligent switch chip measurement instantaneous voltage of pipe composition, according to the time slot that the signal that chip is given obtains now, in different time-gap
The break-make of each circuit is controlled.
7. the implementation method of the AC LED lamp of a kind of brightness uniformity according to claim 6, it is characterised in that：Including such as
Lower step：
Step 1：Chip obtains time slot order signal according to the instantaneous voltage for detecting two time slots, determines starting time slots, sends
To intelligent switch；
Step 2：The break-make of each circuit is controlled in different time-gap：
In 0-1 time slots, undertension to drive any one LED lamp unit, at this moment, S series switch, K series switch and K' systems
Row switch is all off, is failure to actuate；
In 1-2 time slots, voltage can drive a LED lamp unit, at this moment, K series switch and K' series switch all closure, S
Series switch is fully open, and so, whole LED lamp units are in parallel to access circuit；
In 2-3 time slots, voltage can drive two LED lamp units, at this moment, K1, K3, K5, K7 ... closure, K2', K4', K6',
K8' ... is closed, and S1, S3, S5, S7 ... closure, S2, S4, S6, S8 ... are opened, and K2, K4, K6, K8 ... are opened, K1', K3',
K5', K7' ... are opened, and so, LED lamp unit two is connected into one group, then per group of access circuit in parallel；
In 3-4 time slots, voltage can drive three LED lamp units, at this moment, K1, K4, K7, K10 ... closure, K3', K6', K9',
K12' ... is closed, and S1, S2, S4, S5, S7, S8 ... closure, S3, S6, S9, S12 ... are opened, K2, K3, K5, K6, K8, K9 ...
Open, K1', K2', K4', K5', K7', K8' ... are opened.So, LED lamp unit three is connected into one group, then per group of parallel connection
Access circuit；
The rest may be inferred for other time slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043441.3A CN106686824B (en) | 2017-01-19 | 2017-01-19 | A kind of AC LED lamp and its implementation of brightness uniformity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043441.3A CN106686824B (en) | 2017-01-19 | 2017-01-19 | A kind of AC LED lamp and its implementation of brightness uniformity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106686824A true CN106686824A (en) | 2017-05-17 |
| CN106686824B CN106686824B (en) | 2019-06-25 |
Family
ID=58859880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710043441.3A Active CN106686824B (en) | 2017-01-19 | 2017-01-19 | A kind of AC LED lamp and its implementation of brightness uniformity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106686824B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588751A (en) * | 2011-01-05 | 2012-07-18 | 晶元光电股份有限公司 | Light-emitting device |
| CN104066248A (en) * | 2014-06-26 | 2014-09-24 | 深圳普益照明科技有限公司 | Alternating-current multi-section partition drive type LED optical engine and drive method thereof |
| CN104427688A (en) * | 2013-08-23 | 2015-03-18 | 四川新力光源股份有限公司 | LED alternating current driving circuit |
| CN104703349A (en) * | 2015-03-06 | 2015-06-10 | 上海顿格电子贸易有限公司 | Constant current control LED (Light Emitting Diode) system |
| CN105142270A (en) * | 2015-08-14 | 2015-12-09 | 四川华泰电气有限公司 | Alternating-current light-emitting diode (LED) lamp |
-
2017
- 2017-01-19 CN CN201710043441.3A patent/CN106686824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588751A (en) * | 2011-01-05 | 2012-07-18 | 晶元光电股份有限公司 | Light-emitting device |
| CN104427688A (en) * | 2013-08-23 | 2015-03-18 | 四川新力光源股份有限公司 | LED alternating current driving circuit |
| CN104066248A (en) * | 2014-06-26 | 2014-09-24 | 深圳普益照明科技有限公司 | Alternating-current multi-section partition drive type LED optical engine and drive method thereof |
| CN104703349A (en) * | 2015-03-06 | 2015-06-10 | 上海顿格电子贸易有限公司 | Constant current control LED (Light Emitting Diode) system |
| CN105142270A (en) * | 2015-08-14 | 2015-12-09 | 四川华泰电气有限公司 | Alternating-current light-emitting diode (LED) lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106686824B (en) | 2019-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104427688B (en) | LED alternating-current drive circuit | |
| CN102714898B (en) | LED illumination circuit | |
| CN108990201B (en) | Wall-control LED lamp low-harmonic dimming method | |
| CN103957649A (en) | LED driving method and LED lighting circuit | |
| CN103582263B (en) | A kind of linear multi-channel LED constant-current drive circuit | |
| CN102625522A (en) | High Brightness Led Driving Circuit | |
| CN104396348A (en) | Led dimmer, led lighting device comprising same, and method for controlling dimming of led lighting device | |
| CN103813570A (en) | LED brightness balancing control circuit and method, and constant-voltage drive LED lighting system and method | |
| CN103200728A (en) | White-light light emitting diode (LED) luminous device directly driven in constant current by alternating current | |
| CN104918387B (en) | A kind of LED light device of exchange driving | |
| CN104125686A (en) | Safe-isolated and full-color LED lamp circuit and dimming method | |
| CN109951920A (en) | LED light device | |
| CN203352858U (en) | LED all-turning-on control circuit and constant voltage driven LED illumination system | |
| CN104797062B (en) | Non-strobe high-efficiency LED (light-emitting diode) driving manner compatible with phase-controlled light modulator | |
| CN112637995B (en) | LED lamp control method, controller, LED lamp and control system thereof | |
| CN106304459A (en) | Light emitting diode illuminating apparatus | |
| CN107249242A (en) | A kind of single phase poaer supply line sends the device of LED brightness control signal | |
| CN106686824A (en) | Alternating current LED lamp with uniform brightness and implementation method thereof | |
| CN107172763B (en) | Switch toning control circuit, chip, method and switch toning LED drive system | |
| CN206963154U (en) | By the control circuit for detecting power switch action regulation light-source brightness | |
| CN204993986U (en) | Novel exchange LED lamp | |
| CN102984851B (en) | Light-emitting diode (LED) pulsation driving frequency improving circuit | |
| CN109561537A (en) | A kind of no stroboscopic High Power Factor ACLED driving circuit | |
| CN203984734U (en) | A kind of safety isolation full-color LED lamp circuit | |
| CN104853484B (en) | A kind of indoor LED illumination light adjusting and controlling device and method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220928 Address after: 213000 north of Caoqiao bus station and west of Changcao highway, Xueyan Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: JIANGSU PUSENDI LIGHTING CO.,LTD. Address before: 213032 No. 666 Liaohe Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU INSTITUTE OF TECHNOLOGY |