CN107426856A - A kind of courtyard landscape design illuminator and its delay driving circuit - Google Patents
A kind of courtyard landscape design illuminator and its delay driving circuit Download PDFInfo
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- CN107426856A CN107426856A CN201710342648.0A CN201710342648A CN107426856A CN 107426856 A CN107426856 A CN 107426856A CN 201710342648 A CN201710342648 A CN 201710342648A CN 107426856 A CN107426856 A CN 107426856A
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- 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]
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention is applied to electronic circuit design field, there is provided a kind of courtyard landscape design illuminator and its delay driving circuit.Increase delay driving circuit in each illumination group of courtyard landscape design illuminator, the dutycycle that the delay driving circuit passes through the pulse width signal of adjustment output, so that the electric current of LED is slowly increased, reach the purpose of time-delay soft start, so as to eliminate the starup current spike of drive circuit, thoroughly reduce the influence that the light fixture of cascade Connection is started shooting to that need to provide instantaneous high power requirement simultaneously.Now, as long as front end power supply can provide the power requirement of normal rear class light fixture, then whole system is with regard to energy normal work, also, when front end power supply carries out cold heat plug switch, the influence to whole system also significantly reduces, so as to, whole system functional reliability is significantly improved, and the quantity of rear class light fixture can be improved, user is more convenient and selects to use.
Description
Technical field
The invention belongs to electronic circuit design field, more particularly to a kind of courtyard landscape design illuminator and its delay and running electricity
Road.
Background technology
In courtyard landscape design illuminator out of doors, single light fixture is often difficult to meet user's request, need to use multiple photographs
Bright group reaches user's request by cascade Connection mode.
In the prior art, because the drive circuit of each illumination group has start overshoot phenomenon, that is, when starting shooting, there is electric current sharp
Peak produces, and so, when being started shooting at the same time by multiple illumination groups of cascade Connection, current spike being present, moment is added to electricity simultaneously
The problem of in the bus of road.Now, the power supply of prime illumination group output need to provide an instantaneous very high power to meet that rear class is shone
Bright group, if the power of front end power supply can not reach this requirement, front end power supply can trigger overpower protection, cause rear class to illuminate
Light fixture in group is ceaselessly flashed so that whole system is collapsed, and reduces the service life of front end power supply, in addition, working as front end
When power supply carries out cold heat plug switch, this phenomenon can be more obvious.
The content of the invention
It is an object of the invention to provide a kind of courtyard landscape design illuminator, it is intended to solves existing courtyard landscape design illumination system
In system, there is start and overshoot in the drive circuit of each illumination group, easily cause system crash, and reduce front end power supply service life
Problem.
The present invention is achieved in that a kind of courtyard landscape design illuminator, including at least illumination group of two-stage cascade connection,
Each illumination group includes connector female end, connection male and LED, and the illumination group also includes delay driving circuit, described
Delay driving circuit includes：Diode D1, inductance L1, voltage-stabiliser tube ZD1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, N
FET Q1, first resistor R1, second resistance R2, reduction voltage circuit and the driving chip circuit of type；
The anode of the diode D1 connects the connector male head of this grade of illumination group, the negative electrode connection institute of the diode D1
The input of reduction voltage circuit and the first end of the inductance L1 are stated, the second end of the inductance L1 connects the sun of the LED
Pole, the minus earth of the LED, the output end of the reduction voltage circuit connects the power end of the driving chip circuit, described
The drive end of driving chip circuit connects the grid of the FET Q1, and the drain electrode of the FET Q1 connects the voltage stabilizing
Pipe ZD1 anode, the first end of the first electric capacity C1, the first end of the second electric capacity C2 and the moon of the LED
Pole, the negative electrode of the voltage-stabiliser tube ZD1 connect the first end of the inductance L1, and the second end of the first electric capacity C1 connects the electricity
Feel L1 the second end, the second end ground connection of the second electric capacity C2, the first resistor R1, the second resistance R2 and described the
Three electric capacity C3 are connected in parallel with each other and one end after parallel connection connects the source electrode of the FET Q1 and the driving chip circuit
Current detecting end, it is in parallel after other end ground connection.
Wherein, the reduction voltage circuit may include：Low pressure difference linear voltage regulator U1, the 4th electric capacity C4 and the 5th electric capacity C5；
The input pin of the low pressure difference linear voltage regulator U1 connects described two as the input of the reduction voltage circuit
Pole pipe D1 negative electrode, the output pin of the low pressure difference linear voltage regulator U1 connect institute as the output end of the reduction voltage circuit
The power end of driving chip circuit, the grounding pin ground connection of the low pressure difference linear voltage regulator U1 are stated, the 4th electric capacity C4 connects
It is connected between the input pin and ground of the low pressure difference linear voltage regulator U1, the 5th electric capacity C5 is connected to the low voltage difference line
Between property voltage-stablizer U1 output pin and ground.
Wherein, the driving chip circuit may include：Model PS9920 constant current drive control chip U2,3rd resistor
R3, the 6th electric capacity C6 and the 7th electric capacity C7；
The chip power pin of the constant current drive control chip U2 as the driving chip circuit power end and company
The output end of the reduction voltage circuit is connect, the driving pin of the constant current drive control chip U2 is as the driving chip circuit
Drive end and the grid for connecting the FET Q1, the output electric current measure feedback pin of the constant current drive control chip U2
The first resistor R1, the second resistance R2 and the described 3rd are connected as the current detecting end of the driving chip circuit
One end after electric capacity C3 is parallel with one another, the chip power pin of the constant current drive control chip U2 also pass through the 3rd resistor
R3 connections constant current drive control chip U2 chip enables pin, and the chip of the constant current drive control chip U2 is enabled to be drawn
Pin is also grounded by the 6th electric capacity C6, and turn-off time of the constant current drive control chip U2 sets pin by described the
Seven electric capacity C7 are grounded.
Further, the system may also include power supply adaptor, the connector female end of chopped-off head illumination group and the power supply
The output end wired connection of adapter, the connector female end and the connector male head of prime illumination group of remaining illumination groups at different levels are wired
Connection.
Another object of the present invention is to additionally provide a kind of delay driving circuit of courtyard landscape design illuminator, it is special
Sign is that the delay driving circuit includes：Diode D1, inductance L1, voltage-stabiliser tube ZD1, the first electric capacity C1, the second electric capacity C2,
3rd electric capacity C3, the FET Q1 of N-type, first resistor R1, second resistance R2, reduction voltage circuit and driving chip circuit；
The connector male head of this grade of illumination group in the anode connection courtyard landscape design illuminator of the diode D1, described two
Pole pipe D1 negative electrode connects the input of the reduction voltage circuit and the first end of the inductance L1, the second end of the inductance L1
The anode of the LED, the minus earth of the LED are connected, the output end of the reduction voltage circuit connects the driving chip
The power end of circuit, the drive end of the driving chip circuit connect the grid of the FET Q1, the FET Q1
Drain electrode connect the anode of the voltage-stabiliser tube ZD1, the first end of the first electric capacity C1, the first end of the second electric capacity C2,
And the negative electrode of the LED, the negative electrode of the voltage-stabiliser tube ZD1 connect the first end of the inductance L1, the first electric capacity C1
The second end connect the second end of the inductance L1, the second end ground connection of the second electric capacity C2 is the first resistor R1, described
Second resistance R2 is connected in parallel with each other with the 3rd electric capacity C3 and one end after parallel connection connects the source electrode of the FET Q1
The other end ground connection behind current detecting end, parallel connection with the driving chip circuit.
Wherein, the reduction voltage circuit includes：Low pressure difference linear voltage regulator U1, the 4th electric capacity C4 and the 5th electric capacity C5；
The input pin of the low pressure difference linear voltage regulator U1 connects described two as the input of the reduction voltage circuit
Pole pipe D1 negative electrode, the output pin of the low pressure difference linear voltage regulator U1 connect institute as the output end of the reduction voltage circuit
The power end of driving chip circuit, the grounding pin ground connection of the low pressure difference linear voltage regulator U1 are stated, the 4th electric capacity C4 connects
It is connected between the input pin and ground of the low pressure difference linear voltage regulator U1, the 5th electric capacity C5 is connected to the low voltage difference line
Between property voltage-stablizer U1 output pin and ground.
Wherein, the driving chip circuit includes：Model PS9920 constant current drive control chip U2,3rd resistor
R3, the 6th electric capacity C6 and the 7th electric capacity C7；
The chip power pin of the constant current drive control chip U2 as the driving chip circuit power end and company
The output end of the reduction voltage circuit is connect, the driving pin of the constant current drive control chip U2 is as the driving chip circuit
Drive end and the grid for connecting the FET Q1, the output electric current measure feedback pin of the constant current drive control chip U2
The first resistor R1, the second resistance R2 and the described 3rd are connected as the current detecting end of the driving chip circuit
One end after electric capacity C3 is parallel with one another, the chip power pin of the constant current drive control chip U2 also pass through the 3rd resistor
R3 connections constant current drive control chip U2 chip enables pin, and the chip of the constant current drive control chip U2 is enabled to be drawn
Pin is also grounded by the 6th electric capacity C6, and turn-off time of the constant current drive control chip U2 sets pin by described the
Seven electric capacity C7 are grounded.
In courtyard landscape design illuminator provided by the invention and its delay driving circuit, increase in each illumination group of system
Add delay driving circuit, the dutycycle that the delay driving circuit passes through the pulse width signal of adjustment output so that the electric current of LED delays
Slow increase, reach the purpose of time-delay soft start, so as to eliminate the starup current spike of drive circuit, thoroughly reduce cascade Connection
The influence that light fixture is started shooting to that need to provide instantaneous high power requirement simultaneously.Now, as long as front end power supply can provide normal rear class lamp
The power requirement of tool, then whole system is with regard to energy normal work, also, power supply progress cold heat in front end is plugged when switching, to being entirely
The influence of system also significantly reduces, so as to, hence it is evident that whole system functional reliability is improved, and the quantity of rear class light fixture can be improved,
More convenient user selects to use.
Brief description of the drawings
Fig. 1 is the theory diagram of courtyard landscape design illuminator provided in an embodiment of the present invention；
Fig. 2 is the circuit module figure of delay driving circuit in the embodiment of the present invention；
Fig. 3 is the circuit diagram of delay driving circuit in the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The problem of existing for prior art, the embodiments of the invention provide a kind of courtyard landscape design illuminator, the system
Each illumination group use delay driving circuit 23, with LED corresponding to time-delay soft start.
Fig. 1 is the theory diagram of courtyard landscape design illuminator provided in an embodiment of the present invention.
Courtyard landscape design illuminator provided in an embodiment of the present invention includes power supply adaptor 1, and at least two-stage cascade connects
The illumination group 2 connect, chopped-off head illumination group 2 connect the output end of power supply adaptor 1.Wherein, each illumination group 2 includes again：With power supply
The output end of adapter 1 or the connector female end 21 with the wired connection of prime illumination group 2, it is female with the connector of this grade of illumination group 2
First 21 grafting and with the connector male head 22 of the wired connection of connector female end 21 of rear class illumination group 2；With the company of this grade of illumination group 2
Connect the delay driving circuit 23 of the connection of device male 22；And the LED being connected with the delay driving circuit 23 of this grade of illumination group 2
24。
Fig. 2 shown in the embodiment of the present invention, the modular circuit of delay driving circuit 23.
Specifically, delay driving circuit 23 may include：Diode D1, inductance L1, voltage-stabiliser tube ZD1, the first electric capacity C1, second
Electric capacity C2, the 3rd electric capacity C3, the FET Q1 of N-type, first resistor R1, second resistance R2, reduction voltage circuit 231 and driving
Chip circuit 232.Wherein, diode D1 anode connects the connector male head 22 of this grade of illumination group 2, and diode D1 negative electrode connects
Connect the input of reduction voltage circuit 231 and inductance L1 first end, the anode of inductance L1 the second end connection LED 24, LED
24 minus earth, the power end of the output end connection driving chip circuit 232 of reduction voltage circuit 231, driving chip circuit 232
Drive end connection FET Q1 grid, FET Q1 drain electrode connection voltage-stabiliser tube ZD1 anode, the of the first electric capacity C1
The negative electrode of one end, the second electric capacity C2 first end and LED 24, voltage-stabiliser tube ZD1 negative electrode connection inductance L1 first end,
First electric capacity C1 the second end connection inductance L1 the second end, the second electric capacity C2 the second end ground connection, first resistor R1, the second electricity
Resistance R2 and the 3rd electric capacity C3 is connected in parallel with each other and the source electrode and driving chip circuit of one end connection FET Q1 after parallel connection
232 current detecting end, it is in parallel after other end ground connection.
Fig. 3 shown in the embodiment of the present invention, the circuit diagram of delay driving circuit 23.
Specifically, reduction voltage circuit 231 may include：Low pressure difference linear voltage regulator U1, the 4th electric capacity C4 and the 5th electric capacity C5.
Wherein, low pressure difference linear voltage regulator U1 input pin Vin connects two poles as the input of reduction voltage circuit 231
Pipe D1 negative electrode, low pressure difference linear voltage regulator U1 output pin Vout connect driving as the output end of reduction voltage circuit 231
The power end of chip circuit 232, low pressure difference linear voltage regulator U1 grounding pin GND ground connection, the 4th electric capacity C4 are connected to low pressure
Between difference linear constant voltage regulator U1 input pin Vin and ground, the 5th electric capacity C5 is connected to low pressure difference linear voltage regulator U1 output
Between pin Vout and ground.
Specifically, driving chip circuit 232 may include：Model PS9920 constant current drive control chip U2, the 3rd electricity
Hinder R3, the 6th electric capacity C6 and the 7th electric capacity C7.
Wherein, constant current drive control chip U2 chip power pin VDD as driving chip circuit 232 power end and
The output end of reduction voltage circuit 231 is connected, constant current drive control chip U2 driving pin DRV is as driving chip circuit 232
Drive end and the grid for connecting FET Q1, constant current drive control chip U2 output electric current measure feedback pin CS is as driving
The current detecting end of dynamic chip circuit 232 and connect first resistor R1, second resistance R2 and the 3rd electric capacity C3 it is parallel with one another after
One end, constant current drive control chip U2 chip power pin VDD also pass through 3rd resistor R3 connection constant current drive control chips
The chip that U2 chip enables pin EN, constant current drive control chip U2 enables pin EN also by the 6th electric capacity C6 ground connection, permanent
Stream drive control chip U2 turn-off time sets pin TOFF to be grounded by the 7th electric capacity C7.
The embodiment of the present invention additionally provides a kind of delay driving circuit of courtyard landscape design illuminator, the delay driving circuit
As it was previously stated, do not repeat.
To sum up, in courtyard landscape design illuminator provided in an embodiment of the present invention and its delay driving circuit, in the every of system
Increase delay driving circuit in one illumination group, the dutycycle that the delay driving circuit passes through the pulse width signal of adjustment output so that
The electric current of LED is slowly increased, and reaches the purpose of time-delay soft start, so as to eliminate the starup current spike of drive circuit, thoroughly
Reduce the influence that the light fixture of cascade Connection is started shooting to that need to provide instantaneous high power requirement simultaneously.Now, as long as front end power supply can carry
For the power requirement of normal rear class light fixture, then whole system is with regard to energy normal work, also, front end power supply carries out cold heat plug
During switch, the influence to whole system also significantly reduces, so as to, hence it is evident that whole system functional reliability is improved, and can be improved
The quantity of rear class light fixture, it is more convenient user and selects to use.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of courtyard landscape design illuminator, including at least the illumination group of two-stage cascade connection, each illumination group include connector
Female, connection male and LED, it is characterised in that the illumination group also includes delay driving circuit, the delay and running
Circuit includes：Diode D1, inductance L1, voltage-stabiliser tube ZD1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the field effect of N-type
Should pipe Q1, first resistor R1, second resistance R2, reduction voltage circuit and driving chip circuit；
The anode of the diode D1 connects the connector male head of this grade of illumination group, and the negative electrode of the diode D1 connects the drop
The first end of the input of volt circuit and the inductance L1, the second end of the inductance L1 connect the anode of the LED, institute
The minus earth of LED is stated, the output end of the reduction voltage circuit connects the power end of the driving chip circuit, the driving core
The drive end of piece circuit connects the grid of the FET Q1, and the drain electrode of the FET Q1 connects the voltage-stabiliser tube ZD1
Anode, first end, the first end of the second electric capacity C2 and the negative electrode of the LED of the first electric capacity C1, it is described
Voltage-stabiliser tube ZD1 negative electrode connects the first end of the inductance L1, and the second end of the first electric capacity C1 connects the inductance L1's
Second end, the second end ground connection of the second electric capacity C2, the first resistor R1, the second resistance R2 and the 3rd electric capacity
C3 is connected in parallel with each other and one end after parallel connection connects the source electrode of the FET Q1 and the electric current of the driving chip circuit
Other end ground connection after test side, parallel connection.
2. courtyard landscape design illuminator as claimed in claim 1, it is characterised in that the reduction voltage circuit includes：Low voltage difference line
Property voltage-stablizer U1, the 4th electric capacity C4 and the 5th electric capacity C5；
The input pin of the low pressure difference linear voltage regulator U1 connects the diode as the input of the reduction voltage circuit
D1 negative electrode, the output pin of the low pressure difference linear voltage regulator U1 connect the drive as the output end of the reduction voltage circuit
The power end of dynamic chip circuit, the grounding pin ground connection of the low pressure difference linear voltage regulator U1, the 4th electric capacity C4 are connected to
Between the input pin and ground of the low pressure difference linear voltage regulator U1, it is steady that the 5th electric capacity C5 is connected to the low pressure difference linearity
Between depressor U1 output pin and ground.
3. courtyard landscape design illuminator as claimed in claim 1 or 2, it is characterised in that the driving chip circuit includes：Type
Number be PS9920 constant current drive control chip U2,3rd resistor R3, the 6th electric capacity C6 and the 7th electric capacity C7；
The chip power pin of the constant current drive control chip U2 connects institute as the power end of the driving chip circuit
State the output end of reduction voltage circuit, the driving of the driving pin of the constant current drive control chip U2 as the driving chip circuit
Hold and connect the grid of the FET Q1, the output electric current measure feedback pin conduct of the constant current drive control chip U2
The current detecting end of the driving chip circuit and connect the first resistor R1, the second resistance R2 and the 3rd electric capacity
One end after C3 is parallel with one another, the chip power pin of the constant current drive control chip U2 are also connected by the 3rd resistor R3
The chip for meeting the constant current drive control chip U2 enables pin, and the chip of the constant current drive control chip U2 enables pin also
It is grounded by the 6th electric capacity C6, the turn-off time of the constant current drive control chip U2 sets pin to pass through the described 7th electricity
Hold C7 ground connection.
4. courtyard landscape design illuminator as claimed in claim 1 or 2, it is characterised in that the system also includes power adaptation
Device, the output end wired connection of the connector female end of chopped-off head illumination group and the power supply adaptor, the company of remaining illumination groups at different levels
Connect the connector male head wired connection of device female and prime illumination group.
5. a kind of delay driving circuit of courtyard landscape design illuminator, it is characterised in that the delay driving circuit includes：Two poles
Pipe D1, inductance L1, voltage-stabiliser tube ZD1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the FET Q1 of N-type, the first electricity
Hinder R1, second resistance R2, reduction voltage circuit and driving chip circuit；
The connector male head of this grade of illumination group, the diode in the anode connection courtyard landscape design illuminator of the diode D1
D1 negative electrode connects the input of the reduction voltage circuit and the first end of the inductance L1, the second end connection of the inductance L1
The anode of the LED, the minus earth of the LED, the output end of the reduction voltage circuit connect the driving chip circuit
Power end, the drive end of the driving chip circuit connects the grid of the FET Q1, the leakage of the FET Q1
Pole connect the anode of the voltage-stabiliser tube ZD1, the first end of the first electric capacity C1, the first end of the second electric capacity C2 and
The negative electrode of the LED, the negative electrode of the voltage-stabiliser tube ZD1 connect the first end of the inductance L1, and the of the first electric capacity C1
Two ends connect the second end of the inductance L1, the second end ground connection of the second electric capacity C2, the first resistor R1, described second
Resistance R2 is connected in parallel with each other with the 3rd electric capacity C3 and one end after parallel connection connects source electrode and the institute of the FET Q1
State driving chip circuit current detecting end, it is in parallel after other end ground connection.
6. the delay driving circuit of courtyard landscape design illuminator as claimed in claim 5, it is characterised in that the reduction voltage circuit
Including：Low pressure difference linear voltage regulator U1, the 4th electric capacity C4 and the 5th electric capacity C5；
The input pin of the low pressure difference linear voltage regulator U1 connects the diode as the input of the reduction voltage circuit
D1 negative electrode, the output pin of the low pressure difference linear voltage regulator U1 connect the drive as the output end of the reduction voltage circuit
The power end of dynamic chip circuit, the grounding pin ground connection of the low pressure difference linear voltage regulator U1, the 4th electric capacity C4 are connected to
Between the input pin and ground of the low pressure difference linear voltage regulator U1, it is steady that the 5th electric capacity C5 is connected to the low pressure difference linearity
Between depressor U1 output pin and ground.
7. the delay driving circuit of courtyard landscape design illuminator as claimed in claim 5, it is characterised in that the driving chip
Circuit includes：Model PS9920 constant current drive control chip U2,3rd resistor R3, the 6th electric capacity C6 and the 7th electric capacity C7；
The chip power pin of the constant current drive control chip U2 connects institute as the power end of the driving chip circuit
State the output end of reduction voltage circuit, the driving of the driving pin of the constant current drive control chip U2 as the driving chip circuit
Hold and connect the grid of the FET Q1, the output electric current measure feedback pin conduct of the constant current drive control chip U2
The current detecting end of the driving chip circuit and connect the first resistor R1, the second resistance R2 and the 3rd electric capacity
One end after C3 is parallel with one another, the chip power pin of the constant current drive control chip U2 are also connected by the 3rd resistor R3
The chip for meeting the constant current drive control chip U2 enables pin, and the chip of the constant current drive control chip U2 enables pin also
It is grounded by the 6th electric capacity C6, the turn-off time of the constant current drive control chip U2 sets pin to pass through the described 7th electricity
Hold C7 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342648.0A CN107426856B (en) | 2017-05-15 | 2017-05-15 | Courtyard view lighting system and time delay drive circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342648.0A CN107426856B (en) | 2017-05-15 | 2017-05-15 | Courtyard view lighting system and time delay drive circuit thereof |
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| Publication Number | Publication Date |
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| CN107426856A true CN107426856A (en) | 2017-12-01 |
| CN107426856B CN107426856B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
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| JP2012069308A (en) * | 2010-09-22 | 2012-04-05 | Sharp Corp | Led drive circuit, led illumination lamp, led illumination equipment and led illumination system |
| CN103002627A (en) * | 2011-09-15 | 2013-03-27 | 海洋王照明科技股份有限公司 | LED drive circuit with function of time delay and LED lamp |
| WO2013136301A2 (en) * | 2012-03-16 | 2013-09-19 | Koninklijke Philips N.V. | Circuit arrangement |
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| CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
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| CN107426856B (en) | 2023-05-05 |
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