CN108289354A - Light adjusting circuit and potentiometer - Google Patents
Light adjusting circuit and potentiometer Download PDFInfo
- Publication number
- CN108289354A CN108289354A CN201810108000.1A CN201810108000A CN108289354A CN 108289354 A CN108289354 A CN 108289354A CN 201810108000 A CN201810108000 A CN 201810108000A CN 108289354 A CN108289354 A CN 108289354A
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- China
- Prior art keywords
- tap
- resistive element
- potentiometer
- adjusting circuit
- light adjusting
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Classifications
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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]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
- H01C10/34—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path the contact or the associated conducting structure riding on collector formed as a ring or portion thereof
-
- 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]
- H05B45/40—Details of LED load circuits
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
The present invention relates to light adjusting circuit and potentiometers, including：Potentiometer, resistance, bidirectional thyristor, bidirectional trigger diode and capacitance；Potentiometer includes resistive element and tap, and tap is slidably connected with resistive element, the first end connection of tap and capacitance；The first anode of bidirectional thyristor is connect with the first power input, and the second plate of bidirectional thyristor is connect by loading with second source input terminal, and the control terminal of bidirectional thyristor is connect by bidirectional trigger diode with tap；The resistance value of potentiometer is slided to second end in the first end of resistive element with tap and is gradually increased, and the outer surface of the second end of resistive element is provided with insulating layer.When tap is slided along resistive element surface, the resistance value of potentiometer increases as tap is slided from the first end of resistive element to second end, so that the brightness of load reduces, when tap slides into insulating layer, the resistance value of potentiometer is infinitely great, so that the electric current on bidirectional trigger diode is zero, realization complete switches off load.
Description
Technical field
The present invention relates to light regulating technology fields, more particularly to light adjusting circuit and potentiometer.
Background technology
Traditional potentiometer dimmer switch is all to realize to turn off by mechanical switch, and traditional dimmer switch mainly uses two
Kind mode realizes shutdown, and one is being turned off by external mechanical switch, another is turned off by the potentiometer of belt switch.It passes
The dimmer switch of system, circuit structure is complex, causes cost higher, in addition, volume is larger, is unfavorable for installing.
Invention content
Based on this, it is necessary to provide a kind of light adjusting circuit and potentiometer.
A kind of light adjusting circuit, including：Potentiometer, resistance, bidirectional thyristor, bidirectional trigger diode and capacitance；
The potentiometer includes resistive element and tap, and the tap is slidably connected with the resistive element, the tap and institute
The first end connection of capacitance is stated, the second end of the capacitance is used to connect with second source input terminal by load, the resistance
The first end of body by the resistance with the first power input for being connect；
The first anode of the bidirectional thyristor is used to connect with first power input, the bidirectional thyristor
Second plate is used to connect with the second source input terminal by the load, and the control terminal of the bidirectional thyristor passes through institute
Bidirectional trigger diode is stated to connect with the tap；
The resistance value of the potentiometer be used for the tap the resistive element first end to second end slide and it is gradual
Increase, the outer surface of the second end of the resistive element is provided with insulating layer.
The potentiometer includes carbon film plate potentiometer in one of the embodiments, and the resistive element is carbon film plate.
The insulating layer includes insulated paint in one of the embodiments,.
The insulating layer includes rubber layer in one of the embodiments,.
Further include fuse in one of the embodiments, the resistance is used to pass through the fuse and the first power supply
Input terminal connects, and the first anode of the bidirectional thyristor is used to connect by the fuse and first power input
It connects.
The thickness of the insulating layer is 1.2mm~2.2mm in one of the embodiments,.
The thickness of the insulating layer is 1.5mm in one of the embodiments,.
Further include the load in one of the embodiments,.
The load is LED in one of the embodiments,.
A kind of potentiometer, including：Resistive element and tap, the tap are slidably connected with the resistive element, the potentiometer
Resistance value be used to slide to second end in the first end of the resistive element with the tap and gradually increase, the of the resistive element
The outer surface at two ends is provided with insulating layer.
Above-mentioned light adjusting circuit and potentiometer, when tap is slided along resistive element surface, the resistance value of potentiometer is with tap
It slides from the first end of resistive element to second end and gradually increases so that the brightness of load is gradually reduced, and when tap slides into
When insulating layer, the resistance value of potentiometer reaches infinitely great so that the electric current on bidirectional trigger diode is zero, to realize to negative
What is carried complete switches off.Insulating layer is set by the second end of the resistive element in potentiometer, you can realize and turned down by brightness to loading
To the control complete switched off so that the structure of light adjusting circuit is simple, small volume, effectively reduces cost, and with being easily installed
The characteristics of.
Description of the drawings
Fig. 1 is the circuit diagram of the light adjusting circuit of an embodiment；
Fig. 2 is the circuit diagram of the light adjusting circuit of another embodiment；
Fig. 3 is the structural schematic diagram of the carbon film plate of the potentiometer of an embodiment.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that when element is referred to as " being set to " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant Listed Items.
For example, a kind of light adjusting circuit, including：Potentiometer, resistance, bidirectional thyristor, bidirectional trigger diode and capacitance；Institute
It includes resistive element and tap to state potentiometer, and the tap is slidably connected with the resistive element, and the of the tap and the capacitance
One end connects, and the second end of the capacitance is used to connect with second source input terminal by load, the first end of the resistive element
For being connect with the first power input by the resistance；The first anode of the bidirectional thyristor is used for and first electricity
Source input terminal connection, the second plate of the bidirectional thyristor are used to connect with the second source input terminal by the load
It connects, the control terminal of the bidirectional thyristor is connect by the bidirectional trigger diode with the tap；The resistance of the potentiometer
Value gradually increases, the second end of the resistive element for being slided to second end in the first end of the resistive element with the tap
Outer surface be provided with insulating layer.
In above-described embodiment, when tap is slided along resistive element surface, the resistance value of potentiometer is as tap is by resistive element
First end slide to second end and gradually increase so that the brightness of load is gradually reduced, and when tap slides into insulating layer,
The resistance value of potentiometer reaches infinitely great so that the electric current on bidirectional trigger diode is zero, to realize to the complete of load
Shutdown.Insulating layer is set by the second end of the resistive element in potentiometer, you can realizes that load is turned down by brightness to complete and closes
Disconnected control so that the structure of light adjusting circuit is simple, small volume, effectively reduces cost, and have the characteristics that be easily installed.
As shown in Figure 1, it is the light adjusting circuit of an embodiment, including：Potentiometer VR1, resistance R1, bidirectional thyristor
SCR1, bidirectional trigger diode D1 and capacitance C1；The potentiometer VR1 includes resistive element and tap, the tap and the electricity
Resistance body is slidably connected, and the tap is connect with the first end of the capacitance C1, and the second end of the capacitance C1 is for passing through load
It is connect with second source input terminal, the first end of the resistive element is used to connect by the resistance R1 and the first power input
It connects；The first anode of the bidirectional thyristor SCR1 with first power input for connecting, the bidirectional thyristor
The second plate of SCR1 is used to connect with the second source input terminal by the load, the control of the bidirectional thyristor SCR1
End processed is connect by the bidirectional trigger diode D1 with the tap.
Incorporated by reference to Fig. 1 and Fig. 3, the resistance value of the potentiometer is used for the tap 120 the first of the resistive element 110
End 111 is slided to second end 112 and is gradually increased, and the outer surface of the second end 112 of the resistive element 110 is provided with insulating layer
130.For example, the outer surface of the end of the second end 112 of the resistive element 110 is provided with insulating layer 130.For example, the pumping
First 120 activity is connected to the insulating layer 130.For example, the tap 120 be slideably positioned in the resistive element 110 and it is described absolutely
In edge layer 130.
Specifically, the load (not shown) be headlamp, for example, the load be LED (Light Emitting Diode,
Light emitting diode) lamp, for example, light adjusting circuit further includes load, the load is LED.In the present embodiment, the first power input
For zero line L, second source input terminal is zero line side A, that is to say, that the first end of the resistive element is used to pass through the resistance
R1 is connect with firewire, and the second end of the capacitance C1 is used to connect with zero curve by load, and the of the bidirectional thyristor SCR1
For being connect with firewire, the second plate of the bidirectional thyristor SCR1 is used to connect with zero curve by the load one anode.
In the present embodiment, bidirectional thyristor SCR1 and bidirectional trigger diode D1 composition bidirectional thyristor SCR1 light modulation electricity
Road changes the electric current of load, realizes the brightness adjustment to load by changing the angle of flow of bidirectional thyristor SCR1.When two-way
Thyristor SCR1 is opened, then loads opening, when bidirectional thyristor SCR1 closings, then loads closing.By resistance R1, potentiometer VR1,
The trigger circuit of bidirectional trigger diode D1 and capacitance C1 composition bidirectional thyristors SCR1, by changing the resistance value of potentiometer VR1,
The angle of flow of i.e. changeable bidirectional thyristor SCR1, and then change the brightness of load.
Specifically, tap is slided on resistive element so that the resistance value of potentiometer VR1 generates variation.Tap and resistive element electricity
The resistance value of connection, the potentiometer VR1 is slided to second end along the first end of the resistive element with tap and is gradually increased, also
It is to say, when tap slides into the first end of resistive element, and tap is connected to the first end of resistive element, the resistance value of potentiometer VR1 reaches
To minimum value, when tap is gradually slided to second end along the first end of the resistive element, the resistance value of potentiometer VR1 increases therewith
Greatly, the brightness loaded also decreases, and when the brightness of load reaches minimum, tap continues to slide to the end of second end,
Completely isolated between tap and resistive element when tap slides into insulating layer, the resistance value of potentiometer VR1 is at this time infinity, is made
It is zero to obtain the electric current flowed through on bidirectional trigger diode D1 so that bidirectional thyristor SCR1 cut-offs, so that the electricity in load
Stream is zero, and load is extinguished, and is realized and is complete switched off to load.
As shown in Fig. 2, when the tap of potentiometer VR1 slides into the end of the second end of resistive element, tap and potentiometer
The resistive element of VR1 disconnects, and is equivalent to switch K1 in Fig. 2 and is closed, another foot of tap and current potential VR1 devices is connected to ground, electricity
The voltage for holding C2 arrives 0V by clamped, prevents interference signal false triggering bidirectional trigger diode D1 and bidirectional thyristor SCR1.
In the present embodiment, insulating layer is arranged by the second end of the resistive element in potentiometer VR1, you can realize to load by
Brightness is turned down to the control complete switched off so that the structure of light adjusting circuit is simple, small volume, effectively reduces cost, and have
The characteristics of being easily installed.
It is noted that in each embodiment, sliding of the tap on resistive element can also be along linear slide
Rotation, for example, resistive element is semicircle, then tap is rotated when being slided on resistive element along resistive element, to change potentiometer
The resistance value of VR1.
In order to further such that light adjusting circuit it is small, in one embodiment, the potentiometer VR1 includes carbon film plate
Potentiometer VR1, the resistive element are carbon film plate.For example, the carbon film plate has horseshoe-shaped structure, in the present embodiment, potentiometer VR1
Material for carbon film plate potentiometer VR1, the resistive element of potentiometer VR1 is carbon film, for example, the first end of the carbon film plate is used for
It is connect with the first power input by the resistance R1, the resistance value of the potentiometer VR1 is used for the tap in the carbon
The first end of diaphragm is slided to second end and is gradually increased, and the outer surface of the second end of the carbon film plate is provided with insulating layer.
In the present embodiment, insulating layer is arranged in the second end passed through in carbon film plate so that tap and carbon film plate it is completely insulated every
From so that the resistance value of potentiometer VR1 reaches infinitely great.So that potentiometer VR1 resistance value with tap in the carbon film plate
First end slide to second end and gradually increase, and when tap slides into the insulating layer of the end of second end, resistance value reaches
To maximum so that the brightness of load can thoroughly extinguish after being gradually reduced.In the present embodiment, carbon film plate potentiometer VR1 has body
Product feature small, simple in structure, enables to light adjusting circuit small volume, and enable to circuit structure more simple.
In order to realize being dielectrically separated between tap and resistive element, in one embodiment, the insulating layer includes insulation
Paint, for example, the outer surface of the second end of the carbon film plate coats insulated paint, for example, the insulated paint includes poly-vinegar phthalimide
Resin, for example, the material of the insulated paint includes gathering cruel cruel resin, poly-vinegar phthalimide resin, poly- ammonia, epoxy resin, span
Phthalimide resin and organic siliconresin, in the present embodiment, the outer surface for passing through the second end in carbon film plate coats insulated paint, energy
Enough so that the second end of carbon film plate has good insulation performance, can thoroughly be dielectrically separated between tap and carbon film plate so that
The resistance value of potentiometer VR1 reaches infinitely great.In addition, by gathering cruel cruel resin, poly-vinegar phthalimide resin, poly- ammonia, epoxy resin, span
Carrying out insulated paint made of phthalimide resin and organic siliconresin has good wearability, enables to insulated paint in the length of tap
It is not worn still under phase friction, effectively improves the service life of potentiometer VR1.
In order to realize being dielectrically separated between tap and resistive element, in one embodiment, the insulating layer includes rubber
Layer.For example, the second end of the carbon film plate is provided with rubber bodies, rubber layer has good wearability and insulating properties, can
It is well isolated from tap and carbon film plate, also, rubber layer can bear the long-term friction of tap without wearing, and effectively increase
The service life of potentiometer VR1.
In order to enable the tap sliding of potentiometer is more smooth so that potentiometer is easier to use, in one embodiment,
The thickness of the insulating layer is 1.2mm~2.2mm, it is worth mentioning at this point that, the thickness of insulating layer is too thick, will be easy so that resistive element
Uneven surface is unfavorable for the sliding of tap, and the thickness of insulating layer is too thin, then easy to wear, and tap is caused to exist with resistive element
Second end is directly connected to, and cannot be adequately isolated tap and resistive element, in the present embodiment, the thickness of insulating layer be 1.2mm~
2.2mm enables to the surface of resistive element more smooth, is conducive to sliding of the tap in the second end of resistive element, on the other hand,
It enables to insulating layer that can have preferable wearability, effectively improves the service life of potentiometer.
In order to further such that the tap sliding of potentiometer is more smooth so that potentiometer is easier to use, and into one
Step improves the service life of potentiometer, and in one embodiment, the thickness of the insulating layer is 1.5mm, in the present embodiment, insulation
The thickness of layer is 1.5mm, enables to the difference in height smaller between the surface of resistive element and insulating layer so that the sliding surface of tap
It is more smooth, be conducive to sliding of the tap in the second end of resistive element, on the other hand, insulating layer has larger thickness, can
Enable insulating layer that there is preferable wearability, effectively improves the service life of potentiometer.
In order to enable light adjusting circuit can be disconnected in overload, in one embodiment, light adjusting circuit further includes fuse,
The resistance R1 by the fuse with the first power input for being connect, the first anode of the bidirectional thyristor SCR1
For being connect with first power input by the fuse.For example, the resistance R1 is used to pass through the fuse
It is connect with firewire, the first anode of the bidirectional thyristor SCR1 by the fuse with firewire for being connect, in this way, when adjusting
When being overloaded in optical circuit and load, fuse disconnects, and effectively avoids light adjusting circuit and load from being burnt due to overload, improves
The safety of light adjusting circuit and load.
In one embodiment, providing a kind of potentiometer includes：Resistive element and tap, the tap are slided with the resistive element
Dynamic connection, the resistance value of the potentiometer are used to slide to second end in the first end of the resistive element with the tap and gradually increase
Greatly, the outer surface of the second end of the resistive element is provided with insulating layer.
In the various embodiments described above, when tap is slided along resistive element surface, the resistance value of potentiometer is as tap is by resistance
The first end of body is slided to second end and is gradually increased so that and the brightness of load is gradually reduced, and when tap slides into insulating layer
When, the resistance value of potentiometer reaches infinitely great so that the electric current on bidirectional trigger diode is zero, to realize to the complete of load
It is fully closed disconnected.Insulating layer is set by the second end of the resistive element in potentiometer, you can realize and turned down to complete by brightness to loading
The control of shutdown so that the structure of light adjusting circuit is simple, small volume, effectively reduces cost, and have the characteristics that be easily installed.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of light adjusting circuit, which is characterized in that including：Potentiometer, resistance, bidirectional thyristor, bidirectional trigger diode and electricity
Hold；
The potentiometer includes resistive element and tap, and the tap is slidably connected with the resistive element, the tap and the electricity
The first end of appearance connects, and the second end of the capacitance is used to connect with second source input terminal by load, the resistive element
First end by the resistance with the first power input for being connect；
The first anode of the bidirectional thyristor with first power input for connecting, and the second of the bidirectional thyristor
Anode is used to connect with the second source input terminal by the load, and the control terminal of the bidirectional thyristor passes through described pair
It is connect to diac with the tap；
The resistance value of the potentiometer is used to slide to second end in the first end of the resistive element with the tap and gradually increase,
The outer surface of the second end of the resistive element is provided with insulating layer.
2. light adjusting circuit according to claim 1, which is characterized in that the potentiometer includes carbon film plate potentiometer, described
Resistive element is carbon film plate.
3. light adjusting circuit according to claim 1, which is characterized in that the insulating layer includes insulated paint.
4. light adjusting circuit according to claim 1, which is characterized in that the insulating layer includes rubber layer.
5. light adjusting circuit according to claim 1, which is characterized in that further include fuse, the resistance is for passing through institute
Fuse is stated to connect with the first power input, the first anode of the bidirectional thyristor be used for by the fuse with it is described
First power input connects.
6. light adjusting circuit according to claim 1, which is characterized in that the thickness of the insulating layer is 1.2mm~2.2mm.
7. light adjusting circuit according to claim 6, which is characterized in that the thickness of the insulating layer is 1.5mm.
8. light adjusting circuit according to claim 1, which is characterized in that further include the load.
9. light adjusting circuit according to claim 8, which is characterized in that the load is LED.
10. a kind of potentiometer, which is characterized in that including：Resistive element and tap, the tap are slidably connected with the resistive element,
The resistance value of the potentiometer is used to slide to second end in the first end of the resistive element with the tap and gradually increase, described
The outer surface of the second end of resistive element is provided with insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108000.1A CN108289354A (en) | 2018-02-02 | 2018-02-02 | Light adjusting circuit and potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108000.1A CN108289354A (en) | 2018-02-02 | 2018-02-02 | Light adjusting circuit and potentiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108289354A true CN108289354A (en) | 2018-07-17 |
Family
ID=62836507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810108000.1A Pending CN108289354A (en) | 2018-02-02 | 2018-02-02 | Light adjusting circuit and potentiometer |
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| CN (1) | CN108289354A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB832547A (en) * | 1957-03-28 | 1960-04-13 | Morganite Resistors Ltd | Combined potentiometer and switch |
| GB1221986A (en) * | 1967-07-31 | 1971-02-10 | Cutler Hammer Inc | Condition responsive proportional control systems |
| GB1410351A (en) * | 1972-01-11 | 1975-10-15 | Martin D J | Controlling the power supplied to a load |
| JPH0554977A (en) * | 1991-04-12 | 1993-03-05 | Matsushita Electric Works Ltd | Dimming device |
| JPH10256008A (en) * | 1997-03-11 | 1998-09-25 | Matsushita Electric Ind Co Ltd | Potentiometer with switch |
| JPH11213830A (en) * | 1998-01-22 | 1999-08-06 | Matsushita Electric Works Ltd | Electronic switch |
| EP2542034A1 (en) * | 2011-06-24 | 2013-01-02 | Abb Ag | Dimmer switch for phase angle method |
| US20160233671A1 (en) * | 2015-02-06 | 2016-08-11 | Jaguar Precision Industry Co., Ltd. | Control Apparatus Using Variations In Conduction Angle As Control Command |
| CN207835877U (en) * | 2018-02-02 | 2018-09-07 | Tcl-罗格朗国际电工（惠州）有限公司 | Light adjusting circuit and potentiometer |
-
2018
- 2018-02-02 CN CN201810108000.1A patent/CN108289354A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB832547A (en) * | 1957-03-28 | 1960-04-13 | Morganite Resistors Ltd | Combined potentiometer and switch |
| GB1221986A (en) * | 1967-07-31 | 1971-02-10 | Cutler Hammer Inc | Condition responsive proportional control systems |
| GB1410351A (en) * | 1972-01-11 | 1975-10-15 | Martin D J | Controlling the power supplied to a load |
| JPH0554977A (en) * | 1991-04-12 | 1993-03-05 | Matsushita Electric Works Ltd | Dimming device |
| JPH10256008A (en) * | 1997-03-11 | 1998-09-25 | Matsushita Electric Ind Co Ltd | Potentiometer with switch |
| JPH11213830A (en) * | 1998-01-22 | 1999-08-06 | Matsushita Electric Works Ltd | Electronic switch |
| EP2542034A1 (en) * | 2011-06-24 | 2013-01-02 | Abb Ag | Dimmer switch for phase angle method |
| US20160233671A1 (en) * | 2015-02-06 | 2016-08-11 | Jaguar Precision Industry Co., Ltd. | Control Apparatus Using Variations In Conduction Angle As Control Command |
| CN207835877U (en) * | 2018-02-02 | 2018-09-07 | Tcl-罗格朗国际电工（惠州）有限公司 | Light adjusting circuit and potentiometer |
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Address after: 516007 b1-b3 workshop, No.39 Hechang 6th Road East, Zhongkai high tech Zone, Huizhou City, Guangdong Province Applicant after: Legrand intelligent electric (Huizhou) Co.,Ltd. Address before: 516007 b1-b3 workshop, No.39 Hechang 6th Road East, Zhongkai high tech Zone, Huizhou City, Guangdong Province Applicant before: TCL-LEGRAND INTERNATIONAL ELECTRICAL (HUIZHOU) Co.,Ltd. |