CN107426871A - A kind of signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture - Google Patents
A kind of signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture Download PDFInfo
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- CN107426871A CN107426871A CN201710661035.3A CN201710661035A CN107426871A CN 107426871 A CN107426871 A CN 107426871A CN 201710661035 A CN201710661035 A CN 201710661035A CN 107426871 A CN107426871 A CN 107426871A
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- transistor
- circuit
- pwm
- signaling conversion
- conversion circuit
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides a kind of signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture, it is related to lighting field.Signaling conversion circuit includes a reference source, PWM obtains circuit, push-pull circuit and charge-discharge circuit, and a reference source is used to provide supply voltage；PWM obtains circuit connection PWM output ports, for obtaining pwm signal；Push-pull circuit obtains circuit with a reference source and the PWM and is connected, for realizing line transfer according to the pwm signal；Charge-discharge circuit, it is connected with the push-pull circuit, for realizing charge or discharge according to the conversion for recommending circuit, and then reference voltage is adjusted by pwm signal.Because the circuit structure of the present invention is not using the complicated sampled operational amplifier of scheme, therefore circuit of the present invention is simple, can effectively reduce circuit cost.
Description
Technical field
The present invention relates to lighting field, more particularly to a kind of signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture.
Background technology
In LED dimming drive powers in use, needing by a signaling conversion circuit that the PWM of outside is (English complete
Claim：Pulse Width Modulation, Chinese translation：Pulse width modulation) signal is converted to the benchmark of secondary sampler chip
Voltage signal, the output current for changing the function of circuit sampling benchmark so as to regulation power supply is realized, realize the effect of light modulation.
Existing signaling conversion circuit is realized by sampled operational amplifier.Because sampled operational amplifier scheme is answered
It is miscellaneous, cause circuit cost higher.
The content of the invention
The invention provides a kind of signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture, to overcome above-mentioned prior art
Present in circuit cost it is high the problem of.
Especially, the present invention proposes a kind of signaling conversion circuit, for adjusting reference voltage by pwm signal, including：
A reference source, for providing supply voltage；
PWM obtains circuit, PWM output ports is connected, for obtaining pwm signal；
Push-pull circuit, obtain circuit with a reference source and the PWM and be connected, for realizing line according to the pwm signal
Change on road；With
Charge-discharge circuit, it is connected with the push-pull circuit, for realizing charge or discharge according to the conversion for recommending circuit；
Wherein, the adjustable square wave of PWM output ports output duty cycle, it is described when the square wave is in high level section
Charge-discharge circuit charges；When the square wave is in low level section, the charge-discharge circuit electric discharge.
Further, the PWM, which obtains circuit, includes the first transistor.
Further, the first transistor is NMOS tube, and the grid of the first transistor connects the PWM output ends
Mouthful, the drain electrode of the first transistor connects a reference source, the source ground of the first transistor.
Further, the PWM, which obtains circuit, also includes pull-up resistor, and the pull-up resistor is connected in parallel on the first crystal
Between the grid of pipe and a reference source,
By the pull-up resistor when the PWM output ports are without pwm signal, the signaling conversion circuit is with full
Carry output.
Further, the push-pull circuit includes the second transistor and third transistor of series connection.
Further, the second transistor and the third transistor are NMOS tube, the grid of the second transistor
Pole connects the drain electrode of the first transistor, the source ground of the second transistor, the drain electrode of the second transistor with it is described
The source electrode connection of third transistor, the grid of the third transistor connect the grid of the first transistor, the 3rd crystal
The drain electrode of pipe connects reference voltage.
Further, the charge-discharge circuit includes first resistor, second resistance, 3rd resistor and electric capacity,
The first resistor is connected between the drain electrode of the third transistor and the reference voltage, the second resistance
One end is connected to drain electrode and the source electrode tie point of the third transistor of the second transistor, the second resistance other end
The electric capacity is connected, the other end of the electric capacity is grounded, and the 3rd resistor is in parallel with the electric capacity；
When the square wave is in high level section, the first transistor conducting, the second transistor is closed, and the described 3rd
Transistor turns, the reference voltage charge through the first resistor and the second resistance to the electric capacity；
When the square wave is in low level section, the first transistor is closed, the second transistor conducting, and the described 3rd
Transistor is closed, and the electric capacity discharges by the second resistance and the 3rd resistor.
Present invention also offers a kind of dimming LED (Light Emitting Diode) driving power, including described signaling conversion circuit and PWF light modulation electricity
Road, the PWF light adjusting circuits have the PWM output ports.
Present invention also offers a kind of light fixture, including described dimming LED (Light Emitting Diode) driving power；And
As the light source device of load, the dimming LED (Light Emitting Diode) driving power is connected to.
Signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture of the present invention, circuit is obtained by PWM and obtains PWM
Signal, line transfer is realized according to the pwm signal by push-pull circuit, charge or discharge are realized by charge-discharge circuit, entered
And reference voltage is adjusted by pwm signal.Because the circuit structure of the present invention is not using the complicated sampled operational amplification of scheme
Device, therefore circuit of the present invention is simple, can effectively reduce circuit cost.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the schematic block diagram of signaling conversion circuit according to an embodiment of the invention；
Fig. 2 is the schematic circuit of signaling conversion circuit according to an embodiment of the invention；
Fig. 3 is the schematic block diagram of dimming LED (Light Emitting Diode) driving power according to an embodiment of the invention；
Fig. 4 is the schematic block diagram of light fixture according to an embodiment of the invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Fig. 1 is the schematic block diagram of signaling conversion circuit according to an embodiment of the invention.A kind of signal conversion
Circuit 100 is used to adjust reference voltage by pwm signal, and generality can include：A reference source VCC, PWM obtains circuit 10, pushed away
Draw circuit 20 and charge-discharge circuit 30.A reference source VCC is used to provide supply voltage.PWM obtains circuit 10 and connects PWM output ends
Mouthful, for obtaining pwm signal.Push-pull circuit 20 obtains circuit 10 with a reference source VCC and PWM and is connected, for basis
The pwm signal realizes line transfer.Charge-discharge circuit 30 is connected with the push-pull circuit 20, for according to turn for recommending circuit
Change and realize charge or discharge.Wherein, the adjustable square wave of PWM output ports output duty cycle, the square wave are in high level
Duan Shi, the charge-discharge circuit 30 charge；When the square wave is in low level section, the charge-discharge circuit 30 discharges.
Signaling conversion circuit 100 of the present invention, circuit 10 is obtained by PWM and obtains pwm signal, passes through push-pull circuit
20 realize line transfer according to the pwm signal, realize charge or discharge by charge-discharge circuit 30, and then pass through pwm signal
Adjust reference voltage.Because the circuit structure of the present invention does not use the complicated sampled operational amplifier of scheme, therefore the present invention
Circuit is simple, can effectively reduce circuit cost.
Fig. 2 is the schematic circuit of signaling conversion circuit according to an embodiment of the invention.It is described in the present embodiment
PWM, which obtains circuit 10, includes the first transistor Q3.
Further, the first transistor Q3 is NMOS tube, and the grid connection PWM of the first transistor Q3 is defeated
Exit port, the drain electrode of the first transistor Q3 connect a reference source VCC, the source ground of the first transistor Q3.Pass through
The first transistor Q3 make it that pwm signal is reverse, to ensure recommending output mode and the same phase of pwm signal through push-pull circuit.
Further, the 8th resistance R8 is connected between the grid of the first transistor Q3 and the PWM output ports,
8th resistance R8 is current-limiting resistance.Further, between the PWM output ports and the first transistor Q3 source electrode simultaneously
It is clamp diode to join the second diode D2, the second diode D2.Further, the drain electrode of the first transistor Q3 and institute
State and the 5th resistance R5 is connected between a reference source VCC, the 5th resistance R5 is current-limiting resistance.The grid of the first transistor Q3 and institute
State the tenth resistance R10 of parallel connection between the first transistor Q3 source electrode, grid that the tenth resistance R10 is the first transistor Q3 and
Discharge resistance between source electrode.
Further, the PWM obtains the pull-up resistor R4 that circuit 10 also includes being used for current limliting, and the pull-up resistor R4 is simultaneously
It is associated between the grid of the first transistor Q3 and a reference source VCC, the PWM is worked as by the pull-up resistor R4
When output port is without pwm signal, the signaling conversion circuit 100 is with fully loaded output.Further, pull-up resistor R4 with it is described
The first diode D1, the first diode D1 is connected between the first transistor Q3 grid to prevent back biased diode.
In the present embodiment, the push-pull circuit 20 includes the second transistor Q2 and third transistor Q1 of series connection.
Further, the second transistor Q2 and third transistor Q1 is NMOS tube, the second transistor
Q2 grid meets the drain electrode of the first transistor Q3, the source ground of the second transistor Q2, the second transistor Q2
Drain electrode be connected with the source electrode of the third transistor Q1, the grid of the third transistor Q1 connects the first transistor Q3's
Grid, the drain electrode of the third transistor Q1 connect reference voltage Vref.
Further, the 6th is connected between the grid of the second transistor Q2 and the first transistor Q3 drain electrode
Resistance R6, the 6th resistance R6 are current-limiting resistance.The grid of the second transistor Q2 and the second transistor Q2 source electrode it
Between parallel connection the 9th resistance R9, the 9th resistance R9 is the discharge resistance between the grid and source electrode of the second transistor Q3.
Further, the charge-discharge circuit 30 includes first resistor R1, second resistance R2,3rd resistor R7 and electric capacity
C1, the first resistor R1 are connected between drain electrode and the reference voltage Vref of the third transistor Q1, and described second
Resistance R2 one end is connected to drain electrode and the source electrode tie point of the third transistor Q1 of the second transistor Q2, and described second
The resistance R2 other ends connect the electric capacity C1, the other end ground connection of the electric capacity C1, the 3rd resistor R7 and electric capacity C1
It is in parallel.
Wherein, the first resistor R1, the second resistance R2 and electric capacity C1 composition RC filter circuits, RC, which is filtered, is
In order to provide stable reference voltage to benchmark, interference signal is filtered.
PWM output ports output pwm signal is after the first transistor Q3 is reverse so that pwm signal and push-pull circuit push away
The same phase of output is drawn, circuit is recommended by what third transistor Q1 and second transistor Q2 was formed and can realize 0-100% light modulation control
System.The dim signal of PWM output ports output is the adjustable square waves of dutycycle D, and the square-wave signal directly controls the first transistor
Q3 grid.When in square wave high level section, the first transistor Q3 conductings, the first transistor Q3 VDS voltage step-downs, second
Transistor Q2 VGS step-downs, second transistor Q2 shut-offs, while third transistor Q1 is turned on, reference voltage V ref passes through first
Charged after resistance R1 and second resistance R2 to electric capacity C1.When in square wave low level section, the first transistor Q3 is closed, and second is brilliant
Body pipe Q2 VGS is uprised, second transistor Q2 conductings, while third transistor Q1 is closed, electric capacity C1 by second resistance R2 and
3rd resistor R7 discharges.So repeatedly, the dutycycle D of PWM inputs be adjustable square-wave signal, by third transistor Q1 with
After the push-pull circuit of second transistor Q2 compositions, the relation of electric capacity C1 both end voltages Vninv and PWM dim signals is：Vninv
=Vref*D, wherein, D is the dutycycle of pwm signal.So that signaling conversion circuit of the present invention has signal conversion high accuracy
The characteristics of.
Fig. 3 is the schematic block diagram of dimming LED (Light Emitting Diode) driving power according to an embodiment of the invention.The present invention also carries
A kind of dimming LED (Light Emitting Diode) driving power 1, the general signaling conversion circuit 100 and PWF that can include described in above-described embodiment are supplied
Light adjusting circuit 200, the PWF light adjusting circuits 200 have the PWM output ports.
Dimming LED (Light Emitting Diode) driving power of the present invention includes all technical characteristic of the signaling conversion circuit, therefore its
Circuit is obtained by PWM and obtains pwm signal, line transfer is realized according to the pwm signal by push-pull circuit, passes through discharge and recharge
Circuit realiration charge or discharge, and then reference voltage is adjusted by pwm signal.Because the circuit structure of the present invention is not using side
The complicated sampled operational amplifier of case, therefore circuit of the present invention is simple, can effectively reduce circuit cost.Present invention light modulation in addition
LED drive power also has the advantages of signal conversion accuracy is high.
Fig. 4 is the schematic block diagram of light fixture according to an embodiment of the invention.Present invention also offers a kind of lamp
Has I, generality may include the dimming LED (Light Emitting Diode) driving power 1 in above-described embodiment, and the light source device 2 as load, institute
The light source device 2 for stating load is connected to the dimming LED (Light Emitting Diode) driving power 1.
Light fixture of the present invention includes all technical characteristic of the signaling conversion circuit, therefore it obtains electricity by PWM
Road obtains pwm signal, and line transfer is realized according to the pwm signal by push-pull circuit, is realized and charged by charge-discharge circuit
Or electric discharge, and then reference voltage is adjusted by pwm signal, and then realize the light modulation of light fixture.Because the circuit structure of the present invention does not have
Have using the complicated sampled operational amplifier of scheme, therefore circuit of the present invention is simple, can effectively reduce circuit cost.
In the specification that this place provides, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention
Example can be put into practice in the case of these no details.In some instances, known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The application claims of shield features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments all as the present invention.
Those skilled in the art, which are appreciated that, to be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it can use any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
Replace.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in detail in the claims, embodiment claimed it is one of any
Mode it can use in any combination.
The all parts embodiment of the present invention can be realized with hardware, or to be run on one or more processor
Software module realize, or realized with combinations thereof.It will be understood by those of skill in the art that it can use in practice
Microprocessor or digital signal processor (DSP) realize some or all portions in light fixture according to embodiments of the present invention
The some or all functions of part.The present invention is also implemented as the part or complete for performing method as described herein
The equipment or program of device (for example, computer program and computer program product) in portion.Such program for realizing the present invention
It can store on a computer-readable medium, or can have the form of one or more signal.Such signal can be with
Download and obtain from internet website, either provide on carrier signal or provided in the form of any other.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of some different elements and being come by means of properly programmed computer real
It is existing.In if the unit claim of equipment for drying is listed, several in these devices can be by same hardware branch
To embody.The use of word first, second, and third does not indicate that any order.These words can be explained and run after fame
Claim.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (9)
- A kind of 1. signaling conversion circuit (100), for adjusting reference voltage by pwm signal, it is characterised in that including：A reference source (VCC), for providing supply voltage；PWM obtains circuit (10), PWM output ports is connected, for obtaining pwm signal；Push-pull circuit (20), obtain circuit (10) with a reference source (VCC) and the PWM and be connected, for being believed according to the PWM Number realize line transfer；WithCharge-discharge circuit (30), it is connected with the push-pull circuit (20), for realizing charging according to the conversion for recommending circuit or putting Electricity；Wherein, the adjustable square wave of PWM output ports output duty cycle, when the square wave is in high level section, the charge and discharge Circuit (30) charges；When the square wave is in low level section, charge-discharge circuit (30) electric discharge.
- 2. signaling conversion circuit according to claim 1, it is characterised in that the PWM, which obtains circuit (10), includes first Transistor (Q3).
- 3. signaling conversion circuit according to claim 2, it is characterised in that the first transistor (Q3) is NMOS tube, The grid of the first transistor (Q3) connects the PWM output ports, and the drain electrode of the first transistor (Q3) connects the base Quasi- source (VCC), the source ground of the first transistor (Q3).
- 4. signaling conversion circuit according to claim 3, it is characterised in that the PWM obtains circuit (10) also including upper Pull-up resistor (R4), the pull-up resistor (R4) be connected in parallel on the grid of the first transistor (Q3) and a reference source (VCC) it Between,By the pull-up resistor (R4) when the PWM output ports are without pwm signal, the signaling conversion circuit is with full Carry output.
- 5. signaling conversion circuit according to claim 3, it is characterised in that the push-pull circuit (20) includes the of series connection Two-transistor (Q2) and third transistor (Q1).
- 6. signaling conversion circuit according to claim 5, it is characterised in that the second transistor (Q2) and the described 3rd Transistor (Q1) is NMOS tube, and the grid of the second transistor (Q2) connects the first transistor (Q3) drain electrode, described The source ground of second transistor (Q2), the drain electrode of the second transistor (Q2) connect with the source electrode of the third transistor (Q1) Connect, the grid of the third transistor (Q1) connects the first transistor (Q3) grid, the leakage of the third transistor (Q1) Pole connects reference voltage (Vref).
- 7. signaling conversion circuit according to claim 6, it is characterised in that the charge-discharge circuit (30) includes the first electricity (R1), second resistance (R2), 3rd resistor (R7) and electric capacity (C1) are hindered,The first resistor (R1) is connected between the drain electrode of the third transistor (Q1) and the reference voltage (Vref), institute State second resistance (R2) one end and be connected to the drain electrode of the second transistor (Q2) and the source electrode company of the third transistor (Q1) Contact, second resistance (R2) other end connect the electric capacity (C1), and the other end of the electric capacity (C1) is grounded, and the described 3rd Resistance (R7) is in parallel with the electric capacity (C1)；When the square wave is in high level section, the first transistor (Q3) conducting, the second transistor (Q2) is closed, described Third transistor (Q1) turns on, and the reference voltage (Vref) gives institute through the first resistor (R1) and the second resistance (R2) State electric capacity (C1) charging；When the square wave is in low level section, the first transistor (Q3) is closed, second transistor (Q2) conducting, described Third transistor (Q1) is closed, and the electric capacity (C1) is by the second resistance (R2) and the 3rd resistor (R7) electric discharge.
- 8. a kind of dimming LED (Light Emitting Diode) driving power (1), it is characterised in that including the signal conversion any one of claim 1-7 Circuit (100) and PWF light adjusting circuits (200), the PWF light adjusting circuits have the PWM output ports.
- 9. a kind of light fixture (I), it is characterised in that including the dimming LED (Light Emitting Diode) driving power (1) described in claim 8；AndAs the light source device (2) of load, the dimming LED (Light Emitting Diode) driving power (1) is connected to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661035.3A CN107426871B (en) | 2017-08-04 | 2017-08-04 | Signal conversion circuit, dimming LED driving power supply and lamp |
| PCT/CN2018/098098 WO2019024877A1 (en) | 2017-08-04 | 2018-08-01 | Signal conversion circuit, dimming led driving source and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661035.3A CN107426871B (en) | 2017-08-04 | 2017-08-04 | Signal conversion circuit, dimming LED driving power supply and lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107426871A true CN107426871A (en) | 2017-12-01 |
| CN107426871B CN107426871B (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710661035.3A Active CN107426871B (en) | 2017-08-04 | 2017-08-04 | Signal conversion circuit, dimming LED driving power supply and lamp |
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| Country | Link |
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| CN (1) | CN107426871B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019024877A1 (en) * | 2017-08-04 | 2019-02-07 | 苏州欧普照明有限公司 | Signal conversion circuit, dimming led driving source and lamp |
| CN110049596A (en) * | 2019-04-28 | 2019-07-23 | 西安拓尔微电子有限责任公司 | A kind of pulse input detection circuit for white light LEDs light modulation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4313065A (en) * | 1978-12-21 | 1982-01-26 | Sony Corporation | Switching circuit with MOS field effect transistor |
| US20050269956A1 (en) * | 2002-11-11 | 2005-12-08 | Ulrich Joos | Circuit arrangement for operating at least one light-emitting diode |
| CN202340333U (en) * | 2011-11-10 | 2012-07-18 | 四川九洲光电科技股份有限公司 | PWM (Pulse-Width Modulation) light-adjusting switching circuit for LED (Light Emitting Diode) switching power supply |
| CN207135326U (en) * | 2017-08-04 | 2018-03-23 | 欧普照明股份有限公司 | A kind of signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture |
-
2017
- 2017-08-04 CN CN201710661035.3A patent/CN107426871B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4313065A (en) * | 1978-12-21 | 1982-01-26 | Sony Corporation | Switching circuit with MOS field effect transistor |
| US20050269956A1 (en) * | 2002-11-11 | 2005-12-08 | Ulrich Joos | Circuit arrangement for operating at least one light-emitting diode |
| CN202340333U (en) * | 2011-11-10 | 2012-07-18 | 四川九洲光电科技股份有限公司 | PWM (Pulse-Width Modulation) light-adjusting switching circuit for LED (Light Emitting Diode) switching power supply |
| CN207135326U (en) * | 2017-08-04 | 2018-03-23 | 欧普照明股份有限公司 | A kind of signaling conversion circuit, dimming LED (Light Emitting Diode) driving power and light fixture |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019024877A1 (en) * | 2017-08-04 | 2019-02-07 | 苏州欧普照明有限公司 | Signal conversion circuit, dimming led driving source and lamp |
| CN110049596A (en) * | 2019-04-28 | 2019-07-23 | 西安拓尔微电子有限责任公司 | A kind of pulse input detection circuit for white light LEDs light modulation |
| CN110049596B (en) * | 2019-04-28 | 2024-02-20 | 拓尔微电子股份有限公司 | Pulse input detection circuit for white light LED dimming |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107426871B (en) | 2020-05-15 |
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