CN106714401A - Damping circuit, LED driver and LED lighting system - Google Patents
Damping circuit, LED driver and LED lighting system Download PDFInfo
- Publication number
- CN106714401A CN106714401A CN201510500614.0A CN201510500614A CN106714401A CN 106714401 A CN106714401 A CN 106714401A CN 201510500614 A CN201510500614 A CN 201510500614A CN 106714401 A CN106714401 A CN 106714401A
- Authority
- CN
- China
- Prior art keywords
- switch circuit
- circuit
- induction
- current signal
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a damping circuit, an LED driver and an LED lighting system. The damping circuit comprises an induction module, a damping module and a bias module. The induction module comprises a first switching circuit, a first induction end and a second induction end. The first induction end receives current signals from a main power loop. The current signals control on/off of the first switching circuit. The damping module comprises a damping resistor and a second switching circuit which is connected in parallel with the damping resistor. The damping resistor is electrically connected with the second induction end. The control input end of the second switching circuit is electrically connected with the first switching circuit. The bias output end of the bias module is electrically connected with the control input end and outputs bias voltage signals. When no peak current occurs, the first switching circuit is disconnected, the bias voltage signals control the second switching circuit to be conducted, the damping resistor is bypassed and the current signals flow through the second switching circuit; and when the peak current occurs, the first switching circuit is conducted, the bias voltage signals are pulled down by the first switching circuit, the second switching circuit is not conducted and the current signals flow through the damping resistor.
Description
Technical field
A kind of relevant antihunt circuit of the present invention, the LED driver and one kind of a kind of application antihunt circuit should
With the LED illumination System of the antihunt circuit.
Background technology
Traditional incandescent lighting system, power consumption is high, short life.LED has low-power consumption, longevity because of it
The features such as life, more and more apply in daily life, particularly illuminator.LED illumination System
The trend of substituted conventional incandescent lamp illuminating system.
It is in LED illumination System, it is often necessary to use antihunt circuit, such as existing that phase controlling is installed
The LED illumination System of light modulator, phase controlled light modulator needs to coordinate electromagnetic interface filter (electromagnetic interference
Wave filter), wave filter includes electric capacity, in the incipient stage of light modulation, due to transient voltage change quickly, holds
Property device can cause the mutation of electric current, produce peak current.The peak current can bring shadow to whole circuit
Ring, working life is influenceed, while the flicker of whole illuminator can be caused.Existing solution is exactly
The damping resistance of a big resistance of being connected in main loop of power circuit, to weaken the peak current, while in the resistance
A delay switch circuit in parallel in buffer resistance.Delay switch circuit generally comprises electric capacity, by filling for electric capacity
Discharge lag accesses the time of main loop of power circuit controlling damping resistance.For the situation that LED load is constant,
The mode of delay switch circuit cooperation damping resistance can realize the suppression function to peak current.
But, when LED load is variable, delay switch can not rationally control damping electricity with load change
At the access moment of resistance, the reduction of inhibitory action certainly will be caused, so as to the flicker for causing LED occur.Therefore
It is necessary to propose a kind of new antihunt circuit to solve this problem.
The content of the invention
It is an object of the invention to provide a kind of relatively low antihunt circuit of power consumption.Additionally, the invention provides one
Plant using the LED driver and a kind of LED illumination System of the antihunt circuit.
According to the first aspect of the invention, there is provided a kind of antihunt circuit, it includes：Induction module, resistance
Buddhist nun's module.Induction module includes first switch circuit, the first induction end and the second induction end, the first sense
A current signal of the reception from a main loop of power circuit, current signal should be held to be flowed out by the second induction end,
The size of the current signal controls the first switch circuit turn-on or disconnection.Damping module, it includes one
Damping resistance and the second switch circuit in parallel with the damping resistance, one end electrical connection of the damping resistance
Second induction end, the second switch circuit includes a control signal, and control signal electrical connection should
First switch circuit.Biasing module, its biasing output end exports a bias voltage signal, biasing output end electricity
Connect the control signal.When the current signal is less than or equal to a threshold value, the first switch circuit is not
Conducting, the bias voltage signal controls the second switch circuit turn-on, the damping resistance to be bypassed, electric current letter
Number the second switch circuit is flowed through, when the current signal is more than threshold value, the first switch circuit turn-on,
The bias voltage signal is dragged down by the first switch circuit, and the second switch circuit is not turned on, the current signal stream
Through the damping resistance.
Preferably, the first switch circuit includes the first triode, and first triode includes the one or three pole
Pipe control end, the first terminal and Second terminal, the first terminal electrically connect the biasing output end, the one or three pole
Whether pipe control end monitors the current signal and controls to be turned between the first terminal and the Second terminal.
Preferably, the induction module includes a transformer, and the transformer includes inductive primary winding and sensing
Secondary windings, the inductive primary winding includes primary port one and primary port two, the electricity of primary port one
First induction end is connected, the primary port two electrically connects second induction end, the sensing secondary windings
Level port one and secondary ports two, the secondary ports one electrically connect the first triode control end, the secondary
Port two electrically connects the Second terminal.
Preferably, the induction module also includes the first voltage-regulator diode, the two ends of first voltage-regulator diode
Electrically connect the first triode control end and the secondary ports two.
Preferably, the induction module includes an inductive reactance, the two ends of the inductive reactance electrically connect this first
Induction end and second induction end, the Second terminal electrically connect first induction end, the first triode control
End processed electrically connects second induction end.
Preferably, the second switch circuit includes the second triode, and second triode includes that electrical connection should
Second triode control end of control signal, third terminal and forth terminal, the third terminal and the
Four terminals are electrically connected the two ends of the damping resistance.
Preferably, the antihunt circuit includes the second voltage-regulator diode, the two ends electricity of second voltage-regulator diode
Connect second induction end and the control signal.
A kind of another aspect of the present invention, there is provided LED driver, it includes main loop of power circuit and tool
There is the antihunt circuit for being connected on main loop of power circuit of above-mentioned configuration.
A kind of another aspect of the present invention, there is provided LED illumination System, it includes being adjusted with phase controlling
The main loop of power circuit of light device, the antihunt circuit and LED that are connected on main loop of power circuit with above-mentioned configuration
Load.
Brief description of the drawings
Two implementation methods of the invention are described by with reference to accompanying drawing, this hair may be better understood
It is bright, in the accompanying drawings：
Fig. 1 show the module diagram of antihunt circuit of the present invention；
Fig. 2 show the module diagram using a LED illumination System of antihunt circuit of the present invention；
Fig. 3 show one embodiment of antihunt circuit of the present invention and the LED drives using the antihunt circuit
The circuit diagram of dynamic device and LED illumination System；
Fig. 4 show another embodiment and the LED using the antihunt circuit of antihunt circuit of the present invention
The circuit diagram of driver and LED illumination System.
Specific embodiment
Unless otherwise defined, technical term used herein or scientific terminology should be neck belonging to the present invention
The ordinary meaning that the personage with general technical ability is understood in domain.Present patent application specification and power
" first " " second " and similar word used in sharp claim are not offered as any order, quantity
Or importance, and be used only to distinguish different parts.Equally, " one " or " one " etc.
Similar word does not indicate that quantity is limited yet, but expression has at least one." including " or "comprising"
Mean to appear in Deng similar word " including " or "comprising" before element or object cover
Now " including " or the element or object of "comprising" presented hereinafter and its equivalent, it is not excluded that its
His element or object.The similar word such as " connection " or " connected " be not limited to physics or
The connection of machinery, and can be including electrical connection, either directly still indirectly.
Fig. 1 show the module diagram of antihunt circuit of the invention.The antihunt circuit 1 includes sensing mould
Block 10, biasing module 11 and damping module 12.Induction module 10 include first switch circuit 102,
First induction end 101 and the second induction end 106, first induction end 101 are received and come from a main power
The one current signal S in loop 22, current signal S2Flowed out by second induction end 106, the electricity
Stream signal S2Size control first switch circuit 102 be turned on or off.Damping module 12 includes a resistance
Buffer resistance 120 and the second switch circuit 121 in parallel with the damping resistance 120, the damping resistance 120
One end electrically connect second induction end 106, second switch circuit 121 includes a control signal 122,
Control signal 122 electrically connects the first switch circuit 102.Biasing module 11, its biasing output end
110 one bias voltage signal S of output11, bias output end 110 and electrically connect the control signal 122.Work as electricity
Stream signal S2During less than or equal to a threshold value (when there is not peak current), first switch circuit 102 is not
Conducting, bias voltage signal S11The second switch circuit 121 is controlled to turn on, damping resistance 120 is bypassed,
Current signal S2The second switch circuit 121 is flowed through, as current signal S2During more than the threshold value (
When there is peak current), first switch circuit 102 is turned on, bias voltage signal S11By first switch circuit 102
Drag down, second switch circuit 121 is not turned on, current signal S2Flow through the damping resistance 120.
Current signal S2Whether there is peak current and determine current signal S2Whether by damping resistance
120, damping resistance 120 is realized to current signal S2Spike suppression, while in main power
During 2 normal work of loop, damping resistance 120 is bypassed by second switch circuit 121, reduces normal work
Unnecessary power consumption when making, improves service efficiency.
Fig. 2 is shown using LED driver 200 of the invention and LED illumination System 100.Should
LED illumination System 100 includes LED driver 200 and LED load 6.LED driver 200
Including main loop of power circuit 2 and antihunt circuit 1, main loop of power circuit 2 provides electric current and drives LED load 6,
Wherein main loop of power circuit 2 includes AC power 3, phase controlled light modulator 4, electromagnetic interface filter 26, whole
Stream device 20, controller 28, power transmission module 25 and shunt capacitance 27.With reference to Fig. 2, antihunt circuit
2 induction module 10 is connected on main loop of power circuit 2 with the damping module 12.
As shown in Fig. 2 phase controlled light modulator 4 carries out phase to the ac signal that AC power 3 is provided
Position modulation, after electromagnetic interface filter 26 is filtered, input rectifier 20.Rectifier 20 carries out whole to it
Stream, obtains current signal S2.Rectifier 20 connects shunt capacitance 27.Current signal S2Flow through damping electricity
Road 1.Antihunt circuit 1 is according to current signal S2Size, control electric current signal S2By damping resistance 120
Or second switch circuit 121.
Fig. 3 shows the LED illumination System circuit diagram using one embodiment of antihunt circuit of the present invention.
In the present embodiment, main loop of power circuit 2 includes AC power 3, phase controlled light modulator 4, EMI
Wave filter 26, rectifier bridge 20, controller 28, switch element 29, shunt capacitance 27 and transformer 25.
The ac signal that AC power 3 is provided is by phase controlled light modulator 4, in the present embodiment phase control
Light modulator processed 4 is TRIAC (TRAIC), 4 pairs of exchanges of phase controlled light modulator
Electric signal carries out phase-modulation, and is filtered by electromagnetic interface filter 26, and filtering letter is produced after filtering
Number.Rectifier bridge 20 includes commutation diode 270,271,272,273, and rectifier bridge 20 is to filtering signal
Rectification is carried out, current signal S is obtained2.Controller 28 can select integrated chip or discrete device, at this
Integrated chip is used in embodiment.Switch element 29 uses mos field effect transistor,
The mos field effect transistor is operated on off state.Controller 28 is to current signal
S2Carry out pulse width modulation (PWM), the connecting and disconnecting of controlling switch element 29, to produce driving
Pulse.Transformer 25 includes power primary winding 251, the first power secondary windings 252 and the second power
Secondary windings 253.Power secondary windings can be according to different application with the turn ratio of power primary winding
Change, be all in the present embodiment 1: 1.Driving pulse is coupled to the first power by transformer 25
Level winding 252, voltage-regulator diode 81 and capacitor 82 carry out surely the signal of the first power secondary windings
Pressure, generates the driving current S of stabilization6To drive LED load 6.Driving current S6Size be subject to phase
The control of position control light modulator 4.
Reference picture 3, the anode of commutation diode 270 is connected to form sun with the anode of commutation diode 271
Pole node 275, commutation diode 272 is connected to form cathode node 274 with the negative electrode of commutation diode 273,
The jointed anode node 275 of shunt capacitance 27 and cathode node 274.One end connection sun of antihunt circuit 1
Pole node 275, other end connecting valve element 29, damping resistance 1 is connected on main loop of power circuit 2.
With continued reference to Fig. 3, antihunt circuit 1 includes induction module 10, biasing module 11 and damping module
12.Induction module 10 includes bipolar junction transistor 110, voltage-regulator diode 140 and transformer 108.
Wherein bipolar junction transistor 110 can be in certain embodiments brilliant metal oxide semiconductor field-effect
Body pipe.Bipolar junction transistor 110 includes base stage 103, colelctor electrode 104 and emitter stage 105, double
Pole junction transistor 110 is operated on off state, and the voltage for being applied to base stage 103 determines colelctor electrode 104
Whether turned on emitter stage 105.If likewise, bipolar junction transistor is replaced by metal oxide partly leading
Body field-effect transistor, equally there is source electrode, grid and drain electrode, and the voltage control of grid drains and is with source electrode
No conducting.
Transformer 108 includes inductive primary winding 171, sensing secondary windings 172, and both configurations can be with
According to different application scene change, inductive primary winding 171 and sensing secondary windings 172 in the present embodiment
The number of turn is identical and Same Name of Ends each other.One end jointed anode node 275 of inductive primary winding 171 i.e. the
One induction end 101, the other end connects the second induction end 106, and inductive primary winding 171 receives current signal
S2.Sensing secondary windings 172 1 terminates the emitter stage 105 of bipolar junction transistor 110, other end connection
Voltage-regulator diode 140.With reference to Fig. 3, the voltage-regulator diode 140 is Zener diode, and its positive pole is by electricity
Resistance connection base stage 103, negative electrode connection sensing secondary windings 172, voltage-regulator diode 140 can ensure to apply
The voltage for being added in base stage 103 is unlikely to excessive, protects the bipolar junction transistor 110.Work as current signal
S2When producing peak current, inductive primary winding 171 accordingly changes, in sensing secondary windings 172
Middle generation and current signal S2The induced signal S of identical change20, by the electricity of voltage-regulator diode 140 and
Resistance is applied in the base stage 103 of bipolar junction transistor 110.Bipolar junction transistor 110 is operated in out
Off status, as induced signal S20No more than a certain threshold value, such as 5.1V when, bipolar junction transistor 110
Off-state is operated in, as induced signal S20During more than 5.1V, bipolar junction transistor 110 is operated in
Conducting state.
In the present embodiment, biasing module 11 include the second power secondary windings 253, commutation diode 111,
Capacitor 112 and voltage-regulator diode 113.The coupled power armature winding 251 of second power secondary windings 253
Driving pulse, generation secondary voltage S22, commutation diode 111, capacitor 112 and the pole of voltage stabilizing two
Pipe 113 is to secondary voltage S22Rectifying and voltage-stabilizing is carried out, direct current high level signal, such as 10V is obtained, this is straight
Stream high level signal exports a bias voltage signal S by a resistance11.In another embodiment, biasing module 11
Comprising a battery (not shown), the battery provides a bias voltage signal S11。
In the present embodiment, damping module 12 includes the metal-oxide semiconductor (MOS) of damping resistance 120 and
Field-effect transistor 121.The mos field effect transistor 121 is that N-channel is enhanced
FET, can also be other kinds of FET in other embodiment.Metal-oxide semiconductor (MOS)
Field-effect transistor 121 includes grid 123 (i.e. control signal 122), source electrode 124 and drain electrode 125.
As shown in figure 3, its source electrode 124, drain electrode 125 are connected to the two ends of damping resistance 120, grid 123
The colelctor electrode 104 of bipolar junction transistor 110 is connected, while receiving the bias voltage signal S11 of biasing module 11.
In order to ensure the safety of mos field effect transistor 121, in its grid 123 and second
One voltage-regulator diode 150 is set between induction end 106, and the voltage-regulator diode 150 is Zener diode,
Its positive pole connects the second induction end 106, negative pole connection grid 123.
As current signal S2When being not reaching to peak current, i.e., normal work when, be applied to dipole brilliant
The induced signal S of the base stage 103 of body pipe 11020Not up to threshold value, bipolar junction transistor 110 is in disconnected
Open state.Bias voltage signal S11It is fixed as direct current high level, mos field effect transistor
121 is in the conduction state, the metal oxide semiconductor field effect transistor internal resistance very little of conducting state, electricity
Stream signal S2Main loop of power circuit 2 is flowed to by mos field effect transistor 121, is damped
Resistance 120 is bypassed.
As current signal S2When there is peak current, the induced signal of bipolar junction transistor 110 is applied to
S20More than threshold value so that bipolar junction transistor 110 is in the conduction state, now bipolar junction transistor
The voltage of 110 colelctor electrodes 104 is pulled low.Bias voltage signal S11Direct current high level is fixed as, now bias letter
Number S11Dragged down by bipolar junction transistor 110.Therefore, mos field effect transistor
It is low level at 121 grid 123, is not enough to drive its conducting, metal oxide semiconductor field-effect
Transistor 121 is off, current signal S2Main loop of power circuit 2 is flowed to by damping resistance 120.
In summary, the antihunt circuit 1 can be according to current signal S2Size automatically select electric current letter
Number path passed through, reduces unnecessary energy loss, while having the effect for suppressing peak current.
Fig. 4 illustrates the LED driver and LED using the another embodiment of antihunt circuit of the present invention
Illuminator.In the present embodiment, LED illumination System 300 includes LED driver 400 and LED
Load 6.LED driver 400 includes main loop of power circuit 2 and antihunt circuit 3.With the implementation shown in Fig. 3
Unlike example, its induction module 10 includes an inductive reactance 190, and one end of inductive reactance 190 connects
First induction end 101, the other end connects the second induction end 106, while the bipolar junction transistor 110
Base stage 103 is connected to the second induction end 106 by resistance.The resistance of resistance 190 is much smaller than damping resistance
120, although being connected on always in main loop of power circuit 2 will not also be lost too many power.
Inductive reactance 190 receives current signal S2, and it is translated into corresponding voltage signal S3。
It is similar with shown in Fig. 3, as current signal S2When there is no peak current, i.e., normal work when, be applied to
The voltage signal S of the base stage 103 of bipolar junction transistor 1103Not up to threshold value, bipolar junction transistor
110 are off.Mos field effect transistor 121 is in the conduction state, electricity
Stream signal S2Main loop of power circuit 2, damping electricity are flowed to by metal oxide semiconductor field effect transistor 121
Resistance 120 is bypassed.As current signal S2When there is peak current, bipolar junction transistor 110 is applied to
Voltage signal S3More than threshold value so that bipolar junction transistor 110 is in the conduction state, now bipolar
The voltage of the colelctor electrode 104 of junction transistor 110 is pulled low.Mos field effect transistor
It is low level at 121 grid 123, mos field effect transistor 121 is in and disconnects
State, current signal S2Main loop of power circuit 2 is flowed to by damping resistance 120.
Although with reference to specific implementation method, the present invention is described, and those skilled in the art can
To understand, can be so that many modifications may be made and modification to the present invention.It is therefore contemplated that, claims
Be intended to cover all such modifications in true spirit of the present invention and scope and modification.
Claims (10)
1. a kind of antihunt circuit, including：
Induction module, it includes first switch circuit, the first induction end and the second induction end, described
One induction end receives the current signal from a main loop of power circuit, and the current signal passes through described second
Induction end flows out, and the size of the current signal controls the first switch circuit turn-on or disconnection；
Damping module, it includes a damping resistance and the second switch electricity in parallel with the damping resistance
Road, one end of the damping resistance electrically connects second induction end, and the second switch circuit includes one
Control signal, the control signal electrically connects the first switch circuit；
Biasing module, its biasing output end exports a bias voltage signal, and the biasing output end electrical connection is described
Control signal；
When the current signal is less than or equal to a threshold value, the first switch circuit is not turned on, described
Bias voltage signal controls the second switch circuit turn-on, the damping resistance to be bypassed, the current signal
The second switch circuit is flowed through, when the current signal is more than the threshold value, the first switch electricity
Road is turned on, and the bias voltage signal is dragged down by the first switch circuit, and the second switch circuit is not turned on,
The current signal flows through the damping resistance.
2. antihunt circuit as claimed in claim 1, the first switch circuit includes the first triode,
First triode includes the first triode control end, the first terminal and Second terminal, the first end
The son electrical connection biasing output end, the first triode control end is monitored the current signal and is controlled
Whether turned between the first terminal and the Second terminal.
3. antihunt circuit as claimed in claim 2, the induction module includes a transformer, described
Transformer includes inductive primary winding and sensing secondary windings, and the inductive primary winding includes primary port
One electrically connects first induction end, the primary port two with primary port two, the primary port one
Second induction end, the sensing secondary windings secondary ports one and secondary ports two are electrically connected, it is described
Secondary ports one electrically connect the first triode control end, and the secondary ports two electrically connect described second
Terminal.
4. antihunt circuit as claimed in claim 3, the induction module also includes the pole of the first voltage stabilizing two
Pipe, the two ends of first voltage-regulator diode electrically connect the first triode control end and the secondary end
Mouth two.
5. antihunt circuit as claimed in claim 2, the induction module includes an inductive reactance, institute
The two ends for stating inductive reactance electrically connect first induction end and second induction end, the Second terminal
First induction end is electrically connected, the first triode control end electrically connects second induction end.
6. the antihunt circuit as described in any one of claim 1 to 5, the second switch circuit includes
Second triode, second triode includes the second triode control of the electrical connection control signal
End, third terminal and forth terminal, the third terminal are electrically connected the damping with forth terminal
The two ends of resistance.
7. the antihunt circuit as described in any one of claim 1 to 5, the antihunt circuit includes second
Voltage-regulator diode, the two ends of second voltage-regulator diode electrically connect second induction end and the control
Input.
8. a kind of LED driver, including
One main loop of power circuit, it produces a current signal；And
One antihunt circuit, it includes：
Induction module, it includes first switch circuit, the first induction end and the second induction end, described
One induction end receives the current signal, and the current signal is flowed out by second induction end, described
The size of current signal controls the first switch circuit turn-on or disconnection；
Damping module, it includes a damping resistance and the second switch circuit in parallel with the damping resistance,
One end of the damping resistance electrically connects second induction end, and the second switch circuit includes a control
Input, the control signal electrically connects the first switch circuit；
Biasing module, its biasing output end exports a bias voltage signal, and the biasing output end electrical connection is described
Control signal；
First induction end of the induction module is connected the main work(with the other end of the damping resistance
Rate loop, when the current signal is less than or equal to a threshold value, the first switch circuit is not turned on, institute
Stating bias voltage signal controls the second switch circuit turn-on, the damping resistance to be bypassed, the electric current letter
Number the second switch circuit to the main loop of power circuit is flowed through, when the current signal is more than the threshold value
When, the first switch circuit turn-on, the bias voltage signal is dragged down by the first switch circuit, described
Second switch circuit is not turned on, and the current signal flows through the damping resistance to the main loop of power circuit.
9. LED driver as claimed in claim 8, the LED driver further includes one
Power transmission element, the power transmission element includes power primary winding, the first secondary windings and the
Secondary stage winding, the main loop of power circuit includes the power primary winding and the first secondary windings, described
Biasing module also includes the second subprime winding, and the second subprime winding electrically connects a rectifying and voltage-stabilizing mould
Block, the power transmission element transmits a power signal to described second by the power primary winding
Level winding, the rectifying and voltage-stabilizing module carries out rectifying and voltage-stabilizing to the power signal and exports the bias letter
Number.
10. a kind of LED illumination System, it includes：
One main loop of power circuit, it produces a current signal, the main loop of power circuit to be adjusted including a phase controlling
Light device, the current signal is treated by the phase controlled light modulator；
One LED load, the main loop of power circuit drives the LED load；And
One antihunt circuit, it includes：
Induction module, it includes first switch circuit, the first induction end and the second induction end, described
One induction end receives the current signal, and the current signal is flowed out by second induction end, described
The size of current signal controls the first switch circuit turn-on or disconnection；
Damping module, it includes a damping resistance and the second switch electricity in parallel with the damping resistance
Road, one end of the damping resistance electrically connects second induction end, and the second switch circuit includes one
Control signal, the control signal electrically connects the first switch circuit；
Biasing module, its biasing output end exports a bias voltage signal, and the biasing output end electrical connection is described
Control signal；
The antihunt circuit is connected on by the other end of first induction end and the damping resistance
The main loop of power circuit, when the current signal is less than or equal to a threshold value, the first switch circuit is not
Conducting, the bias voltage signal controls the second switch circuit turn-on, the damping resistance to be bypassed, institute
State current signal and flow through the second switch circuit to the main loop of power circuit, when the current signal is more than
During the threshold value, the first switch circuit turn-on, the bias voltage signal is drawn by the first switch circuit
Low, the second switch circuit is not turned on, and the current signal flows through the damping resistance to the main work(
Rate loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500614.0A CN106714401A (en) | 2015-08-14 | 2015-08-14 | Damping circuit, LED driver and LED lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500614.0A CN106714401A (en) | 2015-08-14 | 2015-08-14 | Damping circuit, LED driver and LED lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106714401A true CN106714401A (en) | 2017-05-24 |
Family
ID=58924249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510500614.0A Pending CN106714401A (en) | 2015-08-14 | 2015-08-14 | Damping circuit, LED driver and LED lighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106714401A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110057578A1 (en) * | 2009-09-04 | 2011-03-10 | Toshiba Lighting & Technology Corporation | Led lighting device and illumination apparatus |
| CN103004289A (en) * | 2010-07-13 | 2013-03-27 | 皇家飞利浦电子股份有限公司 | Active damping for dimmable driver for lighting unit |
| CN103108435A (en) * | 2011-11-14 | 2013-05-15 | 欧司朗股份有限公司 | Damping circuit, light-emitting diode (LED) driver and LED lighting system |
| CN103219717A (en) * | 2012-01-20 | 2013-07-24 | 聚积科技股份有限公司 | Dynamic damping module and driving circuit applied by same |
-
2015
- 2015-08-14 CN CN201510500614.0A patent/CN106714401A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110057578A1 (en) * | 2009-09-04 | 2011-03-10 | Toshiba Lighting & Technology Corporation | Led lighting device and illumination apparatus |
| CN103004289A (en) * | 2010-07-13 | 2013-03-27 | 皇家飞利浦电子股份有限公司 | Active damping for dimmable driver for lighting unit |
| CN103108435A (en) * | 2011-11-14 | 2013-05-15 | 欧司朗股份有限公司 | Damping circuit, light-emitting diode (LED) driver and LED lighting system |
| CN103219717A (en) * | 2012-01-20 | 2013-07-24 | 聚积科技股份有限公司 | Dynamic damping module and driving circuit applied by same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106332374B (en) | A kind of leadage circuit and leakage current control method and LED control circuit | |
| CN103327694B (en) | Silicon controlled dimming LED drive circuit | |
| CN103841725B (en) | To release control module, controllable silicon light modulation LED drive circuit and system | |
| AU2009308125B9 (en) | Photosensor circuits including a switch mode power converter | |
| EP3018794A1 (en) | A power supply unit for a self-powered intelligent electronic device | |
| CN110536506A (en) | The quick-fried lightning road of LED stroboscopic | |
| CN109842973A (en) | Electric power distribution | |
| CN203313500U (en) | Silicon controlled dimming LED driving circuit | |
| CN107787085A (en) | 0 10V of one kind light modulation isolation LED power circuits | |
| CN203340038U (en) | Thyristor trigger device | |
| CN103096595B (en) | Light emitting diode (LED) drive circuit | |
| CN104968070B (en) | A kind of LED drive circuit | |
| CN109714859B (en) | Intelligent switch control circuit | |
| CN208424843U (en) | A kind of LED linear constant-current circuit with Ripple Suppression and dimming function | |
| CN202889180U (en) | AC (Alternating Current) and DC (Direct Current) input self-adaptive circuit | |
| CN207369369U (en) | LED power and LED display device | |
| CN207531122U (en) | A kind of LED fishing lamps power supply output switching circuit | |
| CN106026709A (en) | Light-operated LED switch power supply based on overvoltage and overcurrent protection circuit | |
| CN110545594A (en) | Anti-flicker silicon controlled rectifier dimming circuit and dimming method thereof | |
| CN205005320U (en) | Driving circuit of light -emitting diode (LED) fluorescent tube | |
| CN106714401A (en) | Damping circuit, LED driver and LED lighting system | |
| CN210579355U (en) | Single live wire control circuit of diode | |
| CN105576988B (en) | A kind of coupling energy taking power supply adapting to the work of wide dynamic range bus current | |
| CN105792474B (en) | A kind of Width funtion AC driving circuit for LED power | |
| CN105163416B (en) | A kind of improved LED light thyristor regulating light drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170524 |