CN104041188B - Two-wire system dimmer switch - Google Patents
Two-wire system dimmer switch Download PDFInfo
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- CN104041188B CN104041188B CN201280067041.1A CN201280067041A CN104041188B CN 104041188 B CN104041188 B CN 104041188B CN 201280067041 A CN201280067041 A CN 201280067041A CN 104041188 B CN104041188 B CN 104041188B
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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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
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/04—Controlling
- H05B39/041—Controlling the light-intensity of the source
- H05B39/044—Controlling the light-intensity of the source continuously
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
A kind of two-wire system dimmer switch, possesses: main opening and closing circuit (10), and it is with three terminal bidirectional alternating-current switch (11) for main switch element; Frequency detection circuit (17), the frequency of its detection alternating current power supply (2); Auxiliary opening and closing circuit (18), it is with IGCT for auxiliary switch element, the carrying load current when main switch element does not turn on; Light modulation amount initialization circuit (4), it is operated by user; And control circuit (16), it detects frequency the estimated voltage zero crossing of alternating current power supply (2) based on the detection signal of frequency detection circuit (17), the output driving signal for making auxiliary opening and closing circuit (18) turn on is started in the first timing, the second timing in the stipulated time more Zao than the voltage over zero that the next one estimates stops driving the output of signal, in this two-wire system dimmer switch, when the little and main opening and closing circuit (10) of load current value becomes non-conduction, by assisting opening and closing circuit (18) to continue carrying load current. Thus, even if also make the lightness of LED bulb stablize when being connected to LED bulb as lighting load, flicker, fluctuation are reduced.
Description
Technical field
The present invention relates to the two-wire system dimmer switch of a kind of lightness for regulating lighting load.
Background technology
In the past, for the purpose of the light modulation of incandescent lamp bulb, the dimmer switch of the thyristors such as three terminal bidirectional alternating-current switch is used to be practical. Fig. 8 represents the basic circuit structure (the first past case) of the two-wire system dimmer switch 50 using three terminal bidirectional alternating-current switch 51. This two-wire system dimmer switch 50 is connected in series with alternating current power supply 2 and lighting load (incandescent lamp bulb) 3. Two-wire system dimmer switch 50 includes: three terminal bidirectional alternating-current switch 51, be connected to the gate electrode of three terminal bidirectional alternating-current switch 51 and rheostat 53 that the such as diac (diac) (diac) 52 for exporting gate drive signal is connected, fixed resistance body 54, capacitor 55, filter element 56 etc. with by the control member of user operation.
In two-wire system dimmer switch 50, when turn on-switch 57, charging to capacitor 55 from alternating current power supply 2 via rheostat 53, when the both end voltage of capacitor 55 reaches the break over voltage of diac 52, three terminal bidirectional alternating-current switch 51 turns on. Then, three terminal bidirectional alternating-current switch 51 is in the voltage over zero extinguishing arc of alternating current power supply. That is, by the half period of alternating current power supply, the triggering (conducting) of the three terminal bidirectional alternating-current switch 51 repeating to utilize diac 52 to realize and self-extinction of arc (non-conduction). Carry out phase controlling by during the resistance value triggering to three terminal bidirectional alternating-current switch 51 that regulates rheostat 53, it is possible to lighting load 3 is dimmed.
Lighting load 3 is dimmed by the two-wire system dimmer switch 50 of the first past case by changing the resistance value of rheostat 53, and the loss that therefore rheostat 53 causes is big.Further, since rheostat 53 directly applies the voltage of alternating current power supply 2, therefore cannot making self miniaturization of rheostat 53, the miniaturization of two-wire system dimmer switch 50 is also limited. Further, when the miscellaneous equipment being connected to identical alternating current power supply 2 carries out action, alternating current power supply 2 produces variation in voltage, and the lightness of lighting load 3 can change instantaneously.
In order to solve the problem points of the two-wire system dimmer switch 50 of above-mentioned first past case, in Japanese Unexamined Patent Publication 11-67479 publication, it is proposed that a kind of timing using microcomputer etc. to control to make thyristor turn on, the timing namely exporting gate drive signal dimmer switch. Additionally, this dimmer switch is 3 wire types, Fig. 9 represents the circuit structure (the second past case) being applied to two-wire system dimmer switch.
In the two-wire system dimmer switch 60 of the second past case, the gate electrode of three terminal bidirectional alternating-current switch 61 is connected to the primary side photoelectricity three terminal bidirectional alternating-current switch 63 of photoelectricity three terminal bidirectional alternating-current switch bonder 62. It addition, be connected to rectification circuit 65 between other electrode of three terminal bidirectional alternating-current switch 61, the electric power that rectified circuit 65 carries out all wave rectification gained is imported into power supply unit 66. The direct current power being converted to by power supply unit 66 is utilized to carry out drive control part 67. At this, rectification circuit 65 is applied the voltage of alternating current power supply 2, such as exchange (AC) 100V. On the other hand, for instance carry out drive control part 67 with direct current (DC) 3V～6V. Insulated in control portion 67 and thyristor 61 light by photoelectricity three terminal bidirectional alternating-current switch bonder 62. The control portion 67 resistance value according to the rheostat 68 being connected with by the control member of user operation, the timing in being stored in advance in look-up table (look-uptable) makes transistor 69 turn on. When transistor 69 turns on, electric current flows through the light emitting diode 64 of the primary side of photoelectricity three terminal bidirectional alternating-current switch bonder 62, and primary side photoelectricity three terminal bidirectional alternating-current switch 63 turns on. When the primary side photoelectricity three terminal bidirectional alternating-current switch 63 of photoelectricity three terminal bidirectional alternating-current switch bonder 62 turns on, load current starts flowing, and the grid voltage of three terminal bidirectional alternating-current switch 61 rises. When the grid voltage of three terminal bidirectional alternating-current switch 61 becomes more than threshold value, three terminal bidirectional alternating-current switch 61 turns on, flowing to the electric current of lighting load 3 in two-wire system dimmer switch 60 from photoelectricity three terminal bidirectional alternating-current switch 63 change of current to three terminal bidirectional alternating-current switch 61 from alternating current power supply 2, photoelectricity three terminal bidirectional alternating-current switch 63 becomes non-conduction.
In recent years, the LED bulb of LED (LightEmittingDiode: light emitting diode) is used to be practical, to replace incandescent lamp bulb. Therewith, the LED bulb that especially can dim in LED bulb is practical. Incandescent lamp bulb is resistive element itself, and on the other hand, LED bulb is made up of multiple LED element and drive circuit thereof as shown in Figure 10. LED drive circuit 70 includes: alternating electromotive force is carried out the rectification circuit 71 of rectification, inducer 72, for accumulating capacitor 76 that the buffer capacitor 73 of electric power, LED array 77 and LED array 77 be connected in parallel, for circulating the FET (FieldEffectTransistor: field-effect transistor) 75 of constant current and drive IC74 etc. to LED array 77. That is, LED bulb is as load, is the electronic circuit being made up of diode, IC. The load voltage of the incandescent lamp bulb in 1/2 cycle that (a) of Figure 11 represents alternating current power supply and the waveform of load current, (b) of Figure 11 represents the load voltage of LED bulb and the waveform of load current.The power factor of incandescent lamp bulb is 1, and voltage and electric current present almost identical waveform. On the other hand, when LED bulb, load current is mainly used in capacitor 73 is charged, and presents big value instantaneously, but diminish immediately while three terminal bidirectional alternating-current switch turns on.
If wanting the two-wire system dimmer switch 50 with the first past case that the LED bulb presenting this characteristic is carried out brightness adjustment control, then can produce following problem points. Figure 12 represents problem points when LED bulb is carried out brightness adjustment control by the two-wire system dimmer switch 50 with the first past case. As shown in figure 12, when three terminal bidirectional alternating-current switch 51 turns on, flow big load current instantaneously, but diminishes immediately. When the value of load current becomes less than the maintenance electric current of three terminal bidirectional alternating-current switch 51, three terminal bidirectional alternating-current switch 51 is understood self-extinction of arc and is become non-conduction. When three terminal bidirectional alternating-current switch 51 becomes non-conduction, the voltage of capacitor 73 declines, and drives IC74 to be controlled such that the electric current flowing to FET75 diminishes. Then, the electric current flowing through LED array 77 tails off, and the lightness of LED bulb reduces. Additionally, when owing to being superimposed on the effect of noise of alternating current power supply 2 and load current temporarily diminishes or as shown in Figure 13 owing to being connected to the action of the miscellaneous equipment of identical alternating current power supply 2 and when alternating current power supply 2 produces variation in voltage, the lightness of LED bulb reduces.
On the other hand, when the two-wire system dimmer switch 60 of the second past case, if photoelectricity three terminal bidirectional alternating-current switch 63 circulating current of the lasting primary side to photoelectricity three terminal bidirectional alternating-current switch bonder 62, then can make load current constant flow. But, the electric current with several mA～tens of mA flows through photoelectricity three terminal bidirectional alternating-current switch 63, therefore to maintain long-time conducting and to consume a lot of electric power. Especially since LED bulb substantially electronic circuit as above itself, power consumption is few, if therefore two-wire system dimmer switch 60 side consumes a lot of electric power, likely sinks into uncontrollable condition.
The present invention completes to solve the problem of above-mentioned past case, though the two-wire system dimmer switch that its object is to provide a kind of lightness also making LED bulb when being connected to LED bulb as lighting load to stablize and glimmer, fluctuate few.
Summary of the invention
Two-wire system dimmer switch involved in the present invention is connected in series with alternating current power supply and lighting load, it is characterised in that possess:
It is transfused to the first of alternating electromotive force and connects terminal and the second connection terminal;
Main opening and closing circuit, it is connected to above-mentioned first connection terminal and is connected between terminal with above-mentioned second, with the first thyristor for main switch element;
Rectification circuit, it is connected to above-mentioned first connection terminal and is connected between terminal with above-mentioned second;
Power circuit, it is connected to the DC side of above-mentioned rectification circuit, it is ensured that the internal electric source of above-mentioned two-wire system dimmer switch;
Frequency detection circuit, it is connected to the DC side of above-mentioned rectification circuit, and output is for detecting the detection signal of the regulation of the frequency of above-mentioned alternating current power supply;
Auxiliary opening and closing circuit, its DC side being connected to above-mentioned rectification circuit or AC, with the second thyristor for auxiliary switch element, the carrying load current when above-mentioned main switch element does not turn on, and export gate drive signal so that above-mentioned main switch element or other thyristor turn on;
Light modulation amount initialization circuit, it is operated by user, for setting the light modulation amount of the lightness for regulating above-mentioned lighting load;And
Control circuit, it detects the frequency of above-mentioned alternating current power supply based on the above-mentioned detection signal exported from said frequencies testing circuit, estimate the voltage over zero of above-mentioned alternating current power supply, the output driving signal for making above-mentioned auxiliary opening and closing circuit turn-on the first timing determined based on the light modulation amount set by above-mentioned light modulation amount initialization circuit and the voltage over zero estimated, the second timing in the voltage over zero Zao stipulated time estimated than the next one of the above-mentioned voltage over zero estimated stops the output of above-mentioned driving signal.
Additionally, preferably, it is also equipped with accurate main opening and closing circuit, this accurate main opening and closing circuit turns on according to the above-mentioned gate drive signal exported from above-mentioned auxiliary opening and closing circuit, after above-mentioned auxiliary opening and closing circuit turn-on, the carrying load current when above-mentioned main switch element does not turn on, and export the driving signal for making above-mentioned main switch element turn on.
It is further preferred, that above-mentioned main switch element is three terminal bidirectional alternating-current switch (triac),
The IGCT (thyristor) of the above-mentioned auxiliary opening and closing circuit DC side to be connected to above-mentioned rectification circuit is auxiliary switch element.
Or, it is preferred that above-mentioned main switch element is three terminal bidirectional alternating-current switch,
Two IGCTs that the above-mentioned auxiliary opening and closing circuit polarity with the AC being connected to above-mentioned rectification circuit and with above-mentioned alternating current power supply is correspondingly alternately switched on are for auxiliary switch element.
Additionally, preferably, the main opening and closing circuit of above-mentioned standard is with photoelectricity three terminal bidirectional alternating-current switch bonder (photo-triaccoupler) for switch element, the photoelectricity three terminal bidirectional alternating-current switch of the primary side of above-mentioned photoelectricity three terminal bidirectional alternating-current switch bonder and above-mentioned main switch element are connected in parallel, and the terminal of a side is connected to the gate terminal of above-mentioned main switch element, the light emitting diode of the primary side of above-mentioned photoelectricity three terminal bidirectional alternating-current switch bonder is connected with above-mentioned auxiliary opening and closing circuit connected in series
The maintenance current value of above-mentioned photoelectricity three terminal bidirectional alternating-current switch is less than the maintenance current value of above-mentioned three terminal bidirectional alternating-current switch.
Preferably, above-mentioned control circuit is when starting the brightness adjustment control of above-mentioned lighting load, and the timing output of the regulation near the above-mentioned voltage over zero estimated is for making the initial driving signal of above-mentioned auxiliary opening and closing circuit turn-on.
According to above-mentioned two-wire system dimmer switch, possess when main switch element does not turn on carrying load current and export gate drive signal so that the auxiliary opening and closing circuit of main switch element or the conducting of other thyristor, period till the determine from the light modulation amount based on voltage over zero and by the setting of light modulation amount initialization circuit first the second timing being timed to the stipulated time more Zao than next voltage over zero continues the driving signal exported for making auxiliary opening and closing circuit turn-on, and auxiliary opening and closing circuit maintains conducting state. Therefore, even if lighting load be LED bulb and after load current is from the auxiliary change of current such as opening and closing circuit to main opening and closing circuit load current value less than main switch element maintenance electric current and main opening and closing circuit becomes non-conduction, it is also possible to continue carrying load current via auxiliary opening and closing circuit etc. It, as a result, it is possible to make the lightness of LED bulb stablize, reduces flicker, fluctuation.
Accompanying drawing explanation
Fig. 1 indicates that the circuit diagram of the structure of the two-wire system dimmer switch involved by the first embodiment of the present invention.
Fig. 2 is the load voltage of the LED bulb in the first embodiment, load current and for making the oscillogram of the gate drive signal of the turn on thyristors of auxiliary opening and closing circuit.
Fig. 3 indicates that miscellaneous equipment is on the load voltage of the LED bulb of the impact of load current, load current and for making the oscillogram of the gate drive signal of the turn on thyristors of auxiliary opening and closing circuit in the first embodiment.
Fig. 4 indicates that the circuit diagram of the structure of the two-wire system dimmer switch involved by the second embodiment of the present invention.
Fig. 5 indicates that the circuit diagram of the structure of the two-wire system dimmer switch involved by the 3rd embodiment of the present invention.
Fig. 6 indicates that the circuit diagram of the structure of the two-wire system dimmer switch involved by the 4th embodiment of the present invention.
Fig. 7 is the oscillogram in each portion in the control method of the two-wire system dimmer switch involved by the 5th embodiment of the present invention.
Fig. 8 indicates that the circuit diagram of the structure of the two-wire system dimmer switch involved by the first past case.
Fig. 9 indicates that the circuit diagram of the structure of the two-wire system dimmer switch involved by the second past case.
Figure 10 indicates that the circuit diagram of the structure of the drive circuit of general LED bulb.
Figure 11 indicates that the load voltage of incandescent lamp bulb and LED bulb and the figure of the difference of load current.
Figure 12 indicates that in conventional two-wire system dimmer switch when load current value becomes less than the figure of situation of three terminal bidirectional alternating-current switch self-extinction of arc when keeping current value of three terminal bidirectional alternating-current switch.
Figure 13 indicates that in conventional two-wire system dimmer switch owing to being connected to the load current of the miscellaneous equipment of identical alternating current and the figure of the situation of the load voltage of LED bulb variation.
Detailed description of the invention
(the first embodiment)
The two-wire system dimmer switch involved by first embodiment of the present invention is described. Fig. 1 represents the circuit structure of the two-wire system dimmer switch 1A involved by the first embodiment. Two-wire system dimmer switch 1A is connected in series with alternating current power supply 2 and lighting load 3. Both can integrally possess the switch 5 lighted and extinguish controlling lighting load 3, it is also possible to switch 5 is additionally set with the light modulation rheostat 4 of two-wire system dimmer switch 1A. In the following description, exemplified with the situation being provided with switch 5 with two-wire system dimmer switch 1A dividually.
The first of two-wire system dimmer switch 1A connects terminal 1a and the second connection terminal 1b and is connected to alternating current power supply 2 or lighting load 3 and switch 5. Connect terminal 1a and the second first to connect between terminal 1b, be connected to the main opening and closing circuit 10 being main switch element 11 with the first thyristors such as three terminal bidirectional alternating-current switch. It addition, with main opening and closing circuit 10 in parallel, connect terminal 1a and the second first and connect and be connected to rectification circuit 12 between terminal 1b, rectification circuit 12 is connected to the power circuit 13 of internal power for guaranteeing this two-wire system dimmer switch 1A. Power circuit 13 includes: by being carried out first crystal tube elements 13a and transistor seconds element 13b that Darlington (Darlington) connects, being connected to the on-off circuit that the Zener diode 13c and resistive element 13d etc. of the base stage of transistor seconds element 13b are constituted; For supplying the constant voltage circuit (three terminal actuators etc.) 14 of the constant-voltage power of direct current to the control circuit 16 being made up of microprocessor etc.; And buffer capacitor 15 etc.
When switching 5 connection, the pulsating current after the rectification of rectified circuit 12 is imported into power circuit 13, exports, from power circuit, the electric power that its output voltage is arranged by the Zener voltage of Zener diode 13c. Buffer capacitor 15 is charged by this electric power, and is supplied to control circuit 16 after being reduced to the voltage (such as 3V) of regulation by constant voltage circuit 14.At this, as long as making the value of the degree that resistance value is the high electric current flowing carried out needed for action of the resistive element 13d of power circuit 13 to transistor seconds element 13b, just can by flow to via Zener diode 13c the current value of (ground) suppress low such that it is able to realize the reduction of power consumption.
The DC side lead-out terminal of rectification circuit 12 is connected to the frequency detection circuit 17 of frequency for detecting alternating current power supply 2, is imported into control circuit 16 from the detection signal of the regulation of frequency detection circuit 17 output. Additionally, the DC side lead-out terminal of rectification circuit 12 is connected to the auxiliary opening and closing circuit 18 being auxiliary switch element with the second thyristors such as IGCTs (thyristor), to lighting load 3 circulating current when this auxiliary opening and closing circuit 18 did not turn on for the period till turning at the main switch element 11 of main opening and closing circuit 10 or main switch element 11. Control circuit 16 is connected to by the light modulation amount initialization circuit 4 being made up of rheostat etc. of user operation. Additionally, in the following description, as required, main switch element is called three terminal bidirectional alternating-current switch 11, auxiliary opening and closing circuit or auxiliary switch element are called IGCT 18.
Frequency detection circuit 17 is configured to be input to the pulsating current exported from rectification circuit 12 base stage of transistor unit 17a, the detection signal that correspondingly input specifies from frequency detection circuit 17 to control circuit 16 with the frequency of alternating current power supply 2. The control circuit 16 frequency (50Hz or 60Hz) according to the detection signal detection alternating current power supply 2 of frequency detection circuit 17, and based on this estimated voltage zero crossing. Then, gate drive signal is inputted based on the frequency detected and the voltage over zero estimated etc. to the gate terminal of IGCT 18. Fig. 2 represents each waveform of the load voltage in 1/2 cycle of the alternating current power supply 2 when LED bulb is used as lighting load 3, load current and gate drive signal. About the rising (the first timing of IGCT 18 conducting) of gate drive signal, the look-up table being stored in advance in control circuit 16 is scanned for determining by the resistance value based on light modulation amount initialization circuit (rheostat) 4. The decline (IGCT 18 becomes the second non-conduction timing) of gate drive signal is set to more Zao stipulated time Δ t (such as 1ms) than the voltage over zero of alternating current power supply 2. The time Δ t of this regulation be such as by control circuit 16 based on time enough for the detection Signal estimation next one voltage over zero of frequency detection circuit 17.
Then, the concrete action of two-wire system dimmer switch 1A involved by the first embodiment is described. Think that the electric charge of buffer capacitor 15 is nearly all discharged, control circuit 16 not function when switching 5 disconnection. At this, when switching 5 connection, the pulsating current after exporting such as all wave rectification from rectification circuit 12. Thus, buffer capacitor 15 is electrically charged, and supplies direct current power from constant voltage circuit 14 to control circuit 16, and control circuit 16 starts. With this concurrently, the input detection signal from frequency detection circuit 17 to control circuit 16, therefore control circuit 16 detects the frequency of alternating current power supply 2 and estimates its voltage over zero. Then, control circuit 16 starts to export gate drive signal (making gate drive signal increase) in the first timing based on the resistance value of light modulation amount initialization circuit (rheostat) 4. When gate drive signal is imported into the gate terminal of IGCT 18, IGCT 18 turns on, and starts to lighting load 3 circulating current.Additionally, the electric current flowing through IGCT 18 also flows through the gate electrode of three terminal bidirectional alternating-current switch 11, when therefore becoming more than the gate voltage threshold of three terminal bidirectional alternating-current switch 11 and On current when its voltage and current, three terminal bidirectional alternating-current switch 11 turns on, and load current is from IGCT 18 change of current to three terminal bidirectional alternating-current switch 11. When three terminal bidirectional alternating-current switch 11 turns on, rectification circuit 12 flows through electric current hardly, IGCT 18, power circuit 13 and frequency detection circuit 17 flow through electric current hardly. When power circuit 13 is no longer flow through electric current, starts to release electric power from buffer capacitor 15, therefore ensure that the driving electric of control circuit 16. Now, continuing to input gate drive signal from control circuit 16 to the gate electrode of IGCT 18, therefore IGCT 18 is in the conduction state.
When lighting load 3 is LED bulb, as described above while IGCT 18 or three terminal bidirectional alternating-current switch 11 turn on, load current presents big value instantaneously, but diminishes immediately. Then, when the value of load current becomes less than the maintenance electric current of three terminal bidirectional alternating-current switch 11, three terminal bidirectional alternating-current switch 11 is understood self-extinction of arc and is become non-conduction, but owing to IGCT 18 is in the conduction state, therefore load current continues flowing by IGCT 18. Then, control circuit 16 is in the output (making gate drive signal decline) of the second timing stopping gate drive signal of stipulated time Δ t more Zao than the voltage over zero of alternating current power supply 2. In this stage, load current flows hardly, even if IGCT 18 becomes non-conduction, also produces the change of the lightness of lighting load 3 hardly. When IGCT 18 becomes non-conduction, from the pulsating current of rectification circuit 12 output from IGCT 18 change of current to power circuit 13 and frequency detection circuit 17, therefore control circuit 16 can estimate the next voltage over zero of alternating current power supply 2 based on the detection signal from frequency detection circuit 17 such that it is able to controls, with the voltage over zero estimated, the timing that starts to export next gate drive signal for benchmark.
So, two-wire system dimmer switch 1A possesses when not turning on for the period till turning at the main switch element of main opening and closing circuit 10 (three terminal bidirectional alternating-current switch) 11 or main switch element 11 to auxiliary opening and closing circuit (IGCT) 18 of lighting load 3 circulating current, even if therefore the value of load current becomes less than the maintenance electric current of three terminal bidirectional alternating-current switch 11 and three terminal bidirectional alternating-current switch 11 becomes non-conduction, owing to IGCT 18 is in the conduction state, therefore load current also can pass through IGCT 18 and continue flowing. Its result, the lightness of LED bulb is stable, produces macroscopic flicker, fluctuation hardly. Even if it addition, when the maximum of load current less than three terminal bidirectional alternating-current switch 11 when keeping electric current, it is also possible to continue circulating current via auxiliary opening and closing circuit (IGCT) 18 to load. Further, by stopping, in the second of stipulated time Δ t more Zao than the voltage over zero of alternating current power supply 2 the timing, the gate drive signal that the gate electrode to IGCT 18 inputs, it is possible to correctly estimate the next voltage over zero of alternating current power supply 2. It addition, as it is shown on figure 3, the miscellaneous equipment being namely connected to identical alternating current power supply 2 carries out action, owing to load current continues flowing via IGCT 18, therefore the lightness of lighting load 3 also changes hardly. It addition, load voltage waveform also less changes.Additionally, as three terminal bidirectional alternating-current switch 11, certainly select especially to use it to keep the device that current value is little.
(the second embodiment)
The two-wire system dimmer switch involved by second embodiment of the present invention is described. Fig. 4 represents the circuit structure of the two-wire system dimmer switch 1B involved by the second embodiment. Two-wire system dimmer switch 1B adds the photoelectricity three terminal bidirectional alternating-current switch bonder 20 as accurate main opening and closing circuit on the two-wire system dimmer switch 1A involved by above-mentioned first embodiment. Primary side photoelectricity three terminal bidirectional alternating-current switch 21 and the main opening and closing circuit (three terminal bidirectional alternating-current switch) 11 of photoelectricity three terminal bidirectional alternating-current switch bonder 20 are connected in parallel, and primary side light emitting diode 22 is connected in series with auxiliary opening/closing portion (IGCT) 18. Other structure is identical. As this photoelectricity three terminal bidirectional alternating-current switch 21, have selected its device keeping current value keeping the current value three terminal bidirectional alternating-current switch 11 less than main opening and closing circuit.
Then, the concrete action of two-wire system dimmer switch 1B involved by the second embodiment is described centered by difference. When voltage over zero extinguishing arc in alternating current power supply 2 of three terminal bidirectional alternating-current switch 11 and photoelectricity three terminal bidirectional alternating-current switch 21, current direction rectification circuit 12, the gate terminal of IGCT 18 it is imported into afterwards at the first timing gate drive signal of regulation, IGCT 18 turns on, and load current is flowed by IGCT 18. Now, the primary side light emitting diode 22 of photoelectricity three terminal bidirectional alternating-current switch bonder 20 is luminous, and gate drive signal is imported into the gate terminal of primary side photoelectricity three terminal bidirectional alternating-current switch 21, and photoelectricity three terminal bidirectional alternating-current switch 21 turns on. When photoelectricity three terminal bidirectional alternating-current switch 21 turns on, the load current change of current is to photoelectricity three terminal bidirectional alternating-current switch 21. At this, load current value little and during less than the maintenance current value of the three terminal bidirectional alternating-current switch 11 of main opening and closing circuit, the three terminal bidirectional alternating-current switch 11 of main opening and closing circuit is not turned on, and load current is in statu quo flowed by the photoelectricity three terminal bidirectional alternating-current switch 21 as accurate main opening and closing circuit. On the other hand, when load current value big and when becoming more than the maintenance current value of the three terminal bidirectional alternating-current switch 11 of main opening and closing circuit, the three terminal bidirectional alternating-current switch 11 of main opening and closing circuit turns on, and the load current change of current is to three terminal bidirectional alternating-current switch 11. When lighting load 3 is LED bulb, when the value of load current becomes less than the maintenance electric current of three terminal bidirectional alternating-current switch 11, three terminal bidirectional alternating-current switch 11 can self-extinction of arc and become non-conduction, but IGCT 18 turns on, the temporary transient change of current of load current is to IGCT 18. Then, the primary side light emitting diode 22 of photoelectricity three terminal bidirectional alternating-current switch bonder 20 is luminous, and primary side photoelectricity three terminal bidirectional alternating-current switch 21 turns on, and the load current change of current is to photoelectricity three terminal bidirectional alternating-current switch 21. The maintenance current value of photoelectricity three terminal bidirectional alternating-current switch 21 is as described above less than the maintenance current value of three terminal bidirectional alternating-current switch 11, therefore, it is possible to stably continue carrying load current.
Two-wire system dimmer switch 1B involved by second embodiment and the two-wire system dimmer switch 1A involved by the first embodiment compares, add photoelectricity three terminal bidirectional alternating-current switch bonder 20 as accurate main opening and closing circuit, therefore constructing slightly more complex, it becomes the main cause that cost correspondingly rises. But, even if three terminal bidirectional alternating-current switch 11 become non-conduction after, load current also flows mainly through the photoelectricity three terminal bidirectional alternating-current switch 21 of rectification circuit 12 upstream side (AC), and namely load current is without diode bridge, it is thus eliminated that the loss that diode bridge causes.Its result, the change of the lightness of LED bulb becomes very little, produces macroscopic flicker, fluctuation hardly.
(the 3rd embodiment)
The two-wire system dimmer switch involved by 3rd embodiment of the present invention is described. Fig. 5 represents the circuit structure of the two-wire system dimmer switch 1C involved by the 3rd embodiment. Two-wire system dimmer switch 1C obtains as follows: arrange two auxiliary opening and closing circuit (IGCT) 18a and 18b in the two-wire system dimmer switch 1A involved by above-mentioned first embodiment, the anode of each IGCT is connected to the AC of rectification circuit 12, negative electrode is connected to positive DC side end of rectification circuit 12. The gate terminal of each IGCT 18a and 18b it is input to after diode 25a and 25b branch from the gate drive signal of control circuit 16 output. That is, correspondingly some in two IGCT 18a and 18b is used as auxiliary opening and closing circuit with the polarity of alternating current power supply 2. Other structure is identical with the two-wire system dimmer switch 1A involved by the first embodiment with action.
Two-wire system dimmer switch 1C involved by 3rd embodiment and the two-wire system dimmer switch 1A involved by the first embodiment compares, the composition auxiliary IGCT of opening and closing circuit, resistance and capacitor are added, therefore constructing slightly more complex, it becomes the main cause that cost correspondingly rises. But, three terminal bidirectional alternating-current switch 11 become non-conduction after, load current without constitute rectification circuit 12 a diode, therefore loss correspondingly reduces. When lighting load 3 is LED bulb, load current value is very little, therefore even what reduce is loss corresponding with diode, also more can reduce the flicker of LED bulb, fluctuation.
(the 4th embodiment)
The two-wire system dimmer switch involved by 4th embodiment of the present invention is described. Fig. 6 represents the circuit structure of the two-wire system dimmer switch 1D involved by the 4th embodiment. The feature of the two-wire system dimmer switch 1C involved by two-wire system dimmer switch 1B and the three embodiment involved by the second embodiment is combined by two-wire system dimmer switch 1D, possesses the photoelectricity three terminal bidirectional alternating-current switch bonder 20 as accurate main opening and closing circuit and two auxiliary opening and closing circuit (IGCT) 18a and 18b. In the two-wire system dimmer switch 1D involved by the 4th embodiment, in the same manner as the two-wire system dimmer switch 1C involved by the 3rd embodiment, without the diode constituting rectification circuit 12 when flowing through IGCT 18a or 18b at load current, therefore loss correspondingly reduces. Therefore, compared with the two-wire system dimmer switch 1B involved by the second embodiment, variation in voltage when load current is from IGCT 18a or the 18b change of current to photoelectricity three terminal bidirectional alternating-current switch 21 diminishes, it is possible to supply stable electric power to lighting load 3. It addition, its result, the change of the lightness of LED bulb diminishes further, produces flicker, fluctuation hardly.
(the 5th embodiment)
Above-mentioned first to fourth embodiment all refers to the structure of two-wire system dimmer switch, and the 5th embodiment relates to the control method in any of the above-described two-wire system dimmer switch 1A～1D. The drive circuit 70 of the LED bulb shown in two-wire system dimmer switch 1A～1D and Figure 10 is respectively provided with and alternating electromotive force is converted to direct current power and accumulates the circuit structure of electric power to buffer capacitor. It is taken as that, for instance when switching 5 and being in disconnection for a long time, any one buffer capacitor is all discharged, and electric power is without residue.When turn on-switch 5, two-wire system dimmer switch 1A～1D starts, and control circuit 16 exports gate drive signal, thus starts to supply electric power to lighting load 3. When lighting load 3 is LED bulb, even if being initially supplied electric power, owing to drive circuit 70 is not actuated, therefore also present the action different from when stably lighting and impedance operator. That is, when starting the drive circuit 70 of LED bulb is supplied electric power, charge to buffer capacitor 73 at first. Therefore, when LED bulb starts, present the dominant impedance operator of capacitive component of this buffer capacitor 73. And, if electric current begins to flow to the drive circuit 70 of LED bulb when the voltage ratio of alternating current power supply 2 is higher, then buffer capacitor 73 is charged hastily, in the big difference of two-wire system dimmer switch 1A～produce between 1D and the drive circuit 70 of LED bulb power factor.
Between the impedance that power factor differs widely, the phase place of the voltage being applied in respectively is different from the phase place of alternating current power supply 2, if being such as set to the load voltage when the voltage of alternating current power supply 2 is 100V is-30V, then the voltage (being set to switch room voltage) connected between terminal 1a and 1b of two-wire system dimmer switch 1A～1D is 130V. That is, the voltage over zero of alternating current power supply 2 is different from the switch room voltage over zero of two-wire system dimmer switch 1A～1D. Two-wire system dimmer switch 1A～1D purpose originally is to be controlled with the voltage over zero of alternating current power supply 2 for benchmark, and above-mentioned control circuit 16 is estimated switch room voltage over zero based on the output of frequency detection circuit 17 and carries out brightness adjustment control. Therefore, if being controlled (output gate drive signal) in the timing different from the voltage over zero of alternating current power supply 2, it is likely that cannot be carried out stable brightness adjustment control originally.
Fig. 7 represents the waveform in each portion under the control method involved by the 5th embodiment. Before starting light modulation, the phase place of the voltage waveform of alternating current power supply 2 is consistent with the phase place of the switch room voltage waveform of two-wire system dimmer switch 1A～1D. In the control method involved by the 5th embodiment, when the brightness adjustment control of lighting load 3 starts, near the switch room voltage over zero that the output based on frequency detection circuit 17 deduces (such as, relative to switch room voltage over zero ± number ms within) output from control circuit 16 to auxiliary opening and closing circuit IGCT 18 gate terminal input initial gate drive signal. The timing exporting initial gate drive signal is unnecessary before voltage over zero, it is also possible to be after voltage over zero. So, it is possible to from the low level of alternating current power supply 2, start the charging of the buffer capacitor 73 of the drive circuit 70 of LED bulb. By supplying electric power from the drive circuit 70 started to LED bulb near voltage over zero (0V) like this, the impedance variation of the drive circuit 70 of two-wire system dimmer switch 1A～1D and LED bulb will not become sharply, it is possible to shared the electric power in 1/2 cycle of alternating current power supply 2 by the drive circuit 70 of two-wire system dimmer switch 1A～1D and LED bulb. It addition, in the big difference of two-wire system dimmer switch 1A～will not produce between 1D and the drive circuit 70 of LED bulb power factor, therefore, it is possible to carry out stable brightness adjustment control.
In addition, in the above description, as main switch element, exemplified with the three terminal bidirectional alternating-current switch as an ovonic switch element, but it is not limited to this, as long as make the structure that electric current two-way circulates in the same manner as three terminal bidirectional alternating-current switch, for instance can also be by the structure etc. of IGBT (InsulatedGateBipolarTransistor: insulated gate bipolar transistor), FET inverse parallel connection gained.
Description of reference numerals
1A～1D: two-wire system dimmer switch; 2: alternating current power supply; 3: lighting load; 4: light modulation amount initialization circuit (rheostat); 5: switch; 10: main opening and closing circuit; 11: main switch element (three terminal bidirectional alternating-current switch); 12: rectification circuit; 13: power circuit; 16: control circuit; 17: frequency detection circuit; 18,18a, 18b: auxiliary opening and closing circuit (auxiliary switch element, IGCT); 20: accurate main opening and closing circuit (photoelectricity three terminal bidirectional alternating-current switch bonder); 21: photoelectricity three terminal bidirectional alternating-current switch; 22: light emitting diode.
Claims (7)
1. a two-wire system dimmer switch, is connected in series with alternating current power supply and lighting load, and this two-wire system dimmer switch is characterised by possessing:
It is transfused to the first of alternating electromotive force from above-mentioned alternating current power supply and connects terminal and the second connection terminal;
Main opening and closing circuit, it is connected to above-mentioned first connection terminal and is connected between terminal with above-mentioned second, with the first thyristor for main switch element;
Rectification circuit, it connects terminal above-mentioned first and is connected between terminal with above-mentioned second and is connected with above-mentioned main opening and closing circuit in parallel;
Power circuit, it is connected to the DC side lead-out terminal of above-mentioned rectification circuit, it is ensured that the internal electric source of above-mentioned two-wire system dimmer switch;
Frequency detection circuit, it is connected to the DC side lead-out terminal of above-mentioned rectification circuit, and output is for detecting the detection signal of the regulation of the frequency of above-mentioned alternating current power supply;
Auxiliary opening and closing circuit, it is connected to the DC side lead-out terminal of above-mentioned rectification circuit, with the second thyristor for auxiliary switch element, the carrying load current when above-mentioned main switch element does not turn on, and export gate drive signal so that above-mentioned main switch element turns on;
Light modulation amount initialization circuit, it is operated by user, for setting the light modulation amount of the lightness for regulating above-mentioned lighting load; And
Control circuit, it detects the frequency of above-mentioned alternating current power supply based on the above-mentioned detection signal exported from said frequencies testing circuit, estimate the voltage over zero of above-mentioned alternating current power supply, with the voltage over zero that estimates for benchmark, by the first timing scanning for the look-up table prestored determining for making above-mentioned second thyristor conducting based on the light modulation amount set by above-mentioned light modulation amount initialization circuit, the output driving signal for making above-mentioned auxiliary opening and closing circuit turn-on is started in above-mentioned first timing, the second timing in the voltage over zero Zao stipulated time estimated than the next one of the above-mentioned voltage over zero estimated stops the output of above-mentioned driving signal, this stipulated time is time enough for estimating next voltage over zero.
2. two-wire system dimmer switch according to claim 1, it is characterised in that
Above-mentioned main switch element is three terminal bidirectional alternating-current switch,
Above-mentioned auxiliary opening and closing circuit is with the IGCT of the DC side that is connected to above-mentioned rectification circuit for auxiliary switch element.
3. two-wire system dimmer switch according to claim 2, it is characterised in that
It is also equipped with accurate main opening and closing circuit, this accurate main opening and closing circuit turns on according to the above-mentioned gate drive signal exported from above-mentioned auxiliary opening and closing circuit, after above-mentioned auxiliary opening and closing circuit turn-on, the carrying load current when above-mentioned main switch element does not turn on, and export the driving signal for making above-mentioned main switch element turn on
The main opening and closing circuit of above-mentioned standard is with photoelectricity three terminal bidirectional alternating-current switch bonder for switch element, the photoelectricity three terminal bidirectional alternating-current switch of the primary side of above-mentioned photoelectricity three terminal bidirectional alternating-current switch bonder and above-mentioned main switch element are connected in parallel, and the terminal of a side is connected to the gate terminal of above-mentioned main switch element, the light emitting diode of the primary side of above-mentioned photoelectricity three terminal bidirectional alternating-current switch bonder is connected with above-mentioned auxiliary opening and closing circuit connected in series
The maintenance current value of above-mentioned photoelectricity three terminal bidirectional alternating-current switch is less than the maintenance current value of above-mentioned three terminal bidirectional alternating-current switch.
4. two-wire system dimmer switch according to claim 1 and 2, it is characterised in that
Above-mentioned control circuit when starting the brightness adjustment control of above-mentioned lighting load, relative to the above-mentioned voltage over zero estimated ± number ms within timing output for making the initial driving signal of above-mentioned auxiliary opening and closing circuit turn-on.
5. two-wire system dimmer switch according to claim 3, it is characterised in that
Above-mentioned control circuit when starting the brightness adjustment control of above-mentioned lighting load, relative to the above-mentioned voltage over zero estimated ± number ms within timing output for making the initial driving signal of above-mentioned auxiliary opening and closing circuit turn-on.
6. a two-wire system dimmer switch, is connected in series with alternating current power supply and lighting load, and this two-wire system dimmer switch is characterised by possessing:
It is transfused to the first of alternating electromotive force from above-mentioned alternating current power supply and connects terminal and the second connection terminal;
Main opening and closing circuit, it is connected to above-mentioned first connection terminal and is connected between terminal with above-mentioned second, with three terminal bidirectional alternating-current switch for main switch element;
Rectification circuit, it connects terminal above-mentioned first and is connected between terminal with above-mentioned second and is connected with above-mentioned main opening and closing circuit in parallel;
Power circuit, it is connected to the DC side lead-out terminal of above-mentioned rectification circuit, it is ensured that the internal electric source of above-mentioned two-wire system dimmer switch;
Frequency detection circuit, it is connected to the DC side lead-out terminal of above-mentioned rectification circuit, and output is for detecting the detection signal of the regulation of the frequency of above-mentioned alternating current power supply;
Two the auxiliary opening and closing circuit being auxiliary switch element with IGCT, the anode of each IGCT is connected to one in two ac terminals of above-mentioned rectification circuit by it, the negative electrode of each IGCT is connected to positive DC side end of above-mentioned rectification circuit, using an IGCT in two IGCTs corresponding with the polarity of above-mentioned alternating current power supply as assisting opening and closing circuit, the carrying load current when above-mentioned main switch element does not turn on, and export gate drive signal so that above-mentioned main switch element turns on;
Light modulation amount initialization circuit, it is operated by user, for setting the light modulation amount of the lightness for regulating above-mentioned lighting load; And
Control circuit, it detects the frequency of above-mentioned alternating current power supply based on the above-mentioned detection signal exported from said frequencies testing circuit, estimate the voltage over zero of above-mentioned alternating current power supply, with the voltage over zero that estimates for benchmark, by the first timing scanning for the look-up table prestored determining for making the above-mentioned turn on thyristors as auxiliary opening and closing circuit based on the light modulation amount set by above-mentioned light modulation amount initialization circuit, the output driving signal for making above-mentioned auxiliary opening and closing circuit turn-on is started in above-mentioned first timing, the second timing in the voltage over zero Zao stipulated time estimated than the next one of the above-mentioned voltage over zero estimated stops the output of above-mentioned driving signal, this stipulated time is time enough for estimating next voltage over zero.
7. two-wire system dimmer switch according to claim 6, it is characterised in that
Above-mentioned control circuit when starting the brightness adjustment control of above-mentioned lighting load, relative to the above-mentioned voltage over zero estimated ± number ms within timing output for making the initial driving signal of above-mentioned auxiliary opening and closing circuit turn-on.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012007529A JP5975375B2 (en) | 2012-01-17 | 2012-01-17 | 2-wire dimmer switch |
| JP2012-007529 | 2012-01-17 | ||
| PCT/JP2012/007762 WO2013108331A1 (en) | 2012-01-17 | 2012-12-04 | Two-line dimmer switch |
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| Publication Number | Publication Date |
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| CN104041188A CN104041188A (en) | 2014-09-10 |
| CN104041188B true CN104041188B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201280067041.1A Active CN104041188B (en) | 2012-01-17 | 2012-12-04 | Two-wire system dimmer switch |
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| JP (1) | JP5975375B2 (en) |
| KR (1) | KR101626694B1 (en) |
| CN (1) | CN104041188B (en) |
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| CN102984873B (en) * | 2012-12-27 | 2018-07-20 | 莱得圣智能科技（上海）有限公司 | One wire system intelligently takes electric electronic dimming system |
| US20170019966A1 (en) * | 2014-03-11 | 2017-01-19 | Panasonic Intellectual Property Management Co., Ltd. | Dimming device |
| CN103957636A (en) * | 2014-04-28 | 2014-07-30 | Tcl-罗格朗国际电工（惠州）有限公司 | Two-wire dimming circuit |
| CN113271699B (en) * | 2015-06-08 | 2023-12-05 | 松下知识产权经营株式会社 | Light modulation device |
| JP2016001619A (en) * | 2015-08-24 | 2016-01-07 | パナソニックＩｐマネジメント株式会社 | Two-line light control switch |
| JP6994686B2 (en) * | 2018-08-10 | 2022-01-14 | パナソニックＩｐマネジメント株式会社 | Power converter |
| KR102138942B1 (en) * | 2019-02-12 | 2020-07-28 | 고관수 | Triac module |
| JP7308409B2 (en) * | 2019-09-17 | 2023-07-14 | パナソニックＩｐマネジメント株式会社 | load controller |
| CN111372360A (en) * | 2019-12-30 | 2020-07-03 | 欧普照明股份有限公司 | Phase-cut dimming circuit |
| WO2021234899A1 (en) * | 2020-05-21 | 2021-11-25 | リコー電子デバイス株式会社 | Illumination system |
| CN114025448B (en) * | 2021-12-02 | 2023-10-20 | 深圳市源立信照明科技有限公司 | Flat lamp circuit and control method thereof |
| CN217789938U (en) * | 2022-07-12 | 2022-11-11 | 常州市巨泰电子有限公司 | Lamp controller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1167470A (en) * | 1997-08-26 | 1999-03-09 | Matsushita Electric Works Ltd | Dimming switch |
| CN101594047A (en) * | 2009-03-30 | 2009-12-02 | 英飞特电子（杭州）有限公司 | A kind of simple power-on surge suppression circuit |
| JP2010118229A (en) * | 2008-11-12 | 2010-05-27 | Toshiba Lighting & Technology Corp | Illumination system |
| CN101720150A (en) * | 2008-10-09 | 2010-06-02 | 夏普株式会社 | LED drive circuit, LED illumination component, LED illumination device, and LED illumination system |
| CN101784146A (en) * | 2010-01-05 | 2010-07-21 | 英飞特电子（杭州）有限公司 | Circuit for improving silicon controlled rectifier (SCR) dimmer to adapt to capacitive load |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100374904B1 (en) * | 2000-08-24 | 2003-03-06 | 한국전기연구원 | Apparatus and method for diagnosing error of phase-controlled rectifier |
| WO2011013906A2 (en) * | 2009-07-28 | 2011-02-03 | 서울반도체 주식회사 | Dimming device for a lighting apparatus |
| US8344657B2 (en) * | 2009-11-03 | 2013-01-01 | Intersil Americas Inc. | LED driver with open loop dimming control |
| JP2011254323A (en) * | 2010-06-02 | 2011-12-15 | Panasonic Electric Works Co Ltd | Two-wire system load control device |
| JP5662708B2 (en) * | 2010-06-18 | 2015-02-04 | パナソニックＩｐマネジメント株式会社 | Light control device |
-
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- 2012-01-17 JP JP2012007529A patent/JP5975375B2/en active Active
- 2012-12-04 CN CN201280067041.1A patent/CN104041188B/en active Active
- 2012-12-04 WO PCT/JP2012/007762 patent/WO2013108331A1/en active Application Filing
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-
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- 2013-01-10 TW TW102100931A patent/TWI504316B/en active
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1167470A (en) * | 1997-08-26 | 1999-03-09 | Matsushita Electric Works Ltd | Dimming switch |
| CN101720150A (en) * | 2008-10-09 | 2010-06-02 | 夏普株式会社 | LED drive circuit, LED illumination component, LED illumination device, and LED illumination system |
| JP2010118229A (en) * | 2008-11-12 | 2010-05-27 | Toshiba Lighting & Technology Corp | Illumination system |
| CN101594047A (en) * | 2009-03-30 | 2009-12-02 | 英飞特电子（杭州）有限公司 | A kind of simple power-on surge suppression circuit |
| CN101784146A (en) * | 2010-01-05 | 2010-07-21 | 英飞特电子（杭州）有限公司 | Circuit for improving silicon controlled rectifier (SCR) dimmer to adapt to capacitive load |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI581667B (en) | 2017-05-01 |
| CN104041188A (en) | 2014-09-10 |
| KR20140102271A (en) | 2014-08-21 |
| TW201336350A (en) | 2013-09-01 |
| WO2013108331A1 (en) | 2013-07-25 |
| JP5975375B2 (en) | 2016-08-23 |
| JP2013149399A (en) | 2013-08-01 |
| TW201545606A (en) | 2015-12-01 |
| TWI504316B (en) | 2015-10-11 |
| KR101626694B1 (en) | 2016-06-01 |
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