CN201986220U - Two-wire system control turn-off back porch phase angle light modulator - Google Patents
Two-wire system control turn-off back porch phase angle light modulator Download PDFInfo
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- CN201986220U CN201986220U CN2011200038890U CN201120003889U CN201986220U CN 201986220 U CN201986220 U CN 201986220U CN 2011200038890 U CN2011200038890 U CN 2011200038890U CN 201120003889 U CN201120003889 U CN 201120003889U CN 201986220 U CN201986220 U CN 201986220U
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Abstract
The utility model relates to a two-wire system control turn-off back porch phase angle light modulator. Two input ends of a full-bridge rectification module of the light modulator are respectively connected with a live wire and a load, and load is connected with a null wire; the output end of the full-bridge rectification module is connected with a variable flow power supply sampling module and a field-effect tube Q3 in parallel; the variable flow power supply sampling module is connected with a variable flow power supply module; a low-voltage direct-current voltage stabilization working power supply module, a turn-off phase angle porch adjustable module and a conduction phase angle setting module are all connected in parallel between the output end of the alternating-current power supply module and the negative output end of the full-bridge rectification module; the output end of the turn-off phase angle porch adjustable module and the output end of the conductive phase angle porch adjustable module are respectively connected with the input end of a time base circuit; and the output end of the time base circuit is connected with the grid electrode of the field-effect tube Q3. In the two-wire system control turn-off back porch phase angle light modulator, only two exterior connecting wires are provided, the original power wiring of the building does not need to be changed when the light modulator is installed, and installation and wiring are convenient and simple. The light modulator can carry out light modulation to various types of loads and has very wide application.
Description
Technical field
The utility model relates to a kind of dimmer of illuminating equipment, relate in particular to a kind of construction and installation simple and convenient, be applicable to that the two-wire system control that light modulation is carried out in various loads is closed and have no progeny along the phase angle dimmer.
Background technology
Present dimmer has three-wire system and four-wire system.The dimmer of three-wire system has three external connections: installation magazine live wire of cloth in advance advances, and a zero line advances, and adds a controlled line that links to each other with load again.The dimmer of four-wire system has four external connections: installation magazine live wire of cloth in advance advances, and a zero line advances, and adds two controlled lines that link to each other with load again.And the building's electrical design regulation, the indoor magazine of common building generally only stays a live wire to advance the controlled line that is connected load with, unless specific (special) requirements is arranged.Therefore if the dimmer of three-wire system, four-wire system is installed, needing increases wiring, changes original power wiring, makes the wiring more complicated that becomes is installed.On the other hand, the scope of application of existing controllable silicon dimmer (dimmer of form is turn-offed at control phase angle, forward position) is more limited, can't carry out light modulation to the load (as the LED lamp of electricity-saving lamp, electronic ballast type fluorescent lamp, low pressure halogen lamp and electric ballast power supply form) of capacitive reactances.
Summary of the invention
The utility model mainly solves original three-wire system, the wiring more complicated is installed when the four-wire system dimmer is installed on the building, needs to increase wiring, needs the technical problem of original power wiring of change building; Provide a kind of two-wire system control to close and have no progeny along the phase angle dimmer, it has only two external connections, can directly replace regular tap and use, and need not to change original power wiring of building during installation, and the installation wiring is simple and convenient.
The utility model solves original controllable silicon dimmer simultaneously can't carry out light modulation to the load of capacitive reactances, the technical problem that the scope of application is more limited; Provide a kind of two-wire system control to close and have no progeny along the phase angle dimmer, it can carry out light modulation to various dissimilar loads, and the scope of application is very extensive.
The utility model also has a purpose to provide the control of a kind of two-wire system to close and have no progeny along the phase angle dimmer, and it is less to electromagnetic interference that electrical network produces, and overload self-insurance high safety.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: the utility model comprises the full-bridge rectification module, the unsteady flow supply module, unsteady flow power supply sampling module, low-voltage direct voltage-stabilizing working power supply module, turn-off behind the phase angle along adjustable module, the conduction phase angle setting module, time-base circuit and field effect transistor Q3, an input of full-bridge rectification module links to each other with live wire, another input of full-bridge rectification module links to each other with load, load links to each other with zero line again, the output of full-bridge rectification module and unsteady flow power supply sampling module, field effect transistor Q3 parallel connection, the input of unsteady flow power supply sampling module and an input of unsteady flow supply module link to each other, the output of unsteady flow power supply sampling module and another input of unsteady flow supply module link to each other, described low-voltage direct voltage-stabilizing working power supply module, turn-off behind the phase angle along adjustable module, the conduction phase angle setting module all is connected in parallel between the negative sense output of the output of unsteady flow supply module and full-bridge rectification module, turn-off behind the phase angle output along adjustable module, the output of conduction phase angle setting module links to each other with the input of described time-base circuit respectively, and the output of time-base circuit links to each other with the grid of described field effect transistor Q3.The utility model be as the two-terminal switch of an adjustable voltage with load (as a plurality of electronic ballast type shot-lights in parallel ...) be connected across after the serial connection and work on the civil power.The full-bridge rectification module converts the alternation civil power of 50Hz to 100Hz unidirectional pulsating voltage.The utility model is worked in voltage fluctuation scope: the voltage of dimmer two ends is only about 20VAC when load (illumination) is the brightest, and the voltage of dimmer two ends can reach about 210VAC when load (illumination) is the darkest, only several watts low-power consumption at zero point of power pack when unsteady flow power supply sampling module and unsteady flow supply module have been realized accomplishing high pressure in so big scope range of the fluctuation of voltage, power pack still has sufficient electric current to guarantee the D.C. regulated power supply operate as normal during low pressure.The conduction phase angle setting module and turn-off the phase angle after be to guarantee that dimmer can be to normal light modulation work in the voltage range that loads on 15%-92% along adjustable module.The conduction phase angle setting module has been determined the minimum magnitude of voltage (being commonly called as minimum brightness) that obtains of load when the nominal line voltage, and it is the fixed value that can set (generally is set in line voltage value 15%).Turn-offing behind the phase angle along adjustable module is the circuit that at any time load is carried out brightness regulation for the user.
As preferably, the output of described unsteady flow supply module links to each other with the input of unusual identification of working power and automatic closing module, and working power is discerned unusually and the output of automatic closing module and the grid of described field effect transistor Q3 link to each other.Unusual identification of working power and automatic closing module are to prevent that field effect transistor in the major loop from slipping into the amplification region at work and the protective circuit of burning.Very little because of being in its Vds of saturation region during the conducting of field effect transistor operate as normal, the oneself power consumption of field effect transistor is also not too big under the bigger current conditions, though and field effect transistor by the time high pressure Ids to be arranged between d, the s be 0 substantially, so oneself power consumption is also extremely low.It is insufficient when high to have grid voltage only, makes field effect transistor slip into the amplification region when conducting, and this moment, the power consumption of field effect transistor was just very big, very easily causes field effect transistor moment to damage when load is big.In unusual identification of working power and the automatic closing module sampling to the magnitude of voltage of low-voltage direct voltage-stabilizing working power supply module is arranged, when causing the voltage instability of low-voltage direct voltage-stabilizing working power supply module for a certain reason or dropping to a certain numerical value, working power is discerned unusually and automatic closing module will be judged and export a low level automatically, cut off the logic voltage of time-base circuit output and force the grid zero setting of field effect transistor, thereby field effect transistor is ended and turn-off, prevented that low excessively grid voltage from making field effect transistor enter the amplification region.
As preferably, be connected with the overload sampling module between the negative sense output of described full-bridge rectification module and the source electrode of field effect transistor Q3, the output of described overload sampling module links to each other with the input of the automatic closing module of overload, the output of described unsteady flow supply module links to each other with the alarm indicating module, the alarm indicating module is connected with time-base circuit again, and the output of the automatic closing module of described overload also links to each other with the alarm indicating module.Overload sampling module and the automatic closing module of overload design for fail safe: when bearing power has surpassed the nominal rating power of product in the user uses, overload sampling module and the automatic closing module of overload can be closed field effect transistor automatically, cut-out has been avoided because excessive electric current makes full-bridge rectification module and field effect transistor cross cause thermal damage the power supply of load.During the load overpower; the voltage that excessive electric current produces on the resistance of overload in the sampling module has surpassed and has transshipped the threshold voltage of automatic closing module; thereby the zero setting end that makes low level of the automatic closing module output of overload go to control basic circuit makes the time-base circuit output low level; trigger the alarm indicating module simultaneously; send overload warning; the grid that this low level of output is put simultaneously field effect transistor again by force is a low level, duplicate protection field effect transistor, reach security purpose.
As preferably, described unsteady flow power supply sampling module comprises resistance R 0 and the adjustable resistance RW that is in series, described unsteady flow supply module comprises resistance R 1, resistance R 13, resistance R 14, voltage stabilizing didoe DW3, voltage stabilizing didoe DW4, LED 1, LED 2 and controllable silicon SCR 1, controllable silicon SCR 2, resistance R 14 and controllable silicon SCR 2 parallel connections, resistance R 13 and LED 1, the series circuit that LED 2 is linked to be links to each other with this parallel circuits again, resistance R 1 and controllable silicon SCR 1, voltage stabilizing didoe DW4 is linked to be series circuit, the positive pole of voltage stabilizing didoe DW3 extremely links to each other with the control of controllable silicon SCR 1, the negative pole of voltage stabilizing didoe DW3 is linked the also contact of resistance R 0 and adjustable resistance RW, and the control utmost point of controllable silicon SCR 2 is linked the also contact of resistance R 1 and controllable silicon SCR 1.
As preferably, comprise adjustable resistance W and the adjustable resistance WH that is linked to be parallel circuits along adjustable module behind the described shutoff phase angle, described conduction phase angle setting module comprises resistance R 2 and the diode D5 that is linked to be series circuit, the negative pole of diode D5 links to each other with the movable end of adjustable resistance W, the positive pole of diode D5 also links to each other with the movable end of adjustable resistance W through capacitor C 1, resistance R 3, one end of the parallel circuits of adjustable resistance W and adjustable resistance WH links to each other with the negative pole of diode D5, and the other end of this parallel circuits links to each other with described time-base circuit.
As preferably, unusual identification of described working power and automatic closing module comprise triode Q1, triode Q2, resistance R 10, resistance R 11, resistance R 12 and voltage stabilizing didoe DW2, resistance R 10 connects the collector electrode of triode Q1, the base stage of triode Q1 links to each other through the positive pole of resistance R 11 with voltage stabilizing didoe DW2, the negative pole of voltage stabilizing didoe DW2 links to each other with described time-base circuit, the positive pole of voltage stabilizing didoe DW2 is again through the emitter of resistance R 12 and triode Q1, the emitter of triode Q2 also connects back ground connection, the base stage of triode Q2 links to each other with the collector electrode of triode Q1, and the collector electrode of triode Q2 links to each other with the grid of described field effect transistor Q3.
As preferably, described overload sampling module comprises resistance R 8, resistance R 9 and capacitor C D2, the also contact of resistance R 8 and resistance R 9 links to each other with the source electrode of described field effect transistor again, the two ends of capacitor C D2 respectively with the other end of resistance R 8, the other end of resistance R 9 links to each other, the automatic closing module of described overload comprises resistance R 6, capacitor C 5, diode D6 and controllable silicon SCR 3, described alarm indicating module comprises resistance R 5 and the LED 3 that is in series, one end of resistance R 6 with after the positive pole of diode D6 links to each other again the grid through resistance R 7 and described field effect transistor link to each other, the other end of resistance R 6 links to each other with described time-base circuit, the negative pole of diode D6 links to each other with described time-base circuit with resistance R 5 and after connecing again, the positive pole of controllable silicon SCR 3 links to each other with the negative pole of diode D6, the minus earth of controllable silicon SCR 3, the control utmost point of controllable silicon SCR 3 are linked the also contact of resistance R 8 and capacitor C D2.
As preferably, base chip when described time-base circuit adopts the 7555MOS type.Time-base circuit is to realize the core of back along the adjustable logic function in phase angle, base chip 7555 when the utility model adopts the 7555MOS type, rather than base chip during 555 binode types.Dozens or even hundreds of/one of base chip when the operating current of base chip only is the binode type during MOS type, little power consumption of base chip makes unsteady flow supply module and low-voltage direct voltage-stabilizing working power supply module can realize littler micropower during the MOS type, thereby reaches higher efficient and energy-saving effect.
The beneficial effects of the utility model are: 1. the scope of application is extensive, can carry out light modulation to various dissimilar loads.2. have only two external connections, can directly replace regular tap and use, need not to change original power wiring of building during installation, construction and installation are simple and convenient.3. overload self-insurance high safety.4. less to the electromagnetic interference of electrical network generation, have good environmental protection superiority.5. circuit is simple, and cost is low, the reliability height.
Description of drawings
Fig. 1 is a kind of schematic block circuit diagram of the present utility model.
Fig. 2 is a kind of circuit theory diagrams of the present utility model.
1. full-bridge rectification modules among the figure, 2. unsteady flow supply module, 3. unsteady flow power supply sampling module, 4. low-voltage direct voltage-stabilizing working power supply module, behind the shutoff phase angle along adjustable module, 6. conduction phase angle setting module, 7. time-base circuit, 9. load, 10. working power is unusual discerns and automatic closing module, 11. the overload sampling module, the automatic closing module of 12. overloads, 13. alarm indicating modules.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: the two-wire system control of present embodiment is closed and is had no progeny along the phase angle dimmer, as shown in Figure 1, comprise full-bridge rectification module 1, unsteady flow supply module 2, unsteady flow power supply sampling module 3, low-voltage direct voltage-stabilizing working power supply module 4, discern unusually and automatic closing module 10, overload sampling module 11, the automatic closing module 12 of overload, alarm indicating module 13 and field effect transistor Q3 along adjustable module 5, conduction phase angle setting module 6, time-base circuit 7, working power after turn-offing the phase angle.An input of full-bridge rectification module 1 links to each other with live wire, another input of full-bridge rectification module 2 links to each other with load 9, load 9 links to each other with zero line again, the output of full-bridge rectification module 1 and unsteady flow power supply sampling module 3, field effect transistor Q3 parallel connection, the input of unsteady flow power supply sampling module 3 and an input of unsteady flow supply module 2 link to each other, the output of unsteady flow power supply sampling module 3 and another input of unsteady flow supply module 2 link to each other, low-voltage direct voltage-stabilizing working power supply module 4, turn-off behind the phase angle along adjustable module 5, conduction phase angle setting module 6 all is connected in parallel between the negative sense output of the output of unsteady flow supply module 2 and full-bridge rectification module 1, turn-off behind the phase angle output along adjustable module 5, the output of conduction phase angle setting module 6 links to each other with the input of time-base circuit 7 respectively, and the output of time-base circuit 7 links to each other with the grid of field effect transistor Q3.The input of unusual identification of the output of unsteady flow supply module 2 and working power and automatic closing module 10 links to each other, and working power is discerned unusually and the output of automatic closing module 10 and the grid of field effect transistor Q3 link to each other.Overload sampling module 11 is connected between the source electrode of the negative sense output of full-bridge rectification module 1 and field effect transistor Q3, the output of overload sampling module 11 links to each other with the input of the automatic closing module 12 of overload, the output of unsteady flow supply module 2 links to each other with alarm indicating module 13, alarm indicating module 13 is connected with time-base circuit 7 again, transship automatic closing module 12 output also with alarm indicating module 13 and link to each other.What the load in the present embodiment referred to is exactly lighting.
The concrete circuit diagram of present embodiment as shown in Figure 2, full-bridge rectification module 1 is made of diode D1-D4, input termination R terminals of full-bridge rectification module, another input of full-bridge rectification module connects the L terminals through K switch, fuse F, fuse FT.Be connected with piezo-resistance RV between R terminals and the L terminals.R terminals, L terminals are exactly that the two-wire system control of present embodiment is closed and had no progeny along two external connections of phase angle dimmer, when being installed to present embodiment on the building wall, as long as an end of R terminals and lighting is linked to each other, the other end connecting to neutral line of lighting, the L terminals line of starting to exchange fire gets final product.Base chip when as shown in Figure 2, the time-base circuit 7 of present embodiment adopts the 7555MOS type.Unsteady flow power supply sampling module 3 comprises resistance R 0 and the adjustable resistance RW that is in series, unsteady flow supply module 2 comprises resistance R 1, resistance R 13, resistance R 14, voltage stabilizing didoe DW3, voltage stabilizing didoe DW4, LED 1, LED 2 and controllable silicon SCR 1, controllable silicon SCR 2, resistance R 14 and controllable silicon SCR 2 parallel connections, resistance R 13 and LED 1, the series circuit that LED 2 is linked to be links to each other with this parallel circuits again, this parallel circuits links to each other through 2 pin of capacitor C 1 time base chip with the 7555MOS type, resistance R 1 and controllable silicon SCR 1, voltage stabilizing didoe DW4 is linked to be series circuit, the positive pole of voltage stabilizing didoe DW3 extremely links to each other with the control of controllable silicon SCR 1, the negative pole of voltage stabilizing didoe DW3 is linked the also contact of resistance R 0 and adjustable resistance RW, and the control utmost point of controllable silicon SCR 2 is linked the also contact of resistance R 1 and controllable silicon SCR 1.Comprise adjustable resistance W and the adjustable resistance WH that is linked to be parallel circuits along adjustable module 5 after turn-offing the phase angle, conduction phase angle setting module 6 comprises resistance R 2 and the diode D5 that is linked to be series circuit, the negative pole of diode D5 links to each other with the movable end of adjustable resistance W, the positive pole of diode D5 also links to each other with the movable end of adjustable resistance W through capacitor C 1, resistance R 3, one end of the parallel circuits of adjustable resistance W and adjustable resistance WH links to each other with the negative pole of diode D5, and the other end of this parallel circuits links to each other through 6 pin, 7 pin of resistance R 4 time base chip with the 7555MOS type.Low-voltage direct voltage-stabilizing working power supply module 4 comprises voltage stabilizing didoe DW1 and the capacitor C D1 that is in parallel, and an end of this parallel circuits links to each other with the negative pole of diode D5, the other end ground connection of this parallel circuits.Unusual identification of working power and automatic closing module 10 comprise triode Q1, triode Q2, resistance R 10, resistance R 11, resistance R 12 and voltage stabilizing didoe DW2, resistance R 10 connects the collector electrode of triode Q1, the base stage of triode Q1 links to each other through the positive pole of resistance R 11 with voltage stabilizing didoe DW2,8 pin of the negative pole of voltage stabilizing didoe DW2 time base chip with the 7555MOS type link to each other, the positive pole of voltage stabilizing didoe DW2 is again through the emitter of resistance R 12 and triode Q1, the emitter of triode Q2 also connects back ground connection, the base stage of triode Q2 links to each other with the collector electrode of triode Q1, and the collector electrode of triode Q2 links to each other with the grid of field effect transistor Q3.Overload sampling module 11 comprises resistance R 8, resistance R 9 and capacitor C D2, and the also contact of resistance R 8 and resistance R 9 links to each other with the source electrode of field effect transistor Q3 again, and the two ends of capacitor C D2 link to each other with the other end of resistance R 8, the other end of resistance R 9 respectively.The automatic closing module 12 of transshipping comprises resistance R 6, capacitor C 5, diode D6 and controllable silicon SCR 3, alarm indicating module 13 comprises resistance R 5 and the LED 3 that is in series, one end of resistance R 6 with link to each other through the grid of resistance R 7 again after the positive pole of diode D6 links to each other with field effect transistor Q3,3 pin of the other end of resistance R 6 time base chip with the 7555MOS type link to each other, 4 pin of time base chip link to each other the negative pole of diode D6 again with the 7555MOS type with resistance R 5 and after connecing, the positive pole of controllable silicon SCR 3 links to each other with the negative pole of diode D6, the minus earth of controllable silicon SCR 3, the control utmost point of controllable silicon SCR 3 are linked the also contact of resistance R 8 and capacitor C D2.
＜1 〉. civil power 220VAC is after the full-wave rectification of the full-bridge rectification module that diode D1-D4 constitutes, at field effect transistor Q3(off state) the approximate unidirectional pulsating voltage of 310Vp-p/100Hz positive polarity of two ends generation.The resistance of resistance R 9 very I is ignored, as long as closing with conduction phase angle of field effect transistor Q3 is controlled at 0-180 ° and 180 °-360 ° respectively, i.e. the brightness of adjustable lighting.
＜2 〉. the unidirectional pulsating voltage of above-mentioned 310Vp-p/100Hz positive polarity is through resistance R 13, LED 1, LED 2, resistance R 14(or controllable silicon SCR 2), diode D5 is to capacitor C D1 and voltage stabilizing didoe DW1 charging and voltage stabilizing, and filtering generation dc voltage value is the circuit voltage source of Vdw1 voltage stabilizing value.
＜3〉the unidirectional pulsating voltage of .310Vp-p/100Hz positive polarity since the clamper of diode D5 and voltage stabilizing didoe DW1 on resistance R 2, produces a 100Hz, and synchronized, amplitude is the negative spike of Vdw1+0.7V.2 pin of this negative pulse base chip when capacitor C 1 is coupled to the 7555MOS type, the logic function of base chip during according to the 7555MOS type, when V2≤1/3Vdw1, V3=Vcc=Vdw1, (V2, V3 are respectively 2 pin of basic chip this moment, the voltage of 3 pin), this moment should time base chip 3 pin be similar to 0, π, 2 π ... the output high level, the starting point of the saturation conduction of control field effect transistor Q3.
＜4〉constitute the circuit of closing field effect transistor Q3 with capacitor C 2, resistance R 4, adjustable resistance W, adjustable resistance WH behind 6 pin of .7555MOS type time base chip, the 7 pin short circuits: when capacitor C 2 two terminal voltages are 0, the dc supply voltage vcc (=Vdw1) charge to capacitor C 2 by adjustable resistance W, adjustable resistance WH, resistance R 4, the voltage V6 of 6 pin of time base chip also rises thereupon, when V6 reaches 2/3Vdw1, V3=0, the grid voltage that makes field effect transistor Q3 is 0, realizes the shutoff of field effect transistor Q3.
＜5 〉. we establish the time-delay that V6 reaches 2/3Vdw1 and are γ constantly.The time location of γ should be regulated and control at 0＜γ＜π and π＜γ＜2 π, concrete cooperate resistance R 0 as long as regulate adjustable resistance W() can realize: as γ in the zone of 0-π the closer to 0 °, and in the zone of π to 2 π the closer to 180 °, then the saturation conduction angle of triode Q1 is more little, makes illumination dark more; Otherwise it is bright more.Before being, the delay time of 0-γ light fixture lighted the time the identical no longer detailed description with preceding half cycle of second half in the half cycle civil power.
＜6 〉. in the use, bearing power exceeds the design power scope, when the overpower overcurrent occurring, the pressure drop at resistance R 9 two ends: VR9=I (load) * R9 〉=0.7V, this voltage is after the instantaneous time-delay of resistance R 8 and capacitor C D2, trigger controllable silicon SCR 3 conductings and lock conducting state, zero setting end 4 pin of base chip were 0 when this state made the 7555MOS type, then 3 pin are output as 0, the positive pole of diode D6 also drops to about 0.65V simultaneously, double insurance guarantees that the grid of field effect transistor Q3 is the shutoff level, and cuts off the power supply to load.Because 4 pin of base chip are 0V during the 7555MOS type, for the low-voltage dc power supply of control circuit through LED 3 and resistance R 5 to ground, produce electric current: Iled3=(VDW1-1.4V)/R5 (mA), light LED 3, make highlight indication as overload overcurrent alarm indication.Have only and removed over current fault, above circuit just recovers normal operation automatically.
＜7 〉. in the control circuit of two-wire system mode, the design of reliable and stable low-voltage direct working voltage source is the key that guarantees that can entire circuit operate as normal.This voltage source need be at civil power in the fluctuation range of 170VAC to 255VAC and still can operate as normal under the situation of light modulation voltage ratio from 15% to 92% of load two terminal voltages and add nominal line voltage.The operating state of two-wire system mode is because dimmer is pure the series connection with load, so when load obtains high voltage, the low residual voltage of dimmer two ends can't provide the current value that is sufficient to DC voltage-stabilizing working voltage source operate as normal, cause magnitude of voltage drop for control circuit, produce a series of degradation effects, even burn field effect transistor Q3.Present embodiment from how under the extremely low voltage condition of dimmer two ends supply enough keep the direct voltage source operating current and owing to solve aspect the other reasons cause the decline of direct voltage source operating voltage to worsen two:
A. the step-down current-limiting resistance that direct-current working volts source running current is provided is divided into 14 2 of resistance R 13 and resistance R, the voltage identification circuit that adopts resistance R 0, resistance R W, resistance R 1, voltage stabilizing didoe DW3, voltage stabilizing didoe DW4, controllable silicon SCR 1 and controllable silicon SCR 2 to form simultaneously, its function is: when the voltage of dimmer two ends is worth greater than certain, controllable silicon SCR 2 is in cut-off state, resistance R 13 and resistance R 14 series connection access power supplies (at this moment: the voltage/R13+R14 of supply current=dimmer two ends, less).When the voltage of dimmer two ends was worth less than certain, controllable silicon SCR 2 was in conducting state, and resistance R 14 is by short circuit, and only resistance R 13 series connection insert power supply (at this moment: the voltage/R13 of supply current=dimmer two ends, bigger).As long as select suitable parameters can accomplish when extremely low dimmer two terminal voltages, enough electric currents also can be arranged for low-voltage direct voltage-stabilizing working power supply operate as normal, wherein LED 1, LED 2 utilize this electric current double as indication to use.
B. voltage stabilizing didoe DW2, resistance R 10, resistance R 11, resistance R 12, triode Q1 and triode Q2 form the saturated grid voltage circuit of safety that control is not less than the field effect transistor Q3 of a certain numerical value.When certain reason makes the undesired decline of voltage-stabilizing working power supply voltage Vdw1 cause the grid voltage of field effect transistor Q3 to be lower than this value, triode Q1 ends, triode Q2 saturation conduction, force the grid of field effect transistor Q3 to put 0 current potential and turn-off field effect transistor Q3, play the safe self-locking effect.
＜8 〉. the real voltage waveform in load: field effect transistor Q3 is not 0 and π place saturation conduction, but saturation conduction is again arranged after the very little α phase lag, and turn-off field effect transistor Q3 at the γ phase point, the γ point must lag behind the α point and just can make the circuit operate as normal less than the π point simultaneously, and available adjustable resistance W and resistance R 0 are regulated.
＜9 〉. the anti-unexpected unusual short-circuit protection of fuse F and fuse FT is used.Fuse FT is Thermal Cutoffs or resettable fuse, for issuable high temperature under the fortuitous event and big electric current play safety effect.Piezo-resistance RV is the damage that prevents that other kinds instantaneous high pressure that lightning induction high pressure and electrical network seal in from may cause dimmer.
Claims (8)
1. a two-wire system control is closed and is had no progeny along the phase angle dimmer, it is characterized in that comprising full-bridge rectification module (1), unsteady flow supply module (2), unsteady flow power supply sampling module (3), low-voltage direct voltage-stabilizing working power supply module (4), turn-off behind the phase angle along adjustable module (5), conduction phase angle setting module (6), time-base circuit (7) and field effect transistor Q3, an input of full-bridge rectification module (1) links to each other with live wire, another input of full-bridge rectification module (2) links to each other with load (9), load (9) links to each other with zero line again, the output of full-bridge rectification module (1) and unsteady flow power supply sampling module (3), field effect transistor Q3 parallel connection, the input of unsteady flow power supply sampling module (3) and an input of unsteady flow supply module (2) link to each other, the output of unsteady flow power supply sampling module (3) and another input of unsteady flow supply module (2) link to each other, described low-voltage direct voltage-stabilizing working power supply module (4), turn-off behind the phase angle along adjustable module (5), conduction phase angle setting module (6) all is connected in parallel between the negative sense output of the output of unsteady flow supply module (2) and full-bridge rectification module (1), turn-off behind the phase angle output along adjustable module (5), the output of conduction phase angle setting module (6) links to each other with the input of described time-base circuit (7) respectively, and the output of time-base circuit (7) and the grid of described field effect transistor Q3 link to each other.
2. two-wire system control according to claim 1 is closed and is had no progeny along the phase angle dimmer, the input that it is characterized in that unusual identification of the output of described unsteady flow supply module (2) and working power and automatic closing module (10) links to each other, and working power is discerned unusually and the output of automatic closing module (10) and the grid of described field effect transistor Q3 link to each other.
3. two-wire system control according to claim 1 and 2 is closed and is had no progeny along the phase angle dimmer, it is characterized in that being connected with overload sampling module (11) between the source electrode of the negative sense output of described full-bridge rectification module (1) and field effect transistor Q3, the output of described overload sampling module (11) links to each other with the input of the automatic closing module of overload (12), the output of described unsteady flow supply module (2) links to each other with alarm indicating module (13), alarm indicating module (13) is connected with time-base circuit (7) again, and the output of the automatic closing module of described overload (12) also links to each other with alarm indicating module (13).
4. two-wire system control according to claim 1 and 2 is closed and is had no progeny along the phase angle dimmer, it is characterized in that described unsteady flow power supply sampling module (3) comprises resistance R 0 and the adjustable resistance RW that is in series, described unsteady flow supply module (2) comprises resistance R 1, resistance R 13, resistance R 14, voltage stabilizing didoe DW3, voltage stabilizing didoe DW4, LED 1, LED 2 and controllable silicon SCR 1, controllable silicon SCR 2, resistance R 14 and controllable silicon SCR 2 parallel connections, resistance R 13 and LED 1, the series circuit that LED 2 is linked to be links to each other with this parallel circuits again, resistance R 1 and controllable silicon SCR 1, voltage stabilizing didoe DW4 is linked to be series circuit, the positive pole of voltage stabilizing didoe DW3 extremely links to each other with the control of controllable silicon SCR 1, the negative pole of voltage stabilizing didoe DW3 is linked the also contact of resistance R 0 and adjustable resistance RW, and the control utmost point of controllable silicon SCR 2 is linked the also contact of resistance R 1 and controllable silicon SCR 1.
5. two-wire system control according to claim 1 and 2 is closed and is had no progeny along the phase angle dimmer, it is characterized in that comprising adjustable resistance W and the adjustable resistance WH that is linked to be parallel circuits along adjustable module (5) behind the described shutoff phase angle, described conduction phase angle setting module (6) comprises resistance R 2 and the diode D5 that is linked to be series circuit, the negative pole of diode D5 links to each other with the movable end of adjustable resistance W, the positive pole of diode D5 is through capacitor C 1, resistance R 3 also links to each other with the movable end of adjustable resistance W, one end of the parallel circuits of adjustable resistance W and adjustable resistance WH links to each other with the negative pole of diode D5, and the other end of this parallel circuits links to each other with described time-base circuit (7).
6. two-wire system control according to claim 2 is closed and is had no progeny along the phase angle dimmer, it is characterized in that unusual identification of described working power and automatic closing module (10) comprise triode Q1, triode Q2, resistance R 10, resistance R 11, resistance R 12 and voltage stabilizing didoe DW2, resistance R 10 connects the collector electrode of triode Q1, the base stage of triode Q1 links to each other through the positive pole of resistance R 11 with voltage stabilizing didoe DW2, the negative pole of voltage stabilizing didoe DW2 links to each other with described time-base circuit (7), the positive pole of voltage stabilizing didoe DW2 is again through the emitter of resistance R 12 and triode Q1, the emitter of triode Q2 also connects back ground connection, the base stage of triode Q2 links to each other with the collector electrode of triode Q1, and the collector electrode of triode Q2 links to each other with the grid of described field effect transistor Q3.
7. two-wire system control according to claim 3 is closed and is had no progeny along the phase angle dimmer, it is characterized in that described overload sampling module (11) comprises resistance R 8, resistance R 9 and capacitor C D2, the also contact of resistance R 8 and resistance R 9 links to each other with the source electrode of described field effect transistor Q3 again, the two ends of capacitor C D2 respectively with the other end of resistance R 8, the other end of resistance R 9 links to each other, the automatic closing module of described overload (12) comprises resistance R 6, capacitor C 5, diode D6 and controllable silicon SCR 3, described alarm indicating module (13) comprises resistance R 5 and the LED 3 that is in series, one end of resistance R 6 with after the positive pole of diode D6 links to each other again the grid through resistance R 7 and described field effect transistor Q3 link to each other, the other end of resistance R 6 links to each other with described time-base circuit (7), the negative pole of diode D6 links to each other with described time-base circuit (7) with resistance R 5 and after connecing again, the positive pole of controllable silicon SCR 3 links to each other with the negative pole of diode D6, the minus earth of controllable silicon SCR 3, the control utmost point of controllable silicon SCR 3 are linked the also contact of resistance R 8 and capacitor C D2.
8. two-wire system control according to claim 1 and 2 is closed and is had no progeny along the phase angle dimmer, base chip when it is characterized in that described time-base circuit (7) employing 7555MOS type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200038890U CN201986220U (en) | 2011-01-07 | 2011-01-07 | Two-wire system control turn-off back porch phase angle light modulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200038890U CN201986220U (en) | 2011-01-07 | 2011-01-07 | Two-wire system control turn-off back porch phase angle light modulator |
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| Publication Number | Publication Date |
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| CN201986220U true CN201986220U (en) | 2011-09-21 |
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| CN2011200038890U Expired - Fee Related CN201986220U (en) | 2011-01-07 | 2011-01-07 | Two-wire system control turn-off back porch phase angle light modulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170727A1 (en) * | 2012-05-17 | 2013-11-21 | Yung Pun Cheng | Trailing-edge-phase-controlled light modulating circuit |
-
2011
- 2011-01-07 CN CN2011200038890U patent/CN201986220U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170727A1 (en) * | 2012-05-17 | 2013-11-21 | Yung Pun Cheng | Trailing-edge-phase-controlled light modulating circuit |
| US9326353B2 (en) | 2012-05-17 | 2016-04-26 | Yung Pun Cheng | Trailing-edge-phase-controlled light modulating circuit |
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