CN206481472U - LED thyristor regulating optical circuits - Google Patents
LED thyristor regulating optical circuits Download PDFInfo
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- CN206481472U CN206481472U CN201621359438.XU CN201621359438U CN206481472U CN 206481472 U CN206481472 U CN 206481472U CN 201621359438 U CN201621359438 U CN 201621359438U CN 206481472 U CN206481472 U CN 206481472U
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Abstract
The utility model is related to a kind of LED thyristor regulatings optical circuit, including：Controllable silicon dimmer, EMI filter circuit, rectifier bridge, leadage circuit, electric power management circuit and transformer.The output end of controllable silicon dimmer connects the first input end of EMI filter circuit.EMI filter circuit connects rectifier bridge；Rectifier bridge connects leadage circuit, and two voltage input ends of leadage circuit connect first end and the second end of the armature winding of transformer respectively, and the second output end of rectifier bridge is used to be grounded；The input of electric power management circuit connects the first end of armature winding, and the power end of electric power management circuit connects the first end of the assists winding of transformer, and the second end of the assists winding of transformer is used to be grounded；The secondary windings of transformer is used to connect LED/light source.The LED thyristor regulating optical circuits can be used in high-power LED controllable silicon light modulation lighting apparatus, can both ensure the luminous efficiency of LED illumination, and the lighting apparatus that controllable silicon light modulation can be met again does not flash in low-light level.
Description
Technical field
The utility model is related to LED circuit technical field, more particularly to a kind of LED thyristor regulatings optical circuit.
Background technology
As forth generation lighting source-LED, there are specular removal, long-life, free of contamination feature.As country promulgates bar
The propulsion for the plan for forbidding producing and using incandescent lamp is made, the market penetration rate of LED illumination is gradually stepped up.
With advances in technology, LED illumination product gradually moves towards intelligent, realizes that secondary energy-saving provides bar for light fixture
Part, the LED lamp application with dimming function is more and more extensive.Market LED lamp dimming mode has three kinds, is respectively：Simulation
Light modulation, PWM light modulations, controllable silicon light modulation.Wherein, thyristor regulating optical circuit is simple, easy to operate, the light modulation of LED alternative lamps is used, no
Need to change original light adjusting circuit, so dimming mode is generally had an optimistic view of.
Tradition LED thyristor regulating optical circuits, are connected after controllable silicon dimmer on the market, during controlled silicon conducting, AC civil power (works
Frequency alternating current) voltage almost moment is applied to the LC input filters of LED power supply.Being applied to the voltage step of inductance can lead
Cause vibration.If light modulator electric current maintains electric current in the duration of oscillation less than controllable silicon, controllable silicon will stop turning on.Control machines
Circuit is charged, and controllable silicon is then turned on again.This irregular multiple controllable silicon is restarted, and LED drivings can be made to produce message
Noise or LED flickers.
The problem of message noise or LED caused by shut-off controllable silicon flash in order to avoid false triggering or too early, the EMI of input
Filter inductance and electric capacity must be small as much as possible, so contribute to the such unnecessary vibration of reduction.When depth is dimmed,
In order to maintain the conducting of controllable silicon to maintain electric current, resistance can be connected in loop, at thyristor regulating to maximum dimmer position, resistance
On loss it is maximum, therefore the power-efficient of this framework is relatively low, especially the dimmer application in high-power LED lighting apparatus
When, the caloric value of resistance is bigger, and this substantially reduces the reliability of LED power.
Utility model content
Based on this, it is necessary to for high-power LED lighting apparatus power-efficient it is low the problem of there is provided one kind improve electricity
The thyristor regulating optical circuit of the efficiency in source.It can be used in high-power LED controllable silicon light modulation lighting apparatus, can both ensure
The luminous efficiency of LED illumination, the lighting apparatus that controllable silicon light modulation can be met again does not flash in low-light level.
A kind of LED thyristor regulatings optical circuit, including：Controllable silicon dimmer, EMI filter circuit, rectifier bridge, leadage circuit,
Electric power management circuit and transformer；
The input of the controllable silicon dimmer is used for the live wire L for connecting civil power AC, the output of the controllable silicon dimmer
The first input end of the end connection EMI filter circuit；
Second input of the EMI filter circuit is used for the zero line N for connecting the civil power AC, the EMI filter circuit
The first output end connect the first input end of the rectifier bridge, the second output end connection rectifier bridge of the EMI filter circuit
The second input；
First output end of the rectifier bridge connects the output end of the leadage circuit, two voltages of the leadage circuit
Input connects first end and the second end of the armature winding of the transformer respectively, and the second output end of the rectifier bridge is used for
Ground connection；
The input of the electric power management circuit connects the first end of the armature winding, the electricity of the electric power management circuit
Source connects the first end of the assists winding of the transformer, and the second end of the assists winding of the transformer is used to be grounded；
The secondary windings of the transformer is used to connect LED/light source.
In one of the embodiments, the leadage circuit includes release module, emitter following module and partial pressure current limliting mould
Block, wherein, the module of releasing connects the first output end and the emitter following module of the rectifier bridge, the emitter-base bandgap grading respectively
Follow module to connect the partial pressure current limliting module, the partial pressure current limliting module be also respectively connected with the first end of the armature winding with
Second end.
In one of the embodiments, the module of releasing includes first voltage input, second voltage input, MOS
The first input end of the resistance R1 and resistance R2, the metal-oxide-semiconductor Q2 of pipe Q2 and parallel connection the drain electrode connection rectifier bridge, it is described
Metal-oxide-semiconductor Q2 source electrode connects the second voltage input, and the grid of the metal-oxide-semiconductor Q2 connects the first voltage input,
Resistance R1 and resistance R2 two ends in parallel connects drain electrode and the source electrode of the metal-oxide-semiconductor Q2 of the metal-oxide-semiconductor Q2, described second respectively
Voltage input end connects the first end of the armature winding；
The emitter following module includes resistance R23, triode Q4, electric capacity C12 and resistance R3, the hair of the triode Q4
Emitter-base bandgap grading connects the grid of the metal-oxide-semiconductor Q2, and the colelctor electrode of the triode Q4 connects the source electrode of the metal-oxide-semiconductor Q2, three pole
Pipe Q4 base stage connects the partial pressure current limliting module, and the two ends of the resistance R23 connect the emitter stage of the triode Q4 respectively
With the base stage of the triode Q4, the two ends of the electric capacity C12 connect the emitter stage and the triode of the triode Q respectively
Q4 colelctor electrode, the resistance R3 is in parallel with the electric capacity C12；
The division module includes tertiary voltage input, the 4th voltage input end, resistance R4, resistance R31, voltage-stabiliser tube Z2
With voltage-stabiliser tube Z3, the anode of the voltage-stabiliser tube 3 connects the second voltage input, and the negative electrode of the voltage-stabiliser tube Z3 is connected respectively
The base stage of the triode Q4 and the tertiary voltage input, it is defeated that the two ends of the resistance R4 connect the tertiary voltage respectively
Enter end and the second voltage input, the anode of the voltage-stabiliser tube Z2 is defeated by the resistance R31 connections tertiary voltage
Enter end, the negative electrode of the voltage-stabiliser tube Z2 connects the 4th voltage input end, and the 4th voltage input end connects the armature winding
The second end.
In one of the embodiments, the LED thyristor regulatings optical circuit also includes RCD absorbing circuits, and the RCD absorbs
Circuit includes the 5th voltage input end, resistance R12, resistance R19, electric capacity C4 and diode D1, and one end of the electric capacity C4 is connected
The first end of the armature winding, the other end of the electric capacity C4 connects the negative electrode and the 4th electricity of the diode D1 respectively
Input is pressed, the anode of the diode D1 connects the second end of the armature winding by the 5th voltage input end；Institute
State resistance R12 and the resistance R19 is in parallel with the electric capacity C4 respectively.
In one of the embodiments, the LED thyristor regulatings optical circuit also includes RC antihunt circuits, the RC dampings electricity
Road includes the resistance R9 and electric capacity C1 of series connection, and the first end of the armature winding passes through the one of the resistance R9 connections electric capacity C1
End, the other end of the electric capacity C1 is used to be grounded.
In one of the embodiments, the LED thyristor regulatings optical circuit also includes " π " shape filter circuit, " π " shape
Filter circuit includes electric capacity C2, electric capacity C3 and inductance L3, and the two ends of the inductance L3 connect one of the leadage circuit respectively
The first end of voltage input end and the armature winding, the two ends of the inductance L3 are also respectively used to by the electric capacity C2 and institute
State electric capacity C3 ground connection.
In one of the embodiments, the LED thyristor regulatings optical circuit also includes diode D3, the diode D3's
Anode connects the voltage input end that the leadage circuit is connected with the inductance L3, and the negative electrode of the diode D3 passes through
The first end of the inductance L3 connections armature winding.
In one of the embodiments, the LED thyristor regulatings optical circuit also includes output rectification circuit, and the output is whole
Current circuit includes diode D6 and the electric capacity C13 of parallel connection and resistance R27, the diode D6 anode connect the transformer
The first end of secondary windings, the negative electrode of the diode D6 is used for the positive pole for connecting LED/light source；
The electric capacity C13 in parallel and resistance R27 two ends connect respectively the diode D6 negative electrode and it is described it is secondary around
Second end of group, the second end of the secondary windings is additionally operable to connect the negative pole of the LED/light source.
In one of the embodiments, the electric power management circuit includes power management chip U1, VCC mu balanced circuit and opened
Control circuit is closed, the input pin of the power management chip U1 connects the first end of the armature winding, the power management
Chip U1 output pin and the power management chip U1 current feedback pin connect the ON-OFF control circuit, institute respectively
The power pins for stating power management chip U1 connect the first end of the assists winding by the VCC mu balanced circuits, described auxiliary
The second end of winding is helped to be used to be grounded, the second end of the armature winding is also grounded by the ON-OFF control circuit.
In one of the embodiments, the electric power management circuit also includes thermal-shutdown circuit and fast start circuit,
The thermal-shutdown circuit connects the current feedback pin and the VCC mu balanced circuits of the power management chip U1, institute respectively
State fast start circuit and connect the input pin of the power management chip U1 and the first end of the armature winding respectively.
Above-mentioned LED thyristor regulatings optical circuit, civil power AC is after controllable silicon dimmer for input, then by EMI filter circuit,
EMI filter circuit is for suppressing conduction during power work and radiation interference.By rectifier bridge, electric current flows through leadage circuit, so
Afterwards by RC antihunt circuits, RC antihunt circuit purposes are to improve the conducting electric current and electromagnetic interface filter part during controlled silicon conducting
Shake, for the electric current for the concussion that decays so that power stability, do not flash.Again by transformer, electric power management circuit, from
And regulation output current is reached, realize light modulation.
Brief description of the drawings
Fig. 1 be one embodiment in LED thyristor regulating optical circuits structural representation；
Fig. 2 be one embodiment in leadage circuit structural representation；
Fig. 3 be one embodiment in leadage circuit circuit diagram；
Fig. 4 is RC antihunt circuits in one embodiment, " π " shape filter circuit and diode D3 circuit diagram；
Fig. 5 be one embodiment in RCD absorbing circuits circuit diagram；
Fig. 6 be one embodiment in output rectification circuit circuit diagram；
Fig. 7 be one embodiment in electric power management circuit circuit diagram；
Fig. 8 be one embodiment in thermal-shutdown circuit circuit diagram；
Fig. 9 be one embodiment in LED thyristor regulating optical circuits circuit diagram；
Figure 10 is the schematic diagram of the voltage Vin of the input of controllable silicon regulator in one embodiment waveform；
Figure 11 is the oscillogram of the voltage in leadage circuit in one embodiment；
Figure 12 is the schematic diagram of the voltage Vin waveforms of the input of controllable silicon regulator in another embodiment；
Figure 13 is the comparison diagram of Vab waveforms and Vgb waveforms in another embodiment.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.Elaborate many details in order to abundant in the following description
Understand the utility model.But the utility model can be implemented with being much different from other manner described here, this area
Technical staff can do similar improvement in the case of without prejudice to the utility model intension, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise specifically defined.
For example, a kind of LED thyristor regulatings optical circuit, it includes：Controllable silicon dimmer, EMI filter circuit, rectifier bridge, let out
Discharge road, electric power management circuit and transformer；The input of the controllable silicon dimmer is used for the live wire L for connecting civil power AC, institute
The output end for stating controllable silicon dimmer connects the first input end of the EMI filter circuit；The second of the EMI filter circuit is defeated
Enter the zero line N that end is used to connect the civil power AC, the first output end of the EMI filter circuit connects the first of the rectifier bridge
Input, the second output end of the EMI filter circuit connects the second input of rectifier bridge；First output of the rectifier bridge
The output end of the end connection leadage circuit, two voltage input ends of the leadage circuit connect the first of the transformer respectively
The first end of level winding and the second end, the second output end of the rectifier bridge are used to be grounded；The input of the electric power management circuit
The first end of the end connection armature winding, the power end of the electric power management circuit connects the assists winding of the transformer
First end, the second end of the assists winding of the transformer is used to be grounded；The secondary windings of the transformer is used to connect LED light
Source.
As shown in figure 1, a kind of LED thyristor regulatings optical circuit 10, including：Controllable silicon dimmer 110, EMI filter circuit
120th, rectifier bridge BD1, leadage circuit 130, electric power management circuit 140 and transformer T1.The input of controllable silicon dimmer 110 is used
In connection civil power AC live wire L, the output end of controllable silicon dimmer 110 connects the first input end of EMI filter circuit 120.EMI
Second input of filter circuit 120 is used for the zero line N for connecting civil power AC, and the first output end connection of EMI filter circuit 120 is whole
Flow bridge BD1 first input end, the second output end connection rectifier bridge BD1 of EMI filter circuit 120 the second input.Rectification
Bridge BD1 the first output end connects the output end of leadage circuit 130, and two voltage input ends of the leadage circuit are connected respectively
The first end of transformer T1 armature winding and the second end, rectifier bridge BD1 the second output end are used to be grounded.Electric power management circuit
Input connect the first end of the armature winding, the power end connection transformer T1 of electric power management circuit 140 assists winding
First end, the second end of the assists winding of the transformer is used to be grounded.Transformer T1 secondary windings is used to connect LED light
Source.
Above-mentioned LED thyristor regulatings optical circuit, civil power AC is after controllable silicon dimmer, then by EMI filter circuit, EMI
Filter circuit 120 is for suppressing conduction during power work and radiation interference.By rectifier bridge BD1, electric current flows through leadage circuit
130, conducting electric current and decay electromagnetic interface filter part when leadage circuit 130 is used to improve controlled silicon conducting shake produced shake
Swing electric current so that power stability, do not flash.Pass through transformer T1 and electric power management circuit 140 again, so that output current is adjusted,
Realize light modulation.
As depicted in figs. 1 and 2, in a wherein embodiment, leadage circuit 130 includes release module 131, emitter following mould
Block 132 and partial pressure current limliting module 133, wherein, module of releasing 131 connect respectively rectifier bridge BD1 the first output end and emitter-base bandgap grading with
With module 132, the connection partial pressure current limliting of emitter following module 132 module 133, partial pressure current limliting module 133 is also respectively connected with the primary
The first end of winding and the second end.
Incorporated by reference to Fig. 1, Fig. 2 and Fig. 3, in a wherein embodiment, module of releasing 131 include first voltage input Vg,
The first of the resistance R1 and resistance R2 of second voltage input, metal-oxide-semiconductor Q2 and parallel connection, metal-oxide-semiconductor Q2 drain electrode connection rectifier bridge BD1
Input, metal-oxide-semiconductor Q2 source electrode connection second voltage input, metal-oxide-semiconductor Q2 grid connection first voltage input Vg, parallel connection
Resistance R1 and resistance R2 two ends connect metal-oxide-semiconductor Q2 drain electrode and metal-oxide-semiconductor Q2 source electrode, the Vb connections of second voltage input respectively
The first end of transformer T1 armature winding.
Emitter following module includes resistance R23, triode Q4, electric capacity C12 and resistance R3, and triode Q4 emitter stage is connected
Metal-oxide-semiconductor Q2 grid, triode Q4 colelctor electrode connection metal-oxide-semiconductor Q2 source electrode, triode Q4 base stage connection partial pressure current limliting mould
Block 133, resistance R23 two ends difference connecting triode Q4 emitter stage and triode Q4 base stage, electric capacity C12 two ends difference
Connecting triode Q4 emitter stage and triode Q4 colelctor electrode, resistance R3 are in parallel with electric capacity C12.Emitter following module is used to lead to
Cross triode Q4 and electric capacity C12 and reduce interference of the input voltage signal Vcb to output signal Vgb so that Vgb voltage is more steady
Fixed, dynamic response is more preferable.
Division module includes tertiary voltage input Vc, the 4th voltage input end Va, resistance R4, resistance R31, voltage-stabiliser tube Z2
With voltage-stabiliser tube Z3, voltage-stabiliser tube Z3 anode connection second voltage input Vc, voltage-stabiliser tube Z3 negative electrode difference connecting triode Q4
Base stage and tertiary voltage input Vc, resistance R4 two ends connect tertiary voltage input Vc and second voltage input respectively
It is defeated that Vb, voltage-stabiliser tube Z2 anode connect the 4th voltage by resistance R31 connection tertiary voltages input Vc, voltage-stabiliser tube Z2 negative electrode
Enter and hold Va, the 4th voltage input end Va connects the second end of the armature winding.Division module is used for the 4th voltage input end Va
Voltage carry out partial pressure, after current limliting, obtain a suitable voltage Vcb.Vcb voltage goes out by resistance R3 and R23 partial pressure again
Carry out grid voltage Vgb.
It may be mentioned that utility model people embodies operation principle by capturing a few thing waveform.It is controllable when input
Silicon is at maximum dimmer position, and input terminal voltage Vin waveform is as shown in Figure 10, now between metal-oxide-semiconductor Q2 drain electrode and source electrode
Voltage Vds after diode D1 rectifications, obtain voltage Vab as shown in figure 11.Voltage Vab passes through voltage-stabiliser tube Z2 and resistance
Z3 partial pressure, and resistance R4 and resistance R31 current limliting, obtain voltage Vcb；Vcb voltage signal, then by emitter following electricity
Road, this circuit reduces the influence that input voltage signal Vcb is disturbed output signal Vgb so that Vgb voltage is more stable, moves
State response is more preferable.As can be seen that input voltage cuts phase angle change and Vab, Vgb synchronously become from Figure 10 and Figure 11 oscillogram
Change.From the point of view of Vgb waveforms now, the metal-oxide-semiconductor Q2 mosts of the time are to turn on, therefore the electric current Iin in circuit loop, big portion
Shunting is through metal-oxide-semiconductor Q2, and only few one part of current flows through resistance R1 and resistance R2.So now LED illumination device is controllable
When silicon maximum dimmer position, the efficiency of power supply was both improved, and dimming effect can be met again.
Equally, controllable silicon dimmer is when minimum position, and now input terminal voltage Vin waveform is as shown in figure 11.
Figure 12 is Vab and Vgb comparison of wave shape figure, i.e. Vds voltages obtain Vab and Vgb as shown in figure 12 after over commutation, partial pressure.
From the point of view of Vgb waveform, now the metal-oxide-semiconductor Q2 turn-off times are most long, therefore when minimum light modulation, the input current in loop
Iin, extreme portions flow through resistance R1 and resistance R2.It can be seen from Figure 11 and Figure 12, cut angle and Vab, Vgb synchronously change.This
Sample, when minimum light modulation, increases resistance R1 and resistance R2 loss, maintains controlled silicon conducting electric current, LED illumination is most
When small light modulation, also do not flash and abnormal sound.
For example, changing the cut angle of AC-input voltage, voltage Vab conducting when light fixture is linked into controllable silicon dimmer
Angle meeting synchronous change because of the change of input voltage cut angle, such metal-oxide-semiconductor Q2 gate waveform Vgb is with input voltage cut
The transformation at angle and change, metal-oxide-semiconductor Q2 switch-closed time length cuts phase angle change with controllable silicon light modulation input voltage.Controllable silicon
The cut angle for changing input voltage is bigger, and the time of grid Vgb high level is shorter, and the time of metal-oxide-semiconductor Q2 shut-off gets over
Long, the electric current in loop flows through resistance R1 and resistance R2 loss is bigger, and the maintenance electric current of controllable silicon becomes stable, light modulation effect
Fruit becomes more preferable；The cut angle that controllable silicon changes input voltage is smaller, and metal-oxide-semiconductor Q2 grids are longer for the time of high level, MOS
The time of pipe Q2 shut-off is shorter, the electric current in loop flow through resistance R1 and resistance R2 loss just it is smaller, and metal-oxide-semiconductor Q2 turn on
Resistance very little, such power-efficient is improved, and in turn ensure that dimming effect.
Wherein, voltage Vab is the pressure difference between the 4th voltage input end and second voltage input, i.e. Vab=Va-Vb；
Similarly, Vgb=Vg-Vb.
As shown in figure 4, in a wherein embodiment, LED thyristor regulatings optical circuit also includes RC antihunt circuits, RC damping electricity
Road includes the resistance R9 and electric capacity C1 of series connection, and the first end of armature winding passes through resistance R9 connection electric capacity C1 one end, electric capacity C1
The other end be used for be grounded.RC antihunt circuits decayed controlled silicon conducting when conducting electric current and electromagnetic interface filter part occur shake
The electric current of concussion produced by swinging so that the power stability of controllable silicon dimmer 110, it is to avoid LED flashes.
In a wherein embodiment, LED thyristor regulatings optical circuit also includes " π " shape filter circuit, " π " shape filter circuit bag
Electric capacity C2, electric capacity C3 and inductance L3 are included, inductance L3 two ends connect the voltage input end and primary of leadage circuit 130 respectively
The first end of winding, inductance L3 two ends are also respectively used to by electric capacity C2 and electric capacity C3 ground connection." π " shape filter circuit is used to increase
The effect of the decay concussion electric current of strong RC antihunt circuits.For example, inductance L3 two ends connect the first electricity of leadage circuit 130 respectively
Press the first end of input and armature winding；Or, inductance L3 two ends connect the second voltage input of leadage circuit 130 respectively
End and the first end of armature winding.
In a wherein embodiment, LED thyristor regulatings optical circuit also includes diode D3, and diode D3 anode connection is let out
Discharge road, the first end that diode D3 negative electrode passes through inductance L3 connection armature windings.For example, the LED thyristor regulatings photoelectricity
The road also anode including diode D3, the diode D3 connects the electricity that the leadage circuit is connected with the inductance L3
Press input, the first end that the negative electrode of the diode D3 passes through the inductance L3 connections armature winding.For example, described two
Pole pipe D3 is arranged at the voltage input end and the electricity that the leadage circuit is connected with the first end of the armature winding
Between sense L3, and the anode of the diode D3 connects the control source that the leadage circuit is connected with the inductance L3
End, the first end that the negative electrode of the diode D3 passes through the inductance L3 connections armature winding.For example, the diode D3
It is arranged between the first voltage input of the leadage circuit and the inductance L3, and the anode connection institute of the diode D3
The first voltage input that leadage circuit is connected with the inductance L3 is stated, the negative electrode of the diode D3 passes through the inductance L3
Connect the first end of the armature winding.And for example, the diode D3 is arranged at the second voltage input of the leadage circuit
And between the inductance L3, and the anode of the diode D3 connects the leadage circuit is connected with the inductance L3 second
Voltage input end, the first end that the negative electrode of the diode D3 passes through the inductance L3 connections armature winding.
As shown in figure 5, in a wherein embodiment, LED thyristor regulatings optical circuit 10 also includes RCD absorbing circuits 170,
RCD absorbing circuits 170 include the 5th voltage input end Vd, resistance R12, resistance R19, electric capacity C4 and diode D1, electric capacity C4's
One end connects the first end of armature winding, and the electric capacity C4 other end connects diode D1 negative electrode and the 4th control source respectively
End, the second end that diode D1 anode passes through the 5th voltage input end Vd connection armature windings.R19 points of resistance R12 and resistance
It is not in parallel with electric capacity C4.5th voltage input end Vd voltage passes through diode D1 rectifications, electric capacity C4, resistance R12 and resistance R19
After filtering, become smooth half-wave voltage Vab.
As shown in fig. 6, in a wherein embodiment, LED thyristor regulatings optical circuit 10 also includes output rectification circuit 180,
Output rectification circuit 180 includes the electric capacity C13 and resistance R27 of diode D6 and parallel connection, diode D6 anode connection transformer
The first end of T1 secondary windings, diode D6 negative electrode is used for the positive pole for connecting LED/light source 210.Electric capacity C13 and electricity in parallel
Resistance R27 two ends connect diode D6 negative electrode and the second end of secondary windings respectively, and the second end of secondary windings is additionally operable to connection
The negative pole of LED/light source 210.The C13 and diode D6 of output rectification circuit carry out rectification to circuit, for being supplied to LED/light source 210
Electricity.
As shown in figures 7 and 9, in a wherein embodiment, electric power management circuit 140 includes power management chip U1, VCC
Mu balanced circuit 141 and ON-OFF control circuit 142, power management chip U1 input pin connect the first end of armature winding, electricity
Source control chip U1 output pin and power management chip U1 current feedback pin difference connecting valve control circuit 142,
Power management chip U1 power pins connect the first end of assists winding, the second of assists winding by VCC mu balanced circuits 141
Hold for being grounded, the second end of armature winding is also grounded by ON-OFF control circuit.
As shown in Figure 8 and Figure 9, in a wherein embodiment, electric power management circuit 140 also includes thermal-shutdown circuit 144
And fast start circuit 143, the current feedback pin and VCC that thermal-shutdown circuit 144 connects power management chip U1 respectively be steady
Volt circuit 141, fast start circuit 143 connects power management chip U1 input pin and the first end of armature winding respectively.
The specific attachment structure of thermal-shutdown circuit 144 is as shown in Figure 9.
Each technical characteristic of above example can be combined arbitrarily, to make description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield, is all considered to be the scope of this specification record.
Above example only expresses several embodiments of the present utility model, and it describes more specific and detailed, but simultaneously
Therefore the limitation to utility model patent scope can not be interpreted as.It should be pointed out that for the ordinary skill people of this area
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With new protection domain.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of LED thyristor regulatings optical circuit, it is characterised in that including：Controllable silicon dimmer, EMI filter circuit, rectifier bridge,
Leadage circuit, electric power management circuit and transformer；
The input of the controllable silicon dimmer is used for the live wire L for connecting civil power AC, and the output end of the controllable silicon dimmer connects
Connect the first input end of the EMI filter circuit；
Second input of the EMI filter circuit is used to connecting the zero line N of the civil power AC, and the of the EMI filter circuit
One output end connects the first input end of the rectifier bridge, and the of the second output end connection rectifier bridge of the EMI filter circuit
Two inputs；
First output end of the rectifier bridge connects the output end of the leadage circuit, two control sources of the leadage circuit
End connects first end and the second end of the armature winding of the transformer respectively, and the second output end of the rectifier bridge is used to connect
Ground；
The input of the electric power management circuit connects the first end of the armature winding, the power end of the electric power management circuit
The first end of the assists winding of the transformer is connected, the second end of the assists winding of the transformer is used to be grounded；
The secondary windings of the transformer is used to connect LED/light source.
2. LED thyristor regulatings optical circuit according to claim 1, it is characterised in that the leadage circuit includes mould of releasing
Block, emitter following module and partial pressure current limliting module, wherein, the module of releasing connects the first output end of the rectifier bridge respectively
With the emitter following module, the emitter following module connects the partial pressure current limliting module, and the partial pressure current limliting module is also divided
First end and the second end of the armature winding are not connected.
3. LED thyristor regulatings optical circuit according to claim 2, it is characterised in that
The module of releasing includes the resistance R1 and resistance of first voltage input, second voltage input, metal-oxide-semiconductor Q2 and parallel connection
The first input end of R2, the metal-oxide-semiconductor Q2 drain electrode connection rectifier bridge, the source electrode connection described second of the metal-oxide-semiconductor Q2
Voltage input end, the grid of the metal-oxide-semiconductor Q2 connects the first voltage input, resistance R1 in parallel and resistance R2 two ends point
Drain electrode and the source electrode of the metal-oxide-semiconductor Q2 of the metal-oxide-semiconductor Q2 is not connected, and the second voltage input connects the armature winding
First end；
The emitter following module includes resistance R23, triode Q4, electric capacity C12 and resistance R3, the emitter stage of the triode Q4
The grid of the metal-oxide-semiconductor Q2 is connected, the colelctor electrode of the triode Q4 connects the source electrode of the metal-oxide-semiconductor Q2, the triode Q4
Base stage connect the partial pressure current limliting module, the two ends of the resistance R23 connect emitter stage and the institute of the triode Q4 respectively
State triode Q4 base stage, the two ends of the electric capacity C12 connect the emitter stage and the triode Q4 of the triode Q respectively
Colelctor electrode, the resistance R3 is in parallel with the electric capacity C12；
The division module includes tertiary voltage input, the 4th voltage input end, resistance R4, resistance R31, voltage-stabiliser tube Z2 and steady
Pressure pipe Z3, the anode of the voltage-stabiliser tube 3 connects the second voltage input, and the negative electrode of the voltage-stabiliser tube Z3 connects described respectively
Triode Q4 base stage and the tertiary voltage input, the two ends of the resistance R4 connect the tertiary voltage input respectively
With the second voltage input, the anode of the voltage-stabiliser tube Z2 by the resistance R31 connections tertiary voltage input,
The negative electrode of the voltage-stabiliser tube Z2 connects the 4th voltage input end, and the 4th voltage input end connects the second of the armature winding
End.
4. LED thyristor regulatings optical circuit according to claim 3, it is characterised in that the LED thyristor regulatings optical circuit is also
Including RCD absorbing circuits, the RCD absorbing circuits include the 5th voltage input end, resistance R12, resistance R19, electric capacity C4 and two
Pole pipe D1, the electric capacity C4 one end connect the first end of the armature winding, and the other end of the electric capacity C4 connects institute respectively
Diode D1 negative electrode and the 4th voltage input end is stated, the anode of the diode D1 passes through the 5th voltage input end
Connect the second end of the armature winding；
The resistance R12 and the resistance R19 are in parallel with the electric capacity C4 respectively.
5. LED thyristor regulatings optical circuit according to claim 1, it is characterised in that the LED thyristor regulatings optical circuit is also
Including RC antihunt circuits, the RC antihunt circuits include the resistance R9 and electric capacity C1 of series connection, and the first end of the armature winding is led to
Resistance R9 connections electric capacity C1 one end is crossed, the other end of the electric capacity C1 is used to be grounded.
6. LED thyristor regulatings optical circuit according to claim 1, it is characterised in that the LED thyristor regulatings optical circuit is also
Including " π " shape filter circuit, " π " the shape filter circuit includes electric capacity C2, electric capacity C3 and inductance L3, the two ends of the inductance L3
A voltage input end of the leadage circuit and the first end of the armature winding are connected respectively, and the two ends of the inductance L3 are also
It is respectively used to by the electric capacity C2 and electric capacity C3 ground connection.
7. LED thyristor regulatings optical circuit according to claim 6, it is characterised in that the LED thyristor regulatings optical circuit is also
Including diode D3, the voltage that the anode connection leadage circuit of the diode D3 is connected with the inductance L3 is defeated
Enter end, the first end that the negative electrode of the diode D3 passes through the inductance L3 connections armature winding.
8. LED thyristor regulatings optical circuit according to claim 1, it is characterised in that the LED thyristor regulatings optical circuit is also
Including output rectification circuit, the output rectification circuit includes the electric capacity C13 and resistance R27 of diode D6 and parallel connection, described two
Pole pipe D6 anode connects the first end of the secondary windings of the transformer, and the negative electrode of the diode D6 is used to connect LED light
The positive pole in source；
The electric capacity C13 in parallel and resistance R27 two ends connect the negative electrode and the secondary windings of the diode D6 respectively
Second end, the second end of the secondary windings is additionally operable to connect the negative pole of the LED/light source.
9. LED thyristor regulatings optical circuit according to claim 1, it is characterised in that the electric power management circuit includes electricity
Source control chip U1, VCC mu balanced circuit and ON-OFF control circuit, the input pin connection of the power management chip U1 are described just
The first end of level winding, the output pin of the power management chip U1 and the power management chip U1 current feedback pin
The ON-OFF control circuit is connected respectively, and the power pins of the power management chip U1 are connected by the VCC mu balanced circuits
The first end of the assists winding, the second end of the assists winding is used to be grounded, and the second end of the armature winding also passes through
The ON-OFF control circuit ground connection.
10. LED thyristor regulatings optical circuit according to claim 9, it is characterised in that the electric power management circuit also includes
Thermal-shutdown circuit and fast start circuit, the electric current that the thermal-shutdown circuit connects the power management chip U1 respectively are anti-
Pin and the VCC mu balanced circuits are presented, the fast start circuit connects the input pin of the power management chip U1 respectively
And the first end of the armature winding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621359438.XU CN206481472U (en) | 2016-12-12 | 2016-12-12 | LED thyristor regulating optical circuits |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621359438.XU CN206481472U (en) | 2016-12-12 | 2016-12-12 | LED thyristor regulating optical circuits |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658841A (en) * | 2016-12-12 | 2017-05-10 | 惠州Tcl照明电器有限公司 | LED silicon controlled rectifier dimming circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658841A (en) * | 2016-12-12 | 2017-05-10 | 惠州Tcl照明电器有限公司 | LED silicon controlled rectifier dimming circuit |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181218 Address after: 516000 No. 72 Huifeng 4th Road, Zhongkai High-tech Zone, Huizhou City, Guangdong Province (Factory Building) Co-patentee after: Huarui photoelectric (Huizhou) Co. Ltd. Patentee after: TCL Huarui Lighting Technology (Huizhou) Co., Ltd. Address before: 516006 No. 26, No. 3 Zhongkai Avenue, Huizhou City, Guangdong Province Patentee before: Huizhou TCL Lighting Appliance Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20201212 |