CN207427516U - A kind of LED linear driving device of full voltage - Google Patents
A kind of LED linear driving device of full voltage Download PDFInfo
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- CN207427516U CN207427516U CN201721203003.0U CN201721203003U CN207427516U CN 207427516 U CN207427516 U CN 207427516U CN 201721203003 U CN201721203003 U CN 201721203003U CN 207427516 U CN207427516 U CN 207427516U
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Abstract
The utility model discloses a kind of LED linear driving devices of full voltage, including input module, detection module, judge handover module, first light source module and secondary light source module；Input module connecting detection module judges handover module and first light source module, judges handover module connecting detection module, first light source module and secondary light source module；Input module is to input voltage rectifying and wave-filtering, output DC voltage；DC voltage is divided detection module and output detection voltage after secondary rectifying and wave-filtering；Judge that handover module will detect voltage compared with built-in reference voltage, judge to control first light source module and secondary light source block coupled in series when detection voltage is higher than reference voltage, judge to control first light source module and secondary light source wired in parallel when detection voltage is less than reference voltage.High voltage is connected, and low-voltage is in parallel, so as to ensure that light source can work normally in low-voltage or high pressure and meet brightness requirement, compatible global general-use voltage range 100V ~ 240V.
Description
Technical field
The utility model is related to technical field of LED illumination, the LED linear driving device of more particularly to a kind of full voltage.
Background technology
LED light source has the features such as specular removal, long-life, is widely used in the industries such as illumination, decoration.It is but existing linear
LED drive schemes can only design work in low-voltage 110V ± 20% or high voltage 220V ± 20%.If it is designed as low-voltage 110V
± 20% circuit will damage in ± 20% circuits of high voltage 220V；On the contrary, being designed as ± 20% circuits of high voltage 220V, use
It cannot work in ± 20% circuits of low-voltage 110V, it is impossible to reach modern illuminator whole world voltage universal standard requirement, limit
The general property of lamps and lanterns voltage is made.
Existing high voltage linear LED drive circuit makes high pressure lamp bead as shown in Figure 1, this circuit high-pressure lamp bead string connection
The voltage at both ends is approached with input voltage 220V.When input voltage is less than the voltage at high pressure lamp bead both ends, power can be increasingly
Darkness deepens for small and brightness；When input voltage is down to 110V, high pressure lamp bead only remains one group and is working, when design being not achieved completely
Brightness requirement.
If the high pressure lamp bead in Fig. 1 is replaced with into low pressure lamp bead（Compared with high voltage, the voltage of low pressure lamp bead subtracts herein
Half）, then it represents that linear circuit is driven for existing low-voltage LED, the voltage and input voltage 110V for making low pressure lamp bead both ends connect
Closely.When input voltage be higher than low pressure lamp bead both ends voltage when, power can increasing and brightness it is more and more brighter.If long-time work
Make at higher voltages, as that can damage lamp bead under 220V voltages or even make entire circuit permanent failure.
Above-mentioned high/low voltage linear LED drive circuit may be only configured to univoltage input, that is, may be only configured to low pressure
The power grid of 110V inputs or the power grid of high pressure 220V inputs, it is impossible to while compatible two power grids are used or applied in input power grid
Larger place is fluctuated, so as to limit the use scope of lamps and lanterns.
It is therefore desirable to the prior art is improved.
The content of the invention
Part in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of LED lines of full voltage
Property driving device, to solve the problems, such as that existing LED drive circuit cannot be compatible with high-voltage fence and low voltage electric network simultaneously.
In order to achieve the above object, the utility model takes following technical scheme：
A kind of LED linear driving device of full voltage including input module, detection module, judges handover module, first
Light source module and secondary light source module；
The input module carries out input voltage rectifying and wave-filtering, output DC voltage；Detection module is to DC voltage point
It presses and carries out output detection voltage after secondary rectifying and wave-filtering；Judge that handover module will detect voltage and be carried out with built-in reference voltage
Compare, judge to detect control first light source module and secondary light source block coupled in series when voltage is higher than reference voltage, judge detection electricity
It forces down and first light source module and secondary light source wired in parallel is controlled when reference voltage；
The input module connecting detection module judges handover module and first light source module, judges that handover module connects
Detection module, first light source module and secondary light source module.
In the LED linear driving device of the full voltage, the input module includes fuse, varistor, rectification
Bridge, the first capacitance and the second capacitance；One end connection firewire of the fuse, the one of the other end connection varistor of fuse
End and the 2nd foot of rectifier bridge, the other end connection zero curve of varistor and the 3rd foot of rectifier bridge, the 1st foot ground connection of rectifier bridge；
4th foot of rectifier bridge connects one end of the first capacitance and one end of the second capacitance, and the other end of the first capacitance connects the second capacitance
The other end and ground, one end connecting detection module of the second capacitance judges handover module and the input terminal of first light source module.
In the LED linear driving device of the full voltage, the input module further includes first resistor and second resistance；
One end connection zero curve of the first resistor, the other end of the other end connection varistor of first resistor and the 3rd of rectifier bridge the
Foot, one end of second resistance connect one end of the second capacitance, and the other end of second resistance connects the other end and ground of the second capacitance.
In the LED linear driving device of the full voltage, the detection module include the first diode, 3rd resistor,
4th resistance, the 5th resistance and the 3rd capacitance；One end of the 3rd resistor connects one end of the second capacitance, 3rd resistor it is another
One end connects the anode of the first diode and one end of the 4th resistance；One end of cathode the 3rd capacitance of connection of first diode,
One end of 5th resistance and judge handover module；The other end of 4th resistance connects the other end of the 3rd capacitance, the 5th resistance
The other end and ground.
In the LED linear driving device of the full voltage, the judgement handover module includes constant current chip, metal-oxide-semiconductor, steady
Pressure pipe, the second diode, third transistor, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the first power resistor and
Second power resistor；The output terminal of OUT1 feet connection first light source module of the constant current chip and the cathode of the second diode,
The VDD feet of constant current chip connect one end of the second capacitance and the input terminal of first light source module, constant current chip by the 6th resistance
VSP feet connect the cathode of the first diode, the CS1 feet of constant current chip connect one end of the first power resistor, the first power electricity
The other end of resistance connects the other end and ground of the 2nd 1 power resistor, and the OUT2 feet of constant current chip connect the defeated of secondary light source module
One end of outlet and the 7th resistance, the SPC feet of constant current chip connect one end of the 8th resistance and one end of the 9th resistance, constant current core
The other end of CP feet the 7th resistance of connection of piece, one end of CS2 feet the second power resistor of connection of constant current chip, the described 2nd 2
The cathode of pole pipe connects the cathode of the 3rd diode and the input terminal of secondary light source module, the anode connection voltage stabilizing of the 3rd diode
The drain electrode of the anode and metal-oxide-semiconductor of pipe, the grid of metal-oxide-semiconductor connect the other end of the 8th resistance and the cathode of voltage-stabiliser tube, the source of metal-oxide-semiconductor
Pole connects the other end of the 9th resistance and the input terminal of first light source module.
In the LED linear driving device of the full voltage, the first light source module is several LED light of having connected
First lamp string, secondary light source module are the second lamp string of several LED light of having connected.
In the LED linear driving device of the full voltage, the input module includes fuse, varistor, rectification
Bridge, electrolytic capacitor, the first capacitance, the second capacitance, first resistor and second resistance；One end connection firewire of the fuse, is protected
One end of other end connection varistor of dangerous silk and the 2nd foot of rectifier bridge, one end connection zero curve of first resistor, first resistor
The other end connection varistor the other end and rectifier bridge the 3rd foot, rectifier bridge the 1st foot ground connection；4th foot of rectifier bridge connects
Connect the anode of one end of the first capacitance, one end of the second capacitance and electrolytic capacitor EC；The second electricity of other end connection of first capacitance
The other end of appearance, the cathode and ground of electrolytic capacitor EC；The anode of one end connection electrolytic capacitor EC of second resistance, detection module,
Judge handover module and the input terminal of first light source module；The cathode of the other end connection electrolytic capacitor EC of second resistance.
Compared to the prior art, the LED linear driving device of a kind of full voltage provided by the utility model, by inputting mould
Block carries out input voltage rectifying and wave-filtering, output DC voltage；Detection module divides DC voltage and carries out secondary rectification filter
Output detection voltage after ripple；Judge that handover module will detect voltage compared with built-in reference voltage, judge to detect voltage
First light source module and secondary light source block coupled in series are controlled during higher than reference voltage, judges that detecting voltage is less than reference voltage time control
First light source module processed and secondary light source wired in parallel.Series connection makes first light source module and secondary light source mould so in high voltage
The voltage at block both ends is approached with high voltage；Parallel connection approaches the voltage at both ends and low-voltage when low-voltage inputs, so as to ensure light
Brightness requirement when source can work normally when inputting low-voltage or high pressure and meet design, a device just can be compatible with the whole world
Common voltage scope 100V ~ 240V.
Description of the drawings
Fig. 1 is existing high voltage linear LED drive circuit figure.
Fig. 2 is the structure diagram of the LED linear driving device of full voltage provided by the utility model.
Fig. 3 is the circuit diagram of one embodiment of LED linear driving device of full voltage provided by the utility model.
Fig. 4 is the circuit diagram of another embodiment of LED linear driving device of full voltage provided by the utility model.
Specific embodiment
The utility model provides a kind of LED linear driving device of full voltage, when detection inputs low-voltage, controls the first light
Source module works with secondary light source wired in parallel；When high input voltage, control first light source module and secondary light source module string
Join work, to ensure that light source can work normal table in low pressure or high pressure, to be suitable for global general-use voltage range
100V-240V.To make the purpose of this utility model, technical solution and effect clearer, clear and definite, develop simultaneously reality referring to the drawings
Example is applied the utility model is further described.It should be appreciated that specific embodiment described herein is only explaining this reality
With new, it is not used to limit the utility model.
Referring to Fig. 2, the LED linear driving device of full voltage provided in this embodiment includes input module 10, detection mould
Block 20 judges handover module 30, first light source module 40 and secondary light source module 50.The 10 connecting detection module of input module
20th, judge handover module 30 and first light source module 40, judge 30 connecting detection module 20 of handover module, first light source module 40
With secondary light source module 50.The input module 10 carries out input voltage rectifying and wave-filtering, output DC voltage V1.Detection module
20 couples of DC voltage V1 are divided and are carried out output detection voltage V2 after secondary rectifying and wave-filtering.Judge that handover module 30 will detect voltage
V2 is compared with built-in reference voltage, when judging that detecting voltage V2 is higher than reference voltage（It is identified as high voltage input state）
Control first light source module 40 and secondary light source module 50 are connected, when judging that detecting voltage V2 is less than reference voltage（It is identified as low
Control source state）Control first light source module 40 and secondary light source module 50 in parallel.
Wherein, first light source module is the first lamp string of several LED light of having connected, if secondary light source module is has connected
Second lamp string of dry LED light；The lamp string of input terminal i.e. the first lamp string of 40/ secondary light source module 50 of first light source module/second
Anode, output terminal is the cathode of corresponding lamp string.Series connection makes two lamp string compositions be one so in high voltage input state
Big lamp string, and the voltage at big lamp string both ends is approached with high voltage；The parallel connection of low-voltage input state makes two lamp string both ends respectively
Voltage is approached with low-voltage, so as to ensure that light source is inputting low-voltage or when high pressure can work normally and bright when meeting design
Degree requirement, a device just can be compatible with global general-use voltage range 100V ~ 240V.
Also referring to Fig. 3, the input module 10 includes fuse F1, varistor MOV, rectifier bridge BD1, the first electricity
Hold C1 and the second capacitance C2；The other end connection varistor MOV of one end connection the firewire L, fuse F1 of the fuse F1
One end and rectifier bridge BD1 the 2nd foot, varistor MOV the other end connection zero curve N and rectifier bridge BD1 the 3rd foot, rectification
The 1st foot ground connection of bridge BD1；One end of the first capacitance C1 of the 4th foot connection of rectifier bridge BD1 and one end of the second capacitance C2, first
The other end of capacitance C1 connects the other end and ground of the second capacitance C2, and one end connecting detection module 20 of the second capacitance C2 judges
The input terminal of handover module 30 and first light source module 40.
Wherein, between firewire L and zero curve N input AC input voltage.When input voltage, peak value occur excessively high（Such as it is more than
470V）Or when, fuse F1 fuses and varistor MOV puncture shorts, and excessively high voltage would not input LED linear driving
Device, so as to effectively protect circuit.Rectifier bridge BD1 carries out rectification to input voltage, and the first capacitance C1 and the second capacitance C2 are to whole
Input voltage after stream is filtered and exports DC voltage V1.
In further embodiment, the input module 10 further includes first resistor R1 and second resistance R2；First electricity
The one end for hindering R1 connects zero curve N, the other end of the other end connection varistor MOV of first resistor R1 and the 3rd of rectifier bridge BD1 the
Foot, one end of second resistance R2 connect one end of the second capacitance C2, and the other end of second resistance R2 connects the another of the second capacitance C2
One end and ground.First resistor R1 prevents that electric current is excessive for absorbing surge voltage（Current limliting）.Second resistance R2 filters for increasing
Ripple effect, and DC voltage V1 is made more to stablize.
In the present embodiment, the detection module 20 includes the first diode D1,3rd resistor R3, the 4th resistance R4, the 5th
Resistance R5 and the 3rd capacitance C3；One end of the 3rd resistor R3 connects one end of the second capacitance C2, and 3rd resistor R3's is another
The anode of the first diode D1 of end connection and one end of the 4th resistance R4；The cathode of first diode D1 connects the 3rd capacitance C3's
One end, the 5th resistance R5 one end and judge handover module 30；The other end of 4th resistance R4 connects the another of the 3rd capacitance C3
End, the other end and ground of the 5th resistance R5.
Wherein, the voltage based on input voltage is higher, judges handover module 30 in order to avoid high pressure is burnt out, and passes through the 3rd electricity
After resistance R3 and the 4th resistance R4 divides DC voltage V1, then it is compared.In order to ensure the accuracy of comparative result, go back
The circuit by the first diode D1, the 5th resistance R5 and the 3rd capacitance C3 composition is needed to carry out secondary rectifying and wave-filtering, output wave
The detection voltage V2 of shape more smooth steady.
In the present embodiment, the judgement handover module 30 includes constant current chip U1（Model RM9026）, it is metal-oxide-semiconductor Q1, steady
Pressure pipe ZD1, the second diode D2, third transistor D3, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance
R9, the first power resistor RS1 and the second power resistor RS2；The OUT1 feet connection first light source module 40 of the constant current chip U1
Output terminal and the second diode D2 cathode, the VDD feet of constant current chip U1 pass through the 6th resistance R6 the second capacitances of connection C2's
One end and the input terminal of first light source module 40, the VSP feet of constant current chip U1 connect the cathode of the first diode D1, constant current chip
The CS1 feet of U1 connect one end of the first power resistor RS1, and the other end of the first power resistor RS1 connects the 2nd 1 power resistor
The other end and ground of RS2, the output terminal of the OUT2 feet connection secondary light source module 50 of constant current chip U1 and the one of the 7th resistance R7
End, the SPC feet of constant current chip U1 connect one end of the 8th resistance R8 and one end of the 9th resistance R9, and the CP feet of constant current chip U1 connect
The other end of the 7th resistance R7 is connect, the CS2 feet of constant current chip U1 connect one end of the second power resistor RS2, the two or two pole
The cathode of pipe D2 connects the cathode of the 3rd diode D3 and the input terminal of secondary light source module 50, and the anode of the 3rd diode D3 connects
The drain electrode of the anode and metal-oxide-semiconductor Q1 of voltage-stabiliser tube ZD1 is connect, the grid of metal-oxide-semiconductor Q1 connects the other end and voltage-stabiliser tube of the 8th resistance R8
The cathode of ZD1, the source electrode of metal-oxide-semiconductor Q1 connect the other end of the 9th resistance R9 and the input terminal of first light source module 40.
Wherein, the VSP feet position for detecting voltage V2 to constant current chip U1 provides the voltage signal compared, to judge to input
Voltage is high voltage（Usually 220V）Or low-voltage（Usually 110V）.Constant current chip U1 be internally provided with comparison circuit and
Reference voltage, comparison circuit compare the size of detection voltage V2 and reference voltage, when judging that detecting voltage V2 is higher than reference voltage
SPC feet export low level, SPC feet output high level when detection voltage V2 is less than reference voltage.Metal-oxide-semiconductor Q1 be NMOS tube, grid
To be turned on during high level, end the second diode D2 and third transistor D3 is turned on, first light source module 40 and secondary light source
50 parallel operation of module.The grid of metal-oxide-semiconductor Q1 ends when being low level, then the second diode D2 conductings, third transistor D3 are cut
Only, 50 tandem working of first light source module 40 and secondary light source module.6th resistance R6 is starts resistance, for enabling constant current core
Piece U1.
Please continue to refer to Fig. 2 and Fig. 3, with 7 LED light of having connected in first light source module 40（LED1~LED7）, the second light
It has connected in source module 50 7 LED light（LED8~LED14）Exemplified by, the work of the LED linear driving device of the full voltage is former
It manages and is：
When the input voltage of input AC between firewire L/ zero curves N, input voltage pass sequentially through rectifier bridge BD1 rectifications,
Output DC voltage V1 enters subsequent conditioning circuit after first capacitance C1 and the second capacitance C2 filtering.DC voltage V1 passes through the 6th resistance
The enabling signal of R6 output high level makes constant current chip U1 work.Meanwhile DC voltage V1 is through 3rd resistor R3 and the 4th resistance
After R4 partial pressures, then pass through the first diode D1, the 3rd capacitance C3, the secondary rectifying and wave-filtering partial pressure of the 5th resistance R5 progress, output inspection
Survey the VSP feet of voltage V2 to constant current chip U1（Line voltage detects port）, compared with internal reference voltage.
When input voltage is higher than 170V, constant current chip U1 judges that detection voltage V2 higher than reference voltage, is identified as high electricity
Press the SPC feet of input state, at this time constant current chip U1（Connection in series-parallel control terminal）Output low level disconnects metal-oxide-semiconductor Q1, then and second
Diode D2 conductings, third transistor D3 cut-offs, 50 tandem working of first light source module 40 and secondary light source module.I.e. electric current according to
Secondary the second metal-oxide-semiconductor flowed by LED1 ~ LED7, second diode D2, LED8 ~ LED14 inside constant current chip, and from second
Metal-oxide-semiconductor pass through the second power resistor RS2 to ground, so as to putting bright light source（LED1~LED14）.At this time inside constant current chip U1
Detection circuit is imitated by detecting the voltage at the second power resistor RS2 both ends to control the switch time of the second metal-oxide-semiconductor with reaching constant current
Fruit.
When input voltage is less than 170V, constant current chip U1 judges that detection voltage V2 less than reference voltage, is identified as low electricity
Press input state, at this time constant current chip U1 SPC feet output high level makes metal-oxide-semiconductor Q1 turn on, then the second diode D2 cut-off and
Third transistor D3 is turned on, 50 parallel operation of first light source module 40 and secondary light source module.I.e.：The first via of DC voltage V1
Electric current passes through the first power electricity directly through the first metal-oxide-semiconductor inside LED1 ~ LED7 to constant current chip U1 from the first metal-oxide-semiconductor
Resistance RS1 to, so as to lighting first light source module 40（LED1~LED7）, internal detection circuit is again by detecting the first power
The voltage at resistance RS1 both ends controls the switch time of the first metal-oxide-semiconductor to reach constant current effect.Because inputting shape at this time for low-voltage
State, SPC feet output high level turn on metal-oxide-semiconductor Q1, the 3rd diode D3 conductings and the second diode D2 cut-offs, DC voltage V1
The second road electric current pass sequentially through metal-oxide-semiconductor Q1, the 3rd diode D3 to LED8 ~ LD14, arrive again inside constant current chip U1 second
Metal-oxide-semiconductor, pass through the second power resistor RS2 to light secondary light source module 50（LED8~LED14）, internal detection circuit
The switch time of the second metal-oxide-semiconductor is controlled to reach constant current effect by detecting the voltage at the second power resistor RS2 both ends again.Together
When, voltage-stabiliser tube ZD1 is sustainable to provide operating voltage to metal-oxide-semiconductor Q1.
It is to be appreciated that the circuit of LED linear driving device shown in Fig. 3 can also be used as high PF（Power factor）Value,
There is the circuit of stroboscopic.It is low PF by being improved i.e. adjustable to input module 10 on the basis of Fig. 3（Power factor）
Value, the circuit without stroboscopic.As shown in figure 4, increase an electrolytic capacitor EC in input module 10 as new input module
10/, the anode of the electrolytic capacitor EC connects one end of the second capacitance C2 and one end of second resistance R2, and electrolytic capacitor EC's is negative
The other end of pole connection second resistance R2 and the other end of the second capacitance C2.Other circuit structures are identical with Fig. 3.Compared with without frequency
Lightning road, without electrolytic capacitor is used in circuit shown in Fig. 3, this has been considerably improved circuit life
In conclusion the LED linear driving device of full voltage provided by the utility model, by the height for judging input voltage
Low level, when inputting low-voltage by first light source module and secondary light source wired in parallel, in high input voltage by the first light
Source module and secondary light source block coupled in series, to reach the different power grid of adaptive input, ensure that circuit in the defeated of 100V ~ 240V
It can good work in the range of entering.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model
Scope of the claims.
Claims (7)
1. the LED linear driving device of a kind of full voltage, which is characterized in that including input module, detection module, judge switching mould
Block, first light source module and secondary light source module；
The input module carries out input voltage rectifying and wave-filtering, output DC voltage；Detection module divides simultaneously DC voltage
Output detects voltage after carrying out secondary rectifying and wave-filtering；Judge that handover module compares voltage is detected with built-in reference voltage
Compared with control first light source module and secondary light source block coupled in series when judging to detect voltage higher than reference voltage judge to detect voltage
First light source module and secondary light source wired in parallel are controlled during less than reference voltage；
The input module connecting detection module judges handover module and first light source module, judges handover module connecting detection
Module, first light source module and secondary light source module.
2. the LED linear driving device of full voltage according to claim 1, which is characterized in that the input module includes
Fuse, varistor, rectifier bridge, the first capacitance and the second capacitance；The fuse one end connection firewire, fuse it is another
One end of one end connection varistor and the 2nd foot of rectifier bridge, the other end connection zero curve of varistor and the 3rd of rectifier bridge the
Foot, the 1st foot ground connection of rectifier bridge；4th foot of rectifier bridge connects one end of the first capacitance and one end of the second capacitance, the first capacitance
The other end connect the other end and ground of the second capacitance, one end connecting detection module of the second capacitance judges handover module and the
The input terminal of one light source module.
3. the LED linear driving device of full voltage according to claim 2, which is characterized in that the input module also wraps
Include first resistor and second resistance；One end connection zero curve of the first resistor, the other end connection varistor of first resistor
The other end and rectifier bridge the 3rd foot, one end of second resistance connects one end of the second capacitance, the other end connection of second resistance
The other end and ground of second capacitance.
4. the LED linear driving device of full voltage according to claim 3, which is characterized in that the detection module includes
First diode, 3rd resistor, the 4th resistance, the 5th resistance and the 3rd capacitance；The second electricity of one end connection of the 3rd resistor
One end of appearance, the other end of 3rd resistor connect the anode of the first diode and one end of the 4th resistance；First diode is born
Pole connect one end of the 3rd capacitance, the 5th resistance one end and judge handover module；The 3rd electricity of other end connection of 4th resistance
The other end and ground of the other end of appearance, the 5th resistance.
5. the LED linear driving device of full voltage according to claim 4, which is characterized in that the judgement handover module
Including constant current chip, metal-oxide-semiconductor, voltage-stabiliser tube, the second diode, third transistor, the 6th resistance, the 7th resistance, the 8th resistance,
Nine resistance, the first power resistor and the second power resistor；The output of the OUT1 feet connection first light source module of the constant current chip
End and the cathode of the second diode, the VDD feet of constant current chip connect one end and the first light source of the second capacitance by the 6th resistance
The input terminal of module, the VSP feet of constant current chip connect the cathode of the first diode, and the CS1 feet of constant current chip connect the first power
One end of resistance, the other end of the first power resistor connect the other end and ground of the 2nd 1 power resistor, the OUT2 of constant current chip
The output terminal of foot connection secondary light source module and one end of the 7th resistance, the SPC feet of constant current chip connect one end of the 8th resistance
With one end of the 9th resistance, the CP feet of constant current chip connect the other end of the 7th resistance, and the CS2 feet of constant current chip connect the second work(
One end of rate resistance, the cathode of second diode connect the cathode of the 3rd diode and the input terminal of secondary light source module,
The drain electrode of the anode and metal-oxide-semiconductor of the anode connection voltage-stabiliser tube of 3rd diode, the grid of metal-oxide-semiconductor connect the other end of the 8th resistance
With the cathode of voltage-stabiliser tube, the source electrode of metal-oxide-semiconductor connects the other end of the 9th resistance and the input terminal of first light source module.
6. the LED linear driving device of full voltage according to claim 1, which is characterized in that the first light source module
For the first lamp string of several LED light of having connected, secondary light source module is the second lamp string of several LED light of having connected.
7. the LED linear driving device of full voltage according to claim 1, which is characterized in that the input module includes
Fuse, varistor, rectifier bridge, electrolytic capacitor, the first capacitance, the second capacitance, first resistor and second resistance；The insurance
One end connection firewire of silk, one end of other end connection varistor of fuse and the 2nd foot of rectifier bridge, the one of first resistor
End connection zero curve, the other end of other end connection varistor of first resistor and the 3rd foot of rectifier bridge, the 1st foot of rectifier bridge
Ground connection；4th foot of rectifier bridge connects one end, one end of the second capacitance and the anode of electrolytic capacitor EC of the first capacitance；First electricity
The other end of appearance connects the other end, the cathode and ground of electrolytic capacitor EC of the second capacitance；One end connection electrolysis electricity of second resistance
Hold the anode of EC, detection module, judge handover module and the input terminal of first light source module；The other end connection electricity of second resistance
Solve the cathode of capacitance EC.
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| CN201721203003.0U CN207427516U (en) | 2017-09-20 | 2017-09-20 | A kind of LED linear driving device of full voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770132A (en) * | 2018-07-23 | 2018-11-06 | 深圳市明微电子股份有限公司 | LED full voltage high-efficient linear driving circuits |
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2017
- 2017-09-20 CN CN201721203003.0U patent/CN207427516U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770132A (en) * | 2018-07-23 | 2018-11-06 | 深圳市明微电子股份有限公司 | LED full voltage high-efficient linear driving circuits |
| CN108770132B (en) * | 2018-07-23 | 2023-11-03 | 深圳市明微电子股份有限公司 | LED full-voltage high-efficiency linear driving circuit |
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