CN205883663U - With going out with bright silicon controlled switch device of adjusting luminance - Google Patents
With going out with bright silicon controlled switch device of adjusting luminance Download PDFInfo
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- CN205883663U CN205883663U CN201620846203.7U CN201620846203U CN205883663U CN 205883663 U CN205883663 U CN 205883663U CN 201620846203 U CN201620846203 U CN 201620846203U CN 205883663 U CN205883663 U CN 205883663U
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- led
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- channel mos
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model provides a with going out with bright silicon controlled switch device of adjusting luminance is connected with a plurality of LED banks, establishes ties between a plurality of LED banks, and the device includes: the silicon controlled switch, the alternating current signal of output and the phase cut angular correlation of this silicon controlled switch, rectifier circuit is right the alternating current signal carries out the rectification, input voltage sampling and shaping circuit, will pass through after the rectification electric signal transition for the phase cut angle one -to -one with the silicon controlled switch stabilize the direct current signal, it reduces along with the phase cut angle increase of silicon controlled switch to stabilize the direct current signal, the output current regulating circuit, according to the size of stabilizing the direct current signal switches on or turn -offs, and output is followed stablize the electric current of the big microvariation of direct current signal to control the electric current size of the LED banks output of a plurality of series connection, make whole bright or whole the extinguishing of LED banks of a plurality of series connection. The utility model discloses a with going out with bright silicon controlled switch device of adjusting luminance can make the LED banks of a plurality of series connection all shine or whole extinguishing.
Description
Technical field
This utility model relates to electronic technology field, adjusts with bright reverse-blocking tetrode thyristor more particularly, it relates to a kind of with going out
Electro-optical device.
Background technology
In recent years, LED substitutes conventional incandescent etc. and is widely used as mains lighting supply, and LED drives common
Being divided into traditional Switching Power Supply to drive and Linear Driving, its linear drives is got over its simple system structure and cheap cost
Come the most universal；The LED illumination power supply application of tunable optical simultaneously also gets more and more, and controllable silicon light modulation is as a kind of common light modulation side
Formula is used widely.Document number is the Chinese patent of CN202759647U, discloses a kind of LED control with High Power Factor
Circuit processed and LED light device, the LED control circuit of this patent is the constant current driver circuit for LED that a kind of segmentation is opened step by step, can
Realizing High Power Factor and low harmonics distortion, collocation reverse-blocking tetrode thyristor realizes dimming function, is a kind of common
Application mode, the advantage of this application mode is also that High Power Factor and low harmonics distortion, but due to LED during thyristor regulating light
Lamp is that segmentation is opened step by step, and when reverse-blocking tetrode thyristor cut angle is bigger, input voltage is not enough so that all LED are opened, therefore
LED part is opened, and the brightness of LED is uniform not, and visual effect is poor.
Utility model content
The utility model proposes a kind of with going out with bright reverse-blocking tetrode thyristor light modulating device, it is possible to control the LED of multiple series connection
Lamp lamp group is the brightest or all extinguishes, it is to avoid the brightness of LED group is uniform not, strengthens visual effect.
To this end, the utility model proposes techniques below scheme:
A kind of with going out with bright reverse-blocking tetrode thyristor light modulating device, is connected with multiple LED groups, string between multiple LED groups
Connection, this device includes:
Reverse-blocking tetrode thyristor, connects civil power, for the ac signal that output is relevant to the cut angle of this reverse-blocking tetrode thyristor；
Rectification circuit, connects reverse-blocking tetrode thyristor, for described ac signal is carried out rectification；
Input voltage sampling and shaping circuit, connect rectification circuit, for the signal of telecommunication after over commutation is converted to
The cut angle stable DC signal of telecommunication one to one of reverse-blocking tetrode thyristor, the described stable DC signal of telecommunication cutting with reverse-blocking tetrode thyristor
Phase angle increases and reduces；
Output current regulating circuit, connects input voltage sampling and shaping circuit, for according to described stable DC telecommunications
Number size on or off, export the electric current of size variation with the described stable DC signal of telecommunication, to control multiple series connection
The size of current of LED group output, makes the LED group of the plurality of series connection the brightest or all extinguishes.
Wherein, described reverse-blocking tetrode thyristor light modulating device also includes:
Multi-stage LED constant-current drive circuit, is connected with output current regulating circuit and connects with multiple LED group one_to_one corresponding
Connect, be used for driving the plurality of LED group to work；The quantity of constant current driver circuit for LED is identical with the quantity of LED group；
Switch driving circuit, is connected with the input of first LED group and the outfan of output current regulating circuit,
For producing the maintenance electric current of reverse-blocking tetrode thyristor when multiple LED groups are extinguished, reverse-blocking tetrode thyristor is made normally to work.
Wherein, every grade of constant current driver circuit for LED includes that a current input terminal, a reference voltage end and an electric current are defeated
Go out end；Output current regulating circuit includes that switching tube, described switching tube include input, outfan and control end；
The current input terminal of constant current driver circuit for LED at different levels connects one to one with the outfan of each LED group, at different levels
The current output terminal of constant current driver circuit for LED is connected to the input of described switching tube altogether, and the control end of switching tube connects input electricity
Pressure sampling and shaping circuit, the outfan connecting valve drive circuit of switching tube.
Wherein, described switching tube is the first N-channel MOS pipe N1, the D extremely input of described first N-channel MOS pipe N1, S
Extremely outfan, G extremely controls end.
Wherein, the sampling of described input voltage and shaping circuit include resistance R1, resistance R2 and electric capacity C1；The first of resistance R1
End is connected with the control end of first end of resistance R2, first end of electric capacity C1 and switching tube, second end of resistance R2 and electric capacity
Second end of C1 connects with reference to ground.
Wherein, every grade of constant current driver circuit for LED includes a transport and placing device and a N-channel MOS pipe；Every grade of LED constant current is driven
The normal phase input end of the transport and placing device on galvanic electricity road is the reference voltage end of this grade of constant current driver circuit for LED, and every grade of LED constant current drives electricity
The reverse input end of the transport and placing device on road is connected with the S pole of the N-channel MOS pipe of this grade of constant current driver circuit for LED and is collectively forming this level
The current output terminal of constant current driver circuit for LED, extremely this grade LED constant current of the D of the N-channel MOS pipe of every grade of constant current driver circuit for LED
The current input terminal of drive circuit, the outfan of the transport and placing device of every grade of constant current driver circuit for LED and this grade of constant current driver circuit for LED
N-channel MOS pipe G pole connect.
Wherein, described switch driving circuit includes transport and placing device, N-channel MOS pipe, resistance R3 and resistance R4；Described transport and placing device
The reference voltage end that normal phase input end is this switch driving circuit, the outfan of described transport and placing device and described N-channel MOS pipe
G pole connects, and the D pole of described N-channel MOS pipe is connected with the input of first LED group, the reverse input end of described transport and placing device
Extremely jointly it is connected with first end of resistance R4 with the S of described N-channel MOS pipe, second end of resistance R4 and the outfan of switching tube
And first end of resistance R3 connects, second end of resistance R3 connects with reference to ground.
Wherein, change from small to big and less than or equal to described stable DC electricity in the case of threshold value in the cut angle of reverse-blocking tetrode thyristor
Signal from large to small, controls the voltage between G pole and the S pole of the first N-channel MOS pipe N1 and from large to small and is more than or equal to first
The turn-on threshold voltage of N-channel MOS pipe N1 so that the first N-channel MOS pipe N1 is in the conduction state, the first N-channel MOS pipe N1
Conducting resistance change from small to big, first N-channel MOS pipe N1 output electric current from large to small, multiple LED groups output electric current become
Little, the forward conduction voltage of multiple LED groups diminishes, and the input of first LED group and last LED group is defeated
Going out the voltage difference forward conduction voltage sum more than or equal to all LED groups of end, multiple LED groups are in all light shape
State, and brightness is more and more less；
The cut angle regulation of reverse-blocking tetrode thyristor is to more than in the case of threshold value, the described stable DC signal of telecommunication makes the first N-channel
The voltage between G pole and the S pole of the metal-oxide-semiconductor N1 turn-on threshold voltage less than the first N-channel MOS pipe N1, the first N-channel MOS pipe
N1 is off state, and multiple LED groups are all extinguished.
The utility model proposes is a kind of with going out with bright reverse-blocking tetrode thyristor light modulating device, and generation is cut with reverse-blocking tetrode thyristor
The phase angle one_to_one corresponding stable DC signal of telecommunication, the described stable DC signal of telecommunication increases with the cut angle of reverse-blocking tetrode thyristor and reduces,
Utilizing this stable DC signal of telecommunication can control the duty of LED group of multiple series connection, the LED group making multiple series connection is complete
Portion is bright or all extinguishes, it is to avoid the brightness of LED group is uniform not, strengthens visual effect.
Accompanying drawing explanation
Fig. 1 is a kind of same block diagram with bright reverse-blocking tetrode thyristor light modulating device of going out that this utility model provides.
Fig. 2 is the same structure gone out with bright reverse-blocking tetrode thyristor light modulating device of a kind of optimal way that this utility model provides
Block diagram
Fig. 3 is the same circuit diagram gone out with bright reverse-blocking tetrode thyristor light modulating device that this utility model provides.
Fig. 4 is the relevant ac signal oscillogram in the cut angle to this reverse-blocking tetrode thyristor of reverse-blocking tetrode thyristor output.
Fig. 5 is the stable DC electric signal waveform figure one to one of the cut angle with reverse-blocking tetrode thyristor.
Fig. 6 is the current signal cutting phase angle change with reverse-blocking tetrode thyristor of multiple LED groups of the present utility model output
Oscillogram.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
Type embodiment is described in further detail.
This utility model provides a kind of with going out with bright reverse-blocking tetrode thyristor light modulating device, this device and multiple LED groups 100
Connecting, connect between multiple LED groups 100, a LED group includes the LED of a LED or multiple parallel connection.
As it is shown in figure 1, this device includes:
Reverse-blocking tetrode thyristor 101, connects civil power, for the alternating current that output is relevant to the cut angle of this reverse-blocking tetrode thyristor 101
Signal；
Rectification circuit 102, connects reverse-blocking tetrode thyristor 101, for described ac signal is carried out rectification；
Input voltage sampling and shaping circuit 103, connect rectification circuit 102, for being turned by the signal of telecommunication after over commutation
Being changed to the cut angle stable DC signal of telecommunication one to one with reverse-blocking tetrode thyristor 101, the described stable DC signal of telecommunication is with controlled
The cut angle of transwitch 101 increases and reduces；
Output current regulating circuit 104, connects input voltage sampling and shaping circuit 103, for according to described stable straight
The size on or off of the stream signal of telecommunication, exports the electric current of the size variation with the described stable DC signal of telecommunication, multiple to control
The size of current of LED group 100 output of series connection, makes the LED group 100 of the plurality of series connection the brightest or all extinguishes.
As a kind of optimal way of the present embodiment, as in figure 2 it is shown, this device also includes:
Multi-stage LED constant-current drive circuit 105, with output current regulating circuit 104 be connected and with multiple LED groups 100 1
One corresponding connection, is used for driving the plurality of LED group 100 to work；The quantity of constant current driver circuit for LED and the number of LED group
Measure identical；With
Switch driving circuit 106, with input and the output of output current regulating circuit 104 of first LED group
End connects, and for producing the maintenance electric current of reverse-blocking tetrode thyristor 101 when multiple LED groups 100 are extinguished, makes reverse-blocking tetrode thyristor 101
Can normally work.
Preferably, every grade of constant current driver circuit for LED includes a current input terminal, a reference voltage end and an electric current
Outfan；Output current regulating circuit 104 includes that switching tube, described switching tube include input, outfan and control end；
The current input terminal of constant current driver circuit for LED at different levels connects one to one with the outfan of each LED group, at different levels
The current output terminal of constant current driver circuit for LED is connected to the input of described switching tube altogether, and the control end of switching tube connects input electricity
Pressure sampling and shaping circuit 103, the outfan connecting valve drive circuit 106 of switching tube.
Fig. 3 is the circuit diagram of reverse-blocking tetrode thyristor light modulating device, and the first N-channel MOS pipe N1 is output current regulating circuit
104, the D extremely input of described first N-channel MOS pipe N1, S extremely outfan, G extremely controls end.
Input voltage sampling and shaping circuit 103 include resistance R1, resistance R2 and electric capacity C1；First end of resistance R1 and electricity
Resistance first end of R2, the control end of first end of electric capacity C1 and switching tube connect, the of second end of resistance R2 and electric capacity C1
Two ends connect with reference to ground.
Every grade of constant current driver circuit for LED includes that a transport and placing device and a N-channel MOS pipe (only illustrate level Four LED in Fig. 5
Constant-current drive circuit and four LED groups)；The normal phase input end of the transport and placing device of every grade of constant current driver circuit for LED is this grade of LED perseverance
The reference voltage end of stream drive circuit, reverse input end is connected with the S pole of the N-channel MOS pipe of this grade of constant current driver circuit for LED altogether
With the current output terminal of this grade of constant current driver circuit for LED of formation, this current output terminal connects the D pole of the first N-channel MOS pipe N1,
The current input terminal of D extremely this grade of constant current driver circuit for LED of the N-channel MOS pipe of every grade of constant current driver circuit for LED, it is right to connect
The outfan of the LED group answered, the outfan of the transport and placing device of every grade of constant current driver circuit for LED and this grade of constant current driver circuit for LED
N-channel MOS pipe G pole connect.
Described switch driving circuit 106 includes a transport and placing device, N-channel MOS pipe, a resistance R3 and resistance R4；This is opened
The normal phase input end of the transport and placing device closing drive circuit 106 is reference voltage end, the output of the transport and placing device of this switch driving circuit 106
End is connected with the G pole of the N-channel MOS pipe of this switch driving circuit 106, the D pole of this N-channel MOS pipe and first LED group
Input connects, and the S of the reverse input end of the transport and placing device of switch driving circuit 106 and this N-channel MOS pipe is extremely common and resistance R4
The first end connect, the first end connection of second end of resistance R4 and the S pole of the first N-channel MOS pipe and resistance R3, resistance R3
Second end connect with reference to ground.
Fig. 4 is the ac signal relevant to the cut angle of this reverse-blocking tetrode thyristor 101 of reverse-blocking tetrode thyristor 101 output
(Vin) oscillogram, being incremented by of cycle T the most over time in figure, the cut angle of reverse-blocking tetrode thyristor 101 increase (but with
In one period of time T, the cut angle of reverse-blocking tetrode thyristor is constant), as can be seen from Figure, the cut angle of reverse-blocking tetrode thyristor 101 is
When 0, exporting complete ac signal, the cut angle of reverse-blocking tetrode thyristor 101 is the biggest, and the signal of telecommunication being cut off is the most.
By rectification circuit 102, this ac signal is carried out rectification, the DC signal obtained after over commutation be with
The cycle DC signal of time change, this time dependent cycle DC signal and the cut angle of reverse-blocking tetrode thyristor 101
Relevant, this cycle direct current signal is converted into the stable DC signal of telecommunication (Vt), obtains direct current signal incoherent with the time, i.e. exist
In the case of the cut angle of reverse-blocking tetrode thyristor 101 is constant, the value of the stable DC signal of telecommunication is stablized constant, but when controllable silicon is opened
Closing the cut angle increase of 101, the value of the stable DC signal of telecommunication reduces, as shown in Figure 5.When the stable DC signal of telecommunication changes,
Multiple LED groups 100 export electric current and change, as shown in Figure 6.
The operation principle of this circuit is as follows:
Switch driving circuit 106 produces the maintenance electric current of reverse-blocking tetrode thyristor 101 when four LED groups are extinguished, and makes controlled
Transwitch 101 can normally work, and the maintenance electric current of generation is V0/ (R3+R4)；The first order is to fourth stage constant current driver circuit for LED
Control the output electric current of four LED groups, respectively V1/ (R3+R respectivelyN1)、V2/(R3+RN1)、V3/(R3+RN1)、V4/(R3+
RN1), wherein, RN1It is the conducting resistance of the first N-channel MOS pipe N1, V0 ＜ V1 ＜ V2 ＜ V3 ＜ V4.
When not carrying out controllable silicon light modulation or light modulation, the cut angle of reverse-blocking tetrode thyristor 101 is the least, reverse-blocking tetrode thyristor 101
The voltage ratio of the stable DC signal of telecommunication of output is bigger, it is sufficient to make four LED groups the brightest, and input voltage is sampled and shaping
Circuit 103 output voltage is higher, and the voltage Vgs between G pole and the S pole of the first N-channel MOS pipe N1 is very big, the first N-channel MOS
Pipe N1 is operated in deep linear zone, its conducting resistance RN1The least, between its D pole and S pole, voltage Vds is the least, and four LED groups are defeated
Go out electric current and may approximately equal to V1/R3, V2/R3, V3/R3 and V4/R3.
Change from small to big and less than or equal to threshold value, as shown in Figure 4, input voltage in the cut angle of regulation reverse-blocking tetrode thyristor 101
The stable DC signal of telecommunication of sampling and shaping circuit 103 output from large to small, as it is shown in figure 5, the G pole of the first N-channel MOS pipe N1
And the turn-on threshold voltage that the voltage between S pole is from large to small and more than or equal to the first N-channel MOS pipe N1, the first N-channel
Metal-oxide-semiconductor N1 is in the conduction state, and its duty is gradually moved to saturation region by deep linear zone, its conducting resistance RN1Gradually increase
Greatly, from large to small, the output electric current (Iout) of four LED groups diminishes the electric current of its output, as shown in Figure 6, and four LED groups
Forward conduction voltage all diminish, and the voltage difference of the outfan of the input of first LED group and last LED group
Value is more than or equal to the forward conduction voltage sum of all LED groups, and therefore, four LED groups export at reverse-blocking tetrode thyristor 101
Voltage relatively low time still tend to remain on, four LED group all light, brightness is along with the cut angle of reverse-blocking tetrode thyristor 101
Increase more and more less.
The cut angle of continuation regulation reverse-blocking tetrode thyristor 101 is to more than threshold value, and input voltage sampling and shaping circuit 103 export
The stable DC signal of telecommunication the least so that the voltage Vgs between G pole and the S pole of the first N-channel MOS pipe N1 be less than a N ditch
The turn-on threshold voltage of road metal-oxide-semiconductor N1, the first N-channel MOS pipe N1 is off state, and multiple LED groups 100 are all extinguished.
Described threshold value is relevant with the ratio of resistance 1 and resistance R2, can be adjusted according to this ratio, and this utility model is preferred
This threshold value is the 70%～80% of the maximum at the cut angle of reverse-blocking tetrode thyristor 101；The unlatching threshold value of the first N-channel MOS pipe N1
Voltage is different according to different manufacturing process, and this utility model is preferably at 0.7V～1V.
This utility model provides and produces reverse-blocking tetrode thyristor light modulating device, produces the cut angle one_to_one corresponding with reverse-blocking tetrode thyristor
The stable DC signal of telecommunication, the stable DC signal of telecommunication increases with the cut angle of reverse-blocking tetrode thyristor and reduces, by this stable DC electricity
Signal can control the duty of the LED group of multiple series connection, makes the LED group of multiple series connection the brightest or all extinguishes,
Make each LED luminosity uniform, good visual effect.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not
Being confined to this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in
Change or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is as the criterion with scope of the claims.
Claims (8)
1. with going out with a bright reverse-blocking tetrode thyristor light modulating device, it is connected with multiple LED groups, connects between multiple LED groups,
It is characterized in that, including:
Reverse-blocking tetrode thyristor, connects civil power, for the ac signal that output is relevant to the cut angle of this reverse-blocking tetrode thyristor；
Rectification circuit, connects reverse-blocking tetrode thyristor, for described ac signal is carried out rectification；
Input voltage sampling and shaping circuit, connect rectification circuit, for being converted to the signal of telecommunication after over commutation with controlled
The cut angle stable DC signal of telecommunication one to one of transwitch, the described stable DC signal of telecommunication is with the cut angle of reverse-blocking tetrode thyristor
Increase and reduce；
Output current regulating circuit, connects input voltage sampling and shaping circuit, for according to the described stable DC signal of telecommunication
Size on or off, exports the electric current of the size variation with the described stable DC signal of telecommunication, to control the LED of multiple series connection
The size of current of group output, makes the LED group of the plurality of series connection the brightest or all extinguishes.
2. reverse-blocking tetrode thyristor light modulating device as claimed in claim 1, is characterised by, also includes:
Multi-stage LED constant-current drive circuit, is connected with output current regulating circuit and connects one to one with multiple LED groups, using
In driving the work of the plurality of LED group；The quantity of constant current driver circuit for LED is identical with the quantity of LED group；
Switch driving circuit, is connected with the input of first LED group and the outfan of output current regulating circuit, is used for
Produce the maintenance electric current of reverse-blocking tetrode thyristor when multiple LED groups are extinguished, make reverse-blocking tetrode thyristor normally to work.
3. reverse-blocking tetrode thyristor light modulating device as claimed in claim 2, is characterised by, every grade of constant current driver circuit for LED includes one
Individual current input terminal, a reference voltage end and a current output terminal；Output current regulating circuit include switching tube, described in open
Close pipe and include input, outfan and control end；
The current input terminal of constant current driver circuit for LED at different levels connects one to one with the outfan of each LED group, LED at different levels
The current output terminal of constant-current drive circuit is connected to the input of described switching tube altogether, and the control end of switching tube connects input voltage and adopts
Sample and shaping circuit, the outfan connecting valve drive circuit of switching tube.
4. reverse-blocking tetrode thyristor light modulating device as claimed in claim 3, is characterised by, described switching tube is the first N-channel MOS pipe
N1, the D extremely input of described first N-channel MOS pipe N1, S extremely outfan, G extremely controls end.
5. reverse-blocking tetrode thyristor light modulating device as claimed in claim 3, is characterised by, the sampling of described input voltage and shaping circuit
Including resistance R1, resistance R2 and electric capacity C1；First end of resistance R1 and first end of resistance R2, first end of electric capacity C1 and open
The control end closing pipe connects, and second end of resistance R2 and second end of electric capacity C1 connect with reference to ground.
6. reverse-blocking tetrode thyristor light modulating device as claimed in claim 3, is characterised by, every grade of constant current driver circuit for LED includes one
Individual transport and placing device and a N-channel MOS pipe；The normal phase input end of the transport and placing device of every grade of constant current driver circuit for LED is this grade of LED constant current
The reference voltage end of drive circuit, the reverse input end of the transport and placing device of every grade of constant current driver circuit for LED drives with this grade of LED constant current
The S pole of the N-channel MOS pipe of circuit connects the current output terminal being collectively forming this grade of constant current driver circuit for LED, every grade of LED constant current
The current input terminal of D extremely this grade of constant current driver circuit for LED of the N-channel MOS pipe of drive circuit, every grade of LED constant current drives electricity
The outfan of the transport and placing device on road is connected with the G pole of the N-channel MOS pipe of this grade of constant current driver circuit for LED.
7. reverse-blocking tetrode thyristor light modulating device as claimed in claim 3, is characterised by, described switch driving circuit includes amplifier
Device, N-channel MOS pipe, resistance R3 and resistance R4；The normal phase input end of described transport and placing device is the reference voltage of this switch driving circuit
End, the outfan of described transport and placing device is connected with the G pole of described N-channel MOS pipe, the D pole of described N-channel MOS pipe and first LED
The input of lamp group connects, and the reverse input end of described transport and placing device and the S of described N-channel MOS pipe be extremely common and the of resistance R4
One end connects, and second end of resistance R4 is connected with the first end of the outfan of switching tube and resistance R3, second end of resistance R3
Connect with reference to ground.
8. reverse-blocking tetrode thyristor light modulating device as claimed in claim 4, is characterised by:
Change from small to big and less than or equal to the described stable DC signal of telecommunication in the case of threshold value by greatly in the cut angle of reverse-blocking tetrode thyristor
Diminish, control the voltage between G pole and the S pole of the first N-channel MOS pipe N1 and from large to small and be more than or equal to the first N-channel MOS
The turn-on threshold voltage of pipe N1 so that the first N-channel MOS pipe N1 is in the conduction state, the electric conduction of the first N-channel MOS pipe N1
Resistance is changed from small to big, and from large to small, the electric current of multiple LED groups output diminishes the electric current of the first N-channel MOS pipe N1 output, multiple
The forward conduction voltage of LED group diminishes, and the outfan of the input of first LED group and last LED group
Voltage difference is more than or equal to the forward conduction voltage sum of all LED groups, and multiple LED groups are in all light state, and bright
Spend more and more less；
The cut angle regulation of reverse-blocking tetrode thyristor is to more than in the case of threshold value, the described stable DC signal of telecommunication makes the first N-channel MOS
The voltage between G pole and the S pole of the pipe N1 turn-on threshold voltage less than the first N-channel MOS pipe N1, at the first N-channel MOS pipe N1
In off state, multiple LED groups are all extinguished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620846203.7U CN205883663U (en) | 2016-08-05 | 2016-08-05 | With going out with bright silicon controlled switch device of adjusting luminance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620846203.7U CN205883663U (en) | 2016-08-05 | 2016-08-05 | With going out with bright silicon controlled switch device of adjusting luminance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205883663U true CN205883663U (en) | 2017-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620846203.7U Withdrawn - After Issue CN205883663U (en) | 2016-08-05 | 2016-08-05 | With going out with bright silicon controlled switch device of adjusting luminance |
Country Status (1)
| Country | Link |
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| CN (1) | CN205883663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231727A (en) * | 2016-08-05 | 2016-12-14 | 深圳市明微电子股份有限公司 | Produce the method for the stable DC signal of telecommunication, reverse-blocking tetrode thyristor light-dimming method and device |
-
2016
- 2016-08-05 CN CN201620846203.7U patent/CN205883663U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231727A (en) * | 2016-08-05 | 2016-12-14 | 深圳市明微电子股份有限公司 | Produce the method for the stable DC signal of telecommunication, reverse-blocking tetrode thyristor light-dimming method and device |
| CN106231727B (en) * | 2016-08-05 | 2017-12-12 | 深圳市明微电子股份有限公司 | Produce method, reverse-blocking tetrode thyristor light-dimming method and the device of stable DC electric signal |
| WO2018023953A1 (en) * | 2016-08-05 | 2018-02-08 | 深圳市明微电子股份有限公司 | Method of generating stable direct current signal, silicon controlled switch dimming method and device |
| US10470261B2 (en) | 2016-08-05 | 2019-11-05 | Shenzhen Sunmoon Microelectronics Co., Ltd. | Method of generating stable direct current signal, silicon controlled switch dimming method and device |
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| AV01 | Patent right actively abandoned |
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