CN211297064U - Code-pulling segmented dimming circuit - Google Patents
Code-pulling segmented dimming circuit Download PDFInfo
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- CN211297064U CN211297064U CN201922042323.8U CN201922042323U CN211297064U CN 211297064 U CN211297064 U CN 211297064U CN 201922042323 U CN201922042323 U CN 201922042323U CN 211297064 U CN211297064 U CN 211297064U
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Abstract
The utility model discloses a segment-pulling dimming circuit, which comprises an AC input end, an EMI module, a rectifying module, an input filter module, a transformer, an output filter module, a DC output end and a PWM main control module which are connected together in sequence, wherein the DC output end is connected with an LED lamp array module, the AC input end is connected with a wall switch, the segment-pulling dimming circuit also comprises a segment-pulling dimming module, a knob switch dimming module and a voltage-stabilizing power supply module, the voltage-stabilizing power supply module is connected with the input filter module, a primary coil of the transformer and the segment-pulling dimming module, the knob switch dimming module is connected with the PWM main control module through a photoelectric coupling feedback module, the segment-pulling dimming module comprises a dial switch control chip, a brightness dial switch and a power dial switch which are connected with the dial switch control chip, the brightness dial switch and the power dial switch are connected with each other, and the PWM main control module is connected after the power dial switch is connected with, the dial switch control chip is connected with the PWM main control module.
Description
The technical field is as follows:
the utility model relates to an electronic circuit technical field refers in particular to a draw code segmentation dimming circuit.
Background art:
an LED, an abbreviation of Light Emitting Diode, is a solid-state semiconductor device capable of converting electrical energy into visible Light, which can directly convert electricity into Light.
At the present stage, under the condition of global pursuit of health, environmental protection and great energy crisis, the LED illumination is recognized as an important way for health, energy conservation and environmental protection, and the application range of the LED illumination is expanded at a higher speed. The LED is used for lighting and lamp decoration, has the advantages of environmental protection, long service life, low power consumption and the like, and gradually replaces the original small incandescent lamp bulb and fluorescent lamp by the LED. Even so, the brightness of the LEDs needs to be adjusted to suit the environmental needs to further save energy.
The existing dimming switch is troublesome in dimming, cannot realize segmented dimming when commonly used LEDs are dimmed, and can only dim light in a single mode, so that the dimming switch is very convenient to use.
In view of the above, the present inventors propose the following.
The utility model has the following contents:
an object of the utility model is to overcome prior art not enough, provide a pull out code segmentation dimming circuit.
In order to solve the technical problem, the utility model discloses a following technical scheme: the code-pulling section dimming circuit comprises an AC input end, an EMI module, a rectifying module, an input filter module, a transformer, an output filter module, a DC output end and a PWM (pulse-width modulation) main control module which is electrically connected with the transformer and the output filter module, wherein the DC output end is connected with an LED (light-emitting diode) lamp array module, the code-pulling section dimming circuit also comprises a code-pulling section dimming module, a knob switch dimming module and a voltage-stabilizing power supply module, the voltage-stabilizing power supply module is connected with the input filter module, a primary coil of the transformer and the code-pulling section dimming module, the knob switch dimming module is connected with the PWM main control module through a photoelectric coupling feedback module, the code-pulling section dimming module comprises a dial switch control chip, and a brightness dial switch and a power dial switch which are connected with the dial switch control chip, and the brightness dial switch and the power dial switch are connected with each other, and the power dial switch is connected with the PWM main control module after being connected with the current limiting resistor module, and the dial switch control chip is connected with the PWM main control module.
Further, in the above technical solution, the knob switch dimming module includes a knob switch control chip and a knob switch connected to the knob switch control chip, and the knob switch control chip is connected to the photoelectric coupling feedback module.
Further, in the above technical solution, the current limiting resistor module includes a plurality of current limiting resistor modules connected in parallel.
Further, in the above technical solution, the voltage-stabilizing power supply module includes a triode Q2, a voltage-stabilizing chip, a diode D2, a diode D1, and a voltage-stabilizing diode ZD1, a pole B of the triode Q2 is connected to the voltage-stabilizing diode ZD1, a pole C of the triode Q2 is connected to the primary coil of the transformer and the PWM main control module after being connected to the diode D1, a pole C of the triode Q2 is also connected to the voltage-stabilizing chip, a pole E of the triode Q2 is connected to the diode D2 and then connected to the PWM main control module, a charging capacitor CE1 is connected between the diode D2 and the voltage-stabilizing diode ZD1, the charging capacitor CE1 is further connected to a starting resistor R18 and a starting resistor R17, the starting resistor R17 is connected to the input filter module, and the voltage-stabilizing chip is connected to the code division section light-modulating module.
Further, in the foregoing technical solution, the EMI module includes a fuse connected to the AC input terminal, a first common mode inductor connected to the fuse, a second common mode inductor connected to the fuse, and an RC loop, and the RC loop is connected to the rectification module.
Further, in the above technical solution, the rectifier module includes a rectifier bridge chip; the input filter module comprises a capacitor CBB2 and a capacitor CBB1 which are connected in parallel with each other, and an RL loop connected between the capacitor CBB2 and the capacitor CBB 1.
Furthermore, in the above technical solution, the output filter module includes an electrolytic capacitor EC2, a resistor R23, an electrolytic capacitor EC3, a resistor R24, a diode D7 connected to the electrolytic capacitor EC2, a diode D8 connected to two ends of the diode D7 in parallel, a resistor R22 and a capacitor C7 connected to two ends of the diode D7 in parallel, and a resistor R21 connected to two ends of the resistor R22 in parallel, wherein the resistor R21 is connected to the transformer, and the resistor R24 is connected to the DC output terminal.
Further, in the above technical solution, the photoelectric coupling feedback module includes a photoelectric coupler.
Further, in the above technical solution, the PWM main control module includes a PWM main control chip and a MOS transistor Q1 connected to the PWM main control chip and serving as an electronic switch, and the MOS transistor Q1 is connected to the transformer.
After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect: the utility model discloses during operation, this AC input contact AC voltage, through EMI module noise in filtering electric wire netting and the power, rectifier module and input filter module change AC voltage into DC voltage, and flow to transformer elementary and steady voltage power supply module, when steady voltage power supply module for PWM main control module, pull out code segmentation dimming module and knob switch dimming module power supply, whole circuit begins work; the brightness dial switch and the power dial switch are respectively used for adjusting brightness (100%, 60%, 50%, 40%) and power (40W, 35W, 30W, 25W), and when the dial switch is adjusted to 60% brightness, the wall switch controls the brightness of 100% and 60%. Namely, the wall switch is turned on once by 100 percent, the wall switch is turned on again after being turned off by 60 percent of brightness, and the brightness of other sections can be realized by analogy; when switching power supply, optoelectronic coupling feedback module receives voltage, gives a high level of PWM host system through optoelectronic coupling feedback module, leads to the inside procedure of PWM host system, gives a signal of PWM foot of PWM main control chip among the PWM host system, controls the output of whole voltage electric current to reach the requirement of on-off regulation luminance, can adjust luminance through control knob switch module of adjusting luminance, increase a mode of adjusting luminance with this, it is very convenient to use, the order the utility model discloses extremely strong market competition has.
Description of the drawings:
fig. 1 is a circuit diagram of the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
As shown in fig. 1, a code-division-based dimming circuit comprises an AC input terminal 1, an EMI module 2, a rectification module 3, an input filter module 4, a transformer 5, an output filter module 6, a DC output terminal 7, and a PWM main control module 8 electrically connected to the transformer 5 and the output filter module 6, wherein the DC output terminal 7 is connected to an LED lamp array module, the code-division-based dimming circuit further comprises a code-division-based dimming module 91, a rotary switch dimming module 92, and a voltage-stabilizing power supply module 93, the voltage-stabilizing power supply module 93 is connected to the input filter module 4, a primary coil of the transformer 5, and the code-division-based dimming module 91, the rotary switch dimming module 92 is connected to the PWM main control module 8 through a photoelectric coupling feedback module 94, the code-division-based dimming module 91 comprises a code-division switch control chip 911, and a brightness code-division switch 912 and a power code-division switch 913 connected to the code-division-switch control chip 911, the brightness dial switch 912 and the power dial switch 913 are connected to each other, the power dial switch 913 is connected to the current limiting resistor module 914 and then connected to the PWM main control module 8, and the dial switch control chip 911 is connected to the PWM main control module 8. The utility model discloses during operation, this AC input 1 contacts AC voltage, filters the noise in electric wire netting and the power through EMI module 2, and rectifier module 3 and input filter module 4 change AC voltage into DC voltage, and flow to transformer elementary and steady voltage power supply module 93, when steady voltage power supply module 93 for PWM main control module 8, pull out code segmentation dimming module 91 and knob switch dimming module 92 power supply, whole circuit begins work; the brightness dial switch 912 and the power dial switch 913 are respectively used for adjusting brightness (100%, 60%, 50%, 40%) and power (40W, 35W, 30W, 25W), and when the dial switch is adjusted to 60% brightness, the wall switch controls the brightness of 100% and 60%. Namely, the wall switch is turned on once by 100 percent, the wall switch is turned on again after being turned off by 60 percent of brightness, and the brightness of other sections can be realized by analogy; when switching power supply, optoelectronic coupling feedback module 94 receives voltage, give 8 high levels of PWM host system through optoelectronic coupling feedback module 94, lead to 8 internal program of PWM host system, give PWM main control chip's a signal of PWM foot among the PWM host system 8, control the output of whole voltage electric current, thereby reach the requirement of on-off regulation luminance, can adjust luminance through control knob switch module 92, increase a mode of adjusting luminance with this, it is very convenient to use, the order the utility model discloses extremely strong market competition has.
The PWM main control module 8 includes a PWM main control chip 81 and a MOS transistor Q1 connected to the PWM main control chip 81 and serving as an electronic switch, and the MOS transistor Q1 is connected to the transformer.
The knob switch dimming module 92 comprises a knob switch control chip 921 and a knob switch 922 connected with the knob switch control chip 921, and the knob switch control chip 921 is connected with the photoelectric coupling feedback module 94.
The current limiting resistor module 914 comprises a plurality of current limiting resistor modules connected in parallel.
The voltage stabilizing power supply module 93 comprises a triode Q2, a voltage stabilizing chip 931, a diode D2, a diode D1 and a voltage stabilizing diode ZD1, wherein the B pole of the triode Q2 is connected with the voltage stabilizing diode ZD1, the C pole of the triode Q2 is connected with the primary coil of the transformer 5 and the PWM main control module 8 after being connected with the diode D1, the C pole of the triode Q2 is also connected with the voltage stabilizing chip 931, the E pole of the triode Q2 is connected with the PWM main control module 8 after being connected with the diode D2, a charging capacitor CE1 is connected between the diode D2 and the voltage stabilizing diode ZD1, the charging capacitor CE1 is also connected with a starting resistor R18 and a starting resistor R17, the starting resistor R17 is connected with an input filtering module, the voltage stabilizing chip 931 is connected with the segment pulling dimming module 91, when the rectifying module 3 and the input filtering module 4 convert AC voltage into DC voltage and flow to the primary and voltage stabilizing power supply module 93, the starting resistor R18 and the starting resistor R17 in the voltage-stabilizing power supply module 93 charge the charging capacitor CE1 through the starting resistor R18 and the starting resistor R17, and when the required starting threshold value of the PWM main control chip is reached, the MOS transistor Q1 is controlled to be turned on, so that the whole circuit starts to work.
The EMI module 2 includes a fuse 21 connected to the AC input terminal 1, a first common mode inductor 22 connected to the fuse 21, a second common mode inductor 23 connected to the fuse 21, and an RC loop 24, and the RC loop 24 is connected to the rectifying module 3.
The rectifying module 3 comprises a rectifying bridge chip; the input filter module 4 comprises a capacitor CBB2 and a capacitor CBB1 which are connected in parallel with each other, and a RL loop 41 connected between the capacitor CBB2 and the capacitor CBB 1.
The output filter module 6 comprises an electrolytic capacitor EC2, a resistor R23, an electrolytic capacitor EC3, a resistor R24, a diode D7 connected with the electrolytic capacitor EC2 in parallel, a diode D8 connected to two ends of the diode D7 in parallel, a resistor R22 and a capacitor C7 connected to two ends of the diode D7 in parallel, and a resistor R21 connected to two ends of the resistor R22 in parallel, wherein the resistor R21 is connected with the transformer 5, and the resistor R24 is connected with the DC output terminal 7.
The opto-coupled feedback module 94 includes an opto-electric coupler.
To sum up, the utility model discloses during operation, this AC input 1 contacts AC voltage, carries out the noise in filtering electric wire netting and the power through EMI module 2, and rectifier module 3 and input filter module 4 convert AC voltage into DC voltage, and flow to transformer elementary and steady voltage power supply module 93, and when steady voltage power supply module 93 was for PWM main control module 8, the power supply of division segmentation dimming module 91 and knob switch dimming module 92, whole circuit began to work; the brightness dial switch 912 and the power dial switch 913 are respectively used for adjusting brightness (100%, 60%, 50%, 40%) and power (40W, 35W, 30W, 25W), and when the dial switch is adjusted to 60% brightness, the wall switch controls the brightness of 100% and 60%. Namely, the wall switch is turned on once by 100 percent, the wall switch is turned on again after being turned off by 60 percent of brightness, and the brightness of other sections can be realized by analogy; when switching power supply, optoelectronic coupling feedback module 94 receives voltage, give 8 high levels of PWM host system through optoelectronic coupling feedback module 94, lead to 8 internal program of PWM host system, give PWM main control chip's a signal of PWM foot among the PWM host system 8, control the output of whole voltage electric current, thereby reach the requirement of on-off regulation luminance, can adjust luminance through control knob switch module 92, increase a mode of adjusting luminance with this, it is very convenient to use, the order the utility model discloses extremely strong market competition has.
Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. The utility model provides a draw code segmentation dimmer circuit, its including AC input (1) that links together in proper order, EMI module (2), rectifier module (3), input filter module (4), transformer (5), output filter module (6), DC output (7) and with this transformer (5), PWM main control module (8) of output filter module (6) electric connection, LED lamp array module is connected in this DC output (7), wall switch, its characterized in that is connected in this AC input (1): the code-pulling section dimming circuit also comprises a code-pulling section dimming module (91), a knob switch dimming module (92) and a voltage-stabilizing power supply module (93), the voltage-stabilizing power supply module (93) is connected with the input filter module (4), the primary coil of the transformer (5) and the code-extracting section light-modulating module (91), the knob switch dimming module (92) is connected with the PWM main control module (8) through a photoelectric coupling feedback module (94), the code-pulling section light-adjusting module (91) comprises a dial switch control chip (911), a brightness dial switch (912) and a power dial switch (913) which are connected with the dial switch control chip (911), the brightness dial switch (912) and the power dial switch (913) are connected with each other, the power dial switch (913) is connected with the current limiting resistor module (914) and then connected with the PWM main control module (8), the dial switch control chip (911) is connected with the PWM main control module (8).
2. The code division multiple section dimming circuit of claim 1, wherein: the knob switch dimming module (92) comprises a knob switch control chip (921) and a knob switch (922) connected with the knob switch control chip (921), and the knob switch control chip (921) is connected with the photoelectric coupling feedback module (94).
3. The code division multiple section dimming circuit of claim 1, wherein: the current limiting resistance module (914) comprises a plurality of current limiting resistance modules which are connected in parallel.
4. The code division multiple access dimming circuit of any one of claims 1-3, wherein: the voltage stabilizing power supply module (93) comprises a triode Q2, a voltage stabilizing chip (931), a diode D2, a diode D1 and a voltage stabilizing diode ZD1, wherein the B pole of the triode Q2 is connected with the voltage stabilizing diode ZD1, the C pole of the triode Q2 is connected with the primary coil of the transformer (5) and the PWM main control module (8) after the diode D1, the C pole of the triode Q2 is also connected with the voltage stabilizing chip (931), the E pole of the triode Q2 is connected with the PWM main control module (8) after the diode D2, a charging capacitor CE1 is connected between the diode D2 and the voltage stabilizing diode ZD1, the charging capacitor CE1 is also connected with a starting resistor R18 and a starting resistor R17, the starting resistor R17 is connected with an input filtering module, and the voltage stabilizing chip (931) is connected with the code pulling section light adjusting module (91).
5. The code division multiple access dimming circuit of claim 4, wherein: the EMI module (2) comprises a fuse (21) connected with the AC input end (1), a first common mode inductor (22) connected with the fuse (21), a second common mode inductor (23) connected with the fuse (21) and an RC loop (24), and the RC loop (24) is connected with the rectifying module (3).
6. The code division multiple access dimming circuit of claim 4, wherein: the rectifying module (3) comprises a rectifying bridge chip; the input filter module (4) comprises a capacitor CBB2 and a capacitor CBB1 which are connected in parallel with each other, and an RL loop (41) connected between the capacitor CBB2 and the capacitor CBB 1.
7. The code division multiple access dimming circuit of claim 4, wherein: the output filtering module (6) comprises an electrolytic capacitor EC2, a resistor R23, an electrolytic capacitor EC3, a resistor R24, a diode D7 connected with the electrolytic capacitor EC2, a diode D8 connected with two ends of the diode D7 in parallel, a resistor R22 and a capacitor C7 connected with two ends of the diode D7 in parallel, and a resistor R21 connected with two ends of the resistor R22 in parallel, wherein the resistor R21 is connected with the transformer (5), and the resistor R24 is connected with the DC output end (7).
8. The code division multiple access dimming circuit of claim 4, wherein: the optoelectronic coupling feedback module (94) comprises an optoelectronic coupler.
9. The code division multiple access dimming circuit of any one of claims 1-3, wherein: the PWM main control module (8) comprises a PWM main control chip (81) and an MOS tube Q1 which is connected with the PWM main control chip (81) and used as an electronic switch, and the MOS tube Q1 is connected with the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922042323.8U CN211297064U (en) | 2019-11-21 | 2019-11-21 | Code-pulling segmented dimming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922042323.8U CN211297064U (en) | 2019-11-21 | 2019-11-21 | Code-pulling segmented dimming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211297064U true CN211297064U (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922042323.8U Active CN211297064U (en) | 2019-11-21 | 2019-11-21 | Code-pulling segmented dimming circuit |
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| Country | Link |
|---|---|
| CN (1) | CN211297064U (en) |
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- 2019-11-21 CN CN201922042323.8U patent/CN211297064U/en active Active
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| CP02 | Change in the address of a patent holder |
Address after: Building 6, Zhongtang Tian'an Digital City, No. 88, Jinyuan Road, Zhongtang Town, Dongguan City, Guangdong Province, 523000 Patentee after: DONGGUAN PAN AMERICAN ELECTRONICS Co.,Ltd. Address before: 523000 No.31, wujiayong section, Beiwang Road, Zhongtang Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN PAN AMERICAN ELECTRONICS Co.,Ltd. |
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