CN111148303A - Province control MOS manages three-section dimmer circuit - Google Patents
Province control MOS manages three-section dimmer circuit Download PDFInfo
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- CN111148303A CN111148303A CN201911310207.8A CN201911310207A CN111148303A CN 111148303 A CN111148303 A CN 111148303A CN 201911310207 A CN201911310207 A CN 201911310207A CN 111148303 A CN111148303 A CN 111148303A
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- 239000003990 capacitor Substances 0.000 claims abstract description 26
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- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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Abstract
The invention provides a provincial control MOS tube three-section dimming circuit, which comprises a zero line gear, a first live wire gear, a second live wire gear, a rectifier bridge, a control chip, a first voltage stabilizing circuit and a second voltage stabilizing circuit, wherein the zero line gear is connected with the first live wire gear; the first voltage stabilizing circuit comprises a first MOS tube, a first resistor, a first capacitor and a first voltage stabilizing diode; the second voltage stabilizing circuit comprises a second MOS tube, a second capacitor, a fifth resistor and a second voltage stabilizing diode; by the technical scheme, three-section dimming of the LED lamp assembly can be realized, and the LED lamp assembly is simple and convenient to operate.
Description
Technical Field
The invention relates to the field of illumination, in particular to a three-section dimming circuit of an provincial control MOS tube.
Background
When the LED lamp is dimmed, the lamp assembly is often required to have a plurality of dimming gears, when the light gears are adjusted through the control chip, the light adjustment is realized by setting the control mode of the control chip, the dimming mode is complex to operate, and the product cost is high.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a three-section dimming circuit of an provincial control MOS tube, which realizes three-section dimming of an LED lamp assembly and is simple and convenient to operate.
In order to solve the technical problem, the invention provides a three-section dimming circuit of an provincial control MOS tube, which comprises a zero line gear, a first live wire gear, a second live wire gear, a rectifier bridge, a control chip, a first voltage stabilizing circuit and a second voltage stabilizing circuit; the first voltage stabilizing circuit comprises a first MOS tube, a first resistor, a first capacitor and a first voltage stabilizing diode; the first live wire gear is connected with the anode of a first diode, the cathode of the first diode is connected with one end of a second resistor, the other end of the second resistor is connected with the cathode of a first voltage stabilizing diode, one end of a first capacitor is connected with the cathode of the first voltage stabilizing diode and one end of a first resistor, and the other end of the first capacitor, the other end of the first resistor and the anode of the first voltage stabilizing diode are all grounded; the grid electrode of the first MOS tube is connected to one end of the first resistor, which is connected with the first capacitor, the source electrode of the first MOS tube is grounded, the drain electrode of the first MOS tube is connected with one end of a third resistor, the other end of the third resistor is connected with one end of a fourth resistor and the control chip, and the other end of the fourth resistor is grounded;
the second voltage stabilizing circuit comprises a second MOS tube, a second capacitor, a fifth resistor and a second voltage stabilizing diode; the second live wire gear is connected with the anode of a second diode, the cathode of the second diode is connected with one end of a sixth resistor, the other end of the sixth resistor is connected with the cathode of the second voltage stabilizing diode, one end of a second capacitor is connected with the cathode of the second voltage stabilizing diode and one end of a fifth resistor, and the other end of the second capacitor, the other end of the fifth resistor and the anode of the second voltage stabilizing diode are all grounded; the end, connected with the second capacitor, of the fifth resistor is further connected with a grid electrode of the second MOS tube, a source electrode of the second MOS tube is grounded, a drain electrode of the second MOS tube is connected with one end of a seventh resistor, the other end of the seventh resistor is connected with one end, not connected with the drain electrode of the first MOS tube, of the third resistor, and the other end of the seventh resistor is further connected with one end of the fourth resistor and a control chip;
the zero line gear is connected with the rectifying anode output end of the rectifying bridge, the first live wire gear and the second live wire gear are both connected with the rectifying cathode output end of the rectifying bridge, one alternating current output end of the rectifying bridge is grounded, the output end of the other end of the rectifying bridge is connected with the cathode of the LED assembly, and the control chip is also connected with the anode of the LED assembly;
the third resistor, the fourth resistor and the seventh resistor are different in resistance value;
when the first live wire gear and the zero line gear are connected with commercial power, the first MOS tube is conducted, and the third resistor and the fourth resistor are connected in parallel; when the second live wire gear and the zero line gear are connected with commercial power, the second MOS tube is conducted, and the seventh resistor and the fourth resistor are connected in parallel; when the first live wire gear, the second live wire gear and the zero line gear are all connected to the commercial power, the third resistor, the fourth resistor and the seventh resistor are connected in parallel.
In a preferred embodiment, the resistance of the fourth resistor is greater than the resistance of the third resistor, and the resistance of the third resistor is greater than the resistance of the seventh resistor.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the invention relates to a provincial control MOS tube three-section dimming circuit, which is characterized in that a first MOS tube and a second MOS tube are conducted through a zero line gear, a first live wire gear and a second live wire gear in a combined mode to control COMP level adjustment Ton time to achieve a stepping three-section dimming function to control output current, a third resistor, a fourth resistor and a seventh resistor are controlled to be connected in parallel in a combined mode, resistance values of the third resistor, the fourth resistor and the seventh resistor are changed to adjust output current control power in a stepping mode, and a three-stage dimming function is achieved. Therefore, the total resistance value is changed through the resistance value of the resistor so as to adjust the power of the LED, the setting is simple, the operation is simple, the production cost of the product can be effectively reduced, and the market competitiveness of the product is improved.
Drawings
Fig. 1 is a schematic circuit diagram of a three-segment dimming circuit of a power-saving control MOS transistor according to a preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Referring to fig. 1, the provincial control three-section light modulation circuit of the MOS transistor comprises a zero line gear N, a first live wire gear L1, a second live wire gear L2, a rectifier bridge, a control chip U1, a first voltage stabilizing circuit and a second voltage stabilizing circuit; the first voltage stabilizing circuit comprises a first MOS transistor Q1, a first resistor R12, a first capacitor C5 and a first voltage stabilizing diode Z2; the first live wire gear L1 is connected with the anode of a first diode D4, the cathode of the first diode D4 is connected with one end of a second resistor R11, the other end of the second resistor R11 is connected with the cathode of a first voltage-stabilizing diode Z2, one end of a first capacitor C5 is connected with the cathode of the first voltage-stabilizing diode Z2 and one end of a first resistor R12, and the other end of a first capacitor C5, the other end of the first resistor R12 and the anode of the first voltage-stabilizing diode Z2 are all grounded; the first resistor R12 and the first capacitor C5 are connected at one end, and the gate of the first MOS transistor Q1 is further connected at the other end, the source of the first MOS transistor Q1 is grounded, the drain of the first MOS transistor Q1 is connected with one end of a third resistor R6, the other end of the third resistor R6 is connected with one end of a fourth resistor R5 and the control chip U1, and the other end of the fourth resistor R5 is grounded;
specifically, the second voltage stabilizing circuit comprises a second MOS transistor Q2, a second capacitor C4, a fifth resistor R2 and a second voltage stabilizing diode Z1; the second live wire gear L2 is connected to the anode of a second diode D3, the cathode of the second diode D3 is connected to one end of a sixth resistor R10, the other end of the sixth resistor R10 is connected to the cathode of the second zener diode Z1, one end of a second capacitor C4 is connected to the cathode of the second zener diode Z1 and one end of a fifth resistor R2, and the other end of the second capacitor C4, the other end of the fifth resistor R2, and the anode of the second zener diode Z1 are all grounded; the end of the fifth resistor R2 connected to the second capacitor C4 is further connected to the gate of the second MOS transistor Q2, the source of the second MOS transistor Q2 is grounded, the drain of the second MOS transistor Q2 is connected to one end of a seventh resistor R7, the other end of the seventh resistor R7 is connected to the end of the third resistor R6 not connected to the drain of the first MOS transistor Q1, and the other end of the seventh resistor R7 is further connected to one end of the fourth resistor R5 and the control chip U1;
specifically, the zero line gear N is connected to a rectifying positive electrode output end of the rectifying bridge, the first live wire gear L1 and the second live wire gear L2 are both connected to a rectifying negative electrode output end of the rectifying bridge, one alternating current output end of the rectifying bridge is grounded, the output end of the other end of the rectifying bridge is connected to a negative electrode of the LED assembly, and the control chip U1 is further connected to a positive electrode of the LED assembly;
the third resistor R6, the fourth resistor R5 and the seventh resistor R7 have different resistances; in this embodiment, the resistance of the fourth resistor R5 is greater than the resistance of the third resistor R6, and the resistance of the third resistor R6 is greater than the resistance of the seventh resistor R7.
When the first live wire gear L1 and the zero wire gear N are connected to the mains supply, the first MOS tube Q1 is conducted, the third resistor R6 is connected in parallel with the fourth resistor R5, and at the moment, the LED lamp assembly is in a power middle gear; when the second live wire gear L2 and the zero wire gear N are connected to the mains supply, the second MOS tube Q2 is conducted, the seventh resistor R7 is connected in parallel with the fourth resistor R5, and at the moment, the LED lamp assembly is in a low power gear; when the first live wire gear L1, the second live wire gear L2 and the zero line gear N are all connected to the mains supply, the third resistor R6, the fourth resistor R5 and the seventh resistor R7 are connected in parallel, and at the moment, the LED lamp assembly is at a high power level.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (2)
1. A provincial control MOS tube three-section dimming circuit is characterized by comprising a zero line gear, a first live wire gear, a second live wire gear, a rectifier bridge, a control chip, a first voltage stabilizing circuit and a second voltage stabilizing circuit; the first voltage stabilizing circuit comprises a first MOS tube, a first resistor, a first capacitor and a first voltage stabilizing diode; the first live wire gear is connected with the anode of a first diode, the cathode of the first diode is connected with one end of a second resistor, the other end of the second resistor is connected with the cathode of a first voltage stabilizing diode, one end of a first capacitor is connected with the cathode of the first voltage stabilizing diode and one end of a first resistor, and the other end of the first capacitor, the other end of the first resistor and the anode of the first voltage stabilizing diode are all grounded; the grid electrode of the first MOS tube is connected to one end of the first resistor, which is connected with the first capacitor, the source electrode of the first MOS tube is grounded, the drain electrode of the first MOS tube is connected with one end of a third resistor, the other end of the third resistor is connected with one end of a fourth resistor and the control chip, and the other end of the fourth resistor is grounded;
the second voltage stabilizing circuit comprises a second MOS tube, a second capacitor, a fifth resistor and a second voltage stabilizing diode; the second live wire gear is connected with the anode of a second diode, the cathode of the second diode is connected with one end of a sixth resistor, the other end of the sixth resistor is connected with the cathode of the second voltage stabilizing diode, one end of a second capacitor is connected with the cathode of the second voltage stabilizing diode and one end of a fifth resistor, and the other end of the second capacitor, the other end of the fifth resistor and the anode of the second voltage stabilizing diode are all grounded; the end, connected with the second capacitor, of the fifth resistor is further connected with a grid electrode of the second MOS tube, a source electrode of the second MOS tube is grounded, a drain electrode of the second MOS tube is connected with one end of a seventh resistor, the other end of the seventh resistor is connected with one end, not connected with the drain electrode of the first MOS tube, of the third resistor, and the other end of the seventh resistor is further connected with one end of the fourth resistor and a control chip;
the zero line gear is connected with the rectifying anode output end of the rectifying bridge, the first live wire gear and the second live wire gear are both connected with the rectifying cathode output end of the rectifying bridge, one alternating current output end of the rectifying bridge is grounded, the output end of the other end of the rectifying bridge is connected with the cathode of the LED assembly, and the control chip is also connected with the anode of the LED assembly;
the third resistor, the fourth resistor and the seventh resistor are different in resistance value;
when the first live wire gear and the zero line gear are connected with commercial power, the first MOS tube is conducted, and the third resistor and the fourth resistor are connected in parallel; when the second live wire gear and the zero line gear are connected with commercial power, the second MOS tube is conducted, and the seventh resistor and the fourth resistor are connected in parallel; when the first live wire gear, the second live wire gear and the zero line gear are all connected to the commercial power, the third resistor, the fourth resistor and the seventh resistor are connected in parallel.
2. The provincial control MOS tube three-segment dimming circuit as claimed in claim 1, wherein the fourth resistor has a resistance value larger than that of the third resistor, and the third resistor has a resistance value larger than that of the seventh resistor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920256462 | 2019-02-28 | ||
| CN2019202564628 | 2019-02-28 |
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| Publication Number | Publication Date |
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| CN111148303A true CN111148303A (en) | 2020-05-12 |
| CN111148303B CN111148303B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911310207.8A Active CN111148303B (en) | 2019-02-28 | 2019-12-18 | Three-section dimming circuit of provincial control MOS tube |
| CN201922282735.9U Active CN211744785U (en) | 2019-02-28 | 2019-12-18 | Province control MOS manages three-section dimmer circuit |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922282735.9U Active CN211744785U (en) | 2019-02-28 | 2019-12-18 | Province control MOS manages three-section dimmer circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113286397A (en) * | 2021-06-01 | 2021-08-20 | 上海市共进通信技术有限公司 | Intelligent circuit structure for realizing LED brightness |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111148303B (en) * | 2019-02-28 | 2024-06-04 | 厦门龙胜达照明电器有限公司 | Three-section dimming circuit of provincial control MOS tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211449A (en) * | 2016-07-22 | 2016-12-07 | 上海顿格电子贸易有限公司 | A kind of circuit of LED of three-stage dimming |
| CN205793491U (en) * | 2016-05-25 | 2016-12-07 | 新和（绍兴）绿色照明有限公司 | A kind of three section type light regulating control circuit of LED |
| EP3288340A1 (en) * | 2016-08-23 | 2018-02-28 | Unity Opto Technology Co., Ltd. | Micro dimming module |
| CN208424855U (en) * | 2018-06-29 | 2019-01-22 | 浙江阳光美加照明有限公司 | A kind of three-stage dimming control circuit of LED light |
| CN109309989A (en) * | 2018-10-15 | 2019-02-05 | 深圳市崧盛电子股份有限公司 | A kind of All-in-One dim signal processing circuit |
| CN211744785U (en) * | 2019-02-28 | 2020-10-23 | 厦门龙胜达照明电器有限公司 | Province control MOS manages three-section dimmer circuit |
-
2019
- 2019-12-18 CN CN201911310207.8A patent/CN111148303B/en active Active
- 2019-12-18 CN CN201922282735.9U patent/CN211744785U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205793491U (en) * | 2016-05-25 | 2016-12-07 | 新和（绍兴）绿色照明有限公司 | A kind of three section type light regulating control circuit of LED |
| CN106211449A (en) * | 2016-07-22 | 2016-12-07 | 上海顿格电子贸易有限公司 | A kind of circuit of LED of three-stage dimming |
| EP3288340A1 (en) * | 2016-08-23 | 2018-02-28 | Unity Opto Technology Co., Ltd. | Micro dimming module |
| CN208424855U (en) * | 2018-06-29 | 2019-01-22 | 浙江阳光美加照明有限公司 | A kind of three-stage dimming control circuit of LED light |
| CN109309989A (en) * | 2018-10-15 | 2019-02-05 | 深圳市崧盛电子股份有限公司 | A kind of All-in-One dim signal processing circuit |
| CN211744785U (en) * | 2019-02-28 | 2020-10-23 | 厦门龙胜达照明电器有限公司 | Province control MOS manages three-section dimmer circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113286397A (en) * | 2021-06-01 | 2021-08-20 | 上海市共进通信技术有限公司 | Intelligent circuit structure for realizing LED brightness |
| CN113286397B (en) * | 2021-06-01 | 2023-08-25 | 上海市共进通信技术有限公司 | Intelligent Circuit Structure for Realizing LED Brightness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111148303B (en) | 2024-06-04 |
| CN211744785U (en) | 2020-10-23 |
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