CN106231732B - The LED illumination circuit of nonpolarity direct current input wide-voltage constant power - Google Patents
The LED illumination circuit of nonpolarity direct current input wide-voltage constant power Download PDFInfo
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- CN106231732B CN106231732B CN201610789244.1A CN201610789244A CN106231732B CN 106231732 B CN106231732 B CN 106231732B CN 201610789244 A CN201610789244 A CN 201610789244A CN 106231732 B CN106231732 B CN 106231732B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
Abstract
The invention discloses the LED illumination circuits that a kind of nonpolarity direct current inputs wide-voltage constant power, are related to LED illumination field of circuit technology.The present invention includes microprocessor U1, and microprocessor U1 is connected with integrated transporting discharging amplifying circuit, anti-circnit NOT and diode (LED)；Integrated transporting discharging amplifying circuit includes operational amplifier U2, resistance R3, R4, R7；Anti- circnit NOT includes metal-oxide-semiconductor Q1, Q2, Q3, Q4 and four zener diodes D4, D5, D6, D7 of 4 P-channels；Power supply alternately flow to metal-oxide-semiconductor Q1, Q4 and Q2, and the stable states of Q3 formation two conductings, two cut-offs supply electricity to 2 feet of microprocessor U1, substantially will not off-energy because MOS conducting resistances are far smaller than silicon diode.Resistance R7 is to examine leakage resistance, when on current flowing resistance R7, forms pressure drop, by being compared the amplification for realizing electric current with setting value to realize invariable power function.
Description
Technical field
The present invention relates to a kind of LED illumination field of circuit technology, specifically a kind of nonpolarity direct current inputs wide-voltage constant
The LED illumination circuit of power.
Background technology
LED illumination is under the raised once again background of worry of Present Global energy shortage, and energy saving be our in futures
The important problem faced, in lighting area, the application of LED luminous products is just attract the sight of common people, and LED is as a kind of new
The green light source product of type, necessarily the trend of future development, 21st century will be into using LED as the novel illumination light of representative
The source epoch.LED is referred to as forth generation lighting source or green light source, has the characteristics that energy-saving and environmental protection, long lifespan, small, can
To be widely used in the fields such as various instructions, display, decoration, backlight, general lighting and urban landscape.In recent years, in the world
Some developed countries expand fierce technology contest around the development of LED.
Due to there is the limitation of forward conduction voltage magnitude when LED body works, if input voltage is higher or polarity connection
Antipole easy burn-out LED, whether the range of safety or input voltage is all received and is greatly limited such case, especially
It is to install to be easy to power supply reversed or using the range for not meeting input voltage when wiring when End-Customer, this lamps and lanterns
Drawback leaks.
Invention content
In view of the above-mentioned drawbacks of the prior art, the present invention provides a kind of nonpolarity direct current input wide-voltage constant power
LED illumination circuit is not required to the input direct-current voltage that installment work personnel separate the positive and negative anodes of input terminal and use when mounted
Range also can be wide to 4-14V, improves the diversity of the safety and power supply selection when installation.
The present invention is realized with following technical solution：A kind of LED photographs of nonpolarity direct current input wide-voltage constant power
Bright circuit, including microprocessor U1, microprocessor U1 are connected with integrated transporting discharging amplifying circuit, anti-circnit NOT and diode LE
D；
The integrated transporting discharging amplifying circuit includes operational amplifier U2, resistance R3, R4, R7；Operational amplifier U2's
2 feet are grounded by resistance R3, and 3 feet are grounded by resistance R7, and resistance R4 is connected in parallel between 1 foot and 2 feet；
The anti-circnit NOT include 4 P-channels metal-oxide-semiconductor Q1, Q2, Q3, Q4 and four two poles of voltage stabilizing
Pipe D4, D5, D6, D7；The cathode of the grid connection zener diode D4 of metal-oxide-semiconductor Q1 and one end of resistance R8, electricity
One end, the source electrode of metal-oxide-semiconductor Q2 and the source electrode of metal-oxide-semiconductor Q4 of the other end connection resistance R9 of R8 are hindered, resistance R9's
The other end connects the grid of metal-oxide-semiconductor Q3 and the anode of zener diode D6；The grid of metal-oxide-semiconductor Q2 connects voltage stabilizing
The cathode of diode D5 and one end of resistance R10, one end of the other end connection resistance R11 of resistance R10, metal-oxide-semiconductor Q1
Source electrode and metal-oxide-semiconductor Q3 source electrode, two pole of grid and voltage stabilizing of the other end connection metal-oxide-semiconductor Q4 of resistance R11
The anode of pipe D7；The leakage of the anode and metal-oxide-semiconductor Q1, Q2 of the anode connection zener diode D5 of zener diode D4
Pole；The drain electrode of the cathode and metal-oxide-semiconductor Q1, Q2 of the cathode connection zener diode D7 of zener diode D6；
One capacitance C6 of parallel connection between 8 feet and 4 feet of microprocessor U1；6 feet of microprocessor U1 connect one end of capacitance C3, electricity
The other end for holding C3 is grounded by resistance R2；One end of the 3 foot connecting resistance J1 of microprocessor U1, another termination capacitor of resistance J1
One end of C2 and one end of energy storage inductor L1,1 foot of another termination microprocessor U1 of capacitance C2, energy storage inductor L1's is another
One end connects one end of the anode of capacitance C5, the anode of capacitance C7 and capacitance C9 respectively, and the cathode of capacitance C5 is separately connected
5 feet of microprocessor U1 and 1 foot of operational amplifier U2, the other end ground connection of capacitance C9, the cathode ground connection of capacitance C7；Micro- place
2 feet for managing device U1 connect the cathode of the cathode of capacitance C1, one end of resistance R1, the cathode of capacitance C11 and zener diode D6,
The plus earth of capacitance C1, the other end of resistance R1 are connect by 7 feet of resistance J2 connection microprocessors U1, the anode of capacitance C11
Ground；
The anode of the anode connection capacitance C7 of diode (LED), the cathode of diode (LED) pass through concatenated resistance
J3, J5 connect resistance R7.
Preferably, the microprocessor U1 uses AP6502 type microcontroller micro-chip processors.
Preferably, the operational amplifier U2 uses LM258 type integrated computation amplification chips.
Beneficial effects of the present invention：It is a kind of using integrated operational amplifier circuit, the anti-reverse structures of microprocessor U1, MOS
Full-featured circuit avoids the maloperations such as reverse polarity connection when worker's installation, saves working hour, improves efficiency.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the utility model.
Specific implementation mode
As shown in Figure 1, a kind of LED illumination circuit of nonpolarity direct current input wide-voltage constant power, including microprocessor
U1, microprocessor U1 are connected with integrated transporting discharging amplifying circuit, anti-circnit NOT and diode (LED).
The integrated transporting discharging amplifying circuit includes operational amplifier U2, resistance R3, R4, R7；Operational amplifier U2's
2 feet are grounded by resistance R3, and 3 feet are grounded by resistance R7, and resistance R4 is connected in parallel between 1 foot and 2 feet；
The anti-circnit NOT include 4 P-channels metal-oxide-semiconductor Q1, Q2, Q3, Q4 and four two poles of voltage stabilizing
Pipe D4, D5, D6, D7；The cathode of the grid connection zener diode D4 of metal-oxide-semiconductor Q1 and one end of resistance R8, electricity
One end, the source electrode of metal-oxide-semiconductor Q2 and the source electrode of metal-oxide-semiconductor Q4 of the other end connection resistance R9 of R8 are hindered, resistance R9's
The other end connects the grid of metal-oxide-semiconductor Q3 and the anode of zener diode D6；The grid of metal-oxide-semiconductor Q2 connects voltage stabilizing
The cathode of diode D5 and one end of resistance R10, one end of the other end connection resistance R11 of resistance R10, metal-oxide-semiconductor Q1
Source electrode and metal-oxide-semiconductor Q3 source electrode, two pole of grid and voltage stabilizing of the other end connection metal-oxide-semiconductor Q4 of resistance R11
The anode of pipe D7；The leakage of the anode and metal-oxide-semiconductor Q1, Q2 of the anode connection zener diode D5 of zener diode D4
Pole；The drain electrode of the cathode and metal-oxide-semiconductor Q1, Q2 of the cathode connection zener diode D7 of zener diode D6；
One capacitance C6 of parallel connection between 8 feet and 4 feet of microprocessor U1；6 feet of microprocessor U1 connect one end of capacitance C3, electricity
The other end for holding C3 is grounded by resistance R2；One end of the 3 foot connecting resistance J1 of microprocessor U1, another termination capacitor of resistance J1
One end of C2 and one end of energy storage inductor L1,1 foot of another termination microprocessor U1 of capacitance C2, energy storage inductor L1's is another
One end connects one end of the anode of capacitance C5, the anode of capacitance C7 and capacitance C9 respectively, and the cathode of capacitance C5 is separately connected
5 feet of microprocessor U1 and 1 foot of operational amplifier U2, the other end ground connection of capacitance C9, the cathode ground connection of capacitance C7；Micro- place
2 feet for managing device U1 connect the cathode of the cathode of capacitance C1, one end of resistance R1, the cathode of capacitance C11 and zener diode D6,
The plus earth of capacitance C1, the other end of resistance R1 are connect by 7 feet of resistance J2 connection microprocessors U1, the anode of capacitance C11
Ground；
The anode of the anode connection capacitance C7 of diode (LED), the cathode of diode (LED) pass through concatenated resistance
J3, J5 connect resistance R7.
Assuming that positive 3 foot of 2 foot of the ends P1 is negative because metal-oxide-semiconductor is equivalent to bridge heap, following low-voltage, above below high voltage
Low-voltage, then lower right corner Nmos grids obtain positive pressure conducting, similarly, above high voltage, then upper left corner PMOS grids obtain
Negative pressure is connected, and finally, output voltage is equal to input voltage, and internal resistance is equal to P pipe RdsON+N pipes RdsON hypothesis and does charging polarity turn
It changes.Resistance R10, R11 are separately connected the gate driving foot of metal-oxide-semiconductor Q2, Q4, are equally used for keeping metal-oxide-semiconductor conducting realization whole
Function is flowed, the stable state to prevent 4 metal-oxide-semiconductors from cannot form 2 conductings, 2 cut-offs consumes energy, so being added 2 four
A zener diode, after the power is turned on P1 foots voltage will be above right end P3 foot voltages, balance is destroyed, and metal-oxide-semiconductor tends towards stability, this electricity
Road can be used for replacing common rectifier bridge, substantially will not off-energy because metal-oxide-semiconductor conducting resistance is far smaller than silicon diode
It will not generate heat；
Microprocessor U1 uses AP6502 type microcontroller micro-chip processors, 2 feet of microprocessor U1 to connect direct current input electricity
Road, input range meet Width funtion input condition in 4-23V, and 8 feet connect capacitance C6, and 3 foot output pins meet energy storage inductor L1
It is used for smooth output voltage with capacitance C2,5 feet feedback foot to connect 1 foot of operational amplifier U2, and the external timing capacitor resistance of 6 feet is used
Frequency is shaken in control.Operational amplifier U2 uses LM258 type integrated computation amplification chips.
The course of work：Power supply circuit is alternately flow to metal-oxide-semiconductor Q1, Q4 and Q2 by power supply Header3, and Q3 formation two is led
The stable state of logical two cut-offs, supplies electricity to 2 feet of microprocessor U1, this circuit can be used for replacing the anti-reverse electricity of common diode
It road substantially will not off-energy because MOS conducting resistances are far smaller than silicon diode.Resistance R7 is inspection leakage resistance, electric current
When flowing through on resistance R7, pressure drop, the electric current flowed through by can be obtained LED after calculating, by being compared with setting value are formed
Compared with realize electric current amplification to realize invariable power function.
Claims (1)
1. a kind of LED illumination circuit of nonpolarity direct current input wide-voltage constant power, including microprocessor U1, microprocessor
U1 is connected with integrated transporting discharging amplifying circuit, anti-circnit NOT and diode (LED)；It is characterized in that：
The integrated transporting discharging amplifying circuit includes operational amplifier U2, resistance R3, R4, R7；2 feet of operational amplifier U2
It is grounded by resistance R3,3 feet are grounded by resistance R7, and resistance R4 is connected in parallel between 1 foot and 2 feet；
The anti-circnit NOT includes metal-oxide-semiconductor Q1, Q2, Q3, Q4 and four zener diode D of 4 P-channels
4, D5, D6, D7；The cathode of the grid connection zener diode D4 of metal-oxide-semiconductor Q1 and one end of resistance R8, resistance R8
Other end connection resistance R9 one end, the source electrode of metal-oxide-semiconductor Q2 and the source electrode of metal-oxide-semiconductor Q4, resistance R9's is another
The grid of end connection metal-oxide-semiconductor Q3 and the anode of zener diode D6；Two pole of grid connection voltage stabilizing of metal-oxide-semiconductor Q2
The cathode of pipe D5 and one end of resistance R10, one end of the other end connection resistance R11 of resistance R10, the source of metal-oxide-semiconductor Q1
The source electrode of pole and metal-oxide-semiconductor Q3, the grid and zener diode D7 of the other end connection metal-oxide-semiconductor Q4 of resistance R11
Anode；The drain electrode of the anode and metal-oxide-semiconductor Q1, Q2 of the anode connection zener diode D5 of zener diode D4；Surely
Press the drain electrode of the cathode and metal-oxide-semiconductor Q1, Q2 of the cathode connection zener diode D7 of diode D6；
One capacitance C6 of parallel connection between 8 feet and 4 feet of microprocessor U1；6 feet of microprocessor U1 meet one end of capacitance C3, capacitance C3
The other end be grounded by resistance R2；One end of the 3 foot connecting resistance J1 of microprocessor U1, another termination capacitor C2's of resistance J1
One end and one end of energy storage inductor L1,1 foot of another termination microprocessor U1 of capacitance C2, the other end of energy storage inductor L1
One end of the anode of capacitance C5, the anode of capacitance C7 and capacitance C9 is connect respectively, and the cathode of capacitance C5 is separately connected micro- place
Manage 5 feet of device U1 and 1 foot of operational amplifier U2, the other end ground connection of capacitance C9, the cathode ground connection of capacitance C7；Microprocessor
The cathode of the 2 feet connection capacitance C1 of U1, one end of resistance R1, the cathode of capacitance C11 and zener diode D6 cathode, capacitance
The other end of the plus earth of C1, resistance R1 passes through 7 feet of resistance J2 connection microprocessors U1, the plus earth of capacitance C11；
The anode of the anode connection capacitance C7 of diode (LED), the cathode of diode (LED) pass through concatenated resistance J3, J5
Connect resistance R7；
The microprocessor U1 uses AP6502 type microcontroller micro-chip processors；
The operational amplifier U2 uses LM258 type integrated computation amplification chips.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610789244.1A CN106231732B (en) | 2016-08-31 | 2016-08-31 | The LED illumination circuit of nonpolarity direct current input wide-voltage constant power |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610789244.1A CN106231732B (en) | 2016-08-31 | 2016-08-31 | The LED illumination circuit of nonpolarity direct current input wide-voltage constant power |
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| CN106231732A CN106231732A (en) | 2016-12-14 |
| CN106231732B true CN106231732B (en) | 2018-10-19 |
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| CN201610789244.1A Active CN106231732B (en) | 2016-08-31 | 2016-08-31 | The LED illumination circuit of nonpolarity direct current input wide-voltage constant power |
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| CN109449916A (en) * | 2018-12-26 | 2019-03-08 | 深圳中创艾宝技术有限公司 | A kind of circuit for realizing the compatible positive-negative connected of dc power interface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206024171U (en) * | 2016-08-31 | 2017-03-15 | 徐州爱特普电子有限公司 | A kind of nonpolarity direct current is input into the LED illumination circuit of wide-voltage constant power |
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| EP0342814B1 (en) * | 1988-05-20 | 1995-02-08 | Mitsubishi Denki Kabushiki Kaisha | Mos integrated circuit for driving light-emitting diodes |
| CN201256290Y (en) * | 2008-08-04 | 2009-06-10 | 研祥智能科技股份有限公司 | Protection circuit for suppressing surge current and preventing input voltage reverse connection |
| CN102711341B (en) * | 2012-06-26 | 2014-06-18 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206024171U (en) * | 2016-08-31 | 2017-03-15 | 徐州爱特普电子有限公司 | A kind of nonpolarity direct current is input into the LED illumination circuit of wide-voltage constant power |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: LED lighting circuit with wide voltage and constant power without polarity DC input Effective date of registration: 20191021 Granted publication date: 20181019 Pledgee: Xuzhou Huaichang Investment Co., Ltd. Pledgor: Mortopl Electronics Co., Ltd. is liked in Xuzhou Registration number: Y2019320000211 |
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Date of cancellation: 20211104 Granted publication date: 20181019 Pledgee: Xuzhou Huaichang Investment Co.,Ltd. Pledgor: XUZHOU ATP ELECTRONICS CO.,LTD. Registration number: Y2019320000211 |
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