CN104780694B - A kind of LED touch dimmers constant-current driving power supply - Google Patents
A kind of LED touch dimmers constant-current driving power supply Download PDFInfo
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- CN104780694B CN104780694B CN201510222985.7A CN201510222985A CN104780694B CN 104780694 B CN104780694 B CN 104780694B CN 201510222985 A CN201510222985 A CN 201510222985A CN 104780694 B CN104780694 B CN 104780694B
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Abstract
The present invention relates to a kind of LED touch dimmers constant-current driving power supply,Including commutation diode D1,D2,D3,The rectification circuit D of D4,Filter capacitor C1,Constant-current driven chip IC1,Decoupling capacitor C2,Electric current uses resistance R4,Switch transformer B,Diode D5,Resistance R2,Electric capacity C3,Commutation diode D7,Filter capacitor C4,C5,Some light emitting diode D9 to Dn,Commutation diode D6,Resistance R9,Discharge resistance R10,Brightness adjustment control triode Q1,Triode Q2,Constant-current driven chip IC1,Touch dimmer chip IC 2,Decoupling capacitor C6,Voltage-regulator diode D8,The commutation diode D1,D2,D3,The input of the rectification circuit D of D4 is connected with power supply P,LED touch dimmers circuit construction of electric power of the invention is simple,Cost is small,It is energy-efficient.
Description
Technical field
The present invention relates to a kind of LED drive power, specially a kind of LED touch dimmers constant-current driving power supply.
Background technology
LED illumination device, as the novel illumination light source of present lighting field, than conventional incandescent streetlamp energy-saving more than 80%, tool
Many advantages, such as having energy-saving and environmental protection.Due to the particularity of LED illumination device type of drive, general LED illumination device can not be by
Light modulation, which limits LED illumination device range of application.
There is regulation LED power lighting apparatus in the market, but some control modes are excessively complicated, equipment cost
It is high.Control mode is fairly simple, and electric energy can not be fully utilized, and waste electric energy.
The content of the invention
For above-mentioned situation, it is an object of the invention to provide a kind of LED touch dimmers constant-current driving power supply, circuit structure letter
Single, easy to use, using effect is good.
Technical scheme is as follows:A kind of LED touch dimmers constant-current driving power supply, including commutation diode D1,
The rectification circuit D of D2, D3, D4, filter capacitor C1, constant-current driven chip IC1, decoupling capacitor C2, current sampling resistor R4, switch
Transformer B, diode D5, resistance R2, electric capacity C3, commutation diode D7, filter capacitor C4, C5, some light emitting diode D9 are extremely
Dn, commutation diode D6, resistance R9, discharge resistance R10, brightness adjustment control triode Q1, triode Q2, constant-current driven chip IC1,
Touch dimmer chip IC 2, decoupling capacitor C6, voltage-regulator diode D8, the rectification circuit D of described commutation diode D1, D2, D3, D4
Input be connected with power supply P, output end connection filter capacitor C1, the filter capacitor C1 simultaneously meet decoupling capacitor C2, the perseverance
One end of the connection decoupling capacitor of pin 4 C2 of stream driving chip IC1, pin 3, pin 2 and pin 1 connection decoupling capacitor C2's is another
One end, pin 5 and pin 6 connect the positive pole of diode D5 and one end of switch transformer B primary coils L1, primary coil respectively
One end of the other end connection electric capacity C3 of L1, the other end of electric capacity C3 is connected with the negative pole of diode D5, electric capacity C3 simultaneously connecting resistances
The secondary coil L2 of R2, the switch transformer B is sequentially connected in series commutation diode D7 and light emitting diode D9 to Dn, switchs transformation
The first end connection commutation diode D7 positive poles of the secondary coil L2 of device B, commutation diode D7 negative poles connect filter capacitor C5, electric discharge
One end of resistance R10, filter capacitor C5, second end of another termination secondary coil L2 of discharge resistance R10, the switch transformation
Primary coil L1 homonymies connection the dimmer L3, the dimmer L3 of device B concatenate commutation diode D6 and filter capacitor C4,
The negative pole of the commutation diode D6, the emitter stage of the positive pole connecting triode Q2 of filter capacitor C4, the collection of the triode Q2
Electrode connects the pin 1 of constant-current driven chip IC1 by resistance R5, and the current sampling resistor R4 is in parallel with resistance R5, one end
The pin 1 of constant-current driven chip IC1 is connected to, the other end is connected with the negative pole of decoupling capacitor C2, the base stage of the triode Q2
The colelctor electrode of connection brightness adjustment control triode Q1, the base stage of the brightness adjustment control triode Q1 connects touch dimmer by resistance R9
The pin 5 of chip IC 2, the emitter stage of pin 6 and pin 8 connection brightness adjustment control the triode Q1 of the touch dimmer chip IC 2,
Pin 2 is connected with pin 1 with electrode slice M, and touch sensitivity regulation resistance R8 is concatenated between pin 2 and electrode slice M, and pin 1 connects
The negative pole of decoupling capacitor C6 is connect, the voltage-regulator diode D8 is concatenated with current limliting supplying resistance R7, and the other end of resistance R7 is connected to
Between commutation diode D1 and D2, the positive pole of the positive pole connection filter capacitor C6 of voltage-regulator diode D8.
Preferably, the constant-current driven chip IC1 is chip BP9022, and the touch dimmer chip IC 2 is chip
LD753A, the touch-control regulation of circuit is sensitiveer.
Preferably, the input connection insurance RD of the power supply P, the safety and stability of holding circuit.
Preferably, the pin 4 of the constant-current driven chip IC1 is connected with supplying resistance R1, one end and the pin 4 of resistance R1
Connection, the other end is connected with the positive pole of filter capacitor C1；The external open-circuit-protection voltage-regulation resistance R3 of pin 3, the open circuit is protected
One end of shield voltage-regulation resistance R3 is connected with pin 3, and the other end is connected with the negative pole of decoupling capacitor C2, and the triode Q2 connects
It is connected to base biasing resistor R6, it is ensured that whole circuit stability operation.
LED touch dimmers constant-current driving power supply of the invention, by the dimmer L3 on switch transformer B, will dim
Voltage commutation on coil L3 passes through the voltage of pin 1 of triode Q2 de-regulations IC1 using this DC voltage into DC voltage,
Namely adjust the current value on the outer meeting resistance R4 of pin 1 of IC1.The base stage of triode Q1 is managed by touch dimmer chip IC 2
Pin 5 is controlled, and when the pin 3 of IC2 is input into human body sensing touching signals, will export corresponding control letter in the pin 5 of IC2
Number, go to control the conducting state of Q2, the corresponding output current value for changing driving power supply, the purpose for being dimmed.
This LED touch dimmer constant-current driving power supplies, with respect to other LED dimming power sources, with circuit structure is simple, cost
Small, energy-efficient the advantages of.
Brief description of the drawings
Fig. 1 circuit theory diagrams of the invention.
Specific embodiment
As shown in figure 1, a kind of LED touch dimmers constant-current driving power supply, including commutation diode D1, D2, D3, D4 rectification
Circuit D, filter capacitor C1, constant-current driven chip IC1, decoupling capacitor C2, current sampling resistor R4, switch transformer B, diode
D5, resistance R2, electric capacity C3, commutation diode D7, filter capacitor C4, C5, some light emitting diode D9 to Dn, commutation diode
D6, resistance R9, discharge resistance R10, brightness adjustment control triode Q1, triode Q2, constant-current driven chip IC1, touch dimmer chip
IC2, decoupling capacitor C6, the input connection of voltage-regulator diode D8, the rectification circuit D of described commutation diode D1, D2, D3, D4
There are power supply P, output end connection filter capacitor C1, the filter capacitor C1 simultaneously to meet decoupling capacitor C2, the constant-current driven chip IC1
The connection of pin 4 decoupling capacitor C2 one end, the other end of pin 3, pin 2 and pin 1 connection decoupling capacitor C2, the He of pin 5
Pin 6 connects the positive pole of diode D5 and one end of switch transformer B primary coils L1 respectively, and the other end of primary coil L1 connects
One end of electric capacity C3 is connect, the other end of electric capacity C3 is connected with the negative pole of diode D5, electric capacity C3 and connecting resistance R2, the switch become
The secondary coil L2 of depressor B is sequentially connected in series commutation diode D7 and light emitting diode D9 to Dn, the secondary coil of switch transformer B
The first end connection commutation diode D7 positive poles of L2, commutation diode D7 negative poles meet filter capacitor C5, the one of discharge resistance R10
End, filter capacitor C5, second end of another termination secondary coil L2 of discharge resistance R10, the primary line of the switch transformer B
Circle L1 homonymy connection dimmers L3, the dimmer L3 concatenate commutation diode D6 and filter capacitor C4, the rectification two
The negative pole of pole pipe D6, the emitter stage of the positive pole connecting triode Q2 of filter capacitor C4, the colelctor electrode of the triode Q2 is by electricity
The pin 1 of resistance R5 connection constant-current driven chips IC1, the current sampling resistor R4 is in parallel with resistance R5, and one end is connected to constant current
The pin 1 of driving chip IC1, the other end is connected with the negative pole of decoupling capacitor C2, and the triode Q2 base stages connect brightness adjustment control
The colelctor electrode of triode Q1, the base stage of the brightness adjustment control triode Q1 connects the pipe of touch dimmer chip IC 2 by resistance R9
Pin 5, the emitter stage of pin 6 and pin 8 connection brightness adjustment control the triode Q1 of the touch dimmer chip IC 2, pin 2 and pin
1 is connected with electrode slice M, and touch sensitivity regulation resistance R8, the connection decoupling capacitor of pin 1 C6 are concatenated between pin 2 and electrode slice M
Negative pole, the voltage-regulator diode D8 concatenates with current limliting supplying resistance R7, and the other end of resistance R7 is connected to commutation diode D1
Between D2, the positive pole of the positive pole connection filter capacitor C6 of voltage-regulator diode D8.
The peak power output of IC1 chips BP9022 is 5W, and the single power of D9 to Dn is 1W, and the number of D9 to Dn is 3
To 5.The pin 1 of IC2 chips LD753A, IC2 is chip power end, and pin 2 is touch sensitivity adjustable side, and pin 3 is tactile
Control signal input part, pin 4 is buffering light modulation configuration pin, and pin 5 is control signal output, and pin 6,7 is selected for dimming function
End is selected, pin 8 is chip ground end.
When circuit works, civil power 220V alternating currents are through insurance RD, then the full-wave rectification constituted through diode D1, D2, D3, D4
Circuit D rectifications, form stable DC voltage on electric capacity C1.The positive step voltage of electric capacity C1 is all the way through resistance R1 supplies IC1's
The operating voltage of pin 4, another road reaches the pin 5,6 of IC1 through the primary coil L1 of transformer B.IC1 starts working, from pin
5th, 6 output switch pulse voltages reach the primary coil L1 of transformer B.The induced voltage produced in the secondary coil L2 of B, warp
D7 rectifications C5 is filtered, and drives LED light emitting diodes D9 to Dn to light.
During this period, the induced voltage for being produced in the dimmer L3 of switch transformer B is filtered through D6 rectifications C4, in C4
Upper to form stable DC voltage, this DC voltage goes to control the 1 pin voltage of IC1 through triode Q1, resistance R5, so that controlling stream
The current value of resistance R4 is crossed, the conducting degree of Q2 is controlled by touch dimmer chip IC 2, when the namely electrode slice of pin 3 of IC2
M, when having human body sensing touching signals to be input into, will export corresponding control signal in the pin 5 of IC2, and Q1, Q1 are controlled by R9
Q2 being promoted again, Q2 is operated in corresponding conducting state, the electric current for controlling to flow through resistance R4 is corresponding current value, is thus controlled
The electric current of switch transformer B outputs processed is corresponding current value, drives LED lumination of light emitting diode, has thus obtained touch-control
The purpose of light modulation.
The pin 6,7 of IC2 is that function selects end, and non-pole light regulating and sectional dimming can be realized by different choice, and this LED is touched
The function of controlled dimming constant-current driving power supply selection is segmentation third gear light modulation.It is interrupted the input of human body touching signals when having in electrode slice M
When, constant-current driving power supply will be controlled, drive LED light emitting diodes D9 to Dn to send the different brightness of three kinds of weak, medium, strong and follow successively
Ring.
Claims (5)
1. a kind of LED touch dimmers constant-current driving power supply, it is characterised in that the rectified current including commutation diode D1, D2, D3, D4
Road D, filter capacitor C1, constant-current driven chip IC1, decoupling capacitor C2, current sampling resistor R4, switch transformer B, diode
D5, resistance R2, electric capacity C3, commutation diode D7, filter capacitor C4, C5, some light emitting diode D9 to Dn, commutation diode
D6, resistance R9, discharge resistance R10, brightness adjustment control triode Q1, triode Q2, constant-current driven chip IC1, touch dimmer chip
IC2, decoupling capacitor C6, the input connection of voltage-regulator diode D8, the rectification circuit D of described commutation diode D1, D2, D3, D4
There are power supply P, output end connection filter capacitor C1, the filter capacitor C1 simultaneously to meet decoupling capacitor C2, the constant-current driven chip IC1
It is chip BP9022, the chip of touch dimmer chip IC 2 is one end of the connection decoupling capacitor of pin 4 C2 of chip LD753A, IC1,
The other end of pin 3, pin 2 and pin 1 connection decoupling capacitor C2, pin 5 and pin 6 connect respectively the positive pole of diode D5 with
One end of switch transformer B primary coils L1, one end of the other end connection electric capacity C3 of primary coil L1, the other end of electric capacity C3
Negative pole with diode D5 is connected, and simultaneously connecting resistance R2, the secondary coil L2 of the switch transformer B are sequentially connected in series rectification to electric capacity C3
The first termination commutation diode D7 positive poles of the secondary coil L2 of diode D7 and light emitting diode D9 to Dn, switch transformer B,
Commutation diode D7 negative poles connect filter capacitor C5, one end of discharge resistance R10, filter capacitor C5, the other end of discharge resistance R10
Connect second end of secondary coil L2, the primary coil L1 homonymies connection dimmer L3 of the switch transformer B, the light modulation line
Circle L3 concatenation commutation diode D6 and filter capacitor C4, the negative pole of the commutation diode D6, the positive pole connection of filter capacitor C4
The emitter stage of triode Q2, the colelctor electrode of the triode Q2 connects the pin 1 of constant-current driven chip IC1, institute by resistance R5
State that current sampling resistor R4 is in parallel with resistance R5, one end is connected to the pin 1 of constant-current driven chip IC1, the other end and decoupling electricity
Hold the negative pole connection of C2, the colelctor electrode of the base stage connection brightness adjustment control triode Q1 of the triode Q2, the brightness adjustment control three
The base stage of pole pipe Q1 connects the pin 5 of touch dimmer chip IC 2, the He of pin 6 of the touch dimmer chip IC 2 by resistance R9
The emitter stage of the connection of pin 8 brightness adjustment control triode Q1, pin 2 is connected with pin 3 with electrode slice M, pin 2 and electrode slice M it
Between concatenate touch sensitivity regulation resistance R8, the positive pole of the connection of pin 1 decoupling capacitor C6, the voltage-regulator diode D8 is supplied with current limliting
Resistance R7 is concatenated, and the other end of resistance R7 is connected between commutation diode D1 and D2, the positive pole connection of voltage-regulator diode D8
The positive pole of filter capacitor C6.
2. LED touch dimmers constant-current driving power supply according to claim 1, it is characterised in that the input of the power supply P
Connection insurance RD.
3. LED touch dimmers constant-current driving power supply according to claim 1, it is characterised in that the constant-current driven chip
The pin 4 of IC1 is connected with supplying resistance R1, and one end of resistance R1 is connected with pin 4, and the other end connects with the positive pole of filter capacitor C1
Connect.
4. LED touch dimmers constant-current driving power supply according to claim 1, it is characterised in that the constant-current driven chip
The external open-circuit-protection voltage-regulation resistance R3 of 3 pin of IC1, one end of the open-circuit-protection voltage-regulation resistance R3 connects with pin 3
Connect, the other end is connected with the negative pole of decoupling capacitor C2.
5. LED touch dimmers constant-current driving power supply according to claim 1, it is characterised in that the triode Q2 is connected with
Base biasing resistor R6.
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| CN201510222985.7A CN104780694B (en) | 2015-05-05 | 2015-05-05 | A kind of LED touch dimmers constant-current driving power supply |
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| CN201510222985.7A CN104780694B (en) | 2015-05-05 | 2015-05-05 | A kind of LED touch dimmers constant-current driving power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010770A (en) * | 2020-01-08 | 2020-04-14 | 江西省永亮照明电器有限公司 | Lighting lamp dimming system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545783A (en) * | 2016-08-31 | 2017-03-29 | 贺叶青 | Dull and stereotyped lamp of LED of built-in drive |
| CN107666744B (en) * | 2017-11-15 | 2024-02-23 | 贵派电器股份有限公司 | LED touch stepless dimming color temperature-adjusting driving power supply and control method thereof |
| CN107896399A (en) * | 2017-11-21 | 2018-04-10 | 温犇 | A kind of LED illumination automatic control system based on mobile terminal |
| CN108738203A (en) * | 2018-07-13 | 2018-11-02 | 深圳安赋特科技有限公司 | LED power invariable power input control circuit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2666081Y (en) * | 2003-11-17 | 2004-12-22 | 江坤赐 | Touch type light modulating inductor |
| CN101795521A (en) * | 2010-04-13 | 2010-08-04 | 东莞市巨旭灯饰有限公司 | Touch-type touch control switch |
| TWI450631B (en) * | 2012-08-14 | 2014-08-21 | Univ Nat Cheng Kung | Led driver having compensation capacitor set |
| CN204598401U (en) * | 2015-05-05 | 2015-08-26 | 卫斌鹏 | A kind of LED touch dimmer power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010770A (en) * | 2020-01-08 | 2020-04-14 | 江西省永亮照明电器有限公司 | Lighting lamp dimming system |
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Denomination of invention: A constant current driving power supply for LED touch dimming Effective date of registration: 20211122 Granted publication date: 20170630 Pledgee: Zhuzhou Rural Commercial Bank Co.,Ltd. Pledgor: GOLDP ELECTRIC APPLIANCE Co.,Ltd. Registration number: Y2021980012921 |
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