CN101835308B - Led lamp control circuit and led lamp - Google Patents

Led lamp control circuit and led lamp Download PDF

Info

Publication number
CN101835308B
CN101835308B CN2010101571399A CN201010157139A CN101835308B CN 101835308 B CN101835308 B CN 101835308B CN 2010101571399 A CN2010101571399 A CN 2010101571399A CN 201010157139 A CN201010157139 A CN 201010157139A CN 101835308 B CN101835308 B CN 101835308B
Authority
CN
China
Prior art keywords
module
resistance
constant
switch
control module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010101571399A
Other languages
Chinese (zh)
Other versions
CN101835308A (en
Inventor
周明杰
王学军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Original Assignee
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oceans King Lighting Science and Technology Co Ltd, Shenzhen Oceans King Lighting Engineering Co Ltd filed Critical Oceans King Lighting Science and Technology Co Ltd
Priority to CN2010101571399A priority Critical patent/CN101835308B/en
Publication of CN101835308A publication Critical patent/CN101835308A/en
Application granted granted Critical
Publication of CN101835308B publication Critical patent/CN101835308B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention relates to an LED lamp control circuit and an LED lamp. The LED lamp control circuit comprises a power supply module, a switch control module, a constant-current driving module, a voltage reducing and stabilizing module and a microcontrol module, wherein the power supply module comprises a DC power supply, a first control switch and a second control switch, wherein the first control switch and the second control switch are switched off or switched on at the same time; the first control switch is used for controlling the on or off of the DC power supply; the second control switch generates a detection signal according to the on-off state of the first control switch; the microcontrol module generates a first or second output voltage by controlling the switch control module according to the detection signal; and the constant-current driving module generates a first or second constant current according to the first or second output voltage so that an LED light source works in a bright or dim light mode. In the invention, the DC power supply does not need to supply electricity for the microcontrol module when the LED light source is went out, thereby saving the electric quantity; and in addition, the LED light source can realize the lighting mode switching of bright or dim light.

Description

LED lamp control circuit and LED light fixture
Technical field
The present invention relates to lighting technical field, more particularly, relate to a kind of LED lamp control circuit and LED light fixture.
Background technology
Therefore advantages such as in the prior art, that led light source has is energy-efficient, the life-span is long, low pressure is controlled are widely used in the various light fixtures.The mobile LED light fixture generally adopts powered battery, in existing LED lamp control circuit, control switch is arranged between single-chip microcomputer and the ground, single-chip microcomputer produces a square-wave signal by the operate condition that detects described control switch, described square-wave signal control constant-current drive circuit produces a constant current, is the led light source power supply.Single-chip microcomputer also can be controlled described led light source and be extinguished by detecting the operate condition of described control switch.When led light source is in when extinguishing state, described single-chip microcomputer also is in detected state always, and battery is always to the single-chip microcomputer power supply, so increased meaningless electric quantity consumption.
Summary of the invention
The technical problem to be solved in the present invention is, thereby is at led light source at above-mentioned in the prior art that single-chip microcomputer also needs powered battery to bring the defective of meaningless electric quantity consumption when extinguishing state, and a kind of LED lamp control circuit and LED light fixture of saving electric weight is provided.
One of the technical solution adopted for the present invention to solve the technical problems is: construct a kind of LED lamp control circuit, link to each other with led light source, it comprises supply module, switch control module, constant-current driven module, lowering and stabilizing blood pressure module and micro control module, described supply module, switch control module and constant-current driven module link to each other successively, thereby it is the micro control module power supply that the voltage that described lowering and stabilizing blood pressure module provides supply module carries out the lowering and stabilizing blood pressure processing, described micro control module is controlled the operating state of switch control module, and described supply module comprises DC power supply;
Described supply module also comprises first control switch and second control switch, first control switch and second control switch be closed or disconnection simultaneously, first control switch is arranged between described DC power supply and the switch control module, being used for the described DC power supply of control opens or turn-offs, second control switch is arranged between described DC power supply and the micro control module, is used for producing a detection signal according to the on off state of first control switch;
Described micro control module is controlled described switch control module according to described detection signal and is produced first output voltage or second output voltage, described constant-current driven module produces one according to described first output voltage and is used for described led light source with first constant current of high light pattern work, and perhaps described constant-current driven module is used for described led light source with second constant current of low light level pattern work according to described second output voltage generation one.
Two of the technical solution adopted for the present invention to solve the technical problems is: construct a kind of LED light fixture, comprise led light source and coupled LED lamp control circuit, described LED lamp control circuit comprises supply module, switch control module, constant-current driven module, lowering and stabilizing blood pressure module and micro control module, described supply module, switch control module links to each other successively with constant-current driven module, thereby it is the micro control module power supply that the voltage that described lowering and stabilizing blood pressure module provides supply module carries out the lowering and stabilizing blood pressure processing, described micro control module is controlled the operating state of switch control module, and described supply module comprises DC power supply;
Described supply module also comprises first control switch and second control switch, first control switch and second control switch be closed or disconnection simultaneously, first control switch is arranged between described DC power supply and the switch control module, being used for the described DC power supply of control opens or turn-offs, second control switch is arranged between described DC power supply and the micro control module, is used for producing a detection signal according to the on off state of first control switch;
Described micro control module is controlled described switch control module according to described detection signal and is produced first output voltage or second output voltage, described constant-current driven module produces one according to described first output voltage and is used for described led light source with first constant current of high light pattern work, and perhaps described constant-current driven module is used for described led light source with second constant current of low light level pattern work according to described second output voltage generation one.
In the LED lamp control circuit of the present invention, described first control switch comprises first moving contact, first fixed contact, second fixed contact and the 3rd fixed contact, first moving contact is connected to DC power supply, first fixed contact is unsettled, and second fixed contact links to each other with the 3rd fixed contact and is connected to described switch control module.
In the LED lamp control circuit of the present invention, described second control switch comprises second moving contact, the 4th fixed contact, the 5th fixed contact and the 6th fixed contact, second moving contact is connected to first moving contact, the 4th fixed contact is unsettled, the 5th fixed contact is exported described detection signal, and the 6th fixed contact is unsettled.
In the LED lamp control circuit of the present invention, described LED lamp control circuit also comprises anti-reverse module, described anti-reverse module is arranged in the described supply module between first control switch and switch control module, and the output of described anti-reverse module is connected to the input of described lowering and stabilizing blood pressure module, and described anti-reverse module connects in described DC power supply and disconnects inverse time.
In the LED lamp control circuit of the present invention, described micro control module comprises single-chip microcomputer, and described constant-current driven module comprises the LED constant-current circuit, and described LED constant-current circuit comprises constant-current driven chip.
In the LED lamp control circuit of the present invention, described LED lamp control circuit also comprises the short-circuit detecting module, described short-circuit detecting module is connected between the output and micro control module of constant-current driven module, described short-circuit detecting module detects the operating current of led light source, and the output short-circuit triggering signal is to described micro control module during greater than the current threshold that arranges in it at the operating current of led light source, and described micro control module is controlled described switch control module according to described short circuit triggering signal and disconnected so that described constant-current driven module quits work.
In the LED lamp control circuit of the present invention, described short-circuit detecting module comprises the 4th diode, the 21 resistance, the 22 resistance and the 23 resistance, the negative pole of the 4th diode is connected to the positive pole of described led light source, the positive pole of the 4th diode is connected to the feeder ear of described single-chip microcomputer successively by the 23 resistance and the 22 resistance, the node of the 23 resistance and the 22 resistance is connected to an I/O end of described single-chip microcomputer by the 21 resistance.
In the LED lamp control circuit of the present invention, described LED lamp control circuit also comprises the brightness regulation module, described brightness regulation module is connected between micro control module and the constant-current driven module, described micro control module is regulated first constant current of constant-current driven module output or the size of second constant current by the brightness regulation module, to regulate the luminosity of led light source.
In the LED lamp control circuit of the present invention, described brightness regulation module comprises the 18 resistance, the 19 resistance, the 5th diode and the 8th electric capacity, the positive pole of the 5th diode is connected to another I/O end of described single-chip microcomputer successively by the 18 resistance and the 19 resistance, the negative pole of the 5th diode is connected to the feedback end of described constant-current driven chip, and the node of the 18 electric capacity and the 19 resistance is by the 8th capacity earth.
In the LED lamp control circuit of the present invention:
Described anti-reverse module comprises first switching tube, the 7th resistance and the 8th resistance, the drain electrode of first switching tube is connected to the 3rd fixed contact, the source electrode of first switching tube is successively by the 8th resistance and the 7th grounding through resistance, and the grid of first switching tube is by the 7th grounding through resistance;
Described lowering and stabilizing blood pressure module comprises low-dropout regulator, the 11 resistance, first electric capacity and second electric capacity, the input of low-dropout regulator is connected to the source electrode of first switching tube by the 11 resistance, first electric capacity is connected between the source electrode and ground of first switching tube, second electric capacity is connected between the output and ground of low-dropout regulator, and the output of low-dropout regulator is connected to the feeder ear of described single-chip microcomputer;
Described switch control module comprises the second switch pipe, the 3rd switching tube, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 9th resistance and the tenth resistance, the source electrode of second switch pipe is connected to the source electrode of first switching tube, and the source electrode of second switch pipe also is connected to the collector electrode of the 3rd switching tube successively by the tenth resistance and the 3rd resistance, the grounded emitter of the 3rd switching tube, the node of the tenth resistance and the 3rd resistance is connected to the grid of second switch pipe, the base stage of the 3rd switching tube is connected to an I/O end of described single-chip microcomputer by the 4th resistance, and the base stage of the 3rd switching tube is also by the 6th grounding through resistance, by the 9th resistance and the 5th grounding through resistance, the node of the 9th resistance and the 5th resistance is connected to another I/O end of single-chip microcomputer successively in the drain electrode of second switch pipe;
Described constant-current driven module also comprises first inductance, described LED constant-current circuit also comprises the 15 resistance, the 16 resistance, the 17 resistance, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 3rd diode and second inductance, the input of described constant-current driven chip is connected to the drain electrode of second switch pipe by first inductance, the 16 resistance is connected between the input and Enable Pin of constant-current driven chip, the 5th electric capacity is connected between the input and ground of constant-current driven chip, the output of constant-current driven chip is connected to the anode of led light source by second inductance, the feedback end of constant-current driven chip is successively by the 15 resistance and the 17 grounding through resistance, the node of the 15 resistance and the 17 resistance is connected to the negative terminal of led light source, the negative pole of the 3rd diode is connected to the output of constant-current driven chip, the plus earth of the 3rd diode, the 6th electric capacity is connected between the output and feed end of constant-current driven chip, and the 7th electric capacity is connected between the anode and ground of led light source.
Implement LED lamp control circuit of the present invention and LED light fixture, has following beneficial effect: when first control switch of this LED lamp control circuit disconnects, second control switch disconnects simultaneously, so DC power supply disconnects, led light source is in extinguishes state, this moment, micro control module was not worked, and DC power supply does not need to have saved the electric weight that consumes when led light source extinguishes state to the micro control module power supply.And, in supply module, first control switch and second control switch be closed or disconnection simultaneously, first control switch is arranged between DC power supply and the switch control module, being used for the control DC power supply opens or turn-offs, second control switch is arranged between DC power supply and the micro control module, be used for producing a detection signal according to the on off state of first control switch, micro control module produces first output voltage or second output voltage according to described detection signal control switch control module, constant-current driven module is luminous with high light pattern or low light level pattern according to described first output voltage or second output voltage control led light source, namely realized the switching of the light-emitting mode of led light source, simultaneously, when first control switch and second control switch were closed, the power of consumption was lower.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the theory diagram of LED lamp control circuit first preferred implementation of the present invention;
Fig. 2 is the theory diagram of LED lamp control circuit second preferred implementation of the present invention;
Fig. 3 is the circuit diagram of LED lamp control circuit shown in Figure 2.
Embodiment
As shown in Figure 1, be the theory diagram of LED lamp control circuit first preferred implementation of the present invention.LED lamp control circuit of the present invention links to each other with led light source, and it comprises supply module 1, switch control module 3, constant-current driven module 4, lowering and stabilizing blood pressure module 5 and micro control module 6.Wherein, supply module 1, switch control module 3 and constant-current driven module 4 link to each other successively, thereby the voltage that 5 pairs of supply modules 1 of lowering and stabilizing blood pressure module provide carries out the lowering and stabilizing blood pressure processing is micro control module 6 power supplies, and the operating state of 6 pairs of switch control modules 3 of micro control module is controlled.
Supply module 1 comprises DC power supply 101, first control switch 102 and second control switch 103.Thereby the output voltage of 5 pairs of DC power supply 101 of lowering and stabilizing blood pressure module carries out the lowering and stabilizing blood pressure processing is micro control module 6 power supplies.DC power supply 101 in the supply module 1 is constant-current driven module 4 power supplies by first control switch 102 and switch control module 3 backs successively.First control switch, 102 control DC power supply 101 are opened or are turn-offed, and second control switch 103 is arranged between DC power supply 101 and the micro control module 6, is used for producing a detection signal according to the on off state of first control switch 102.Micro control module 6 produces first output voltage or second output voltage according to described detection signal control switch control module 3.Constant-current driven module 4 produces one according to described first output voltage and is used for described led light source with first constant current of high light pattern work, perhaps, constant-current driven module 4 produces one for second constant current of described led light source with the work of low light level pattern according to described second output voltage.
As shown in Figure 2, be the theory diagram of LED lamp control circuit second preferred implementation of the present invention, be that with the difference of first preferred implementation shown in Figure 1 described LED lamp control circuit also comprises anti-reverse module 2, brightness regulation module 7 and short-circuit detecting module 8.Wherein, anti-reverse module 2 is arranged between first control switch 102 and the switch control module 3, and the output of anti-reverse module 2 is connected to the input of lowering and stabilizing blood pressure module 5, brightness regulation module 7 is connected between micro control module 6 and the constant-current driven module 4, and short-circuit detecting module 8 is connected between the output and micro control module 6 of constant-current driven module 4.
Anti-reverse module 2 disconnects when DC power supply 101 reversal connections, and DC power supply 101 is shielded.
Micro control module 6 is regulated by first constant current of 7 pairs of constant-current driven modules of brightness regulation module, 4 outputs or the size of second constant current, to regulate the luminosity of led light source.
The operating current of 8 pairs of led light sources of short-circuit detecting module detects, and the output short-circuit triggering signal is to micro control module 6 during greater than the current threshold that arranges in it at the operating current of led light source, and micro control module 6 is controlled described switch control module 3 according to described short circuit triggering signal and disconnected so that described constant-current driven module 4 quits work.
In addition, above-mentioned DC power supply 101 is battery, so supply module 1 also is included as the charging device that battery provides charging.
As shown in Figure 3, be the circuit diagram of LED lamp control circuit shown in Figure 2.First control switch 102 comprises the first moving contact S10, the first fixed contact S11, the second fixed contact S12 and the 3rd fixed contact S13, and second control switch 103 comprises the second moving contact S20, the 4th fixed contact S21, the 5th fixed contact S22 and the 6th fixed contact S23.The first moving contact S10 links to each other with the second moving contact S20 and is connected to DC power supply 101, the first fixed contact S11 is unsettled, the second fixed contact S12 links to each other with the 3rd fixed contact S13 and is connected to described switch control module 3, the 4th fixed contact S21 is unsettled, the 5th fixed contact S22 exports described detection signal, and the 6th fixed contact S23 is unsettled.First control switch 102 and the closed or disconnection simultaneously of second control switch 103, be: when the first moving contact S10 was connected to the first fixed contact S11, the second moving contact S20 was connected to the 4th fixed contact S21 simultaneously; When the first moving contact S10 was connected to the second fixed contact S12, the second moving contact S20 was connected to the 5th fixed contact S22 simultaneously; When the first moving contact S10 was connected to the 3rd fixed contact S13, the second moving contact S20 was connected to the 6th fixed contact S23 simultaneously.
In the present embodiment; DC power supply 101 adopts battery; described battery inserts by Wiring port JP2; simultaneously; supply module 1 also is included as the charging device 104 that battery provides charging, and charging device 104 inserts by Wiring port JP1, in addition; the 6th diode D6 is connected serially between Wiring port JP1 and the Wiring port JP2, shields.
Wherein, anti-reverse module 2 comprises the first switching tube Q1, the 7th resistance R 7 and the 8th resistance R 8.The drain electrode of the first switching tube Q1 is connected to the 3rd fixed contact S13, and the source electrode of the first switching tube Q1 is successively by the 8th resistance R 8 and the 7th resistance R 7 ground connection, and the grid of the first switching tube Q1 is by the 7th resistance R 7 ground connection.
Wherein, lowering and stabilizing blood pressure module 5 comprises low-dropout regulator U4, the 11 resistance R 11, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3 and the 4th capacitor C 4.The input of low-dropout regulator U4 is connected to the source electrode of the first switching tube Q1 by the 11 resistance R 11, be connected between the source electrode and ground of the first switching tube Q1 after first capacitor C 1 and 3 parallel connections of the 3rd capacitor C, be connected between the output and ground of low-dropout regulator U4 after second capacitor C 2 and 4 parallel connections of the 4th capacitor C, the output of low-dropout regulator U4 is connected to the feeder ear of micro control module 6.
Wherein, micro control module 6 comprises single-chip microcomputer U6, reset circuit, observation circuit, reference circuit and indicating circuit.Preferably, to select model for use be the single-chip microcomputer of PIC16F684 to single-chip microcomputer U6.
Institute's reset circuit comprises the 26 resistance R 26, the 27 resistance R 27 and the 9th capacitor C 9.The feeder ear of single-chip microcomputer U6 is that pin 1 passes through the 26 resistance R 26 and the 9th capacitor C 9 ground connection successively, and the node of the 26 resistance R 26 and the 9th capacitor C 9 is pin 4 by the reset terminal that the 27 resistance R 27 is connected to single-chip microcomputer U6.
Described observation circuit comprises the first voltage-stabiliser tube D2, the 12 resistance R 12, the 13 resistance R 13 and the 14 resistance R 14.The 5th fixed contact S22 is successively by the 12 resistance R 12 and the 14 resistance R 14 ground connection, the node of the 12 resistance R 12 and the 14 resistance R 14 is pin 6 by the 3rd I/O end that the 13 resistance R 13 is connected to described single-chip microcomputer U6, the 3rd I/O end that the plus earth of the first voltage-stabiliser tube D2, the negative pole of the first voltage-stabiliser tube D2 are connected to described single-chip microcomputer U6 is pin 6.Single-chip microcomputer U6 produces a control signal according to the described detection signal of the 5th fixed contact S22 output, described control signal is pin 10 outputs by the second I/O end of single-chip microcomputer U6, and described control signal will be controlled described switch control module 3 and produce first output voltage or second output voltage.
Described reference circuit comprises three ends adjustable shunting a reference source U5 and the 20 resistance R 20, the feeder ear of single-chip microcomputer U6 is pin 1 is connected to the adjustable shunting a reference source of three ends U5 by the 20 resistance R 20 negative electrode, the plus earth of three ends are adjustable shunting a reference source U5, the node of the 20 resistance R 20 and the adjustable shunting a reference source of three ends U5 is connected to the reference edge of the adjustable shunting a reference source of three ends U5, and the reference edge of three ends are adjustable shunting a reference source U5 is pin 12 by the reference voltage external connection end that the 25 resistance R 25 is connected to single-chip microcomputer U6 also.
Wherein, switch control module 3 comprises second switch pipe Q2, the 3rd switching tube Q3, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 9th resistance R 9 and the tenth resistance R 10.The source electrode of second switch pipe Q2 is connected to the source electrode of the first switching tube Q2, and the source electrode of second switch pipe Q2 is connected to the collector electrode of the 3rd switching tube Q3 successively by the tenth resistance R 10 and the 3rd resistance R 3, the grounded emitter of the 3rd switching tube Q3, the node of the tenth resistance R 10 and the 3rd resistance R 3 is connected to the grid of second switch pipe Q2, the base stage of the 3rd switching tube Q3 is pin 10 by the second I/O end that the 4th resistance R 4 is connected to described single-chip microcomputer U6, and the base stage of the 3rd switching tube Q3 is by the 6th resistance R 6 ground connection.By the 9th resistance R 9 and the 5th resistance R 5 ground connection, the first I/O end that the node of the 9th resistance R 9 and the 5th resistance R 5 is connected to single-chip microcomputer U6 is pin 11 successively in the drain electrode of second switch pipe Q2.Wherein, the 5th resistance R 5 and the 9th resistance R 9 constitute sample circuit; described sample circuit is sampled to the output voltage V CC of switch control module 3 and is obtained a sampled voltage; the first I/O end that the node of described sampled voltage by the 5th resistance R 5 and the 9th resistance R 9 exports single-chip microcomputer U6 to is pin 11; single-chip microcomputer U6 compares the reference voltage of the reference edge of described sampled voltage and the adjustable shunting a reference source of three ends U5; if described sampled voltage is less than described reference voltage; single-chip microcomputer U6 will control the 3rd switching tube Q3 and end; thereby cut-off switch control module 3 plays a protective role to DC power supply 101.
Wherein, constant-current driven module 4 comprises first inductance L 1, one group or the many groups LED constant-current circuit that is in parallel, and every group of LED constant-current circuit includes constant-current driven chip and peripheral circuit thereof, and preferably, selecting model for use is the constant-current driven chip of MP2370.
In the present embodiment, comprise that with constant-current driven module 4 first inductance L 1 and three groups of LED constant-current circuits that are in parallel are that example is set forth, as follows:
First group of LED constant-current circuit comprises constant-current driven chip U1, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the 3rd diode D3 and second inductance L 2, the input of described constant-current driven chip U1 is that pin 5 is the drain electrode of second switch pipe Q2 by the output that first inductance L 1 is connected to described switch control module 2, the input that the 16 resistance R 16 is connected to constant-current driven chip U1 is that pin 5 and Enable Pin are between the pin 4, the input that the 5th capacitor C 5 is connected to constant-current driven chip U1 is between pin 5 and the ground, the output of constant-current driven chip U1 is that pin 6 is connected to the anode that first led light source is LIGHT1 by second inductance L 2, the feedback end of constant-current driven chip U1 is that pin 3 is successively by the 15 resistance R 15 and the 17 resistance R 17 ground connection, the node of the 15 resistance R 15 and the 17 resistance R 17 is connected to the negative terminal that first led light source is LIGHT1, the output that the negative pole of the 3rd diode D3 is connected to constant-current driven chip U1 is pin 6, the plus earth of the 3rd diode D3, the output that the 6th capacitor C 6 is connected to constant-current driven chip U1 is that pin 6 and feed end are between the pin 1, and the 7th capacitor C 7 is connected between the anode and ground that first led light source is LIGHT1.
Second group of LED constant-current circuit comprises constant-current driven chip U2, the 15 resistance R 15 ', the 16 resistance R 16 ', the 17 resistance R 17 ', the 5th capacitor C 5 ', the 6th capacitor C 6 ', the 7th capacitor C 7 ', the 3rd diode D3 ' and second inductance L 2 ', the input of described constant-current driven chip U2 is that the input that pin 5 is connected to constant-current driven chip U1 is pin 5, the input that the 16 resistance R 16 ' is connected to constant-current driven chip U2 is that pin 5 and Enable Pin are between the pin 4, the input that the 5th capacitor C 5 ' is connected to constant-current driven chip U2 is between pin 5 and the ground, the output of constant-current driven chip U2 is that pin 6 is connected to the anode that second led light source is LIGHT2 by second inductance L 2 ', the feedback end of constant-current driven chip U2 is that pin 3 is successively by the 15 resistance R 15 ' and the 17 resistance R 17 ' ground connection, the node of the 15 resistance R 15 ' and the 17 resistance R 17 ' is connected to the negative terminal that second led light source is LIGHT2, the output that the negative pole of the 3rd diode D3 ' is connected to constant-current driven chip U2 is pin 6, the plus earth of the 3rd diode D3 ', the output that the 6th capacitor C 6 ' is connected to constant-current driven chip U2 is that pin 6 and feed end are between the pin 1, and the 7th capacitor C 7 ' is connected between the anode and ground that second led light source is LIGHT2.
The 3rd group of LED constant-current circuit comprises constant-current driven chip U3, the 15 resistance R 15 "; the 16 resistance R 16 ", the 17 resistance R 17 "; the 5th capacitor C 5 ", the 6th capacitor C 6 "; the 7th capacitor C 7 ", the 3rd diode D3 " and second inductance L 2 ", the input of described constant-current driven chip U3 is that the input that pin 5 is connected to constant-current driven chip U1 is pin 5, the 16 resistance R 16 " input that is connected to constant-current driven chip U3 is that pin 5 and Enable Pin are between the pin 4; the 5th capacitor C 5 " input that is connected to constant-current driven chip U3 is between pin 5 and the ground, the output of constant-current driven chip U3 is that pin 6 is by second inductance L 2 " be connected to the anode that the 3rd led light source is LIGHT3; the feedback end of constant-current driven chip U3 is that pin 3 is successively by the 15 resistance R 15 " and the 17 resistance R 17 " ground connection; the 15 resistance R 15 " and the 17 resistance R 17 " node be connected to the negative terminal that the 3rd led light source is LIGHT3; the 3rd diode D3 " the negative pole output that is connected to constant-current driven chip U3 be pin 6, the 3rd diode D3 " plus earth; the 6th capacitor C 6 " output that is connected to constant-current driven chip U3 is that pin 6 and feed end are between the pin 1, the 7th capacitor C 7 " be connected between the anode and ground that the 3rd led light source is LIGHT3.
Wherein, brightness regulation module 7 comprises the three group light regulating circuits corresponding with above-mentioned three groups of LED constant-current circuits that are in parallel.
First group of light regulating circuit includes the 18 resistance R 18, the 19 resistance R 19, the 5th diode D5 and the 8th capacitor C 8.The positive pole of the 5th diode D5 is pin 5 by the 5th I/O end that the 18 resistance R 18 and the 19 resistance R 19 are connected to single-chip microcomputer U6 successively, the node of the 18 resistance R 18 and the 19 resistance R 19 is by the 8th capacitor C 8 ground connection, and the feedback end that the negative pole of the 5th diode D5 is connected to the constant-current driven chip U1 of first group of LED constant-current circuit is pin 3.
Second group of light regulating circuit includes the 18 resistance R 18 ', the 19 resistance R 19 ', the 5th diode D5 ' and the 8th capacitor C 8 '.The positive pole of the 5th diode D5 ' is pin 5 by the 5th I/O end that the 18 resistance R 18 ' and the 19 resistance R 19 ' are connected to single-chip microcomputer U6 successively, the node of the 18 resistance R 18 ' and the 19 resistance R 19 ' is by the 8th capacitor C 8 ' ground connection, and the feedback end that the negative pole of the 5th diode D5 ' is connected to the constant-current driven chip U2 of first group of LED constant-current circuit is pin 3.
The 3rd group the light regulating circuit include the 18 resistance R 18 ", the 19 resistance R 19 ", the 5th diode D5 " and the 8th capacitor C 8 ".The 5th diode D5 " positive pole successively by the 18 resistance R 18 " and the 19 resistance R 19 " the 5th I/O end that is connected to single-chip microcomputer U6 is pin 5; the 18 resistance R 18 " and the 19 resistance R 19 " node by the 8th capacitor C 8 " ground connection, the 5th diode D5 " the negative pole feedback end that is connected to the constant-current driven chip U3 of first group of LED constant-current circuit be pin 3.
Wherein, short-circuit detecting module 8 comprises that with first led light source be that LIGHT1, second led light source are the 4th diode D4, the 4th diode D4 ', the 4th diode D4 that the positive pole of LIGHT2 and the 3rd led light source links to each other respectively ", the 21 resistance R 21, the 22 resistance R 22 and the 23 resistance R 23.The 4th diode D4, the 4th diode D4 ' and the 4th diode D4 " be in parallel; the feeder ear that the positive pole of the 4th diode D4 is connected to single-chip microcomputer U6 by the 23 resistance R 23 and the 22 resistance R 22 successively is that the node of pin 1, the 23 resistance R 23 and the 22 resistance R 22 is pin 3 by the 6th I/O end that the 21 resistance R 21 is connected to described single-chip microcomputer U6.
In addition, Wiring port JP6 is the Wiring port that presets of single-chip microcomputer U6, be used for connecting indicating circuit, the feeder ear that the terminal 1 of Wiring port JP6 is connected to single-chip microcomputer U6 is pin 1, terminal 2 is pin 8 by the 7th I/O end that the 28 resistance is connected to single-chip microcomputer U6, terminal 3 is pin 7 by the 8th I/O end that the 29 resistance is connected to single-chip microcomputer U6, terminal 4 is pin 5 by the 9th I/O end that the 30 resistance is connected to single-chip microcomputer U6, as the terminal 2 at Wiring port JP6, after inserting indicator light on terminal 3 and the terminal 4, can indicate the operating state of this LED control circuit.
The course of work of this LED lamp control circuit is as follows:
First kind: led light source is in and extinguishes state.Specific as follows, the first moving contact S10 of first control switch 102 is connected to the first fixed contact S11, simultaneously, the second moving contact S20 of second control switch 103 is connected to the 4th fixed contact S21, and namely first control switch 102 and second control switch 103 disconnect simultaneously, so DC power supply 101 is turn-offed, led light source is in and extinguishes state, in this process, micro control module 6 is not worked, and DC power supply 101 need not give micro control module 6 power supplies.
Second kind, led light source is luminous with the high light pattern.Specific as follows, the first moving contact S10 of first control switch 102 is connected to the 3rd fixed contact S13, simultaneously, the second moving contact S20 of second control switch 103 is connected to the 6th fixed contact S23, namely first control switch 102 and second control switch 103 are closed simultaneously, this moment, DC power supply 101 was successively by the first moving contact S10, the 3rd fixed contact S13 inserts the drain electrode of the Q1 of first switching tube, so, the 5th fixed contact S22 is that the level on the TEST end is low level, described low level is first detection signal, micro control module 6 produces first output voltage according to the described first detection signal control switch control module 3, constant-current driven module 4 produces one according to described first output voltage and is used for led light source with first constant current of high light pattern work, so led light source is LIGHT1, LIGHT2 and LIGHT3 are all luminous with the high light pattern.
The third, led light source is luminous with low light level pattern.Specific as follows, the first moving contact S10 of first control switch 102 is connected to the second fixed contact S12, simultaneously, the second moving contact S20 of second control switch 103 is connected to the 5th fixed contact S22, namely first control switch 102 and second control switch 103 are closed simultaneously, this moment, DC power supply 101 was successively by the first moving contact S10, the second fixed contact S12 inserts the drain electrode of the Q1 of first switching tube, so, the 5th fixed contact S22 is that the level on the TEST end is high level, described high level is second detection signal, micro control module 6 produces second output voltage according to the described second detection signal control switch control module 3, constant-current driven module 4 produces one according to described second output voltage and is used for led light source with second constant current of low light level pattern work, so led light source is LIGHT1, LIGHT2 and LIGHT3 are all luminous with low light level pattern.
In above-mentioned second kind and the third course of work, short-circuit detecting module 8 detects the operating current of led light source always, when led light source is when any one operating current is greater than the current threshold that arranges in it among LIGHT1, LIGHT2 and the LIGHT3, with the output short-circuit triggering signal to micro control module 6, the 6th I/O end that is single-chip microcomputer U6 is that the level on the pin 3 becomes low level by high level, so, single-chip microcomputer U6 controls described switch control module 3 and disconnects so that constant-current driven module 4 quits work, in case circuit is caused damage.
Further, in above-mentioned second kind and the third course of work, the 5th I/O end of single-chip microcomputer U6 is that the luminosity that 5 pairs of led light sources of pin are LIGHT1, LIGHT2 and LIGHT3 is regulated simultaneously, namely, be the value of the voltage on the pin 3 by the feed end of regulating constant-current driven chip U1, constant-current driven chip U2 and constant-current driven chip U3 simultaneously, thereby the output that makes constant-current driven chip U1, constant-current driven chip U2 and constant-current driven chip U3 is the size of current of output on the pin 6 to change, thereby the luminosity of led light source is regulated.
Among the present invention, micro control module 6, lowering and stabilizing blood pressure module 5 and constant-current driven module 4 available chip models are not limited to above-mentioned mentioned arriving, and, can select to arrange according to the side circuit demand to the setting of current threshold and voltage threshold.
Compared with prior art, in the LED lamp control circuit of the present invention, when first control switch 102 disconnects, second control switch 102 disconnects simultaneously, so DC power supply 101 disconnects, led light source will be in and extinguish state, in this process, micro control module 6 is not worked, and DC power supply 101 need not give micro control module 6 power supplies, has saved electric weight.And, in supply module 1, first control switch 102 is arranged between DC power supply 101 and the switch control module 3, being used for control DC power supply 101 opens or turn-offs, second control switch 103 is arranged between DC power supply 101 and the micro control module 6, be used for producing a detection signal according to the on off state of first control switch 102, micro control module 6 produces first output voltage or second output voltage according to described detection signal control switch control module 3, constant-current driven module 4 is luminous with high light pattern or low light level pattern according to described first output voltage or second output voltage control led light source, has realized the selection of the light-emitting mode of led light source.And when first control switch and second control switch were closed, the power of consumption was lower.
In addition, the output short-circuit triggering signal is to micro control module 6 during greater than the current threshold that arranges in it at the operating current of led light source for short-circuit detecting module 8, and micro control module 6 quits work according to the described short circuit triggering signal control control module 3 of opening the light.Simultaneously, brightness regulation module 7 can be regulated the luminosity of led light source.Simultaneously, anti-reverse module 2 disconnects when DC power supply 101 reversal connections, and DC power supply 101 is shielded.
The invention still further relates to a kind of LED light fixture, it comprises LED control circuit and led light source, described LED control circuit is same as described above, and it comprises supply module 1, anti-reverse module 2, switch control module 3, constant-current driven module 4, lowering and stabilizing blood pressure module 5, micro control module 6, brightness regulation module 7 and short-circuit detecting module 8.Described supply module 1 comprises DC power supply 101, first control switch 102 and second control switch 103, first control switch 102 comprises the first moving contact S10, the first fixed contact S11, the second fixed contact S12 and the 3rd fixed contact S13, and second control switch 103 comprises the second moving contact S20, the 4th fixed contact S21, the 5th fixed contact S22 and the 6th fixed contact S23.The first moving contact S10 links to each other with the second moving contact S20 and is connected to DC power supply 101, the first fixed contact S11 is unsettled, the second fixed contact S12 links to each other with the 3rd fixed contact S13 and is connected to described switch control module 3, the 4th fixed contact S21 is unsettled, the 5th fixed contact S22 exports described detection signal, and the 6th fixed contact S23 is unsettled; When the first moving contact S10 was connected to the first fixed contact S11, the second moving contact S20 was connected to the 4th fixed contact S21 simultaneously; When the first moving contact S10 was connected to the second fixed contact S12, the second moving contact S20 was connected to the 5th fixed contact S22 simultaneously; When the first moving contact S10 was connected to the 3rd fixed contact S13, the second moving contact S20 was connected to the 6th fixed contact S23 simultaneously.
Micro control module 6 produces an output voltage according to described detection signal control switch control module 3, and constant-current driven module 4 produces a constant current for described led light source work according to described output voltage.As seen, when first control switch 102 disconnected, second control switch 102 disconnected simultaneously, so DC power supply 101 disconnects, led light source will be in and extinguish state, in this process, micro control module 6 is not worked, and DC power supply 101 need not give micro control module 6 power supplies, has saved electric weight.And when first control switch and the work of second control switch, the power of consumption is lower.
Anti-reverse module 2 disconnects when DC power supply 101 reversal connections, and DC power supply 101 is shielded.Thereby the output voltage of 5 pairs of DC power supply 101 of lowering and stabilizing blood pressure module carries out the lowering and stabilizing blood pressure processing is micro control module 6 power supplies.In addition, can realize short-circuit protection function by short-circuit detecting module 8, can regulate the luminosity of led light source by brightness regulation module 7.
The embodiment of this LED control circuit will repeat no more herein.
The above only is embodiments of the invention, not in order to limiting the present invention, all any modifications of doing in the spirit and principles in the present invention, is equal to and replaces or improvement etc., all should be included in protection scope of the present invention.

Claims (9)

1. LED lamp control circuit, link to each other with led light source, it comprises supply module, switch control module, constant-current driven module, lowering and stabilizing blood pressure module and micro control module, described supply module, switch control module links to each other successively with constant-current driven module, thereby it is the micro control module power supply that the voltage that described lowering and stabilizing blood pressure module provides supply module carries out the lowering and stabilizing blood pressure processing, described micro control module is controlled the operating state of switch control module, described supply module comprises DC power supply, it is characterized in that
Described supply module also comprises first control switch and second control switch, first control switch and second control switch be closed or disconnection simultaneously, first control switch is arranged between described DC power supply and the switch control module, being used for the described DC power supply of control opens or turn-offs, second control switch is arranged between described DC power supply and the micro control module, is used for producing a detection signal according to the on off state of first control switch;
Described micro control module is controlled described switch control module according to described detection signal and is produced first output voltage or second output voltage, described constant-current driven module produces one according to described first output voltage and is used for described led light source with first constant current of high light pattern work, and perhaps described constant-current driven module is used for described led light source with second constant current of low light level pattern work according to described second output voltage generation one;
Described LED lamp control circuit also comprises anti-reverse module, described anti-reverse module is arranged in the described supply module between first control switch and switch control module, and the output of described anti-reverse module is connected to the input of described lowering and stabilizing blood pressure module, and described anti-reverse module connects in described DC power supply and disconnects inverse time.
2. LED lamp control circuit according to claim 1 is characterized in that,
Described first control switch comprises first moving contact, first fixed contact, second fixed contact and the 3rd fixed contact, and first moving contact is connected to DC power supply, and first fixed contact is unsettled, and second fixed contact links to each other with the 3rd fixed contact and is connected to described switch control module.
3. LED lamp control circuit according to claim 2 is characterized in that,
Described second control switch comprises second moving contact, the 4th fixed contact, the 5th fixed contact and the 6th fixed contact, and second moving contact is connected to first moving contact, and the 4th fixed contact is unsettled, and the 5th fixed contact is exported described detection signal, and the 6th fixed contact is unsettled.
4. LED lamp control circuit according to claim 1 is characterized in that,
Described LED lamp control circuit also comprises the short-circuit detecting module, described short-circuit detecting module is connected between the output and micro control module of constant-current driven module, described short-circuit detecting module detects the operating current of led light source, and the output short-circuit triggering signal is to described micro control module during greater than the current threshold that arranges in it at the operating current of led light source, and described micro control module is controlled described switch control module according to described short circuit triggering signal and disconnected so that described constant-current driven module quits work.
5. LED lamp control circuit according to claim 4, it is characterized in that, described micro control module comprises single-chip microcomputer, described short-circuit detecting module comprises the 4th diode, the 21 resistance, the 22 resistance and the 23 resistance, the negative pole of the 4th diode is connected to the positive pole of described led light source, the positive pole of the 4th diode is connected to the feeder ear of described single-chip microcomputer successively by the 23 resistance and the 22 resistance, the node of the 23 resistance and the 22 resistance is connected to an I/O end of described single-chip microcomputer by the 21 resistance.
6. LED lamp control circuit according to claim 1, it is characterized in that, described LED lamp control circuit also comprises the brightness regulation module, described brightness regulation module is connected between micro control module and the constant-current driven module, described micro control module is regulated first constant current of constant-current driven module output or the size of second constant current by the brightness regulation module, to regulate the luminosity of led light source.
7. LED lamp control circuit according to claim 6, it is characterized in that, described micro control module comprises single-chip microcomputer, described constant-current driven module comprises constant-current driven chip, described brightness regulation module comprises the 18 resistance, the 19 resistance, the 5th diode and the 8th electric capacity, the positive pole of the 5th diode is connected to another I/O end of described single-chip microcomputer successively by the 18 resistance and the 19 resistance, the negative pole of the 5th diode is connected to the feedback end of described constant-current driven chip, and the node of the 18 resistance and the 19 resistance is by the 8th capacity earth.
8. LED lamp control circuit according to claim 1 is characterized in that,
Described micro control module comprises single-chip microcomputer;
Described anti-reverse module comprises first switching tube, the 7th resistance and the 8th resistance, the drain electrode of first switching tube is connected to the 3rd fixed contact, the source electrode of first switching tube is successively by the 8th resistance and the 7th grounding through resistance, and the grid of first switching tube is by the 7th grounding through resistance;
Described lowering and stabilizing blood pressure module comprises low-dropout regulator, the 11 resistance, first electric capacity and second electric capacity, the input of low-dropout regulator is connected to the source electrode of first switching tube by the 11 resistance, first electric capacity is connected between the source electrode and ground of first switching tube, second electric capacity is connected between the output and ground of low-dropout regulator, and the output of low-dropout regulator is connected to the feeder ear of described single-chip microcomputer;
Described switch control module comprises the second switch pipe, the 3rd switching tube, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 9th resistance and the tenth resistance, the source electrode of second switch pipe is connected to the source electrode of first switching tube, and the source electrode of second switch pipe also is connected to the collector electrode of the 3rd switching tube successively by the tenth resistance and the 3rd resistance, the grounded emitter of the 3rd switching tube, the node of the tenth resistance and the 3rd resistance is connected to the grid of second switch pipe, the base stage of the 3rd switching tube is connected to an I/O end of described single-chip microcomputer by the 4th resistance, and the base stage of the 3rd switching tube is also by the 6th grounding through resistance, by the 9th resistance and the 5th grounding through resistance, the node of the 9th resistance and the 5th resistance is connected to another I/O end of single-chip microcomputer successively in the drain electrode of second switch pipe;
Described constant-current driven module comprises first inductance and LED constant-current circuit, described LED constant-current circuit comprises constant-current driven chip, the 15 resistance, the 16 resistance, the 17 resistance, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 3rd diode and second inductance, the input of described constant-current driven chip is connected to the drain electrode of second switch pipe by first inductance, the 16 resistance is connected between the input and Enable Pin of constant-current driven chip, the 5th electric capacity is connected between the input and ground of constant-current driven chip, the output of constant-current driven chip is connected to the anode of led light source by second inductance, the feedback end of constant-current driven chip is successively by the 15 resistance and the 17 grounding through resistance, the node of the 15 resistance and the 17 resistance is connected to the negative terminal of led light source, the negative pole of the 3rd diode is connected to the output of constant-current driven chip, the plus earth of the 3rd diode, the 6th electric capacity is connected between the output and feed end of constant-current driven chip, and the 7th electric capacity is connected between the anode and ground of led light source.
9. LED light fixture, comprise led light source and coupled LED lamp control circuit, described LED lamp control circuit comprises supply module, switch control module, constant-current driven module, lowering and stabilizing blood pressure module and micro control module, described supply module, switch control module links to each other successively with constant-current driven module, thereby it is the micro control module power supply that the voltage that described lowering and stabilizing blood pressure module provides supply module carries out the lowering and stabilizing blood pressure processing, described micro control module is controlled the operating state of switch control module, described supply module comprises DC power supply, it is characterized in that
Described supply module also comprises first control switch and second control switch, first control switch and second control switch be closed or disconnection simultaneously, first control switch is arranged between described DC power supply and the switch control module, being used for the described DC power supply of control opens or turn-offs, second control switch is arranged between described DC power supply and the micro control module, is used for producing a detection signal according to the on off state of first control switch;
Described micro control module is controlled described switch control module according to described detection signal and is produced first output voltage or second output voltage, described constant-current driven module produces one according to described first output voltage and is used for described led light source with first constant current of high light pattern work, and perhaps described constant-current driven module is used for described led light source with second constant current of low light level pattern work according to described second output voltage generation one;
Described LED lamp control circuit also comprises anti-reverse module, described anti-reverse module is arranged in the described supply module between first control switch and switch control module, and the output of described anti-reverse module is connected to the input of described lowering and stabilizing blood pressure module, and described anti-reverse module connects in described DC power supply and disconnects inverse time.
CN2010101571399A 2010-04-27 2010-04-27 Led lamp control circuit and led lamp Expired - Fee Related CN101835308B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101571399A CN101835308B (en) 2010-04-27 2010-04-27 Led lamp control circuit and led lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101571399A CN101835308B (en) 2010-04-27 2010-04-27 Led lamp control circuit and led lamp

Publications (2)

Publication Number Publication Date
CN101835308A CN101835308A (en) 2010-09-15
CN101835308B true CN101835308B (en) 2013-08-14

Family

ID=42719183

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010101571399A Expired - Fee Related CN101835308B (en) 2010-04-27 2010-04-27 Led lamp control circuit and led lamp

Country Status (1)

Country Link
CN (1) CN101835308B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103428956A (en) * 2012-05-17 2013-12-04 东芝照明技术株式会社 Power supply device and luminaire

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102325401B (en) * 2011-06-17 2015-01-07 深圳Tcl新技术有限公司 LED driving device, lamp strip and backlight device
CN103775992B (en) * 2012-10-17 2016-02-03 上海广茂达光艺科技股份有限公司 Gauge tap
CN105657891B (en) * 2015-12-31 2018-05-18 广州达森灯光股份有限公司 A kind of LED drive power circuit
CN108575004B (en) * 2017-03-07 2021-04-30 深圳市海洋王照明工程有限公司 Dimming drive circuit
CN112312607B (en) * 2020-09-15 2023-07-11 厦门阳光恩耐照明有限公司 Constant current switching circuit of LED induction night lamp

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005285527A (en) * 2004-03-30 2005-10-13 Koito Ind Ltd Light-emitting diode type signal lamp unit
CN201008221Y (en) * 2007-02-12 2008-01-16 王晶 High-brightness, high efficiency LED lamp
CN201204722Y (en) * 2007-12-28 2009-03-04 王元成 Automatic light-adjusting LED illumination driver
CN101636021A (en) * 2008-07-25 2010-01-27 深圳市海洋王照明科技股份有限公司 LED constant current driving circuit
CN201430714Y (en) * 2009-06-26 2010-03-24 深圳市恒之源电器有限公司 Led driver

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005285527A (en) * 2004-03-30 2005-10-13 Koito Ind Ltd Light-emitting diode type signal lamp unit
CN201008221Y (en) * 2007-02-12 2008-01-16 王晶 High-brightness, high efficiency LED lamp
CN201204722Y (en) * 2007-12-28 2009-03-04 王元成 Automatic light-adjusting LED illumination driver
CN101636021A (en) * 2008-07-25 2010-01-27 深圳市海洋王照明科技股份有限公司 LED constant current driving circuit
CN201430714Y (en) * 2009-06-26 2010-03-24 深圳市恒之源电器有限公司 Led driver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103428956A (en) * 2012-05-17 2013-12-04 东芝照明技术株式会社 Power supply device and luminaire

Also Published As

Publication number Publication date
CN101835308A (en) 2010-09-15

Similar Documents

Publication Publication Date Title
CN101801145B (en) Led lamp control circuit and led lamp
CN101848580B (en) Led lamp control circuit and led lamp
CN101815386B (en) LED lamp and control circuit thereof
CN101835308B (en) Led lamp control circuit and led lamp
CN204598424U (en) A kind of LED normal illumination and emergency lighting integrated device
CN104427699B (en) LED signal lamp and its LED drive circuit
CN101835306B (en) Led lamp control circuit and led lamp
CN203039966U (en) Solar LED lamp control system
CN204350378U (en) A kind of LED of energy extinguish fast
CN103037560A (en) Automatic dimming emergency lamp
CN202310206U (en) Control circuit of ultra-low-power single wire power supply touch switch
CN201983169U (en) LED (light-emitting diode) fluorescent tube with emergency lighting function
CN201805575U (en) Serial-parallel protective circuit of LED street lamp
CN202172519U (en) Discharge circuit for solving problem of surplus brightness after switching off of LED lamp
CN212413472U (en) Dimming LED controller
CN201298940Y (en) LED light fixture driving power supply
CN201298743Y (en) Energy-saving device for moped charger
CN104753112A (en) Solar LED control circuit
CN207475930U (en) LED drive power circuit and luminaire
CN111405705A (en) Dimming L ED controller and output short-circuit protection method
CN107543094A (en) A kind of LED lamp with function of emergency illumination
CN204733422U (en) A kind of Solar lamp system
CN101772238B (en) Light source drive circuit
CN205071382U (en) Intelligence emergency light device
CN209693109U (en) A kind of adjustable power supply of LED lamp

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130814

Termination date: 20200427