CN104219820A - LED (Light Emitting Diode) drive and control circuit - Google Patents
LED (Light Emitting Diode) drive and control circuit Download PDFInfo
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Abstract
The invention discloses an LED (Light Emitting Diode) drive and control circuit for discharging a working lamp and external electronic equipment. The LED drive and control circuit comprises an electric power storage module used for accepting charging of a power generation module, a voltage drop detection module used for detecting the voltage of the electric power storage module, a voltage dividing module used for dividing the voltage of the electric power storage module to the voltage drop detection module, a relay module used for controlling external power supply of the electric power storage module, a switch module used for controlling a connection between an LED and the electric power storage module, and a trigger module used for triggering the switch module to switch on or off, wherein the voltage of the electric power storage module can be output to the LED through the trigger module and the switch module, and the voltage of the electric power storage module is controlled by the voltage drop detection module, so that the voltage of the electric power storage module can meet drive voltage of the LED, and thus the LED is directly driven to work normally, and increase of a driver is avoided. The electric power storage module is capable of storing electric quantity, so that when the power generation module stops generating the power, the electric power storage module can supply the electricity to a lamp, so that the work hour for lifting the working lamp is prolonged.
Description
Technical field
The present invention relates to LED control circuit, particularly relate to a kind of LED Drive and Control Circuit without driver.
Background technology
Lifting work lamp is mainly by lamp holder, and elevating lever and skeleton component three parts form.Lamp holder generally has two, is fixed on elevating lever top with hold-down nut, can within the scope of 180 °, adjust arbitrarily direction.LED light source and lens are housed in lamp holder, make light be projection.After elevating lever rises completely, can reach 2 meters of above height, after contraction highly approximately 0.7 meter, user can adjust arbitrarily height as required between 0.7-2 rice.Skeleton component is mainly used to the skeleton of fixing light fixture power supply unit and carries mobile device.Wherein, power supply unit comprises digital frequency conversion generator, LED driving, catapult line and lamp operation panel.Digital frequency conversion generator provides AC220V AC power for light fixture.LED drives and is used for controlling LED electric current.Catapult line is used for connecting lamp holder and LED drives, and catapult line can also can shrink automatically along with elevating lever extends.On guidance panel, mainly contain the switch of light fixture and the status indicator lamp of generator.Carry mobile device and comprise road wheel, pull bar, pull bar also can stretch.Light fixture, in the time of non operating state, can be reduced to lowest part by elevating lever, lamp holder can be taken off and is contained on skeleton, by the folding and unfolding of catapult line on a pallet, the similar case and bag of light fixture overall appearance after shell is closed.
Can find out from above introduction, lifting work lamp is maximum that feature be that non operating state can be shunk, and adopts portable digital frequency conversion generator, all very convenient movements and carrying from volume and weight; Weak point is that the general tankage of small size digital generator is little, thereby continuous operating time is short.The power of generator is much larger than the power of lamp holder, and generator is not fully used, and has energy waste; The not smooth place that ventilates in tunnel etc., the noise of generator also can affect staff's hearing.
In lifting work lamp, LED is that in the time that generator is normally worked, by driver control, LED normally works by driver control.But in the time that generator stops generating electricity, while utilizing other power supplys LED to be powered, also demand motive device, therefore, can cause LED drive circuit line to become complicated, affects the service efficiency of lifting work lamp again.
Summary of the invention
Based on this, being necessary, for the problem that the digital frequency conversion generator operating time holds, power cannot make full use of, provides a kind of and can extend lifting work lamp operating time and the LED Drive and Control Circuit without driver control LED.
A kind of LED Drive and Control Circuit, for to the electric discharge of work light and external electronic device, comprising: for accepting the power storage module of electricity generation module charging, for detection of the voltage drop detection module of described power storage module voltage, for described power storage module voltage being divided to the division module of described voltage drop detection module, for controlling the relay module of power storage module supplying power for outside, for controlling switch module that LED is connected with power storage module and for triggering the trigger module of described switch module conducting or cut-off;
The test side of described voltage drop detection module is electrically connected with the output of described division module, the earth terminal ground connection of described voltage drop detection module, the output of described voltage drop detection module is electrically connected with the first input end of described relay module, the input of described division module is electrically connected with the output of described relay module, and the second input of described relay module is for connecing the positive pole of described power storage module; The output of described relay module is also electrically connected with the input of described trigger module, and the output of described trigger module is electrically connected with described switch module input, and the output of described switch module is for being electrically connected with LED;
When described voltage drop detection module detects that by described division module the voltage of power storage module is greater than discharge threshold, described in described voltage drop detection module controls, relay module obtains electric, described power storage module is powered to described trigger module by described relay module, described trigger module obtains the described switch module conducting of electric triggering, and described power storage module is powered to LED;
When described voltage drop detection module detects that by described division module the voltage of power storage module is less than or equal to discharge threshold, relay module dead electricity described in described voltage drop detection module controls, described relay module disconnects being connected between described power storage module and described trigger module, described trigger module dead electricity triggers described switch module cut-off, and described power storage module stops LED powering.
Therein in an embodiment, described voltage drop detection module comprises three-terminal voltage-stabilizing pipe U1, the test side of described three-terminal voltage-stabilizing pipe U1 is the test side of described voltage drop detection module, the earth terminal of the just very described voltage drop detection module of described three-terminal voltage-stabilizing pipe U1, the negative pole of described three-terminal voltage-stabilizing pipe U1 is the output of described voltage drop detection module.
Therein in an embodiment, described division module comprises divider resistance R2 and divider resistance R3, described divider resistance R2 and described divider resistance R3 are series between the output and earth terminal of described relay module, and described divider resistance R2 is electrically connected with the test side of described voltage drop detection module with the points of common connection of described divider resistance R3.
Therein in an embodiment, described relay module comprises relay R L1, the electronic coil of described relay R L1 is series between the input of described division module and the output of described voltage drop detection module, normal open switch one end of described relay R L1 is for being electrically connected with the positive pole of power storage module, the normal open switch other end of described relay R L1 is electrically connected with the electronic coil of described relay R L1, the output that the electronic coil of described relay R L1 and the points of common connection of normal open switch are described relay module.
In an embodiment, described trigger module comprises trigger switch SW1 therein, and the input of described trigger switch SW1 and trigger end correspond to input and the output of described trigger module.
Therein in an embodiment, described switch module comprises relay R L2, described relay R L2 comprises electronic coil, the first normal open switch and the second normal open switch, described electronic coil one end is electrically connected with the positive pole of LED2, the other end ground connection of described electronic coil, one end of described the first normal open switch is electrically connected with the positive pole of LED2, and the other end is electrically connected with the positive pole of LED1, one end of described the second normal open switch is connected with the negative electricity of LED2, and the other end is connected with the negative electricity of LED1.
In an embodiment, also comprise filtration module therein, the input of described filtration module is electrically connected with the points of common connection of described relay module output and described trigger module input, the output head grounding of described filtration module.
In an embodiment, described filtration module comprises electrochemical capacitor C2 and filter capacitor C3 therein, one end ground connection after described electrochemical capacitor C2 is in parallel with described filter capacitor C3, the input that the other end is described filtration module.
Therein in an embodiment, also comprise anti-reverse module, the input of described anti-reverse module is used for connecing external charging port, the output of described anti-reverse module is electrically connected with the output of described relay module, and the feedback end of described anti-reverse module is electrically connected with the output of described division module.
Therein in an embodiment, described anti-reverse module comprises diode D1, diode D2 and divider resistance R1, the negative pole of described diode D1 is connected with one end of described divider resistance R1, the other end of described divider resistance R1 is the feedback end of described anti-reverse module, the positive pole of described diode D1 is electrically connected with the positive pole of described diode D2, the negative pole of described diode D2 is the output of described anti-reverse module, the input that the anodal points of common connection of the positive pole of described diode D1 and described diode D2 is described anti-reverse module.
Above-mentioned LED Drive and Control Circuit, by increasing power storage module, can also charge electricity generation module in to light fixture power supply to power storage module.Add trigger module and switch module in the rear class of power storage module, make the voltage of power storage module to export to LED by trigger module and switch module, and the voltage of power storage module is subject to the control of pressure drop detection module, thereby the voltage of power storage module can meet the driving voltage of LED, thereby directly driving LED is normally worked, and avoids increasing driver.Moreover power storage module can storing electricity, therefore, in the time that electricity generation module stops generating electricity, power storage module can be powered to light fixture, thereby extends the operating time of lifting work lamp.
Brief description of the drawings
Fig. 1 is the module map of LED Drive and Control Circuit;
Fig. 2 is the schematic diagram of LED Drive and Control Circuit.
Embodiment
As shown in Figure 1, be the module map of LED Drive and Control Circuit.
A kind of LED Drive and Control Circuit, comprising: for accepting the power storage module 102 of electricity generation module (not shown) charging, for detection of the voltage drop detection module 104 of described power storage module 102 voltages, for described power storage module 102 voltages being divided to the division module 106 of described voltage drop detection module 104, for controlling the relay module 108 of power storage module 102 supplying power for outsides, for controlling switch module 112 that LED is connected with power storage module 102 and for triggering the trigger module 110 of described switch module 112 conductings or cut-off.
The test side of described voltage drop detection module 104 is electrically connected with the output of described division module 106, the earth terminal ground connection of described voltage drop detection module 104, the output of described voltage drop detection module 104 is electrically connected with the first input end of described relay module 108, the input of described division module 106 is electrically connected with the output of described relay module 108, and the second input of described relay module 108 is for connecing the positive pole of described power storage module 102; The output of described relay module 108 is also electrically connected with the input of trigger module 110, and the output of trigger module 110 is electrically connected with the input of switch module 112, and the output of switch module 112 is for being electrically connected with LED.
When described voltage drop detection module 104 detects that by described division module 106 voltage of power storage module 102 is greater than discharge threshold, described voltage drop detection module 104 is controlled described relay module 108 and is obtained electric, described power storage module 102 is powered to trigger module 110 by described relay module 108, trigger module 110 obtains electric trigger switch module 112 conductings, and power storage module 102 is powered to LED.
When described voltage drop detection module 104 detects that by described division module 106 voltage of power storage module 102 is less than or equal to discharge threshold, described voltage drop detection module 104 is controlled described relay module 108 dead electricity, and described relay module 108 disconnects being connected between described power storage module 102 and trigger module 110.Trigger module 110 dead electricity trigger switch modules 112 are ended, and described power storage module 102 stops LED powering.
Power storage module 102 is for charging in the time that electricity generation module (not shown) is generated electricity, in the time that electricity generation module stops generating electricity, to lifting work lamp and by usb interface module 112 external electronic equipments power supplies.Thereby can make full use of the generated output of electricity generation module.
Division module 106 is for exporting to voltage drop detection module 104 after the output voltage dividing potential drop of power storage module 102.
Voltage drop detection module 104, for detect the output voltage of power storage module 102 by the output voltage that detects division module 106, is avoided power storage module 102 excessively to put and causes power storage module 102 to be damaged.Particularly, voltage drop detection module 104 detects when the output voltage of power storage module 102 is greater than discharge threshold, voltage drop detection module 104 control relay modules 108 obtain electric, relay module 108 conductings, thus make power storage module 102 by relay module 108 supplying power for outsides.Voltage drop detection module detects when the output voltage of power storage module 102 is less than or equal to discharge threshold, and voltage drop detection module 104 is in control relay module 108 dead electricity, and relay module 108 is ended, thereby makes the power storage module 102 cannot supplying power for outside.Power storage module 102 quits work, and avoids occurring putting.
Relay module 108 is for connecting power storage module 102 and trigger module 110.Particularly, relay module 108 when electric, power storage module 102 is connected with trigger module 110.When relay module 108 dead electricity, power storage module 102 disconnects being connected between trigger module 110.
Trigger module 110 for according to self conducting and the cut-off of electric and dead electricity control switch module 112.Particularly, trigger module 110 when electric, 112 conductings of control switch module, when trigger module 110 dead electricity, control switch module 112 is ended.
Switch module 112 is for connecting trigger module 110 and LED, thereby can be in the time of switch module 112 conducting, and power storage module 102, to LED power supply, normally works LED.
Incorporated by reference to Fig. 2.
Power storage module 102 is storage battery BT.
Voltage drop detection module 104 comprises three-terminal voltage-stabilizing pipe U1, the test side of described three-terminal voltage-stabilizing pipe U1 is the test side of described voltage drop detection module 104, the earth terminal of the just very described voltage drop detection module 104 of described three-terminal voltage-stabilizing pipe U1, the negative pole of described three-terminal voltage-stabilizing pipe U1 is the output of described voltage drop detection module 104.
Voltage drop detection module 104 also comprises filter capacitor C1, and filter capacitor C1 one end is electrically connected with the test side of three-terminal voltage-stabilizing pipe U1, other end ground connection.
Division module 106 comprises divider resistance R2 and divider resistance R3, described divider resistance R2 and described divider resistance R3 are series between the output and earth terminal of described relay module 108, and described divider resistance R2 is electrically connected with the test side of described voltage drop detection module 104 with the points of common connection of described divider resistance R3.
Relay module 108 comprises relay R L1, the electronic coil of described relay R L1 is series between the input of described division module 106 and the output of described voltage drop detection module 104, normal open switch one end of described relay R L1 is for being electrically connected with the positive pole of power storage module 102, the normal open switch other end of described relay R L1 is electrically connected with the electronic coil of described relay R L1, and the electronic coil of described relay R L1 and the points of common connection of normal open switch are the output of described relay module 108.
Relay module 108 also comprises diode D3, and diode D3 is parallel to the electronic coil two ends of relay R L1, and wherein, the negative pole of diode D3 is electrically connected with normal open switch one end of relay R L1.
Trigger module 110 comprises trigger switch SW1, and the input of described trigger switch SW1 and trigger end correspond to input and the output of described trigger module 110.
In one embodiment, trigger switch SW1 and trigger switch SW2 are used in conjunction with.
When trigger switch SW2 closure and trigger switch SW1 disconnect time, now by electricity generation module, the LED in work light is powered.Therefore, between electricity generation module and LED, need to increase driver 1 and driver 2, thus corresponding driving LED 1 and LED2.Now two groups of LED are respectively by two driver control, and two groups of LED are relatively independent.If breaking down, one of them driving or one group of LED can not have influence on another set drive and another group LED.
When trigger switch SW2 disconnects and trigger switch SW1 when closed, it is electric that the electronic coil of relay R L2 obtains, and the first normal open switch K1 of relay R L2 and the second normal open switch K2 are all closed.Thereby two groups of LED are connected in parallel, and storage battery is powered to LED by the normal open switch of trigger switch SW1 and relay R L2.Now to have driving LED between storage battery, without driver.Because battery tension has fixed range, therefore, as long as the cell voltage of storage battery is at the highest notch, the electric current of thing LED meets the requirement of LED drive current, just can not cause damage to LED because electric current is excessive, thereby can make LED normally work.
And LED electric current reduces and slowly reduces with cell voltage, therefore can not cause significantly visually drop, experience thereby improve user.Due to the direct driving LED of battery, without driver, be conducive to reduce cost and the weight of lifting work lamp, and LED Drive and Control Circuit line is simple.
In the above-described embodiments, trigger switch SW1 and same time of trigger switch SW2 can only be closed one, therefore can select the ship type switch of a logic merit ON-OFF-ON, and after a closure, another disconnects automatically.
When trigger switch SW1 is closed, the LED in lamp holder, by storage battery power supply, is now referred to as work light state; When trigger switch SW2 is closed, the LED in lamp holder, by generator powered, is now referred to as high light state.Under high light state, generator also charges a battery by charger simultaneously.Both can save the electric energy of generator, again charging interval outside occupying volume not; By suitable charger output no-load voltage is set, can ensure that battery is not overcharged, after approaching charger floating voltage, cell voltage enters floating charge state, and floating charge is conducive to battery recovery capacity.
Switch module 112 comprises relay R L2, described relay R L2 comprises electronic coil, the first normal open switch K1 and the second normal open switch K2, described electronic coil one end is electrically connected with the positive pole of LED2, the other end ground connection of described electronic coil, described first one end of normal open switch K1 and the positive pole of LED2 are electrically connected, the other end is electrically connected with the positive pole of LED1, and described second one end of normal open switch K2 and the negative electricity of LED2 are connected, and the other end is connected with the negative electricity of LED1.
LED Drive and Control Circuit also comprises filtration module 114, and the input of described filtration module 114 is electrically connected with the points of common connection of described relay module 108 outputs and described voltage transformation module 110 inputs, the output head grounding of described filtration module 114.
Filtration module 114 comprises electrochemical capacitor C2 and filter capacitor C3, one end ground connection after described electrochemical capacitor C2 is in parallel with described filter capacitor C3, and the other end is the input of described filtration module 114.
LED Drive and Control Circuit also comprises anti-reverse module 116, the input of described anti-reverse module 116 is used for connecing external charging port, the output of described anti-reverse module 116 is electrically connected with the output of described relay module 108, and the feedback end of described anti-reverse module 116 is electrically connected with the output of described division module 106.
Anti-reverse module 116 comprises diode D1, diode D2 and divider resistance R1, the negative pole of described diode D1 is connected with one end of described divider resistance R1, the other end of described divider resistance R1 is the feedback end of described anti-reverse module 116, the positive pole of described diode D1 is electrically connected with the positive pole of described diode D2, the negative pole of described diode D2 is the output of described anti-reverse module 116, and the anodal points of common connection of the positive pole of described diode D1 and described diode D2 is the input of described anti-reverse module 116.
Based on above-mentioned all embodiment, the operation principle of LED Drive and Control Circuit is as follows:
Electricity generation module generating in lifting work lamp system, simultaneously to the power supply of lifting work lamp and to charge in batteries.Electricity generation module is by charging inlet during to charge in batteries, and the voltage at three-terminal voltage-stabilizing pipe U1 two ends reaches conducting voltage, three-terminal voltage-stabilizing pipe U1 conducting.The electronic coil of relay R L1 obtains electric, therefore, the normal open switch closure of relay R L1, electricity generation module passes through closed normal open switch to charge in batteries.
In the time that electricity generation module stops generating electricity, storage battery starts lifting work lamp.Battery tension Vbat is greater than 2.5*(R2+R3) when/R3, the voltage that three-terminal voltage-stabilizing pipe U1 test side detects can reach the conducting voltage of three-terminal voltage-stabilizing pipe U1, three-terminal voltage-stabilizing pipe U1 conducting.Therefore, the electronic coil of relay R L1 obtains electric, the normal open switch closure of relay R L1.Trigger switch SW1 obtains electric closure, and therefore, the electronic coil of relay R L2 obtains electric.The first normal open switch K1 of relay R L2 and the second normal open switch K2 are all closed.LED1 is in parallel with LED2, and storage battery is to LED1 and LED2 power supply.What set in advance due to battery tension is the driving voltage of LED, therefore, and when storage battery is powered to LED, without increasing driver.
Between storage battery output voltage and trigger switch SW1 receiver voltage, increase filter capacitor C3 and electrochemical capacitor C2, thus the interference in filtering storage battery output voltage.
When battery tension, Vbat is less than or equal to 2.5*(R2+R3) when/R3, the voltage that three-terminal voltage-stabilizing pipe U1 test side detects cannot make three-terminal voltage-stabilizing pipe U1 conducting, therefore, three-terminal voltage-stabilizing pipe U1 cut-off.The electronic coil dead electricity of relay R L1, the normal open switch of relay R L1 disconnects.Storage battery stops supplying power for outside.Trigger switch SW1 dead electricity, the same dead electricity of electronic coil of relay R L2, therefore the first normal open switch K1 and the second normal open switch K2 all disconnect.Storage battery stops LED powering.
Again generating electricity when electricity generation module and during to charge in batteries, when three-terminal voltage-stabilizing pipe U1 reaches conducting voltage conducting, the electronic coil of relay R L1 obtains electric, the normal open switch closure of relay R L1, storage battery starts to be charged.
Above-mentioned LED Drive and Control Circuit, by increasing power storage module, can also charge electricity generation module in to light fixture power supply to power storage module 102.Add trigger module 110 and switch module 112 in the rear class of power storage module 102, make the voltage of power storage module 102 to export to LED by trigger module 110 and switch module 112, and the voltage of power storage module 102 is subject to the control of pressure drop detection module 104, thereby the voltage of power storage module 102 can meet the driving voltage of LED, thereby directly driving LED is normally worked, and avoids increasing driver.Moreover power storage module 102 can storing electricity, therefore, in the time that electricity generation module stops generating electricity, power storage module 102 can be powered to light fixture, thereby extends the operating time of lifting work lamp.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a LED Drive and Control Circuit, for work light and external electronic device are discharged, it is characterized in that, comprising: for accepting the power storage module of electricity generation module charging, for detection of the voltage drop detection module of described power storage module voltage, for described power storage module voltage being divided to the division module of described voltage drop detection module, for controlling the relay module of power storage module supplying power for outside, for controlling switch module that LED is connected with power storage module and for triggering the trigger module of described switch module conducting or cut-off;
The test side of described voltage drop detection module is electrically connected with the output of described division module, the earth terminal ground connection of described voltage drop detection module, the output of described voltage drop detection module is electrically connected with the first input end of described relay module, the input of described division module is electrically connected with the output of described relay module, and the second input of described relay module is for connecing the positive pole of described power storage module; The output of described relay module is also electrically connected with the input of described trigger module, and the output of described trigger module is electrically connected with described switch module input, and the output of described switch module is for being electrically connected with LED;
When described voltage drop detection module detects that by described division module the voltage of power storage module is greater than discharge threshold, described in described voltage drop detection module controls, relay module obtains electric, described power storage module is powered to described trigger module by described relay module, described trigger module obtains the described switch module conducting of electric triggering, and described power storage module is powered to LED;
When described voltage drop detection module detects that by described division module the voltage of power storage module is less than or equal to discharge threshold, relay module dead electricity described in described voltage drop detection module controls, described relay module disconnects being connected between described power storage module and described trigger module, described trigger module dead electricity triggers described switch module cut-off, and described power storage module stops LED powering.
2. LED Drive and Control Circuit according to claim 1, it is characterized in that, described voltage drop detection module comprises three-terminal voltage-stabilizing pipe U1, the test side of described three-terminal voltage-stabilizing pipe U1 is the test side of described voltage drop detection module, the earth terminal of the just very described voltage drop detection module of described three-terminal voltage-stabilizing pipe U1, the negative pole of described three-terminal voltage-stabilizing pipe U1 is the output of described voltage drop detection module.
3. LED Drive and Control Circuit according to claim 1, it is characterized in that, described division module comprises divider resistance R2 and divider resistance R3, described divider resistance R2 and described divider resistance R3 are series between the output and earth terminal of described relay module, and described divider resistance R2 is electrically connected with the test side of described voltage drop detection module with the points of common connection of described divider resistance R3.
4. LED Drive and Control Circuit according to claim 1, it is characterized in that, described relay module comprises relay R L1, the electronic coil of described relay R L1 is series between the input of described division module and the output of described voltage drop detection module, normal open switch one end of described relay R L1 is for being electrically connected with the positive pole of power storage module, the normal open switch other end of described relay R L1 is electrically connected with the electronic coil of described relay R L1, the output that the electronic coil of described relay R L1 and the points of common connection of normal open switch are described relay module.
5. LED Drive and Control Circuit according to claim 1, is characterized in that, described trigger module comprises trigger switch SW1, and the input of described trigger switch SW1 and trigger end correspond to input and the output of described trigger module.
6. LED Drive and Control Circuit according to claim 1, it is characterized in that, described switch module comprises relay R L2, described relay R L2 comprises electronic coil, the first normal open switch and the second normal open switch, described electronic coil one end is electrically connected with the positive pole of LED2, the other end ground connection of described electronic coil, one end of described the first normal open switch is electrically connected with the positive pole of LED2, the other end is electrically connected with the positive pole of LED1, one end of described the second normal open switch is connected with the negative electricity of LED2, and the other end is connected with the negative electricity of LED1.
7. LED Drive and Control Circuit according to claim 1, it is characterized in that, also comprise filtration module, the input of described filtration module is electrically connected with the points of common connection of described relay module output and described trigger module input, the output head grounding of described filtration module.
8. LED Drive and Control Circuit according to claim 7, it is characterized in that, described filtration module comprises electrochemical capacitor C2 and filter capacitor C3, one end ground connection after described electrochemical capacitor C2 is in parallel with described filter capacitor C3, the input that the other end is described filtration module.
9. LED Drive and Control Circuit according to claim 1, it is characterized in that, also comprise anti-reverse module, the input of described anti-reverse module is used for connecing external charging port, the output of described anti-reverse module is electrically connected with the output of described relay module, and the feedback end of described anti-reverse module is electrically connected with the output of described division module.
10. LED Drive and Control Circuit according to claim 9, it is characterized in that, described anti-reverse module comprises diode D1, diode D2 and divider resistance R1, the negative pole of described diode D1 is connected with one end of described divider resistance R1, the other end of described divider resistance R1 is the feedback end of described anti-reverse module, the positive pole of described diode D1 is electrically connected with the positive pole of described diode D2, the negative pole of described diode D2 is the output of described anti-reverse module, the input that the anodal points of common connection of the positive pole of described diode D1 and described diode D2 is described anti-reverse module.
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| CN201310213490.9A CN104219820B (en) | 2013-05-31 | LED drives control circuit |
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| CN201310213490.9A CN104219820B (en) | 2013-05-31 | LED drives control circuit |
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| CN202799267U (en) * | 2012-06-08 | 2013-03-13 | 深圳市银盾科技开发有限公司 | Multifunctional LED lamp |
| CN202712824U (en) * | 2012-07-13 | 2013-01-30 | 深圳市富满电子有限公司 | Chargeable cell over-discharge protection circuit |
| CN202713732U (en) * | 2012-07-30 | 2013-01-30 | 成都泰瑞美科技有限公司 | Light control emergency power supply for explosion-proof anticorrosion overall plastic LED emergency lamp |
| CN202791745U (en) * | 2012-07-31 | 2013-03-13 | 洪冲祥 | LED emergency illuminating bulb |
| CN202749900U (en) * | 2012-08-08 | 2013-02-20 | 江苏银佳企业集团有限公司 | Singe-phase inverter for emergency power supply |
| CN202931635U (en) * | 2012-11-14 | 2013-05-08 | 长安大学 | Multimode automatic complementary power supply road lighting system |
| CN203312840U (en) * | 2013-05-03 | 2013-11-27 | 深圳市雷达光电科技有限公司 | LED street lamp control system based on wind-solar complementation |
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