CN102769957B - Voltage switching system on movable illuminating lamp - Google Patents
Voltage switching system on movable illuminating lamp Download PDFInfo
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- CN102769957B CN102769957B CN201210228175.9A CN201210228175A CN102769957B CN 102769957 B CN102769957 B CN 102769957B CN 201210228175 A CN201210228175 A CN 201210228175A CN 102769957 B CN102769957 B CN 102769957B
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Abstract
The invention discloses a voltage switching system on a movable illuminating lamp. The voltage switching system comprises an electromagnetic interference (EMI) circuit, a first rectifying and filtering circuit, a power conversion circuit, a second rectifying and filtering circuit, a direct-current (DC) power supply, a voltage switcher, a constant current circuit, a PPM controller, an undervoltage protection circuit, a protection circuit, a battery charging controller and a battery, wherein the EMI circuit penetrates through the first rectifying and filtering circuit, the power conversion circuit, the second rectifying and filtering circuit, the DC power supply and the voltage switcher and is connected with the constant current circuit; the voltage switching system is connected with a light-emitting diode (LED) lamp through the constant current circuit; the first rectifying and filtering circuit is connected with the power conversion circuit through the PPM controller; the DC power supply is connected with the PPM controller; and the voltage switcher, the battery charging controller and the battery are sequentially connected to form a loop. According to the voltage switching system, the problems of the internal friction and AC/CH/DC independent states can be solved, the cost of the switching power supply is greatly reduced, and the service life of the battery is prolonged.
Description
Technical field
The present invention relates to portable lighting technical field, particularly a kind of voltage switched system on movable illumination device that is used in that can increase battery, reduce loss and cost.
Background technology
At present, in LED portable lighting field, wherein not only can be by directly power supply but also can be by built-in battery powered LED lamp illuminating lamp separately of AC, at power supply circuits design aspect, generally adopt the output of the DC power supply 5 of Switching Power Supply single channel, the independent toggle switch of output carries out AC/DC power switching, and internal battery and the direct UNICOM of DC, such design can cause following defect:
1, as long as AC supplies to conduct, the switching toggle switch of lamp is no matter get to any one state, and internal battery all in charging like this, greatly reduces the useful life of battery;
2, the output of the DC power supply 5 of Switching Power Supply single channel, LED lamp and internal battery required voltage electric current are to be difficult to be consistent, such situation have to be carried out balance with current-limiting resistance, as: the load of 3W will cause 1W in-fighting, and loss is very large;
3, because there is Switching Power Supply to give (LED lamp and battery) two load supplyings simultaneously, add in-fighting, so will meet by more powerful Switching Power Supply the cost greatly having increased simultaneously.
Therefore,, for the problem of above-mentioned proposition, need to provide a kind of LED that can increase battery, minimizing loss and cost to be used in the voltage switched system on movable illumination device.
Summary of the invention
The object of the present invention is to provide a kind of voltage switched system on movable illumination device that is used in that can increase battery, reduce loss and cost.
In order to solve the problem of above-mentioned proposition, the present invention adopts following technical scheme:
Be used in the voltage switched system on movable illumination device, this voltage switched system is connected for the LED lamp as movable illumination device with one; This voltage switched system comprises EMI circuit, the first current rectifying and wave filtering circuit, power conversion circuit, the second current rectifying and wave filtering circuit, DC power supply, voltage switch, constant-current circuit, PPM controller, under-voltage protecting circuit, protective circuit, battery charge controller and battery, described EMI circuit is connected with described constant-current circuit successively after the first current rectifying and wave filtering circuit, power conversion circuit, the second current rectifying and wave filtering circuit, DC power supply, voltage switch, and described voltage switched system is connected with LED lamp by constant-current circuit; Described the first current rectifying and wave filtering circuit is also connected with power conversion circuit after PPM controller, and described DC power supply is also connected with PPM controller, and described voltage switch, battery charge controller, battery are in turn connected to form a loop.
Preferably, between described the first current rectifying and wave filtering circuit and PPM controller, being also provided with a under-voltage protecting circuit and the first current rectifying and wave filtering circuit is to be connected with described PPM controller after this under-voltage protecting circuit again; At described DC power supply, be to be connected with PPM controller again after this protective circuit with being also provided with a protective circuit and DC power supply between PPM controller.
Preferably, described voltage switch comprises the first resistance R 6, the second resistance R 7, the 3rd resistance R 8, the 4th resistance R 15, integrated regulator U1, capacitor C 10, optical coupler U2 and diverter switch SW1, described the first resistance R 6, one end of the second resistance R 7 is connected with DC power supply 5 respectively, and described first resistance R 6 other ends are connected with the input of optical coupler U2, the output of described optical coupler U2 respectively with capacitor C 10 positive poles, integrated regulator U1 negative electrode is connected, and described second resistance R 7 other ends are connected with capacitor C 10 negative poles, described the 3rd resistance R 8 one end and capacitor C 10 negative poles, integrated regulator U1 is with reference to extremely connected, and described the 3rd resistance R 8 other ends are connected with integrated regulator U1 anode and ground connection, and described the 4th resistance R 15 one end are connected with capacitor C 10 negative poles, and described diverter switch SW1 comprises the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact, the 6th contact, the 7th contact and the 8th contact, described the first connection charging end, contact CH, described the second contact connects civil power AC and is connected with second resistance R 7 one end, and described the 3rd contact connects battery VCC, described the 4th contact connects LED lamp, and the first switch key A1 is passed through in the first contact in described the 4th contact, the second contact, between the 3rd contact, switch, described the 5th contact is unsettled, described the 6th contact, the 7th contact connects respectively the 4th resistance R 15 other ends, and described the 8th contact is connected with integrated regulator U1 anode, and the second switch key A2 is passed through in the 5th contact in described the 8th contact, the 6th contact, between the 7th contact, switch.
Preferably, described voltage switch comprises the first resistance R 6, the second resistance R 7, the 3rd resistance R 8, the 4th resistance R 15, integrated regulator U1, capacitor C 10, optical coupler U2 and diverter switch SW1, described the first resistance R 6, second resistance R 7 one end are connected with DC power supply 5, and described first resistance R 6 other ends are connected with optical coupler U2 input, described optical coupler U2 output respectively with capacitor C 10 positive poles, integrated regulator U1 negative electrode is connected, and described second resistance R 7 other ends are connected with capacitor C 10 negative poles, described the 3rd resistance R 8 one end and capacitor C 10 negative poles, integrated regulator U1 is with reference to extremely connected, and described the 3rd resistance R 8 other ends are connected with integrated regulator U1 anode and ground connection, and described the 4th resistance R 15 one end are connected with capacitor C 10 negative poles, and described diverter switch SW1 comprises the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact, the 6th contact, the 7th contact and the 8th contact, described the first connection charging end, contact CH, described the second contact connects civil power AC and is connected with second resistance R 7 one end, and described the 3rd contact connects battery VCC, described the 4th contact connects LED lamp, and the first switch key A1 is passed through in the first contact in described the 4th contact, the second contact, between the 3rd contact, switch, described the 5th contact is unsettled, described the 6th contact, the 7th contact connects the 4th resistance R 15 other ends, and described the 8th contact is connected with DC power supply, and the second switch key A2 is passed through in the 5th contact in described the 8th contact, the 6th contact, between the 7th contact, switch.
Preferably, described voltage switch comprises the first resistance R 6, the second resistance R 7, the 3rd resistance R 8, the 4th resistance R 15, integrated regulator U1, capacitor C 10, optical coupler U2 and diverter switch SW1, described the first resistance R 6, second resistance R 7 one end are connected with DC power supply, and described first resistance R 6 other ends are connected with optical coupler U2 input, described optical coupler U2 output and capacitor C 10 positive poles, integrated regulator U1 negative electrode is connected, and described second resistance R 7 other ends are connected with capacitor C 10 negative poles, described the 3rd resistance R 8 one end and capacitor C 10 negative poles, integrated regulator U1 is with reference to extremely connected, and described the 3rd resistance R 8 other ends are connected with integrated regulator U1 anode and ground connection, and described the 4th resistance R 15 one end are connected with electric capacity 10 negative electrodes, and described diverter switch SW1 comprises the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact, the 6th contact, the 7th contact and the 8th contact, described the first connection charging end, contact CH, described the second contact connects civil power AC and is connected with second resistance R 7 one end, and described the 3rd contact connects battery VCC, described the 4th contact connects LED lamp, and the first switch key A1 is passed through in the first contact in described the 4th contact, the second contact, between the 3rd contact, switch, described the 5th contact is unsettled, described the 6th contact, the 7th contact connects the 4th resistance R 15 other ends, and described the 8th contact is connected with the 4th resistance R 15 other ends, and the second switch key A2 is passed through in the 5th contact in described the 8th contact, the 6th contact, between the 7th contact, switch.
Preferably, described voltage switch comprises the first resistance R 6, the second resistance R 7, the 3rd resistance R 8, the 4th resistance R 15, the 5th resistance R 16, integrated regulator U1, capacitor C 10, optical coupler U2 and diverter switch SW1, described the first resistance R 6, second resistance R 7 one end are connected with DC power supply, and described first resistance R 6 other ends are connected with optical coupler U2 input, described optical coupler U2 output and capacitor C 10 positive poles, integrated regulator U1 negative electrode is connected, and described second resistance R 7 other ends are connected with capacitor C 10 negative poles, described the 3rd resistance R 8 one end and capacitor C 10 negative poles, integrated regulator U1 is with reference to extremely connected, described the 3rd resistance R 8 other ends are connected with integrated regulator U1 anode and ground connection, described the 4th resistance R 15 one end are connected with capacitor C 10 negative poles, and described the 5th resistance R 16 one end connect DC power supply, and described diverter switch SW1 comprises the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact, the 6th contact, the 7th contact and the 8th contact, described the first connection charging end, contact CH, described the second contact connects civil power AC and is connected with second resistance R 7 one end, and described the 3rd contact connects battery VCC, described the 4th contact connects LED lamp, and the first switch key A1 is passed through in the first contact in described the 4th contact, the second contact, between the 3rd contact, switch, described the 5th contact is connected with the 5th resistance R 16 other ends, and described the 6th contact is unsettled, and described the 7th contact connects the 4th resistance R 15 other ends, described the 8th contact is connected with the 3rd resistance R 8 one end, and the second switch key A2 is passed through in the 5th contact in described the 8th contact, the 6th contact, between the 7th contact, switch.
Preferably, described protective circuit comprises short-circuit protection circuit, current-limiting protection circuit and output under-voltage protecting circuit.
Preferably, the model of described optical coupler U2 is PC817C.
Preferably, the model of described integrated regulator U1 is TL431.
The present invention has following beneficial effect: the voltage switched system being used on movable illumination device of the present invention can solve in-fighting and AC CH tri-kinds of separate state problems of DC, also greatly reduce the cost of Switching Power Supply and increase battery.
Accompanying drawing explanation
Fig. 1 is the voltage switched system block diagram being used on movable illumination device of the present invention;
Fig. 2 is the first embodiment circuit diagram of the voltage switch in the voltage switched system being used on movable illumination device of the present invention;
Fig. 3 is the second embodiment circuit diagram of the voltage switch in the voltage switched system being used on movable illumination device of the present invention;
Fig. 4 is the 3rd embodiment circuit diagram of the voltage switch in the voltage switched system being used on movable illumination device of the present invention;
Fig. 5 is the 4th embodiment circuit diagram of the voltage switch in the voltage switched system being used on movable illumination device of the present invention;
Fig. 6 is the application in 663 power supply circuits of voltage switch in the voltage switched system being used on movable illumination device of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Embodiment mono-
Shown in Figure 1, the invention provides a kind of voltage switched system being used on movable illumination device, this voltage switched system is connected for the LED lamp 8 as movable illumination device with one; This voltage switched system comprises EMI circuit 1, the first current rectifying and wave filtering circuit 2, power conversion circuit 3, the second current rectifying and wave filtering circuit 4, DC power supply 5, voltage switch 6, constant-current circuit 7, PPM controller 9, under-voltage protecting circuit 10, protective circuit 11, battery charge controller 12 and battery 13, described EMI circuit 1 is connected with described constant-current circuit 7 successively after the first current rectifying and wave filtering circuit 2, power conversion circuit 3, the second current rectifying and wave filtering circuit 4, DC power supply 5, voltage switch 6, and described voltage switched system is connected with LED lamp 8 by constant-current circuit 7; Described the first current rectifying and wave filtering circuit 2 is also connected with power conversion circuit 3 after PPM controller 9, and described DC power supply 5 is also connected with PPM controller 9, and described voltage switch 6, battery charge controller 12, battery 13 are in turn connected to form a loop.
Preferably, between described the first current rectifying and wave filtering circuit 2 and PPM controller 9, being also provided with a under-voltage protecting circuit 10 and the first current rectifying and wave filtering circuit 2 is to be connected with described PPM controller 9 after this under-voltage protecting circuit 10 again; At described DC power supply 5, be to be connected with PPM controller 9 again after this protective circuit 11 with being also provided with a protective circuit 11 and DC power supply 5 between PPM controller 9.
Shown in Figure 2, the described voltage switch 6 in the present invention comprises the first resistance R 6, the second resistance R 7, the 3rd resistance R 8, the 4th resistance R 15, integrated regulator U1, capacitor C 10, optical coupler U2 and diverter switch SW1, described the first resistance R 6, one end of the second resistance R 7 is connected with DC power supply 5 respectively, and described first resistance R 6 other ends are connected with the input of optical coupler U2, the output of described optical coupler U2 respectively with capacitor C 10 positive poles, integrated regulator U1 negative electrode is connected, and described second resistance R 7 other ends are connected with capacitor C 10 negative poles, described the 3rd resistance R 8 one end and capacitor C 10 negative poles, integrated regulator U1 is with reference to extremely connected, and described the 3rd resistance R 8 other ends are connected with integrated regulator U1 anode and ground connection, and described the 4th resistance R 15 one end are connected with capacitor C 10 negative poles, and described diverter switch SW1 comprises the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact, the 6th contact, the 7th contact and the 8th contact, described the first connection charging end, contact CH, described the second contact connects civil power AC and is connected with second resistance R 7 one end, and described the 3rd contact connects battery VCC, described the 4th contact connects LED lamp 8, and the first switch key A1 is passed through in the first contact in described the 4th contact, the second contact, between the 3rd contact, switch, described the 5th contact is unsettled, described the 6th contact, the 7th contact connects respectively the 4th resistance R 15 other ends, and described the 8th contact is connected with integrated regulator U1 anode, and the second switch key A2 is passed through in the 5th contact in described the 8th contact, the 6th contact, between the 7th contact, switch.
Wherein said protective circuit 11 comprises short-circuit protection circuit 111, current-limiting protection circuit 112 and output under-voltage protecting circuit 113, is all prior aries, no longer repeats herein; The model of described optical coupler U2 is PC817C; The model of described integrated regulator U1 is TL431.
And according to integrated regulator U1: the application principle Uo=2.5 (1+R7/R8) of TL431, wherein the 4th resistance R 15 can be switched unsettled and ground connection under the effect of diverter switch SW1, is variablely changed to two kinds of different DC voltages outputs that is:.
Embodiment bis-
Shown in Figure 3, in the present invention, other are identical with embodiment mono-, and difference is that the 8th contact of described diverter switch SW1 is connected with DC power supply 5.
And according to integrated regulator U1: the application principle Uo=2.5 (1+R7/R8) of TL431, wherein the 4th resistance R 15 can be switched unsettled and power supply DC, is variablely changed to two kinds of different DC voltages outputs that is:.
Embodiment tri-
Shown in Figure 4, in the present invention, other are identical with embodiment mono-, and difference is that the 8th contact of described diverter switch SW1 is connected with the 4th resistance R 15 other ends.
And according to integrated regulator U1: the application principle Uo=2.5 (1+R7/R8) of TL431, can make like this 4th resistance R 15 can switch unsettled and power supply DC,, be variablely changed to three kinds of different DC voltages outputs.
Embodiment tetra-
Shown in Figure 5, in the present invention, other are identical with embodiment mono-, difference is also to comprise the 5th resistance R 16, described the 5th resistance R 16 one end connect DC power supply 5, and the 5th contact of described diverter switch SW1 is connected with the 5th resistance R 16 other ends, and the 6th contact of described diverter switch SW1 is unsettled, the 7th contact of described diverter switch SW1 connects the 4th resistance R 15 other ends, and the 8th contact of described diverter switch SW1 is connected with the 3rd resistance R 8 one end.
And according to integrated regulator U1: the application principle Uo=2.5 (1+R7/R8) of TL431, integrated regulator U1: the reference of TL431 extremely can be switched unsettled and R15, R16, is variablely changed to three kinds of different DC voltages outputs.
Embodiment five
Shown in Figure 6 is the application of the voltage switch in the voltage switched system being used on movable illumination device of the present invention in 663 power supply circuits.
For conventional art, the effect that voltage switched system of the present invention reaches is described below.
When diverter switch SW1 is at " CH " shelves during conducting, the 4th resistance R 15 is unsettled, the output vdd voltage being connected with the second contact is by integrated regulator U1: the second resistance R 7 of the reference utmost point of TL431 and the 3rd resistance R 8 dividing potential drops regulation and control, according to Uo=2.5 (1+R7/R8) formula, when R7=R8, VDD is 5V output, just meets the battery charging to 4.3V.
When diverter switch SW1 is at " AC " shelves during conducting, the output vdd voltage being connected with the second contact is regulated and controled by the second resistance R 7 of the reference utmost point of TL431 and the mean value of the 4th resistance R 15 and the 3rd resistance R 8 dividing potential drops, equally according to Uo=2.5 (1+R7/R8) formula, work as R7=R8=5.6K, during R15=10K, VDD is 4.0V output, that is: just meet to LED lamp and directly power.
When SW1 is in " DC " when shelves, LED lamp 8 transfers to battery-powered, when connected civil power AC under this state, the vdd voltage being connected with the second contact is 4V, vdd voltage is less than or equal to cell voltage 3.5V deficiency through the pressure drop 0.5V of the 6th resistance R 9 and diode D7 and charges the battery, therefore, now in Switching Power Supply, VDD and battery give LED lamp 8 power supplies simultaneously, can extend battery to the time of LED lamp 8 power supplies.
As: the output 5.3V of DC power supply 5 of a Switching Power Supply single channel of take is example, and its load is respectively the rechargeable battery of 4.2V/2500mA and the LED lamp of 3.2V/500mA, according to traditional way, will produce following situation:
When diverter switch SW1 gets to charging CH shelves, the output 5.3V(of the DC power supply 5 of Switching Power Supply single channel is as Fig. 6) the about 4.7V of voltage that will be after R9, D7 is to powered battery.Maximum charging current is 600mA, and mean charging current 300mA is full of for approximately 8 hours, and conclusion is proper.But when diverter switch SW1 gets to civil power AC shelves, the output 5.3V of the DC power supply 5 of Switching Power Supply single channel is to LED lamp 8 power supplies of 3.2V/500mA.If by most economical way, the resistance of the 1.8 Ω/2W that also will connect and a triode, as pressure drop constant current, just meet the power reguirements of the LED lamp 8 of 3.2V/500mA, and such circuit in-fighting will produce the power consumption of 1W left and right.If adopt the integrated constant-current circuit of wide voltage input, in-fighting can reduce but will increase the cost more than approximately 1 yuan; In addition, switch is when civil power AC shelves, and the loop of charging, less than disconnecting, so the output 5.3V voltage of the DC power supply 5 of Switching Power Supply single channel is when giving 8 power supplies of LED lamp, is also given rechargeable battery powered.Cause like this two consequences: the one, the electric current of supplying with LED lamp be not constant be that saturation along with battery changes and changes.Its two be battery in long-term charged state, shorten battery.
Comprehensive the problems referred to above, in order to meet the gross power requirement of load LED lamp and rechargeable battery, in-fighting, the power designs of Switching Power Supply will strengthen, cost has just risen naturally, owing to supplying with the electric current of LED lamp, in the saturation along with battery, change, in order to guarantee the useful life of LED lamp, so be to use 60% left and right of electric current in its standard at design LED lamp electricity consumption electric current.Lamp is partially dark when AC shelves.
If adopt voltage switched system of the present invention just to can solve the problems referred to above, specifically:
When switch is got to charging CH shelves, the output 5.3V of the DC power supply 5 of Switching Power Supply single channel charges the battery.When switch is got to civil power AC shelves, the regulating action of voltage switch 6, as adopted the 4th resistance R 15 of voltage switch 6 to regulate, the output of the DC power supply 5 of Switching Power Supply single channel switches to 3.7V by 5.3V, through a constant-current circuit 7, gives LED lamp 8 power supplies.Because the voltage of 3.7V after the 6th resistance R 9 and diode D7 lower than the 3.5V voltage 3.5 of the battery (time be in electroless state) therefore power supply and battery be 0 or Negative Pressure Difference, can not fill electricity.The electric current of LED lamp yet can not change along with the saturation of battery and change.Due to the buffer action of D7, during 4.2V battery AC shelves, be can not power to LED.
When switch is got to DC shelves, regulating action due to the 4th resistance R 15, the DC power supply 5 of Switching Power Supply single channel is output as 3.7V, even if because the high therefore user person Wu of the voltage ratio supply power voltage of battery can not cause yet and therefore affect battery and power to LED lamp with civil power.
Because output voltage can switch to two groups, so when design Switching Power Supply, consider that group of maximum power output, just can meet the power requirement of whole product, the cost that designs like this Switching Power Supply has just got off naturally.
Above-described embodiment is preferably execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; and other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (4)
1. be used in the voltage switched system on movable illumination device, this voltage switched system is connected for the LED lamp (8) as movable illumination device with one, it is characterized in that: this voltage switched system comprises EMI circuit (1), the first current rectifying and wave filtering circuit (2), power conversion circuit (3), the second current rectifying and wave filtering circuit (4), DC power supply (5), voltage switch (6), constant-current circuit (7), PPM controller (9), under-voltage protecting circuit (10), protective circuit (11), battery charge controller (12) and battery (13), described EMI circuit (1) is successively through the first current rectifying and wave filtering circuit (2), power conversion circuit (3), the second current rectifying and wave filtering circuit (4), DC power supply (5), after voltage switch (6), be connected with described constant-current circuit (7), described voltage switched system is connected with LED lamp (8) by constant-current circuit (7), described the first current rectifying and wave filtering circuit (2) is also connected with power conversion circuit (3) after PPM controller (9), described DC power supply (5) is also connected with PPM controller (9), described voltage switch (6), battery charge controller (12), battery (13) are in turn connected to form a loop, and between described the first current rectifying and wave filtering circuit (2) and PPM controller (9), being also provided with a under-voltage protecting circuit (10) and the first current rectifying and wave filtering circuit (2) is to be connected with described PPM controller (9) after this under-voltage protecting circuit (10) again, at described DC power supply (5), be to be connected with PPM controller (9) after this protective circuit (11) with being also provided with a protective circuit (11) and DC power supply (5) between PPM controller (9), described voltage switch (6) comprises the first resistance (R6) again, the second resistance (R7), the 3rd resistance (R8), the 4th resistance (R15), integrated regulator (U1), electric capacity (C10), optical coupler (U2) and diverter switch (SW1), described the first resistance (R6), one end of the second resistance (R7) is connected with DC power supply (5) respectively, described the first resistance (R6) other end is connected with the input of optical coupler (U2), the output of described optical coupler (U2) respectively with electric capacity (C10) positive pole, integrated regulator (U1) negative electrode is connected, and described the second resistance (R7) other end is connected with electric capacity (C10) negative pole, described the 3rd resistance (R8) one end and electric capacity (C10) negative pole, integrated regulator (U1) is with reference to extremely connected, described the 3rd resistance (R8) other end is connected with integrated regulator (U1) anode and ground connection, described the 4th resistance (R15) one end is connected with electric capacity (C10) negative pole, and described diverter switch (SW1) comprises the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact, the 6th contact, the 7th contact and the 8th contact, described the first connection charging end, contact (CH), described the second contact connects civil power (AC) and is connected with the second resistance (R7) one end, described the 3rd contact connects battery (VCC), described the 4th contact connects LED lamp (8), and the first switch key (A1) is passed through in the first contact in described the 4th contact, the second contact, between the 3rd contact, switch, described the 5th contact is unsettled, described the 6th contact, the 7th contact connects respectively the 4th resistance (R15) other end, described the 8th contact and integrated regulator (U1) anode, DC power supply (5) or the 4th resistance (R15) other end are connected, and the second switch key (A2) is passed through in the 5th contact in described the 8th contact, the 6th contact, between the 7th contact, switch.
2. the voltage switched system being used on movable illumination device according to claim 1, is characterized in that: described protective circuit (11) comprises short-circuit protection circuit (111), current-limiting protection circuit (112) and output under-voltage protecting circuit (113).
3. the voltage switched system being used on movable illumination device according to claim 2, is characterized in that: the model of described optical coupler (U2) is PC817C.
4. the voltage switched system being used on movable illumination device according to claim 3, is characterized in that: the model of described integrated regulator (U1) is TL431.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210228175.9A CN102769957B (en) | 2012-07-02 | 2012-07-02 | Voltage switching system on movable illuminating lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210228175.9A CN102769957B (en) | 2012-07-02 | 2012-07-02 | Voltage switching system on movable illuminating lamp |
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| CN102769957A CN102769957A (en) | 2012-11-07 |
| CN102769957B true CN102769957B (en) | 2014-11-26 |
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| CN2582249Y (en) * | 2002-07-12 | 2003-10-22 | 罗冬 | Intelligent multifunctional starting battery charger |
| US20070040516A1 (en) * | 2005-08-15 | 2007-02-22 | Liang Chen | AC to DC power supply with PFC for lamp |
| CN101577993A (en) * | 2009-05-14 | 2009-11-11 | 复旦大学 | Solar energy LED drive control circuit for multiplexing DC/DC converter |
| KR101039366B1 (en) * | 2009-12-31 | 2011-06-08 | 이금성 | Guidance light apparatus using light emitting diode |
| TWM417479U (en) * | 2011-05-25 | 2011-12-01 | Acbel Polytech Inc | LED street lamp circuit with remote condition monitoring function |
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Effective date of registration: 20160804 Address after: 510000 Guangzhou, Zhejiang Province, Baiyun District, North Road, No. 1633, Guangzhou private science and Technology Park Road, No. 12, No. Patentee after: GUANGDONG DP LIGHTING ELECTRONIC TECHNOLOGY CO., LTD. Address before: 510000 Guangzhou, Zhejiang Province, Baiyun District, North Road, No. 1633, Guangzhou private science and Technology Park Road, No. 12, No. Patentee before: Guangzhou DP Lighting & Electronics Technology Co., Ltd. |