CN207304996U - Alternating current and direct current automatic switchover LED light - Google Patents

Alternating current and direct current automatic switchover LED light Download PDF

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Publication number
CN207304996U
CN207304996U CN201721255418.2U CN201721255418U CN207304996U CN 207304996 U CN207304996 U CN 207304996U CN 201721255418 U CN201721255418 U CN 201721255418U CN 207304996 U CN207304996 U CN 207304996U
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constant
current
current sources
led light
circuit
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Expired - Fee Related
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CN201721255418.2U
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Chinese (zh)
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周安平
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Abstract

The utility model provides a kind of exchange,Direct current automatic switchover LED light,It includes AC constant-current sources and DC constant-current sources,Automatic switch-over circuit is equipped between the AC constant-current sources and DC constant-current sources,The automatic switch-over circuit is connected with LED light,The automatic switch-over circuit includes the clamp resistance RVOP for being arranged on an output terminal of AC constant-current sources,Triggering end of the other end of the clamp resistance RVOP then directly with DC constant-current sources is connected,The clamp resistance RVOP is in the AC constant-current sources output voltage,So that DC constant-current sources are in sleep state,In the AC constant-current sources not output voltage,Then so that DC constant-current sources are in running order,By setting clamp resistance between AC constant-current sources and DC constant-current sources,Realize the instantaneous switching between AC constant-current sources and DC constant-current sources,So that LED light is in continual illumination condition.

Description

Alternating current and direct current automatic switchover LED light
Technical field
Lighting technical field is the utility model is related to, more particularly, to a kind of alternating current and direct current automatic switchover LED light.
Background technology
Global energy shortage and environmental pollution shows especially prominent in the China of rapid economic development, energy saving and ring Guarantor is that China realizes Sustainable Socioeconomic Development institute urgent problem.Annual illumination power consumption accounts for whole electric energy The 12% ~ 15% of consumption, the rich and influential family as energy consumption, it is necessary to search out method as early as possible and solve this problem.At present, there are two kinds Method can reduce the consumption of social resources:When save the energy, reduce waste, i.e., by science and technology and production technology development, The more energy-saving product of generation, as lower power demand, preferable drive characteristic, very fast response speed, compared with high anti-seismic ability, compared with Long life, the LED lamps of luminous efficiency that is environmentally protective and constantly quickly improving;Second, utilize science and technology, such as people The driving of body kinetic energy or solar energy carrys out some bright light sources.
At present, under normal circumstances, LED is powered by AC power, therefore, corresponding LED drive circuit It is designed primarily directed to AC power, and in some cases, LED can be also powered by DC power supply, then phase The LED drive current source answered is also to be designed according to DC power supply, both cannot be compatible.
But in some special occasions, on naval vessel, LED lamp is needed when AC power breaks down, and is changed by meeting an urgent need Power supply is powered, and emergency power supply is then DC power supply, it is therefore desirable to design one kind can automatically switch direct current with exchange supply LED light electrically, to adapt to the demand of the environment such as naval vessel.
Utility model content
In order to overcome the technical deficiency of the above, the utility model provides a kind of alternating current and direct current automatic switchover LED light.
The utility model provides a kind of alternating current and direct current automatic switchover LED light, it includes AC constant-current sources and DC constant-current sources, institute State and automatic switch-over circuit is equipped between AC constant-current sources and DC constant-current sources, the automatic switch-over circuit is connected with LED light, described automatic Switching circuit includes being arranged on the clamp resistance RVOP of an output terminal of AC constant-current sources, the other end of the clamp resistance RVOP Then the triggering end directly with DC constant-current sources is connected, and the clamp resistance RVOP is in the AC constant-current sources output voltage so that DC Constant-current source is in sleep state, in the AC constant-current sources not output voltage, then so that DC constant-current sources are in running order.
The DC constant-current sources include constant current chip U2 and direct-flow input circuit, triggering end and the clamper electricity of constant current chip U2 RVOP connections are hindered, the control terminal of constant current chip U2 is connected with on-off circuit, and the output terminal of direct-flow input circuit has on-off circuit control Break-make processed, and provide power supply to constant current chip U2.
Direct-flow input circuit includes sequentially connected input terminal, rectification circuit, filter circuit, the output of the filter circuit It is connected after the series inductance L3 of end with on-off circuit.
The on-off circuit includes field-effect tube M1, and the G poles of field-effect tube M1 are connected with the door end of constant current chip U2, field effect Should the D poles of pipe M1 be connected between inductance L3 and diode D10, the S poles series resistance R15 ground connection of field-effect tube M1.
Connected respectively by resistance R16 and diode D10 between the triggering end of the clamp resistance RVOP and constant current chip U2 Connect and resistance R17 is grounded.
The model SN3948 of the constant current chip U2.
The AC constant-current sources include constant current chip U1 and ac-dc converter circuit.
The model RED2401 of the constant current chip U1.
The DC constant-current sources become one with the LED light.
The AC constant-current sources can be external.
The beneficial effects of the utility model:It is permanent in AC by setting clamp resistance between AC constant-current sources and DC constant-current sources When there is output voltage in stream source, then so that DC constant-current sources enter resting state, and when AC constant-current sources are without output voltage, then the clamper Resistance causes DC constant-current sources to obtain enabling signal, directly switches DC constant current source power supplies, and has output voltage to stand in AC constant-current sources one Stop DC constant-current sources, realize the instantaneous switching between AC constant-current sources and DC constant-current sources so that LED light is in continual photograph Bright state.
Brief description of the drawings
Fig. 1 is the circuit diagram of the AC constant-current sources of the utility model.
Fig. 2 is the circuit diagram of the DC constant-current sources of the utility model.
Fig. 3 is the circuit diagram of the LED light of the utility model.
Fig. 4, Fig. 5, Fig. 6, Fig. 7 are the schematic diagram after the cutting of Fig. 1.
Embodiment
The utility model embodiment is described further below in conjunction with the accompanying drawings:
As shown in the figure, the utility model provides a kind of alternating current and direct current automatic switchover LED light, it includes AC constant-current sources and DC Constant-current source, is equipped with automatic switch-over circuit between the AC constant-current sources and DC constant-current sources, the automatic switch-over circuit connects with LED light Connect, the automatic switch-over circuit includes the clamp resistance RVOP for being arranged on an output terminal of AC constant-current sources, the clamp resistance Triggering end of the other end of RVOP then directly with DC constant-current sources is connected, and the clamp resistance RVOP exports electricity in the AC constant-current sources During pressure so that DC constant-current sources are in sleep state, in the AC constant-current sources not output voltage, then so that DC constant-current sources are in work Make state.
When AC constant-current sources, DC constant-current sources are both powered up, AC constant-current sources and DC constant-current sources start to start, due to DC constant-current sources RVOP clamp voltages are set, and when the driving of DC constant-current sources detects RVOP clamp voltages, DC constant-current sources are in sleep state, DC constant currents Source is driven without any output, and LED shines drives output to realize by AC constant-current sources.
When AC constant-current sources dead electricity is pressed, DC constant-current sources cannot get RVOP clamp voltages, DC constant-current sources from sleep state at once Into normal operating conditions, LED has the output of DC constant-current sources to shine.
During its feature when AC constant-current sources, DC constant-current sources are powered at the same time, AC constant-current source priority tasks have output, DC constant-current sources In sleep state without output.
AC constant-current source dead electricity, DC constant-current sources have output at once, and LED shines in uninterrupted state.
The DC constant-current sources include constant current chip U2 and direct-flow input circuit, triggering end and the clamper electricity of constant current chip U2 RVOP connections are hindered, the control terminal of constant current chip U2 is connected with on-off circuit, and the output terminal of direct-flow input circuit has on-off circuit control Break-make processed, and provide power supply to constant current chip U2.
Direct-flow input circuit includes sequentially connected input terminal, rectification circuit, filter circuit, the output of the filter circuit It is connected after the series inductance L3 of end with on-off circuit.
The on-off circuit includes field-effect tube M1, and the G poles of field-effect tube M1 are connected with the door end of constant current chip U2, field effect Should the D poles of pipe M1 be connected between inductance L3 and diode D10, the S poles series resistance R15 ground connection of field-effect tube M1.
Connected respectively by resistance R16 and diode D10 between the triggering end of the clamp resistance RVOP and constant current chip U2 Connect and resistance R17 is grounded.
The model SN3948 of the constant current chip U2.
The G poles of the GATE termination field-effect tube M1 of constant current chip U2, the S poles of field-effect tube M1 and the CS ends of constant current chip U2 Connection, and be grounded by resistance R15, the TOFF ends series resistance R14 ground connection of constant current chip U2, the D poles difference of field-effect tube M1 Connect one end of inductance L3 and the anode of diode D10, the output terminal of the other end of inductance L3 then with rectifier bridge DG is connected, rectifier bridge Any one input terminal inline fuse FUS2 of DG, the parallel electrolytic capacitance C12 between the output terminal of rectifier bridge DG, constant current core The VCC ends of piece U2 are connected by the other end of resistance R13 and the L3 of inductance, and shunt capacitance C13 is grounded, the moon of diode D10 The positive input terminal of pole and LED light connects, and is parallel with the electrolytic capacitor C14 of ground connection, the resistance R16 being connected in series of ground connection successively The output terminal of AC constant-current sources is followed by with resistance R17, the OVP ends series connection clamp resistance RVOP of constant current chip U2, constant current chip U2's FB ends directly connect the anode of LED light, and resistance R18 is in series between the anode and rectifier bridge DG of LED light.In AC constant-current sources without output When, then exported and powered by DC constant-current sources.
The AC constant-current sources include constant current chip U1 and ac-dc converter circuit.The model of the constant current chip U1 RED2401。
220AC input terminals, are sequentially connected in series fuse FUS1, inductance L1 with forming diode D1, D2, D3 of rectifier bridge all the way Connected with the input terminal of D4, the another way that shunt capacitance C1 and capacitance C2,220AC input terminal are distinguished at the both ends of inductance L1 is then divided Not by being grounded after capacitance C11 and capacitance C4 is followed by COM ends, parallel electrolytic capacitance C9 between the output terminal of rectifier bridge, rectification The positive output end of bridge then connects the collector and resistance R7 of triode Q1 respectively, and the base series resistor R1 of triode Q1 is followed by becoming One end of the first secondary windings of depressor T1, the emitter of triode Q1 then one end with the second main winding of transformer T1 respectively And the other end connection of the first secondary windings of transformer T1, one end of the second main winding of transformer are connected with inductance L2, The other end of the first secondary windings of transformer T1 is connected with the collector of triode Q2, the first master of inductance L2 and edge device T2 One end connection of winding, the base series resistor R2 of triode Q2 connect one end of second subprime winding, the emitter of triode Q2 The other end of second subprime winding is connect, parallel diode D5, triode Q2 wherein between the emitter and collector of triode Q1 Emitter and collector between shunt capacitance C8 and diode D6 successively, the other end of the second subprime winding of transformer T2 is then It is sequentially connected in series resistance R3 and resistance R4 is connected with COM ends, and capacitance C3 is equipped between 220AC input terminals, the of transformer T1 One main winding is connected with the TX1 ends of constant current chip U1 and TX2 ends respectively, the GS ends of constant current chip U1 then with transformer T2 first The other end connection of main winding, and COM ends are connect by resistance R6 and resistance R5 respectively, the VFB ends of constant current chip U1 then series electrical It is connected after resistance R10 with resistance R8, and passes sequentially through resistance R12 and capacitance C6 and connect COM ends, the vdd terminal series electrical of constant current chip U1 It is connected after resistance R9 with resistance R8, and passes sequentially through resistance R11 and capacitance C5 and connect COM ends, electricity in parallel between resistance R8 and resistance R10 Hold C7 and connect COM ends, resistance R8 is connected in series with resistance R7, parallel diode D7 between inductance L2 and resistance R7 and resistance R8.Become Anode of the first secondary windings of depressor T2 then with diode D8 is connected, the second subprime winding of transformer T2 then with diode D9 Anode connection, the cathode of diode D8 and diode D9 is then connected with clamp resistance RVOP, first level of transformer T2 around The other end of group and second subprime winding simultaneously together with connect the anode of LED light, and the cathode of diode D8 and the anode of LED light it Between be equipped with electrolytic capacitor C10 and resistance R12 successively after, connect after the cathode series diode D11 of diode D8 with the cathode of LED light Connect, power supply is provided by AC constant-current sources.
The LED that the LED light has some series connection is composed in parallel.
In the cathode point solution capacitance C10 and resistance R12 in parallel successively of two diode D8 and diode D9.
The DC constant-current sources become one with the LED light, and both are provided in into an entirety, DC constant-current sources On the same aluminum substrate of LED, volume is saved.
AC constant-current sources independently its external output+,-, use be connected with LED light source and connects lower end face and inserts connection.
Embodiment is not construed as the limitation to the utility model, any spiritual improvements introduced based on the utility model, All should be within the scope of protection of the utility model.

Claims (10)

1. a kind of alternating current and direct current automatic switchover LED light, it includes AC constant-current sources and DC constant-current sources, and the AC constant-current sources are permanent with DC Automatic switch-over circuit is equipped between stream source, the automatic switch-over circuit is connected with LED light, it is characterised in that:The automatic switchover Circuit includes the clamp resistance RVOP for being arranged on an output terminal of AC constant-current sources, and the other end of the clamp resistance RVOP is then straight Connect and be connected with the triggering end of DC constant-current sources, the clamp resistance RVOP is in the AC constant-current sources output voltage so that DC constant currents Source is in sleep state, in the AC constant-current sources not output voltage, then so that DC constant-current sources are in running order.
2. alternating current and direct current automatic switchover LED light according to claim 1, it is characterised in that the DC constant-current sources include perseverance Stream chip U2 and direct-flow input circuit, the triggering end of constant current chip U2 are connected with clamp resistance RVOP, the control of constant current chip U2 End processed is connected with on-off circuit, and the output terminal of direct-flow input circuit has on-off circuit to control break-make, and constant current chip U2 is provided Power supply.
3. alternating current and direct current automatic switchover LED light according to claim 2, it is characterised in that direct-flow input circuit include according to Input terminal, rectification circuit, the filter circuit of secondary connection, connect with on-off circuit after the output terminal series inductance L3 of the filter circuit Connect.
4. the alternating current and direct current automatic switchover LED light according to Claims 2 or 3, it is characterised in that the on-off circuit bag Field-effect tube M1 is included, the G poles of field-effect tube M1 are connected with the door end of constant current chip U2, and the D poles of field-effect tube M1 are connected on inductance L3 Between diode D10, the S poles series resistance R15 ground connection of field-effect tube M1.
5. alternating current and direct current automatic switchover LED light according to claim 4, it is characterised in that the clamp resistance RVOP with It is connected respectively by resistance R16 with diode D10 between the triggering end of constant current chip U2 and resistance R17 is grounded.
6. the alternating current and direct current automatic switchover LED light according to Claims 2 or 3, it is characterised in that the constant current chip U2 Model SN3948.
7. alternating current and direct current automatic switchover LED light according to claim 1, it is characterised in that the AC constant-current sources include perseverance Flow chip U1 and ac-dc converter circuit.
8. alternating current and direct current automatic switchover LED light according to claim 7, it is characterised in that the type of the constant current chip U1 Number it is RED2401.
9. alternating current and direct current automatic switchover LED light according to claim 1, it is characterised in that the DC constant-current sources with it is described LED light becomes one.
10. alternating current and direct current automatic switchover LED light according to claim 1, it is characterised in that the AC constant-current sources can be outer Connect.
CN201721255418.2U 2017-09-28 2017-09-28 Alternating current and direct current automatic switchover LED light Expired - Fee Related CN207304996U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721255418.2U CN207304996U (en) 2017-09-28 2017-09-28 Alternating current and direct current automatic switchover LED light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721255418.2U CN207304996U (en) 2017-09-28 2017-09-28 Alternating current and direct current automatic switchover LED light

Publications (1)

Publication Number Publication Date
CN207304996U true CN207304996U (en) 2018-05-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107613611A (en) * 2017-09-28 2018-01-19 周安平 Alternating current and direct current automatic switchover LED
CN109510287A (en) * 2018-11-21 2019-03-22 中山市宝利金电子有限公司 A kind of intelligent charger automatically switching charge and discharge system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107613611A (en) * 2017-09-28 2018-01-19 周安平 Alternating current and direct current automatic switchover LED
CN107613611B (en) * 2017-09-28 2023-10-27 周安平 AC/DC automatic switching LED lamp
CN109510287A (en) * 2018-11-21 2019-03-22 中山市宝利金电子有限公司 A kind of intelligent charger automatically switching charge and discharge system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180501

Termination date: 20210928

CF01 Termination of patent right due to non-payment of annual fee