CN205249550U - A width voltage AC drive circuit for LED power - Google Patents
A width voltage AC drive circuit for LED power Download PDFInfo
- Publication number
- CN205249550U CN205249550U CN201520940264.5U CN201520940264U CN205249550U CN 205249550 U CN205249550 U CN 205249550U CN 201520940264 U CN201520940264 U CN 201520940264U CN 205249550 U CN205249550 U CN 205249550U
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- circuit
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- power supply
- current drive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a width voltage AC drive circuit for LED power, include: rectifier circuit for with exporting rectified alternating current after the alternating current rectification, partial pressure detection circuitry, its one end and rectifier circuit's DC output is connected, and the other end is connected to first switch tube Q1's base, the reduction voltage circuit, its one end and rectifier circuit's DC output is connected, and the other end is connected to second switch pipe Q2's base, cluster parallel switches circuit, its one end is connected with first switch tube Q1 and second switch pipe Q2's projecting pole, and the other end is connected with two sets of constant -current drive circuit, when the input alternating current was the low -voltage, first switch tube Q1 switched on, and the second switch pipe Q2 end, cluster parallel switches circuit switches two sets of constant -current drive circuit for parallel connection, when the input alternating current was the high voltage, the second switch pipe Q2 switched on, and first switch tube Q1 ends, cluster parallel switches circuit switches two sets of constant -current drive circuit for the series connection.
Description
Technical field
The utility model has related to a kind of LED power driving circuit, has related in particular to a kind of for LED electricityThe wide voltage AC driving circuit in source.
Background technology
DoB (DriveronBoard) or Driverless, namely our usually said " going " electricitySource, is not non-transformer in fact, but a kind of new type of drive that is different from traditional switch power supply isA kind of new type of drive deriving from based on LED characteristic. Say from intelligent lighting, compare traditionSwitching Power Supply drive, linear IC drives the innate advantage that has it. Conventional power source also can realize intelligence and shineBright, but the cost of the cost of paying or the system integration far exceedes linearity.
In sum, no matter high from stability, security, performance parameter and cost, DoB linearityIC is a kind of LED drive scheme of high performance-price ratio. Adopt the light fixture of DoB power source design carrying out North AmericaNational security certification, for example, when UL authenticates, power supply, without independent certification, only needs light fixture finished product by recognizingCard, greatly saves certification cost and shortens authentication period.
Utility model content
Technical problem underlying to be solved in the utility model is to provide a kind of wide voltage for LED power supplyAC driving circuit, can be applicable to the voltage environment of 100V-528V, and has removed traditional constant current fromDriving power, has dwindled small product size, simplifies technique.
In order to solve above-mentioned volume technical problem, the utility model provides a kind of wide electricity for LED power supplyPress AC driving circuit, comprising:
Rectification circuit, for by output ripple direct current after AC rectification;
Voltage-dividing detection circuit, its one end is connected with the DC output end of described rectification circuit, and the other end connectsTo the base stage of the first switching tube Q1;
Reduction voltage circuit, its one end is connected with the DC output end of described rectification circuit, and the other end is connected toThe base stage of two switching tube Q2;
Serial and parallel switching circuit, the transmitting of its one end and described the first switching tube Q1 and second switch pipe Q2The utmost point connects, and the other end is connected with two groups of constant-current drive circuits;
In the time that input AC electricity is low-voltage, described the first switching tube Q1 conducting, second switch pipe Q2 cutsOnly; Serial and parallel switching circuit switches to described two groups of constant-current drive circuits to be connected in parallel;
In the time that input AC electricity is high voltage, described second switch pipe Q2 conducting, the first switching tube Q1 cutsOnly; Serial and parallel switching circuit switches to described two groups of constant-current drive circuits to be connected in series.
In a preferred embodiment: described serial and parallel switching circuit comprises a relay, it comprises by two groupsThe first movable switch J1A of coil control and the second movable switch JIB; As described the first switching tube Q1When conducting, relay work; In the time of described second switch pipe Q2 conducting, relay is not worked.
In a preferred embodiment: the normally opened contact of described the first movable switch J1A and the second movable switchThe normally-closed contact of J1B connects; The normally opened contact of described the second movable switch J1B and described rectification circuitDC output end connects.
In a preferred embodiment: it is defeated for the first constant-current drive circuit in described two groups of constant-current drive circuitsEnter end and be connected with the DC output end of described rectification circuit, output is respectively with the first movable switch J1A'sThe normally-closed contact of normally opened contact, the second movable switch J1B connects.
In a preferred embodiment: it is defeated for the second constant-current drive circuit in described two groups of constant-current drive circuitsEnter end and be connected with the normally-closed contact of described the second movable switch J1B, its output head grounding.
In a preferred embodiment: described voltage-dividing detection circuit comprise the R1, the RV1 that are connected in series, RV2,RV3; Wherein RI is resistance, and RV1, RV2, RV3 are piezo-resistance or voltage-stabiliser tube.
In a preferred embodiment: described reduction voltage circuit comprises the resistance R 3, R4, the R11 that are connected in series.
In a preferred embodiment: described constant-current drive circuit comprises linear constant current IC, for LED module suppliesElectricity.
In a preferred embodiment: described AC driving circuit and LED chip share a slice aluminium base.
Compared to prior art, the technical solution of the utility model possesses following beneficial effect:
1. the utility model provides a kind of wide voltage AC driving circuit for LED power supply, by establishingPut serial and parallel switching circuit, making two constant-current drive circuits in the time of high voltage is series connection, low-voltageTime two constant-current drive circuits be state in parallel. What therefore, constant-current drive circuit can be in high pressure and low pressureUnder condition, normally work, specifically, can normally work at the voltage range of 100V-528V. CanAdapt to the household voltage of most countries in the world, possessed broad applicability.
2. the utility model provides a kind of wide voltage AC driving circuit for LED power supply, has removed fromThe constant-current driving power supply that conventional lamp is used, changes linear constant current IC into and drives, can by whole circuit withLED chip is sitting on a slice aluminium base jointly, has dwindled small product size, has simplified technique.
Brief description of the drawings
Fig. 1 is the circuit diagram of wide voltage AC driving circuit in the utility model preferred embodiment.
Detailed description of the invention
Below with detailed description of the invention, the utility model is described further by reference to the accompanying drawings.
With reference to figure 1, a kind of wide voltage AC driving circuit for LED power supply, comprising:
Rectification circuit, in the present embodiment, described rectification circuit is bridge rectifier. Alternating current is through protectingDanger silk, enters output ripple direct current after rectifier bridge stack D1-D4;
Voltage-dividing detection circuit, its one end is connected with the DC output end of described rectification circuit, and the other end connectsTo the base stage of the first switching tube Q1; Described voltage-dividing detection circuit comprise the R1, the RV1 that are connected in series, RV2,RV3; Wherein RI is resistance, and RV1, RV2, RV3 are piezo-resistance or voltage-stabiliser tube. When described direct currentVoltage when lower, this DC voltage cannot puncture RV1, RV2, RV3 after R1 step-down, because ofThe two ends of this pull down resistor R2 cannot obtain voltage, the first switching tube Q1 cut-off. When described galvanicWhen voltage is higher, this DC voltage punctures RV1, RV2, RV3 after R1 step-down, therefore drop-downThe two ends of resistance R 2 obtain voltage, the first switching tube Q1 conducting.
Reduction voltage circuit, its one end is connected with the DC output end of described rectification circuit, and the other end is connected toThe base stage of two switching tube Q2; Described reduction voltage circuit comprises the resistance R 3, R4, the R11 that are connected in series. WhenWhen one switching tube Q1 cut-off, this direct current acts on the base stage of second switch pipe Q2 through decompression network,Second switch pipe Q2 conducting. In the time of the first switching tube Q1 conducting, the cut-off of second switch pipe.
Serial and parallel switching circuit, the transmitting of its one end and described the first switching tube Q1 and second switch pipe Q2The utmost point connects, and the other end is connected with two groups of constant-current drive circuits;
In the time that input AC electricity is low-voltage, described the first switching tube Q1 conducting, second switch pipe Q2 cutsOnly; Serial and parallel switching circuit switches to described two groups of constant-current drive circuits to be connected in parallel;
In the time that input AC electricity is high voltage, described second switch pipe Q2 conducting, the first switching tube Q1 cutsOnly; Serial and parallel switching circuit switches to described two groups of constant-current drive circuits to be connected in series.
In order to realize above-mentioned switching mode, described serial and parallel switching circuit comprises a relay, and it comprisesBy the first movable switch J1A and the second movable switch JIB of two groups of coil controls. When described the first switchWhen pipe Q1 conducting, relay work; In the time of described second switch pipe Q2 conducting, relay is not worked.
The normally-closed contact of the normally opened contact of described the first movable switch J1A and the second movable switch J1B connectsConnect; Described the second normally opened contact of movable switch J1B and the DC output end of described rectification circuit are connected.
Its input of the first constant-current drive circuit and described rectified current in described two groups of constant-current drive circuitsThe DC output end on road connects, and output is lived with the normally opened contact, second of the first movable switch J1A respectivelyThe normally-closed contact of moving switch J1B connects.
Its input of the second constant-current drive circuit in described two groups of constant-current drive circuits and described second is livedThe normally-closed contact of moving switch J1B connects, its output head grounding.
Used after above-mentioned setting, in the time that input AC electricity is low-voltage state, the first switching tube Q1 cutsOnly, second switch pipe Q2 conducting, described relay work. Therefore often opening of the first movable switch J1AThe closing of contact, the normally opened contact closure of the second movable switch J1B. The direct current of described rectification circuit outputBe divided into two-way, a road connects from the normally opened contact of the first movable switch J1A after the first constant-current drive circuitGround; Another road is from normally opened contact ground connection after the second constant-current drive circuit of the second movable switch J1B;Therefore,, in the time of low-voltage, the first constant-current drive circuit and the second constant-current drive circuit are in state in parallel.
And in the time that input AC electricity is high-voltage state, the first switching tube Q1 conducting, second switch pipe Q2Cut-off, described relay is not worked. Therefore the normally-closed contact closure of the first movable switch J1A, second livesThe normally-closed contact closure of moving switch J1B. The direct current of described rectification circuit output drives through the first constant currentAfter circuit, from the normally-closed contact of the second movable switch J1B, input ground connection after the second constant-current drive circuit; CauseThis, in the time of high voltage, the first constant-current drive circuit and the second constant-current drive circuit are in series connection.
Above-mentioned a kind of wide voltage AC driving circuit for LED power supply, switches by connection in series-parallel is setCircuit, making two constant-current drive circuits in the time of high voltage is series connection, when low-voltage, two constant currents are drivenMoving circuit is state in parallel. Therefore, can be under the condition of high pressure and the low pressure normal work of constant-current drive circuitDo, specifically, can normally work at the voltage range of 120V-528V. Can adapt to large in the worldThe household voltage of majority state, has possessed broad applicability.
In the present embodiment, described constant-current drive circuit comprises linear constant current IC, is the power supply of LED module. InstituteTo have removed the constant-current driving power supply that conventional lamp is used from, whole circuit and LED chip can be sat jointlyOn a slice aluminium base, dwindle small product size, simplify technique.
The above, be only the utility model preferred embodiment, not with this limit the utility model implementScope, the equivalence of doing according to the technical solution of the utility model and description changes and modifies, and all shouldBelong to the scope that the utility model is contained.
Claims (9)
1. for a wide voltage AC driving circuit for LED power supply, it is characterized in that comprising:
Rectification circuit, for by output ripple direct current after AC rectification;
Voltage-dividing detection circuit, its one end is connected with the DC output end of described rectification circuit, and the other end connectsTo the base stage of the first switching tube Q1;
Reduction voltage circuit, its one end is connected with the DC output end of described rectification circuit, and the other end is connected toThe base stage of two switching tube Q2;
Serial and parallel switching circuit, the transmitting of its one end and described the first switching tube Q1 and second switch pipe Q2The utmost point connects, and the other end is connected with two groups of constant-current drive circuits;
In the time that input AC electricity is low-voltage, described the first switching tube Q1 conducting, second switch pipe Q2 cutsOnly; Serial and parallel switching circuit switches to described two groups of constant-current drive circuits to be connected in parallel;
In the time that input AC electricity is high voltage, described second switch pipe Q2 conducting, the first switching tube Q1 cutsOnly; Serial and parallel switching circuit switches to described two groups of constant-current drive circuits to be connected in series.
2. a kind of wide voltage AC driving circuit for LED power supply according to claim 1, itsBe characterised in that: described serial and parallel switching circuit comprises a relay, it comprises by of two groups of coil controlsOne movable switch J1A and the second movable switch JIB; In the time of described the first switching tube Q1 conducting, relayWork; In the time of described second switch pipe Q2 conducting, relay is not worked.
3. a kind of wide voltage AC driving circuit for LED power supply according to claim 2, itsBe characterised in that: the normally closed of the normally opened contact of described the first movable switch J1A and the second movable switch J1B touchedPoint connects; Described the second normally opened contact of movable switch J1B and the DC output end of described rectification circuit connectConnect.
4. according to a kind of wide voltage AC driving circuit for LED power supply claimed in claim 3, its spyLevy and be: its input of the first constant-current drive circuit and described rectification in described two groups of constant-current drive circuitsThe DC output end of circuit connects, output respectively with the normally opened contact, second of the first movable switch J1AThe normally-closed contact of movable switch J1B connects.
5. according to a kind of wide voltage AC driving circuit for LED power supply claimed in claim 4, its spyLevy and be: its input of the second constant-current drive circuit and described second in described two groups of constant-current drive circuitsThe normally-closed contact of movable switch J1B connects, its output head grounding.
6. a kind of wide voltage AC driving circuit for LED power supply according to claim 1, itsBe characterised in that: described voltage-dividing detection circuit comprises R1, the RV1, RV2, the RV3 that are connected in series; Wherein RIFor resistance, RV1, RV2, RV3 are piezo-resistance or voltage-stabiliser tube.
7. a kind of wide voltage AC driving circuit for LED power supply according to claim 1, itsBe characterised in that: described reduction voltage circuit comprises the resistance R 3, R4, the R11 that are connected in series.
8. a kind of wide voltage AC driving circuit for LED power supply according to claim 1, itsBeing characterised in that: described constant-current drive circuit comprises linear constant current IC, is the power supply of LED module.
9. exchange and drive according to a kind of wide voltage for LED power supply described in any one in claim 1-8Moving circuit, is characterized in that: described AC driving circuit and LED chip share a slice aluminium base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940264.5U CN205249550U (en) | 2015-11-23 | 2015-11-23 | A width voltage AC drive circuit for LED power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940264.5U CN205249550U (en) | 2015-11-23 | 2015-11-23 | A width voltage AC drive circuit for LED power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205249550U true CN205249550U (en) | 2016-05-18 |
Family
ID=55948608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520940264.5U Withdrawn - After Issue CN205249550U (en) | 2015-11-23 | 2015-11-23 | A width voltage AC drive circuit for LED power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205249550U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792474A (en) * | 2015-11-23 | 2016-07-20 | 厦门兴恒隆股份有限公司 | Wide-voltage AC drive circuit for LED power supply |
| CN107087331A (en) * | 2017-06-30 | 2017-08-22 | 台州市椒光照明有限公司 | A kind of Width funtion LED lamp drive circuit with emergency function |
| CN107094337A (en) * | 2017-06-30 | 2017-08-25 | 台州市椒光照明有限公司 | A kind of light-operated Width funtion LED lamp drive circuit |
| CN107148120A (en) * | 2017-06-30 | 2017-09-08 | 台州市椒光照明有限公司 | A kind of induction type Width funtion LED lamp drive circuit |
-
2015
- 2015-11-23 CN CN201520940264.5U patent/CN205249550U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792474A (en) * | 2015-11-23 | 2016-07-20 | 厦门兴恒隆股份有限公司 | Wide-voltage AC drive circuit for LED power supply |
| CN105792474B (en) * | 2015-11-23 | 2018-06-15 | 厦门兴恒隆股份有限公司 | A kind of Width funtion AC driving circuit for LED power |
| CN107087331A (en) * | 2017-06-30 | 2017-08-22 | 台州市椒光照明有限公司 | A kind of Width funtion LED lamp drive circuit with emergency function |
| CN107094337A (en) * | 2017-06-30 | 2017-08-25 | 台州市椒光照明有限公司 | A kind of light-operated Width funtion LED lamp drive circuit |
| CN107148120A (en) * | 2017-06-30 | 2017-09-08 | 台州市椒光照明有限公司 | A kind of induction type Width funtion LED lamp drive circuit |
| CN107094337B (en) * | 2017-06-30 | 2020-08-28 | 台州市椒光照明有限公司 | Light-operated wide voltage LED lamp drive circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160518 Effective date of abandoning: 20180615 |