CN204119571U - LED drive circuit and use the LED of this drive circuit - Google Patents
LED drive circuit and use the LED of this drive circuit Download PDFInfo
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- CN204119571U CN204119571U CN201420469871.3U CN201420469871U CN204119571U CN 204119571 U CN204119571 U CN 204119571U CN 201420469871 U CN201420469871 U CN 201420469871U CN 204119571 U CN204119571 U CN 204119571U
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- 239000011324 bead Substances 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
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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 discloses a kind of LED drive circuit and use the LED of this drive circuit, LED drive circuit comprises: diode D1, D2, D3 and D4, the negative pole end of diode D1 is connected with positive output end with the negative pole end of diode D3, the positive terminal of diode D1 is connected with the negative pole end of diode D4, the positive terminal of diode D4 is connected with negative output terminal with the positive terminal of diode D2, and the negative pole end of diode D2 is connected with the positive terminal of diode D3; Electric capacity C1, resistance R1, electric capacity C2 and resistance R2, one end connecting interface L1, L2 after electric capacity C1 and resistance R1 parallel connection, the other end is connected between diode D1, D4, and one end connecting interface L3, L4 after electric capacity C2 and resistance R2 parallel connection, the other end is connected between diode D3, D2.LED drive circuit of the present utility model, required LED lamp bead quantity is few, and good economy performance, has electroshock-proof function simultaneously.
Description
Technical field
The utility model relates to lighting device, particularly relates to a kind of LED drive circuit and uses the LED of this drive circuit.
Background technology
LED, as a forth generation lighting source, has energy-conservation and life-span advantage significantly.For illuminating product, all slowly traditional fluorescent tube is being transformed to LED product.And traditional fluorescent lamp, in order to activate high-pressure mercury ion laser printer fluorescent material, fluorescent tube periphery all have matched electric ballast, and general electric ballast can drag branched fluorescent tube by one-to-one or.Electric ballast, by switching circuit, produces high pressure concussion, power to old-fashioned mercurous fluorescent tube, and our present LED lamp tube is all single-ended or both end power supplying, is all directly to connect civil power, does not need electric ballast.As connect electric ballast, LED can be burnt on the contrary.The conventional method of present stage is: remove electric ballast, rewiring, then change the single-ended of current trend or both-end LED lamp tube.Which adds a lot of track remodelling expense, hinder the universal of LED.
There is following shortcoming in the LED drive circuit directly connecting electric ballast of prior art, one is that voltage after utilizing rectifier bridge is powered, and its voltage is high, and lamp pearl quantity is many, and most 160-200PCS is uneconomical; Two is without electroshock-proof function, and when mounted LED lamp, in energising situation, one end is loaded onto, and one end hand is run into and can be got an electric shock.
Summary of the invention
For above-mentioned prior art present situation, technical problem to be solved in the utility model is, provides a kind of LED drive circuit, and the LED lamp bead quantity required for it is few, and good economy performance, has electroshock-proof function simultaneously.
Another technical problem to be solved in the utility model is, provides a kind of LED using this drive circuit.
In order to solve the problems of the technologies described above, a kind of LED drive circuit provided by the utility model, comprising:
Interface L1, interface L2, interface L3 and interface L4;
Positive output end and negative output terminal;
Diode D1, diode D2, diode D3 and diode D4, the negative pole end of diode D1 is connected with described positive output end with the negative pole end of diode D3, the positive terminal of diode D1 is connected with the negative pole end of diode D4, the positive terminal of diode D4 is connected with described negative output terminal with the positive terminal of diode D2, and the negative pole end of diode D2 is connected with the positive terminal of diode D3;
Electric capacity C1, resistance R1, electric capacity C2 and resistance R2, electric capacity C1 is connected described interface L1 and described interface L2 with one end after resistance R1 parallel connection, the other end is connected between the positive terminal of described diode D1 and the negative pole end of described diode D4, electric capacity C2 is connected described interface L3 and described interface L4 with one end after resistance R2 parallel connection, and the other end is connected between the positive terminal of described diode D3 and the negative pole end of described diode D2.
Wherein in an embodiment, described LED drive circuit also comprises:
Between the negative pole end that the positive terminal of electric capacity C3, electric capacity C3 is connected to described diode D1 and described positive output end, between the positive terminal that the negative pole end of electric capacity C3 is connected to described diode D4 and described negative output terminal; With
Between the negative pole end that the positive terminal of electric capacity C4, electric capacity C4 is connected to described diode D3 and described positive output end, between the positive terminal that the negative pole end of electric capacity C4 is connected to described diode D2 and described negative output terminal.
Wherein in an embodiment, described LED drive circuit also comprises:
First shunt resistance circuit, between the negative pole end that one end of the first shunt resistance circuit is connected to described diode D1 and described positive output end, between the positive terminal that the other end is connected to described diode D4 and described negative output terminal; With
Second shunt resistance circuit, between the negative pole end that one end of the first shunt resistance circuit is connected to described diode D3 and described positive output end, between the positive terminal that the other end is connected to described diode D2 and described negative output terminal.
Wherein in an embodiment, described first shunt resistance circuit and described second shunt resistance circuit include the resistance of at least two series connection.
A kind of LED provided by the utility model, comprise fluorescent tube, LED array and LED drive circuit, described lamp tube ends is respectively provided with two contact pins, described LED drive circuit is above-mentioned LED drive circuit, the described interface L1 of described LED drive circuit and interface L2 is electrically connected with two described contact pins of described fluorescent tube one end respectively, described interface L3 and described interface L4 is electrically connected with two described contact pins of the described fluorescent tube other end respectively, and the described positive output terminal of described LED drive circuit and described negative output terminal are connected with the positive pole of described LED array and negative pole respectively.
Wherein in an embodiment, the LED lamp bead quantity of described LED array is 90 ~ 120.
LED drive circuit of the present utility model and use the LED of this drive circuit, stable output voltage can be provided to be the sine-shaped direct voltage of 124V-150V, required LED lamp bead quantity is about 100pcs, good economy performance, simultaneously because two ends are all that capacitive coupling obtains the required electric current and voltage of LED, not directly connect diode or resistance class component, there is electroshock-proof function, when mounted LED lamp pipe, can in energising situation, one end is loaded onto, and one end hand is run into and can not be got an electric shock, safe and reliable.
The beneficial effect that the utility model additional technical feature has will be described in this specification embodiment part.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the LED drive circuit in the utility model embodiment;
Fig. 2 and Fig. 3 is respectively the voltage and current waveform schematic diagram that electric ballast exports;
Fig. 4 and Fig. 5 is voltage, the current waveform schematic diagram that LED drive circuit of the present utility model exports.
Embodiment
And the utility model is described in detail below with reference to the accompanying drawings in conjunction with the embodiments.It should be noted that, when not conflicting, the feature in following embodiment and embodiment can combine mutually.
See Fig. 1, the LED drive circuit in the utility model embodiment comprises: interface L1, interface L2, interface L3, interface L4, positive output end, negative output terminal, diode D1, diode D2, diode D3, diode D4, electric capacity C1, resistance R1, electric capacity C2 and resistance R2.
Wherein, the negative pole end of diode D1 is connected with described positive output end with the negative pole end of diode D3, the positive terminal of diode D1 is connected with the negative pole end of diode D4, the positive terminal of diode D4 is connected with described negative output terminal with the positive terminal of diode D2, and the negative pole end of diode D2 is connected with the positive terminal of diode D3; Electric capacity C1 is connected described interface L1 and described interface L2 with one end after resistance R1 parallel connection, the other end is connected between the positive terminal of described diode D1 and the negative pole end of described diode D4, electric capacity C2 is connected described interface L3 and described interface L4 with one end after resistance R2 parallel connection, and the other end is connected between the positive terminal of described diode D3 and the negative pole end of described diode D2.
When LED drive circuit in the utility model embodiment uses, the interface L1 of LED drive circuit and interface L2 is electrically connected with two contact pins of fluorescent tube one end, directly connect one end of electric ballast, interface L3 and interface L4 is electrically connected with two contact pins of the fluorescent tube other end respectively, directly connects the other end of electric ballast.When connecting electron rectifier, electron rectifier exports the waveform (as shown in Figure 2,3) of the ac high-voltage high frequency of about 500V, a 40KHz, when forward voltage receives input capacitance C1 by interface L1, interface L2, diode D1 is ac-coupled to by electric capacity C1, flow to positive output end again, through LED array, flow through diode D2, electric capacity C2 successively, flow back into interface L3 and interface L4.In like manner, during reverse voltage, from interface L3 and interface L4, flow through electric capacity C2 successively, diode D3, then flow through LED array, through diode D4 and electric capacity C1, flow back to interface L1 and interface L2.
Due to diode characteristic, in certain current range, the characteristic that its Vf value is fixed substantially, make by the later voltage clamping of capacitive coupling to certain voltage, again by changing the capacitance of external electric capacity C1, C2, change the output frequency of electric ballast, change the electric current of being defeated by LED array, change the power of whole lamp.Fig. 4 and Figure 5 shows that the voltage being given to LED array after LED drive circuit of the present utility model, current waveform schematic diagram, its output voltage is the sine-shaped direct voltage of 124V-150V, the sine-shaped direct current of its electric current to be reference current be 105.9mA.
Preferably, LED drive circuit in the utility model embodiment also comprises electric capacity C3 and electric capacity C4, the positive terminal of electric capacity C3 is connected between the negative pole end of diode D1 and described positive output end, and negative pole end is connected between the positive terminal of diode D4 and described negative output terminal; The positive terminal of electric capacity C4 is connected between the negative pole end of diode D3 and described positive output end, and negative pole end is connected between the positive terminal of diode D2 and described negative output terminal.Electric capacity C3 and electric capacity C4 plays filter action.
Preferably, LED drive circuit in the utility model embodiment also comprises: the first shunt resistance circuit and the second shunt resistance circuit, one end of first shunt resistance circuit is connected between the negative pole end of diode D1 and described positive output end, between the positive terminal of diode D4 and described negative output terminal; One end of first shunt resistance circuit is connected between the negative pole end of diode D3 and described positive output end, and the other end is connected between the positive terminal of diode D2 and described negative output terminal.
From embodiment above, by LED drive circuit of the present utility model, not by the impact that the high voltagehigh frequency of the electric ballast directly connected exchanges, output voltage can be provided to be the sine-shaped galvanic current supply LED array of 124V-150V, LED lamp bead quantity is about 100, more more economical than the 160-200PCS of prior art, circuit is simple, safety; Simultaneously because two ends are all that capacitive coupling obtains the required electric current and voltage of LED, not directly to connect diode or resistance class component that there is electroshock-proof function, when mounted LED lamp pipe, can in energising situation, one end is loaded onto, one end hand is run into and can not be got an electric shock, safe and reliable.
In another embodiment of the utility model, a kind of LED is provided, it comprises the LED drive circuit in fluorescent tube, LED array and above-described embodiment, described lamp tube ends is respectively provided with two contact pins, the described interface L1 of described LED drive circuit and interface L2 is electrically connected with two described contact pins of described fluorescent tube one end respectively, described interface L3 and described interface L4 is electrically connected with two described contact pins of the described fluorescent tube other end respectively, and the described positive output terminal of described LED drive circuit and described negative output terminal are connected with the positive pole of described LED array and negative pole respectively.Preferably, the LED lamp bead quantity of described LED array is 90 ~ 120.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (6)
1. a LED drive circuit, is characterized in that, comprising:
Interface L1, interface L2, interface L3 and interface L4;
Positive output end and negative output terminal;
Diode D1, diode D2, diode D3 and diode D4, the negative pole end of diode D1 is connected with described positive output end with the negative pole end of diode D3, the positive terminal of diode D1 is connected with the negative pole end of diode D4, the positive terminal of diode D4 is connected with described negative output terminal with the positive terminal of diode D2, and the negative pole end of diode D2 is connected with the positive terminal of diode D3;
Electric capacity C1, resistance R1, electric capacity C2 and resistance R2, electric capacity C1 is connected described interface L1 and described interface L2 with one end after resistance R1 parallel connection, the other end is connected between the positive terminal of described diode D1 and the negative pole end of described diode D4, electric capacity C2 is connected described interface L3 and described interface L4 with one end after resistance R2 parallel connection, and the other end is connected between the positive terminal of described diode D3 and the negative pole end of described diode D2.
2. LED drive circuit according to claim 1, is characterized in that, also comprises:
Between the negative pole end that the positive terminal of electric capacity C3, electric capacity C3 is connected to described diode D1 and described positive output end, between the positive terminal that the negative pole end of electric capacity C3 is connected to described diode D4 and described negative output terminal; With
Between the negative pole end that the positive terminal of electric capacity C4, electric capacity C4 is connected to described diode D3 and described positive output end, between the positive terminal that the negative pole end of electric capacity C4 is connected to described diode D2 and described negative output terminal.
3. LED drive circuit according to claim 1, is characterized in that, also comprises:
First shunt resistance circuit, between the negative pole end that one end of the first shunt resistance circuit is connected to described diode D1 and described positive output end, between the positive terminal that the other end is connected to described diode D4 and described negative output terminal; With
Second shunt resistance circuit, between the negative pole end that one end of the first shunt resistance circuit is connected to described diode D3 and described positive output end, between the positive terminal that the other end is connected to described diode D2 and described negative output terminal.
4. LED drive circuit according to claim 3, is characterized in that, described first shunt resistance circuit and described second shunt resistance circuit include the resistance of at least two series connection.
5. a LED, comprise fluorescent tube, LED array and LED drive circuit, described lamp tube ends is respectively provided with two contact pins, it is characterized in that, described LED drive circuit is for as the LED drive circuit in Claims 1 to 4 as described in any one, the described interface L1 of described LED drive circuit and interface L2 is electrically connected with two described contact pins of described fluorescent tube one end respectively, described interface L3 and described interface L4 is electrically connected with two described contact pins of the described fluorescent tube other end respectively, the described positive output terminal of described LED drive circuit and described negative output terminal are connected with the positive pole of described LED array and negative pole respectively.
6. LED according to claim 5, is characterized in that, the LED lamp bead quantity of described LED array is 90 ~ 120.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469871.3U CN204119571U (en) | 2014-08-19 | 2014-08-19 | LED drive circuit and use the LED of this drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469871.3U CN204119571U (en) | 2014-08-19 | 2014-08-19 | LED drive circuit and use the LED of this drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204119571U true CN204119571U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420469871.3U Expired - Lifetime CN204119571U (en) | 2014-08-19 | 2014-08-19 | LED drive circuit and use the LED of this drive circuit |
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| CN (1) | CN204119571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371147A (en) * | 2015-11-25 | 2016-03-02 | 木林森股份有限公司 | Light emitting diode (LED) lamp tube capable of being compatible with electronic ballast |
-
2014
- 2014-08-19 CN CN201420469871.3U patent/CN204119571U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371147A (en) * | 2015-11-25 | 2016-03-02 | 木林森股份有限公司 | Light emitting diode (LED) lamp tube capable of being compatible with electronic ballast |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170926 Address after: 519000 Guangdong province science and technology innovation of Zhuhai high tech Zone in Coast Road No. 1 Building No. 2 -2 a Patentee after: ETI SOLID STATE LIGHTING (ZHUHAI) Ltd. Address before: 4 building, No. six, No. 18, Harbour Road, Tang Wan Town, Zhuhai, Guangdong, 519000 Patentee before: ELEC-TECH INTERNATIONAL Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150121 |
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| CX01 | Expiry of patent term |