CN203761616U - LED lamp drive circuit - Google Patents
LED lamp drive circuit Download PDFInfo
- Publication number
- CN203761616U CN203761616U CN201320675331.6U CN201320675331U CN203761616U CN 203761616 U CN203761616 U CN 203761616U CN 201320675331 U CN201320675331 U CN 201320675331U CN 203761616 U CN203761616 U CN 203761616U
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- Prior art keywords
- constant current
- led lamp
- current output
- output end
- drive circuit
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- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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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
An LED lamp drive circuit is disclosed and comprises a rectification circuit module and constant current driving control modules, wherein the constant current driving control modules are electrically connected with the rectification circuit module, the constant current driving control modules comprise a plurality of constant current output ends and switches, the switches are used for opening or closing the plurality of constant current output ends in a time sharing manner, and LED lamp strings are formed by connecting driven LED lamps in series. The rectification circuit module is electrically connected with the positive electrode of a first LED lamp in the LED lamp strings, one constant current output end is electrically connected with the negative electrode of a last LED lamp in the LED lamp strings, and each of the other constant current output ends is electrically connected with a connecting line of two neighboring LED lamps in the LED lamp strings. The constant current output ends are four in number and are respectively a first constant current output end, a second constant current output end, a third constant current output end, and a forth constant current output end. The LED drive circuit is simple in control mode and is also simple in peripheral circuit.
Description
Technical field
The utility model relates to a kind of drive circuit, particularly relates to a kind of LED lamp drive circuit.
Background technology
In person in electronics, LED drive circuit (LED circuit translates again circuit of LED), is the core devices of LED lamp, is one and is used for making the shinny circuit of light-emitting diode (LED).Along with green illumination and energy-conservation active demand are advocated in the whole world.Increasing illuminating product enters into the epoch of LED source.And as the core devices of LED lamp, LED drive circuit is being played the part of more and more important role.During the work of LED drive circuit driving LED, its final purpose is all will control the electric current of the LED that flows through to reach or to press close to the numerical value of original designing requirement, and make it stable and be not subject to or reduce to be affected by factors such as supply voltage, temperature, forward bias voltage drop differences, thereby obtain institute's intolerance of shade, prevent that the LED life-span from shortening or damaged.LED works in direct current, its forward bias voltage drop and electric current exponent function relation, therefore superfine little change in voltage also can make its electric current, luminosity great changes have taken place, serious more can be because power consumption be too high permanent damages.Light-emitting diode drives and can be divided into by type constant pressure type driving and constant current mode driving at present.Wherein constant pressure type drives and generally take we common DC/DC with exactlying and boost chip as core composition drive circuit.The advantage of this scheme is that chip cost does not cheaply have complicated peripheral circuit, but shortcoming is the uncontrollable of circuital current in the time of can only constant voltage driving LED will causing driver output.Cannot guarantee the consistency of LED brightness.The uncontrollable problem of electric current that before constant current mode drives and solved, constant pressure type drives.Current reasonable constant current chip can be accomplished the constant current accuracy of 1% left and right, so and the size of current that has easy peripheral control interface that required output can be set be flexibly favourably welcome.But this class chip price is more much higher and peripheral circuit is complicated than constant voltage chip price.Need badly now and want the simple and simple LED drive circuit of peripheral circuit of a kind of control mode.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of control mode the simple and simple LED drive circuit of peripheral circuit.
For solving above technical problem, the technical solution of the utility model is: a kind of LED lamp drive circuit, its key is: comprise rectification circuit module and the constant current drive control module being electrically connected with described rectification circuit module, described constant current drive control module comprises a plurality of constant current output ends and the switch of opening or closing described a plurality of constant current output ends in order to timesharing.
As improvement of the present utility model, driven a plurality of LED lamps are cascaded successively and form LED lamp string, and the positive pole of the first LED lamp in described rectification circuit module and described LED lamp string is electrically connected.
As the utility model, further improve, the negative pole of last the LED lamp in one of them constant current output end and LED lamp string is electrically connected, in other each constant current output end and LED lamp string, the connection line of two adjacent LEDs lamp is electrically connected, the quantity of described constant current drive control module is more than two, and the quantity of described LED lamp string is identical with the quantity of described constant current drive control module.
As the utility model, further improve, the quantity of described constant current output end is 4, be respectively the first constant current output end, the second constant current output end, the 3rd constant current output end and the 4th constant current output end, the number of the LED lamp in described LED lamp string is more than 4.
As the utility model, further improve, the number of the LED lamp in described 4 constant current output ends between adjacent two is more than 1.
Preferably, in described 4 constant current output ends, the number of the LED lamp between adjacent two is 2.
By implement the utility model desirable following beneficial effect:
A kind of LED lamp drive circuit, comprise rectification circuit module and the constant current drive control module being electrically connected with described rectification circuit module, described constant current drive control module comprises a plurality of constant current output ends and the switch of opening or closing described a plurality of constant current output ends in order to timesharing.Rectification circuit module will be inputted constant current drive control module after the AC rectification of input, described switch is opened described constant current output end according to the variation timesharing that is input to the voltage of described constant current drive control module, and the LED lamp being connected with described constant current output end is driven by timesharing.The control mode of this drive circuit is simple and peripheral circuit is simple, and whole drive circuit can be by comparatively compact being integrated on circuit board, thus convenient being quoted on various light fixtures.Constant-current driven module can make LED drive current keep high accuracy and not influenced by ambient temperature simultaneously, and switch timesharing is opened or closed and can realize high efficiency, High Power Factor.Driven a plurality of LED lamp is cascaded successively and forms LED lamp string, the positive pole of the first LED lamp in described rectification circuit module and described LED lamp string is electrically connected, the negative pole of last the LED lamp in one of them constant current output end and LED lamp string is electrically connected, in other each constant current output end and LED lamp string, the connection line of two adjacent LEDs lamp is electrically connected, the quantity of described constant current output end is 4, be respectively the first constant current output end, the second constant current output end, the 3rd constant current output end and the 4th constant current output end, the number of the LED lamp in described LED lamp string is more than 4, the number of the LED lamp in described 4 constant current output ends between adjacent two is more than 1, the quantity of described constant current drive control module is more than two, the quantity of described LED lamp string is identical with the quantity of described constant current drive control module.This structure can increase substantially intensity of illumination under the prerequisite that guarantees integrated rear small volume, thereby meets different light occasion.
Accompanying drawing explanation
Below in conjunction with Figure of description, the utility model is done to further detailed description, wherein:
Fig. 1 the first circuit diagram of the present utility model;
Fig. 2 the second circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of LED lamp drive circuit, comprise rectification circuit module 11 and the constant current drive control module 12 being electrically connected with described rectification circuit module 11, described constant current drive control module 12 comprises a plurality of constant current output ends and the switch of opening or closing described a plurality of constant current output ends in order to timesharing, and described constant current drive control module 12 adopts CYT3000A chip.Driven a plurality of LED lamp is cascaded successively and forms LED lamp string, the positive pole of the first LED lamp in described rectification circuit module 11 and described LED lamp string is electrically connected, the negative pole of last the LED lamp in one of them constant current output end and LED lamp string is electrically connected, and in other each constant current output end and LED lamp string, the connection line of two adjacent LEDs lamp is electrically connected.The quantity of described constant current output end is 4, is respectively the first constant current output end D1, the second constant current output end D2, the 3rd constant current output end D3 and the 4th constant current output end D4.
As shown in Figure 2, the number of the LED lamp in described LED lamp string is 8, the number of the LED lamp in described 4 constant current output ends between adjacent two is 2, the quantity of described constant current drive control module 12 is two, and the quantity of described LED lamp string is identical with the quantity of described constant current drive control module 12 is also two.
Must be pointed out, some indefinitenesses that above-described embodiment is just made the utility model illustrate.But person of skill in the art will appreciate that, do not departing under aim of the present utility model and scope, can make modification to the utility model, replace and change, these are revised, replace and change still belongs to protection range of the present utility model.
Claims (8)
1. a LED lamp drive circuit, it is characterized in that: comprise rectification circuit module (11) and the constant current drive control module (12) being electrically connected with described rectification circuit module (11), described constant current drive control module (12) comprises a plurality of constant current output ends and the switch of opening or closing described a plurality of constant current output ends in order to timesharing.
2. a kind of LED lamp drive circuit according to claim 1, is characterized in that: driven a plurality of LED lamps are cascaded successively and form LED lamp string, and the positive pole of the first LED lamp in described rectification circuit module (11) and described LED lamp string is electrically connected.
3. a kind of LED lamp drive circuit according to claim 2, it is characterized in that: the negative pole of last the LED lamp in one of them constant current output end and LED lamp string is electrically connected, in other each constant current output end and LED lamp string, the connection line of two adjacent LEDs lamp is electrically connected.
4. a kind of LED lamp drive circuit according to claim 3, it is characterized in that: the quantity of described constant current output end is 4, be respectively the first constant current output end (D1), the second constant current output end (D2), the 3rd constant current output end (D3) and the 4th constant current output end (D4).
5. a kind of LED lamp drive circuit according to claim 4, is characterized in that: the number of the LED lamp in described LED lamp string is more than 4.
6. a kind of LED lamp drive circuit according to claim 5, is characterized in that: the number of the LED lamp in described 4 constant current output ends between adjacent two is more than 1.
7. a kind of LED lamp drive circuit according to claim 6, is characterized in that: the number of the LED lamp in described 4 constant current output ends between adjacent two is 2.
8. according to a kind of LED lamp drive circuit described in any one in claim 2 to 7, it is characterized in that: the quantity of described constant current drive control module (12) is more than two, the quantity of described LED lamp string is identical with the quantity of described constant current drive control module (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675331.6U CN203761616U (en) | 2013-10-30 | 2013-10-30 | LED lamp drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675331.6U CN203761616U (en) | 2013-10-30 | 2013-10-30 | LED lamp drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761616U true CN203761616U (en) | 2014-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320675331.6U Expired - Lifetime CN203761616U (en) | 2013-10-30 | 2013-10-30 | LED lamp drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203761616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105704887A (en) * | 2014-12-12 | 2016-06-22 | 简晨峰 | Light emitted diode circuit |
-
2013
- 2013-10-30 CN CN201320675331.6U patent/CN203761616U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105704887A (en) * | 2014-12-12 | 2016-06-22 | 简晨峰 | Light emitted diode circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: LED lamp drive circuit Effective date of registration: 20170407 Granted publication date: 20140806 Pledgee: Shenzhen high tech investment and financing Company limited by guarantee Pledgor: SHENZHEN CYT OPTO-ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: 2017990000283 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong City, Nanshan District province high tech in the middle of the two road, No. 2 Shenzhen International Software Park, room 201-205, room, 4 (only office) (222-226) Patentee after: SHENZHEN CYT SEMICONDUCTOR TECHNOLOGY Co.,Ltd. Address before: 518100 two software park, 4 Nanshan District science and technology, Guangdong, Shenzhen, 201 Patentee before: SHENZHEN CYT OPTO-ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
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| CX01 | Expiry of patent term |