CN101925229A - Driving circuit device of LED lamp tube - Google Patents
Driving circuit device of LED lamp tube Download PDFInfo
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- CN101925229A CN101925229A CN2010102344602A CN201010234460A CN101925229A CN 101925229 A CN101925229 A CN 101925229A CN 2010102344602 A CN2010102344602 A CN 2010102344602A CN 201010234460 A CN201010234460 A CN 201010234460A CN 101925229 A CN101925229 A CN 101925229A
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- rectifier bridge
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- fluorescent tube
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Abstract
The invention discloses a driving circuit device of an LED lamp tube, which comprises a high-frequency magnetic core insolating transformer, a rectifier bridge associated with the output end of the insolating transformer and a high-frequency capacitor connected with the output end of the rectifier bridge in parallel, wherein the output end of the rectifier bridge is connected with the positive and negative poles of the high-frequency capacitor and a LED lamp string in parallel; one input end of the high-frequency magnetic core insolating transformer is connected with a two-head plug pin of a fluorescent tube; one input end of the high-frequency magnetic core insolating transformer is connected with a high-frequency capacitor and a low-frequency rectifier bridge, which is connected with the high-frequency capacitor in parallel, in series; the output end of the rectifier bridge and the output end of the low-frequency rectifier bridge are connected with the positive and negative poles of the high-frequency capacitor and the LED lamp string in parallel; and one input end of the high-frequency magnetic core insolating transformer and one input end of another high-frequency capacitor are connected with the two-head plug pin of the fluorescent tube respectively. The device has the characteristics of simple structure, low cost, high conversion rate, stable performance, high safety, compatible use in high-frequency electronic ballast or a low-frequency inductance rectifier bracket, direct installation in a global commercial power network, and the like.
Description
Technical field
What the present invention relates to is a kind of LED lamp tube drive circuit device that adapts to common fluorescent tube installation environment fully, belongs to the LED lighting technical field.
Background technology
Existing illuminating LED lamp tube drive circuit, all adopt the electronics constant-current circuit of some standards to come driving LED lamp string, the characteristics of its maximum are: can only use tens input voltages to the a-c cycle of hundreds of hertz, so being doomed existing LED lamp tube drive circuit can only be applied in direct access civil power and have these two kinds of applied environments of common fluorescence daylight lamp bracket of low frequency inductance type ballast, and substitute in the process of conventional fluorescent fluorescent tube at the LED illuminating product, cause those users that using high frequency fluorescence fluorescent lamp can't directly use the LED illuminating product, because they must remove original electric ballast and connect wires again, this has hit the progress that the LED illuminating product is promoted to domestic consumer greatly, simultaneously because also increase greatly of the various potential safety hazards that transformation process brings, in addition, owing to use the conventional fluorescent lamps user of high-frequency electrical minor ballast more, apply so existing LED lamp tube drive circuit has greatly limited the actual of novel environment friendly illuminating product than the user of the conventional fluorescent lamps of using the low frequency Inductive ballast.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, and provide a kind of installation environment of the existing conventional fluorescent lamps pipe of the convenient safe handling of user that can allow that the LED fluorescent tube is installed, can further enlarge the driving circuit device that the LED illuminating product substitutes the LED fluorescent tube of traditional lighting product comprehensively.
The objective of the invention is to finish by following technical solution, described driving circuit device, it includes a high frequency magnetic core isolating transformer, is parallel to the rectifier bridge of isolating transformer output, is parallel to the high frequency capacitance of rectification bridge output end; The output of described rectifier bridge is parallel to the both positive and negative polarity of high frequency capacitance and LED lamp string; An input of described high frequency magnetic core isolating transformer connects two contact pin of fluorescent tube.
The low frequency rectifier bridge that described high frequency magnetic core isolating transformer input is in series with another high frequency capacitance and is parallel to this high frequency capacitance; The output of the output of described rectifier bridge and low frequency rectifier bridge is parallel to the both positive and negative polarity of high frequency capacitance and LED lamp string simultaneously; An input of described high frequency magnetic core isolating transformer and an input of another high frequency capacitance are connected two contact pin of fluorescent tube respectively.
Described fluorescent tube contact pin comprises the contact pin that is electrically connected at traditional fluorescent lamp pipe two; Described led drive circuit device is made into the shape and size the same with common fluorescent tube together with LED lamp string.
Described rectifier bridge is connected into half-bridge or is connected into full-bridge; Reinstall the constant-current circuit of a wide voltage input between described low frequency rectifier bridge and the LED lamp string.
The present invention compared with prior art has simple in structurely, and cost is low, the conversion efficiency height, and stable performance, safe, compatibility is used in high-frequency electronic ballast or low frequency inductance rectifier lamp bracket and directly is installed on characteristics such as global electricity network.
Description of drawings
Fig. 1 is a basic principle schematic of the present invention.
Fig. 2 is an expanded function principle schematic of the present invention.
Embodiment
The present invention will be described in detail below in conjunction with accompanying drawing: shown in Figure 1, the present invention mainly includes a high frequency magnetic core isolating transformer 1, is parallel to the rectifier bridge 2 of isolating transformer 1 output, is parallel to the high frequency capacitance 3 of rectifier bridge 2 outputs; The output of described rectifier bridge 2 is parallel to the both positive and negative polarity of high frequency capacitance 3 and LED lamp string 6; An input of described high frequency magnetic core isolating transformer 1 connects two contact pin 4a, 4b and 5a, the 5b of fluorescent tube.
The low frequency rectifier bridge 9 etc. that the present invention can also comprise the high frequency capacitance 3 that is parallel to rectifier bridge 2 outputs and be series at the high frequency capacitance 8 of high frequency magnetic core isolating transformer 1 input and be parallel to another high frequency capacitance 8.The output of the output of rectifier bridge 2 and low frequency rectifier bridge 9 is parallel to the both positive and negative polarity of high frequency capacitance 3 and LED lamp string 6 simultaneously, and provides electric energy for it; An input of high frequency magnetic core isolating transformer 1 and an input of another high frequency capacitance 8 are connected two contact pin 4a, 4b and 5a, the 5b of fluorescent tube 7 respectively.
Described fluorescent tube contact pin comprises the contact pin that is electrically connected at traditional fluorescent lamp pipe two; Described led drive circuit device is made into the shape and size the same with common fluorescent tube together with LED lamp string, so the user can directly replace original common fluorescent tube with the LED fluorescent tube very simply on original daylight lamp bracket.
Described rectifier bridge 2 is connected into half-bridge or is connected into full-bridge; Reinstall the constant-current circuit 11 of a wide voltage input between described low frequency rectifier bridge 9 and the LED lamp string 6.
The present invention can be applied to be equipped with the daylight lamp bracket of High Frequency Electric Ballast and low frequency inductance rectifier simultaneously, but during real work, some the element roles in the circuit have nothing in common with each other.When the LED fluorescent tube of using the present invention's making is installed in the High Frequency Electric Ballast lamp bracket, the high-frequency current of rectifier 10 current limlitings that carried by lamp bracket is by fluorescent tube 7 contact pin 4a, 4b and 5a, 5b feed-in circuit of the present invention, because the capacity of another high frequency capacitance 8 is the enough height (generally greater than 20 KHz) of output frequency of big (microfarad) and hf rectifier enough, so high-frequency current can not enter low frequency rectifier bridge 9; High frequency power will all enter isolating transformer 1, be obtained pure constant current direct current by high frequency capacitance 3 filtering then, and this direct current is used to direct driving LED lamp string 6; When the LED fluorescent tube that uses circuit production of the present invention is installed in low frequency inductance rectifier lamp bracket, among contact pin 4a, the 4b and 5a, 5b feed-in circuit of the present invention of the low-frequency current that is carried moral rectifier 10 current limlitings by lamp bracket by fluorescent tube 7.Because high-frequency isolation transformer 1 inductance value very little (have only several millis enjoy or littler), and the output frequency of low frequency rectifier very low (50 or 60 hertz), so low-frequency current can not be entered rectifier bridge 2 by high-frequency isolation transformer 1 conversion, but by giving LED lamp string 6 power supplies after 9 rectifications of low frequency rectifier bridge; In addition in order to mate low frequency inductance rectifier or high-frequency electrical minor ballast better, the power of LED lamp string 6 is designed to the same parameter of common fluorescence fluorescent tube, so as long as gross power is equal to the power of a standard fluorescence fluorescent tube, also can many LED fluorescent tubes of ballast driven of simple realization, and these many LED fluorescent tubes fluorescent tube that is equal to a calibration power in parallel together.
In sum, use driving circuit device of the present invention and can allow LED lamp string realize the compatibility use of low-and high-frequency daylight lamp bracket easily, possess the same installation environment of common fluorescence fluorescent tube.In addition, if between low frequency rectifier bridge 9 and LED lamp string 6, reinstall the constant-current circuit 11 of a wide voltage input (for example 90-350DC), as shown in Figure 2, circuit then of the present invention not only can be installed on the daylight lamp bracket of High Frequency Electric Ballast or low frequency inductance rectifier, also can be directly connected to civil power, and global electrical network self adaptation, LED fluorescent tube are really accomplished general any installation environment, greatly provide convenience for the user.
What particularly point out is: 9 of another high frequency capacitance 8 in the driving circuit device of the present invention and low frequency rectifier bridges are used at low frequency Inductive ballast lamp bracket and are just played a role when directly being connected civil power, when being applied to the high-frequency electronic ballast lamp bracket, do not play a role, when therefore if LED lamp string only is applied to the high-frequency electronic ballast lamp bracket, for saving cost, another high frequency capacitance 8 and low frequency rectifier bridge 9 and constant-current circuit 11 can remove.
The technology that involved in the present invention other do not addressed in detail is known technology, and those skilled in the art can implement the present invention easily on the basis of understanding content of the present invention.
Claims (4)
1. the driving circuit device of a LED fluorescent tube is characterized in that it includes a high frequency magnetic core isolating transformer (1), is parallel to the rectifier bridge (2) of isolating transformer (1) output, is parallel to the high frequency capacitance (3) of rectifier bridge (2) output; The output of described rectifier bridge (2) is parallel to the both positive and negative polarity of high frequency capacitance (3) and LED lamp string (6); An input of described high frequency magnetic core isolating transformer (1) connects two contact pin of fluorescent tube.
2. the driving circuit device of LED fluorescent tube according to claim 1 is characterized in that the low frequency rectifier bridge (9) that described high frequency magnetic core isolating transformer (1) input is in series with another high frequency capacitance (8) and is parallel to this high frequency capacitance (8); The output of the output of described rectifier bridge (2) and low frequency rectifier bridge (9) is parallel to the both positive and negative polarity of high frequency capacitance (3) and LED lamp string (6) simultaneously; Input of described high frequency magnetic core isolating transformer (1) and an input of another high frequency capacitance (8) are connected two contact pin of fluorescent tube respectively.
3. the driving circuit device of LED fluorescent tube according to claim 1 and 2 is characterized in that described fluorescent tube contact pin comprises the contact pin that is electrically connected at traditional fluorescent lamp pipe two; Described led drive circuit device is made into the installation dimension the same with common fluorescent tube together with LED lamp string.
4. the driving circuit device of LED fluorescent tube according to claim 1 and 2 is characterized in that described rectifier bridge (2) is connected into half-bridge or is connected into full-bridge; Reinstall the constant-current circuit (11) of a wide voltage input between described low frequency rectifier bridge (9) and the LED lamp string (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010234460 CN101925229B (en) | 2010-07-20 | 2010-07-20 | Driving circuit device of LED lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010234460 CN101925229B (en) | 2010-07-20 | 2010-07-20 | Driving circuit device of LED lamp tube |
Publications (2)
| Publication Number | Publication Date |
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| CN101925229A true CN101925229A (en) | 2010-12-22 |
| CN101925229B CN101925229B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010234460 Expired - Fee Related CN101925229B (en) | 2010-07-20 | 2010-07-20 | Driving circuit device of LED lamp tube |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355780A (en) * | 2011-09-23 | 2012-02-15 | 浙江世明光学科技有限公司 | LED (light-emitting diode) tube and drive circuit thereof |
| CN102523647A (en) * | 2011-11-11 | 2012-06-27 | 李顺华 | Driving power supply of ballast type LED (Light-Emitting Diode) lamp |
| CN104470086A (en) * | 2014-11-21 | 2015-03-25 | 浙江晨辉照明有限公司 | LED lamp tube power driving circuit and LED lamp tube |
| CN104565890A (en) * | 2013-10-24 | 2015-04-29 | 广东凯乐斯光电科技有限公司 | LED (light emitting diode) lamp tube based on traditional electronic ballast |
| CN105282930A (en) * | 2015-10-20 | 2016-01-27 | 晨辉光宝科技有限公司 | Frequency adaptive LED lamp drive circuit |
| WO2016078253A1 (en) * | 2014-11-21 | 2016-05-26 | 南京大学 | Low-cost comprehensive fully-compatible driving device |
| CN108521694A (en) * | 2018-03-29 | 2018-09-11 | 电子科技大学 | A kind of LED half-bridge circuits of band feedback frequency-conversion constant-current driving |
| RU2718728C2 (en) * | 2015-09-09 | 2020-04-14 | Филипс Лайтинг Холдинг Б.В. | Led tube lamp |
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| CN2267603Y (en) * | 1996-04-30 | 1997-11-12 | 陆平南 | High frequency electronic ballast for high pressure gas discharging lamp |
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2010
- 2010-07-20 CN CN 201010234460 patent/CN101925229B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2267603Y (en) * | 1996-04-30 | 1997-11-12 | 陆平南 | High frequency electronic ballast for high pressure gas discharging lamp |
| JP2007221989A (en) * | 2005-12-29 | 2007-08-30 | Sensata Technologies Inc | Arc fault detection technology of low cost |
| CN101106263A (en) * | 2006-07-14 | 2008-01-16 | 吴本林 | Secure protector for power |
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| CN201754641U (en) * | 2010-07-20 | 2011-03-02 | 杭州泰樱诺科技有限公司 | Driving circuit device for LED lamp tube |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355780A (en) * | 2011-09-23 | 2012-02-15 | 浙江世明光学科技有限公司 | LED (light-emitting diode) tube and drive circuit thereof |
| CN102523647A (en) * | 2011-11-11 | 2012-06-27 | 李顺华 | Driving power supply of ballast type LED (Light-Emitting Diode) lamp |
| CN104565890A (en) * | 2013-10-24 | 2015-04-29 | 广东凯乐斯光电科技有限公司 | LED (light emitting diode) lamp tube based on traditional electronic ballast |
| CN104470086A (en) * | 2014-11-21 | 2015-03-25 | 浙江晨辉照明有限公司 | LED lamp tube power driving circuit and LED lamp tube |
| EP3024303A2 (en) | 2014-11-21 | 2016-05-25 | Zhejiang CH Lighting Co., Ltd. | Led tube power drive circuit and led tube |
| WO2016078253A1 (en) * | 2014-11-21 | 2016-05-26 | 南京大学 | Low-cost comprehensive fully-compatible driving device |
| RU2718728C2 (en) * | 2015-09-09 | 2020-04-14 | Филипс Лайтинг Холдинг Б.В. | Led tube lamp |
| CN105282930A (en) * | 2015-10-20 | 2016-01-27 | 晨辉光宝科技有限公司 | Frequency adaptive LED lamp drive circuit |
| CN105282930B (en) * | 2015-10-20 | 2018-10-02 | 晨辉光宝科技有限公司 | A kind of LED lamp drive circuit that frequency is adaptive |
| CN108521694A (en) * | 2018-03-29 | 2018-09-11 | 电子科技大学 | A kind of LED half-bridge circuits of band feedback frequency-conversion constant-current driving |
| CN108521694B (en) * | 2018-03-29 | 2023-09-22 | 电子科技大学 | LED half-bridge circuit with feedback variable-frequency constant-current drive |
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|---|---|
| CN101925229B (en) | 2013-05-22 |
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Granted publication date: 20130522 Termination date: 20170720 |