CN204948392U - A kind of LED fluorescent lamp tube interface circuit - Google Patents
A kind of LED fluorescent lamp tube interface circuit Download PDFInfo
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- CN204948392U CN204948392U CN201520586559.7U CN201520586559U CN204948392U CN 204948392 U CN204948392 U CN 204948392U CN 201520586559 U CN201520586559 U CN 201520586559U CN 204948392 U CN204948392 U CN 204948392U
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Abstract
The utility model relates to a kind of LED fluorescent lamp tube interface circuit, and it comprises the first bridge rectifier, the second bridge rectifier and driving power; First and second bridge rectifiers to join end to end formation by four diodes, in first bridge rectifier, the positive pole of the diode that the positive pole of the diode that two positive poles are connected is connected with two positive poles in the second bridge rectifier is connected, and is connected with the negative pole of driving power; In first bridge rectifier, the negative pole of the diode that the negative pole of the diode that two negative poles are connected is connected with two negative poles in the second bridge rectifier is connected, and is connected with the positive pole of driving power; In first bridge rectifier, the link of two diodes that positive pole is connected with negative pole is connected respectively the first and second binding posts, and in the second bridge rectifier, the link of two diodes that positive pole is connected with negative pole is connected respectively the third and fourth binding post.The beneficial effects of the utility model are: simple, easily and can not damage fluorescent tube.
Description
Technical field
The utility model belongs to LED lamp field, is specifically related to a kind of LED fluorescent lamp tube interface circuit.
Background technology
LED daylight lamp as one of the product of national green energy-saving LED illumination market engineering focus development, its have start fast, power is little, without stroboscopic, be not easy visual fatigue and the advantages such as energy-conserving and environment-protective, is widely used in the places such as school, market and subway.As depicted in figs. 1 and 2, the mode that common LED fluorescent lamp tube connects power supply has single-ended connection to be connected two kinds with both-end.As shown in Figure 1, LED fluorescent lamp tube adopts the mode of single-ended connection to connect AC power, namely a binding post of LED fluorescent lamp tube one end is connected with the live wire of AC power by switch, and another binding post of LED fluorescent lamp tube one end is connected with the zero line of AC power.As shown in Figure 2, the mode that LED fluorescent lamp tube adopts both-end to connect connects AC power, namely two binding posts of LED fluorescent lamp tube one end are connected with the live wire of AC power by switch after connecting, and two binding posts of its other end are all connected with the zero line of AC power.The mode of connection that single-ended connection is connected with both-end is different, when LED fluorescent lamp tube is installed, pays particular attention to, otherwise easily damages fluorescent tube.
Utility model content
In order to solve the problems referred to above that prior art exists, the utility model provides a kind of LED fluorescent lamp tube interface circuit, adopts this interface circuit, no matter adopts which kind of mode of connection, and LED fluorescent lamp tube can normally work.
The technical scheme that the utility model adopts is: a kind of LED fluorescent lamp tube interface circuit comprises the first bridge rectifier, the second bridge rectifier and driving power; Described first bridge rectifier comprises first to fourth diode, the positive pole of described first diode is connected with the positive pole of the second diode, the negative pole of the second diode is connected with the positive pole of the 3rd diode, the negative pole of the 3rd diode is connected with the negative pole of the 4th diode, and the positive pole of the 4th diode is connected with the negative pole of the first diode; Described second bridge rectifier comprises the 5th to the 8th diode, the negative pole of described 5th diode is connected with the negative pole of described 6th diode, the positive pole of described 6th diode is connected with the negative pole of described 7th diode, the positive pole of described 7th diode is connected with the positive pole of described 8th diode, and the negative pole of described 8th diode is connected with the positive pole of described 5th diode; The positive pole of described first diode is connected with the described positive pole of the 8th diode and the negative pole of described driving power; The negative pole of described 3rd diode is connected with the described negative pole of the 5th diode and the positive pole of described driving power; The output of described driving power is connected with the LED in described LED fluorescent lamp tube; The negative pole of described first diode is connected with the first binding post of described LED fluorescent lamp tube, the negative pole of described second diode is connected with the second binding post of described LED fluorescent lamp tube, the positive pole of described 5th diode is connected with the 3rd binding post of described LED fluorescent lamp tube, and the positive pole of described 6th diode is connected with the 4th binding post of described LED fluorescent lamp tube.
Owing to adopting above technical scheme, the beneficial effects of the utility model are: which kind of mode of connection no matter the utility model adopt be connected with AC power, LED can normally work, thus makes the mode of connection of LED fluorescent lamp tube simple, easy and can not damage LED.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in prior art, LED fluorescent lamp tube adopts the single-ended mode of connection to be connected with AC power;
Fig. 2 is the schematic diagram that in prior art, LED fluorescent lamp tube adopts the both-end mode of connection to be connected with AC power;
Fig. 3 is the schematic diagram of the utility model LED fluorescent lamp tube interface circuit.
In figure: 1, the first bridge rectifier; 2, the second bridge rectifier; 3, driving power; 4, LED.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 3, the utility model provides a kind of LED fluorescent lamp tube interface circuit, it comprises the first bridge rectifier 1, second bridge rectifier 2 and driving power 3, wherein, first bridge rectifier 1 comprises the first diode D1 to tetrode D4, the positive pole of the first diode D1 is connected with the positive pole of the second diode D2, the negative pole of the second diode D2 is connected with the positive pole of the 3rd diode D3, the negative pole of the 3rd diode D3 is connected with the negative pole of the 4th diode D4, and the positive pole of the 4th diode D4 is connected with the negative pole of the first diode D1.Second bridge rectifier 2 comprises the 5th diode D5 to the 8th diode D8, the negative pole of the 5th diode D5 is connected with the negative pole of the 6th diode D6, the positive pole of the 6th diode D6 is connected with the negative pole of the 7th diode D7, the positive pole of the 7th diode D7 is connected with the positive pole of the 8th diode D8, and the negative pole of the 8th diode D8 is connected with the positive pole of the 5th diode D5.In first bridge rectifier 1, the positive pole of the first diode D1 is connected with the positive pole of the 8th diode D8 in the second bridge rectifier 2, and the positive pole of the 8th diode D8 is connected with the negative pole of driving power 3; In first bridge rectifier 1, the negative pole of the 3rd diode D3 is connected with the negative pole of the 5th diode D5 in the second bridge rectifier 2, and the negative pole of the 5th diode D5 is connected with the positive pole of driving power 3.The output of driving power 3 is connected with the LED 4 in LED fluorescent lamp tube.The negative pole of the first diode D1 is connected with the first binding post P1 of LED fluorescent lamp tube, and the negative pole of the second diode D2 is connected with the second binding post P2 of LED fluorescent lamp tube.The positive pole of the 5th diode D5 is connected with the 3rd binding post P3 of LED fluorescent lamp tube, and the positive pole of the 6th diode D6 is connected with the 4th binding post P4 of LED fluorescent lamp tube.
When adopting the single-ended mode of connection between LED fluorescent lamp tube and AC power:
When the first binding post P1 of LED fluorescent lamp tube is connected with the live wire of AC power, when its second binding post P2 is connected with the zero line of AC power, each diode in second bridge rectifier 2 all ends, when AC power provides positive voltage, first diode D1 and the 3rd diode D3 ends, second diode D2 and the 4th diode D4 conducting, electric current gets back to the second binding post P2 by the first binding post P1 through the first diode D1, driving power 3, LED 4 and the second diode D2, and LED 4 obtains a half wave rectified voltage.When AC power provides negative voltage, first diode D1 and the 3rd diode D3 conducting, second diode D2 and the 4th diode D4 ends, electric current gets back to the first binding post P1 by the second binding post P2 through the 3rd diode D3, driving power 3, LED 4 and the first diode D1, and LED 4 obtains another half wave rectified voltage.A voltage waveform identical with full-wave rectification is obtained like this in LED 4.
When the first binding post P1 of LED fluorescent lamp tube is connected with the live wire of AC power, its the 3rd binding post P3 is connected with the zero line of AC power, and AC power is when providing positive voltage, 4th diode D4 and the 8th diode D8 conducting, first diode D1, D2, D3, D5, D6, D7 all ends, electric current gets back to the 3rd binding post P3 by the first binding post P1 through the 4th diode D4, driving power 3, LED 4 and the 8th diode D8, and LED 4 obtains a half wave rectified voltage.When AC power provides negative voltage, first diode D1 and the 5th diode D5 conducting, second diode D2, D3, D4, D6, D7, D8 all ends, electric current gets back to the first binding post P1 by the 3rd binding post P3 through the 5th diode D5, driving power 3, LED 4 and the first diode D1, and LED 4 obtains another half wave rectified voltage.A voltage waveform identical with full-wave rectification is obtained like this in LED 4.
When adopting the both-end mode of connection between LED fluorescent lamp tube and AC power:
When the first binding post P1 of LED fluorescent lamp tube is all connected with the live wire of AC power with the second binding post P2, its the 3rd binding post P3 is all connected with the zero line of AC power with the 4th binding post P4, and AC power is when providing positive voltage, 3rd diode D3, D4, D7, the equal conducting of D8, first diode D1, D2, D5, D6 all ends, electric current by the first binding post P1 and the second binding post P2 through the 3rd diode D3, 4th diode D4, driving power 3, LED 4, 7th diode D7 and the 8th diode D8 gets back to the 3rd binding post P3 and the 4th binding post P4, LED 4 obtains a half wave rectified voltage.When AC power provides negative voltage, the equal conducting of first diode D1, D2, D5, D6,3rd diode D3, D4, D7, D8 all ends, electric current gets back to the first binding post P1 and the second binding post P2 by the 3rd binding post P3 and the 4th binding post P4 through the 5th diode D5, the 6th diode D6, driving power 3, LED 4, first diode D1 and the second diode D2, and LED 4 obtains another half wave rectified voltage.A voltage waveform identical with full-wave rectification is obtained like this in LED 4.
From connected mode and the operation principle of above-mentioned AC power, the utility model LED fluorescent lamp tube interface circuit and LED 4, adopt the utility model LED fluorescent lamp tube interface circuit, no matter LED fluorescent lamp tube adopts the single-ended mode of connection, the both-end mode of connection or other modes of connection, and LED fluorescent lamp tube can both normally work.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection range of the present utility model.
Claims (1)
1. a LED fluorescent lamp tube interface circuit, is characterized in that: it comprises the first bridge rectifier, the second bridge rectifier and driving power;
Described first bridge rectifier comprises first to fourth diode, the positive pole of described first diode is connected with the positive pole of the second diode, the negative pole of the second diode is connected with the positive pole of the 3rd diode, the negative pole of the 3rd diode is connected with the negative pole of the 4th diode, and the positive pole of the 4th diode is connected with the negative pole of the first diode;
Described second bridge rectifier comprises the 5th to the 8th diode, the negative pole of described 5th diode is connected with the negative pole of described 6th diode, the positive pole of described 6th diode is connected with the negative pole of described 7th diode, the positive pole of described 7th diode is connected with the positive pole of described 8th diode, and the negative pole of described 8th diode is connected with the positive pole of described 5th diode;
The positive pole of described first diode is connected with the described positive pole of the 8th diode and the negative pole of described driving power; The negative pole of described 3rd diode is connected with the described negative pole of the 5th diode and the positive pole of described driving power;
The output of described driving power is connected with the LED in described LED fluorescent lamp tube; The negative pole of described first diode is connected with the first binding post of described LED fluorescent lamp tube, the negative pole of described second diode is connected with the second binding post of described LED fluorescent lamp tube, the positive pole of described 5th diode is connected with the 3rd binding post of described LED fluorescent lamp tube, and the positive pole of described 6th diode is connected with the 4th binding post of described LED fluorescent lamp tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520586559.7U CN204948392U (en) | 2015-08-06 | 2015-08-06 | A kind of LED fluorescent lamp tube interface circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520586559.7U CN204948392U (en) | 2015-08-06 | 2015-08-06 | A kind of LED fluorescent lamp tube interface circuit |
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| CN204948392U true CN204948392U (en) | 2016-01-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007669A (en) * | 2015-08-06 | 2015-10-28 | 桂林海威科技有限公司 | LED fluorescent lamp tube interface circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007669A (en) * | 2015-08-06 | 2015-10-28 | 桂林海威科技有限公司 | LED fluorescent lamp tube interface circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 541004 the Guangxi Zhuang Autonomous Region Guilin Chaoyang Road 12 Guilin national high tech Zone Information Industry Park Haiwei science and Technology Park Patentee after: GUILIN HIVISION TECHNOLOGY CO., LTD. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin national hi tech Zone Information Industry Park Haiwei Science Park Patentee before: Guilin Hivision Technology Co., Ltd. |
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| CP03 | Change of name, title or address |