CN204291492U - A kind of LED pompon bubble lamp driving power source - Google Patents
A kind of LED pompon bubble lamp driving power source Download PDFInfo
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- CN204291492U CN204291492U CN201420764908.5U CN201420764908U CN204291492U CN 204291492 U CN204291492 U CN 204291492U CN 201420764908 U CN201420764908 U CN 201420764908U CN 204291492 U CN204291492 U CN 204291492U
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Abstract
A kind of LED pompon bubble lamp driving power source, second pin of rectifier bridge stack connects the zero line of 220V power supply, 4th pin of rectifier bridge stack connects the live wire of 220V power supply by insurance resistance, electrochemical capacitor is connected in parallel on the first pin of described rectifier bridge stack, between 3rd pin, first pin of rectifier bridge stack, between 3rd pin, sequential series has controllable accurate source of stable pressure, second resistance, first pin of rectifier bridge stack connects the anode of controllable accurate source of stable pressure, the positive pole of LED silk group connects the 3rd pin of described rectifier bridge stack, the negative pole of LED silk group connects the collector electrode of triode, the first pin of rectifier bridge stack is accessed after the emitter of triode connects the first resistance, the base stage of triode connects the negative electrode of controllable accurate source of stable pressure, the reference pole of controllable accurate source of stable pressure connects the emitter of triode, the utility model LED pompon bubble lamp driving power source volume is little, constant output current, the luminescence of LED silk bulb lamp does not have stroboscopic, long service life.
Description
Technical field
The utility model relates to a kind of driving power, particularly relates to a kind of driving power being applied to LED.
Background technology
LED silk bulb lamp, as a kind of emerging illuminating product, will have a wide range of applications in each lighting field.Existing filament bulb lamp, mainly contain the driving power of two large classes: a kind of is resistance-capacitance depressurization type, volume is little, can put in E14 lamp holder, but the filament bulb lamp stroboscopic made of such power supply is serious, and have injury to eye, the current value of such power supply also changes with the transformation of external voltage, make the operating current of LED silk exceed its rated current, shorten the useful life of LED silk.Another kind is type switching power, and this kind of power supply can accomplish output current not by the impact of external voltage change, but output current low precision, and volume is comparatively large, can not directly put into E14 lamp holder.
Utility model content
The purpose of this utility model is to provide a kind of LED pompon bubble lamp driving power source, driving power volume for solving traditional LED lamp silk bulb lamp is large, and output current is non-constant, has stroboscopic, output current low precision, affects the technical problem in the useful life of LED silk bulb lamp.
LED pompon bubble lamp driving power source of the present utility model, comprises insurance resistance, rectifier bridge stack, electrochemical capacitor, first resistance, second resistance, triode, controllable accurate source of stable pressure, LED silk group, the second pin 2 of described rectifier bridge stack connects the zero line of 220V power supply, and the 4th pin 4 of described rectifier bridge stack connects the live wire of 220V power supply by insurance resistance BX, described electrochemical capacitor is connected in parallel on the first pin 1 of described rectifier bridge stack, between 3rd pin 3, the first pin 1 of described rectifier bridge stack, between 3rd pin 3, sequential series has controllable accurate source of stable pressure, second resistance, first pin 1 of described rectifier bridge stack connects the anode of controllable accurate source of stable pressure, the positive pole of described LED silk group connects the 3rd pin 3 of described rectifier bridge stack, the negative pole of LED silk group connects the collector electrode of triode, the first pin 1 of rectifier bridge stack is accessed after the emitter of triode connects the first resistance, the base stage of triode connects the negative electrode of controllable accurate source of stable pressure, and the reference pole of controllable accurate source of stable pressure connects the emitter of triode.
Described rectifier bridge stack encapsulation model is LX10M, and the model of described controllable accurate source of stable pressure is TL431, and 4 LED silks that described LED silk group is single 68 ± 2 volts, 10 milliamperes by specification are in series, and the model of described triode is 2N5551.
This LED pompon bubble lamp driving power source has the following advantages: 1, volume is little, the TL431 controllable accurate source of stable pressure of the little LX10M rectifier bridge stack of encapsulation volume and SOT-23 encapsulation is adopted to make the utility model LED pompon steep lamp driving power source volume-diminished, directly can be put in E14 lamp holder, any connector need not be added; 2, constant output current, controllable accurate source of stable pressure coordinates with the first resistance, makes the voltage constant at the first resistance two ends, when input voltage changes, the current value that driving power exports is invariable, effectively prevent the LED silk infringement because grid voltage change causes; 3, electrochemical capacitor filtering and constant current output is adopted, make the alternating voltage ripple magnitude inside output direct current lower, thus the luminescence of LED silk bulb lamp is more stable, does not have stroboscopic phenomenon, well avoid the injury because stroboscopic causes human eye, also extend the life-span of LED silk bulb lamp.This driving power makes LED silk bulb lamp more energy-conservation, stable, effective protection of the environment.
Below in conjunction with accompanying drawing, LED pompon bubble lamp driving power source of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the utility model LED pompon bubble lamp driving power circuit schematic diagram.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly; be clearly and completely described below in conjunction with the technical scheme of the accompanying drawing in the utility model embodiment to the utility model embodiment; obviously; described embodiment is the utility model part embodiment; instead of whole embodiment; based on the embodiment in the utility model; other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
As shown in Figure 1, LED pompon bubble lamp driving power source of the present utility model, comprise insurance resistance BX, rectifier bridge stack BR, electrochemical capacitor C1, first resistance R1, second resistance R2, triode Q1, controllable accurate source of stable pressure U1, LED silk group D, second pin 2 of described rectifier bridge stack BR connects the zero line of 220V power supply, 4th pin 4 of described rectifier bridge stack BR connects the live wire of 220V power supply by insurance resistance BX, described electrochemical capacitor C1 is connected in parallel on first pin 1 of described rectifier bridge stack BR, between 3rd pin 3, first pin 1 of described rectifier bridge stack BR, between 3rd pin 3, sequential series has controllable accurate source of stable pressure U1, second resistance R2, first pin 1 of described rectifier bridge stack BR connects the anode of controllable accurate source of stable pressure U1, the positive pole of described LED silk group D connects the 3rd pin 3 of described rectifier bridge stack BR, the negative pole of LED silk group D connects the collector electrode of triode Q1, first pin 1 of rectifier bridge stack BR is accessed after the emitter of triode Q1 meets the first resistance R1, the base stage of triode Q1 connects the negative electrode of controllable accurate source of stable pressure U1, the reference pole of controllable accurate source of stable pressure U1 connects the emitter of triode Q1.
It is LX10M that described rectifier bridge stack BR encapsulates model, the model of described controllable accurate source of stable pressure U1 is TL431,4 LED silks that described LED silk group D is single 68 ± 2 volts, 10 milliamperes by specification are in series, the triode Q1 model of the described SOT-89 of being encapsulated as is 2N5551, multiplication factor is 200 ~ 300 times, electrochemical capacitor C1 is 4.7uF 400 volts, and the first resistance R1 is 250 ohm, and the second resistance R2 is 1M ohm.
Alternating current arrives on rectifier bridge stack BR through insurance resistance BX, by rectifier bridge stack BR rectification, electrochemical capacitor C1 filtering (makes the alternating voltage clutter amplitude in the direct voltage of output weaken, the stroboscopic that oscilloscope detects LED silk bulb lamp can be joined with the measure loop that photosensitive Resistance probe is formed in practical application, stroboscopic drops to amplitude 5-0 millivolt, thus effectively contained the stroboscopic of LED silk bulb lamp), 220V alternating current is made to become the direct current (AC*1.4=308 lies prostrate, and AC is 220V alternating current) of 308V.Second resistance R2 provided base current both to triode Q1, operating current is provided again to controllable accurate source of stable pressure U1, according to the characteristic of TL431, the voltage constant at the first resistance R1 two ends is 2.5V, the resistance that the collector electrode ic continuous current of triode Q1 equals 2.5V/R1-ib (ie-ib=ic here ib ignores) first resistance R1 is 250 ohm, and triode Q1 collector current ic exports the Constant Electric Current flow valuve supply LED silk of 10 milliamperes.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.
Claims (5)
1. a LED pompon bubble lamp driving power source, comprise insurance resistance (BX), characterized by further comprising rectifier bridge stack (BR), electrochemical capacitor (C1), first resistance (R1), second resistance (R2), triode (Q1), controllable accurate source of stable pressure (U1), LED silk group (D), second pin (2) of described rectifier bridge stack connects the zero line (N) of 220V power supply, 4th pin (4) of described rectifier bridge stack (BR) connects the live wire (L) of 220V power supply by insurance resistance (BX), described electrochemical capacitor (C1) is connected in parallel on first pin (1) of described rectifier bridge stack (BR), between 3rd pin (3), first pin (1) of described rectifier bridge stack (BR), between 3rd pin (3), sequential series has controllable accurate source of stable pressure (U1), second resistance (R2), first pin (1) of described rectifier bridge stack (BR) connects the anode of controllable accurate source of stable pressure (U1), the positive pole of described LED silk group (D) connects the 3rd pin (3) of described rectifier bridge stack (BR), the negative pole of LED silk group (D) connects the collector electrode of triode (Q1), the emitter of triode (Q1) connects the first pin (1) that the first resistance (R1) accesses rectifier bridge stack (BR) afterwards, the base stage of triode (Q1) connects the negative electrode of controllable accurate source of stable pressure (U1), the reference pole of controllable accurate source of stable pressure (U1) connects the emitter of triode (Q1).
2. LED pompon bubble lamp driving power source according to claim 1, it is characterized in that described rectifier bridge stack (BR) encapsulates model is LX10M.
3. LED pompon bubble lamp driving power source according to claim 2, is characterized in that the model of described controllable accurate source of stable pressure (U1) is TL431.
4. LED pompon according to claim 3 bubble lamp driving power source, is characterized in that specification that described LED silk group (D) is selected is that 4 LED silks of 68 ± 2 volts, 10 milliamperes are in series.
5. LED pompon bubble lamp driving power source according to claim 4, is characterized in that the model of described triode (Q1) is 2N5551.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420764908.5U CN204291492U (en) | 2014-12-08 | 2014-12-08 | A kind of LED pompon bubble lamp driving power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420764908.5U CN204291492U (en) | 2014-12-08 | 2014-12-08 | A kind of LED pompon bubble lamp driving power source |
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| Publication Number | Publication Date |
|---|---|
| CN204291492U true CN204291492U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420764908.5U Expired - Fee Related CN204291492U (en) | 2014-12-08 | 2014-12-08 | A kind of LED pompon bubble lamp driving power source |
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| Country | Link |
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| CN (1) | CN204291492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650753A (en) * | 2018-07-26 | 2018-10-12 | 上海联合滚动轴承有限公司 | A kind of circuit of light sources of three-meter measuring machine |
-
2014
- 2014-12-08 CN CN201420764908.5U patent/CN204291492U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650753A (en) * | 2018-07-26 | 2018-10-12 | 上海联合滚动轴承有限公司 | A kind of circuit of light sources of three-meter measuring machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151208 |
|
| EXPY | Termination of patent right or utility model |