CN204119071U - A kind of simple and easy LED constant current source of energy Antisurge current - Google Patents
A kind of simple and easy LED constant current source of energy Antisurge current Download PDFInfo
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- CN204119071U CN204119071U CN201420562693.9U CN201420562693U CN204119071U CN 204119071 U CN204119071 U CN 204119071U CN 201420562693 U CN201420562693 U CN 201420562693U CN 204119071 U CN204119071 U CN 204119071U
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- diode
- resistance
- triode
- electric capacity
- terminal voltage
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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
Abstract
The utility model discloses a kind of simple and easy LED constant current source of energy Antisurge current, comprises three-terminal voltage-stabilizing pipe, triode, the first diode, the second diode, the 3rd diode, the 4th diode, the first resistance, the second resistance, the 3rd resistance, the first electric capacity and the second electric capacity.The utility model is circuit based on resistance-capacitance depressurization, and controls a power-type triode with three-terminal voltage-stabilizing, can well reach constant output current, adopts NTC resistance to control promotion and the feedback of triode, has good Surge handling capability.And simple structure, electronic devices and components are few, comparatively speaking, have good stability and reliability, simultaneously extremely low manufacturing cost, are applicable to as LED lamp and support the use power supply according to product product.
Description
Technical field
The utility model relates to LED power technical field, particularly relates to a kind of simple and easy LED constant current source of energy Antisurge current.
Background technology
LED is emerging light source, has numerous advantages, but as power supply matching used with it, but respectively has its pros and cons.With the constant-current source of IC as core, although can provide stable voltage and current, manufacturing cost is very high, is unfavorable for the universal of LED and promotes.Common capacitance-resistance voltage reduction circuit, manufacturing cost is not high, but has its drawback yet, and Antisurge current ability is poor, is easy to the moment at switch, produces surge and jeopardizes the reliability of LED light source module.
Utility model content
For solving problem existing in above-mentioned prior art, the utility model provides a kind of simple and easy LED constant current source of energy Antisurge current.
The utility model adopts following technical scheme to realize: a kind of simple and easy LED constant current source of energy Antisurge current, comprises three-terminal voltage-stabilizing pipe, triode, first diode, second diode, 3rd diode, 4th diode, first resistance, second resistance, 3rd resistance, first electric capacity and the second electric capacity, described one end of first resistance is connected with one end of alternating-current voltage source, the other end of described first resistance, the positive pole of described first diode and the negative pole of described 3rd diode are connected, the positive pole of described second diode, the described negative pole of the 4th diode and the other end of described AC power are connected, the negative pole of described first diode, the negative pole of described second diode, the positive pole of described second electric capacity and one end of described second resistance are connected, the positive pole of described 3rd diode, the positive pole of described 4th diode, the negative pole of described second electric capacity, the A level of described three-terminal voltage-stabilizing pipe and one end of described 3rd resistance are connected, the other end of described second resistance, the K level of described three-terminal voltage-stabilizing pipe and the base stage of described triode are connected, the VREF of described three-terminal voltage-stabilizing pipe, the other end of described 3rd resistance is connected with the emitter of described triode, described first electric capacity and described first resistor coupled in parallel, and the positive pole of load LED is connected with the positive pole of described second electric capacity, and the negative pole of load LED is connected with the collector electrode of described triode.
Preferably, described second resistance and described 3rd resistance are the thermistor of NTC negative temperature coefficient.
Preferably, described load LED is that multiple LED lamp bead is composed in series.
Preferably, described first diode, the second diode, the 3rd diode, the 4th diode are identical diode.
Operation principle of the present utility model is such: the resistance-capacitance depressurization that alternating current forms through the first electric capacity C1 and the first resistance R1, through the first diode D1, second diode D2, 3rd diode D3, 4th diode D4, the bridge rectifier that second electric capacity C2 forms, the direct current obtained, while being inputted by load LED positive pole, again by the second resistance R2 step-down, power to the base stage of triode Q1, because the K level of three-terminal voltage-stabilizing pipe V1 is with the base stage parallel connection of triode Q1, this small area analysis is also added to the K pole of three-terminal voltage-stabilizing, meanwhile, triode Q1 conducting, electric current flows through load LED, and by the negative pole of the 3rd resistance R3 to power supply.Because the base stage of the K pole of three-terminal voltage-stabilizing pipe and triode Q1 is in parallel, thus triode Q1 obtain electric current be constant because the relation of triode Q1, the electric current flowing through load LED is also constant.The thermistor of what the second resistance R2 and the 3rd resistance R3 adopted is NTC negative temperature coefficient, in the moment of switch, both surge current had been made to be added to LED light source mould by bridge rectifier fast, but NTC resistance is high-impedance state, the electric current flowing through load LED would not reach rated operational current, but along with after the heating resistance step-down of NTC resistance self, enter normal mode of operation, load LED obtains the direct current of stable constant current supply, and this direct current is high-frequency DC, load LED does not have stroboscopic after working.
Compared with prior art, the utility model has following beneficial effect: the utility model is circuit based on resistance-capacitance depressurization, and control a power-type triode with three-terminal voltage-stabilizing, constant output current can well be reached, adopt NTC resistance to control promotion and the feedback of triode, there is good Surge handling capability.And simple structure, electronic devices and components are few, comparatively speaking, have good stability and reliability, simultaneously extremely low manufacturing cost, are applicable to as LED lamp and support the use power supply according to product product.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Be described in further detail below in conjunction with the simple and easy LED constant current source of specific embodiments and the drawings to a kind of energy of the utility model Antisurge current.
As shown in Figure 1, the simple and easy LED constant current source of a kind of energy Antisurge current that the utility model proposes, comprises three-terminal voltage-stabilizing pipe V1, triode Q1, first diode D1, second diode D2, 3rd diode D3, 4th diode D4, first resistance R1, second resistance R2, 3rd resistance R3, first electric capacity C1 and the second electric capacity C2, one end of described first resistance R1 is connected with one end of alternating-current voltage source, the other end of described first resistance R1, the positive pole of described first diode D1 and the negative pole of described 3rd diode D3 are connected, the positive pole of described second diode D2, the described negative pole of the 4th diode D4 and the other end of described AC power are connected, the negative pole of described first diode D1, the negative pole of described second diode D2, the positive pole of described second electric capacity C2 and one end of described second resistance R2 are connected, the positive pole of described 3rd diode D3, the positive pole of described 4th diode D4, the negative pole of described second electric capacity C2, the A level of described three-terminal voltage-stabilizing pipe V1 and one end of described 3rd resistance R3 are connected, the other end of described second resistance R2, the K level of described three-terminal voltage-stabilizing pipe V1 and the base stage of described triode Q1 are connected, the VREF of described three-terminal voltage-stabilizing pipe V1, the other end of described 3rd resistance R3 is connected with the emitter of described triode Q1, and described first electric capacity C1 is in parallel with described first resistance R1, and described second resistance R2 and described 3rd resistance R3 is the thermistor of NTC negative temperature coefficient, described first diode D1, second diode D2, 3rd diode D3, 4th diode D4 is identical diode, four diodes connect into bridge rectifier, change alternating current into direct current, the positive pole of load LED is connected with the positive pole of described second electric capacity C2, the negative pole of load LED is connected with the collector electrode of described triode Q1, and load LED is composed in series by multiple LED lamp bead.
Operation principle of the present utility model is as follows: the resistance-capacitance depressurization that alternating current forms through the first electric capacity C1 and the first resistance R1, through the first diode D1, second diode D2, 3rd diode D3, 4th diode D4, the bridge rectifier that second electric capacity C2 forms, the direct current obtained, while being inputted by load LED positive pole, again by the second resistance R2 step-down, power to the base stage of triode Q1, because the K level of three-terminal voltage-stabilizing pipe V1 is with the base stage parallel connection of triode Q1, this small area analysis is also added to the K pole of three-terminal voltage-stabilizing, meanwhile, triode Q1 conducting, electric current flows through load LED, and by the negative pole of the 3rd resistance R3 to power supply.Because the base stage of the K pole of three-terminal voltage-stabilizing pipe and triode Q1 is in parallel, thus triode Q1 obtain electric current be constant because the relation of triode Q1, the electric current flowing through load LED is also constant.The thermistor of what the second resistance R2 and the 3rd resistance R3 adopted is NTC negative temperature coefficient, in the moment of switch, both surge current had been made to be added to LED light source mould by bridge rectifier fast, but NTC resistance is high-impedance state, the electric current flowing through load LED would not reach rated operational current, but along with after the heating resistance step-down of NTC resistance self, enter normal mode of operation, load LED obtains the direct current of stable constant current supply, and this direct current is high-frequency DC, load LED does not have stroboscopic after working.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a simple and easy LED constant current source for energy Antisurge current, is characterized in that: comprise three-terminal voltage-stabilizing pipe, triode, first diode, second diode, 3rd diode, 4th diode, first resistance, second resistance, 3rd resistance, first electric capacity and the second electric capacity, described one end of first resistance is connected with one end of alternating-current voltage source, the other end of described first resistance, the positive pole of described first diode and the negative pole of described 3rd diode are connected, the positive pole of described second diode, the described negative pole of the 4th diode and the other end of described AC power are connected, the negative pole of described first diode, the negative pole of described second diode, the positive pole of described second electric capacity and one end of described second resistance are connected, the positive pole of described 3rd diode, the positive pole of described 4th diode, the negative pole of described second electric capacity, the A level of described three-terminal voltage-stabilizing pipe and one end of described 3rd resistance are connected, the other end of described second resistance, the K level of described three-terminal voltage-stabilizing pipe and the base stage of described triode are connected, the VREF of described three-terminal voltage-stabilizing pipe, the other end of described 3rd resistance is connected with the emitter of described triode, described first electric capacity and described first resistor coupled in parallel, and the positive pole of load LED is connected with the positive pole of described second electric capacity, and the negative pole of load LED is connected with the collector electrode of described triode.
2. the simple and easy LED constant current source of energy Antisurge current according to claim 1, is characterized in that: described second resistance and described 3rd resistance are the thermistor of NTC negative temperature coefficient.
3. the simple and easy LED constant current source of energy Antisurge current according to claim 1, is characterized in that: described load LED is that multiple LED lamp bead is composed in series.
4. the simple and easy LED constant current source of energy Antisurge current according to claim 1, is characterized in that: described first diode, the second diode, the 3rd diode, the 4th diode are identical diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562693.9U CN204119071U (en) | 2014-09-28 | 2014-09-28 | A kind of simple and easy LED constant current source of energy Antisurge current |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562693.9U CN204119071U (en) | 2014-09-28 | 2014-09-28 | A kind of simple and easy LED constant current source of energy Antisurge current |
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| CN204119071U true CN204119071U (en) | 2015-01-21 |
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| CN201420562693.9U Expired - Fee Related CN204119071U (en) | 2014-09-28 | 2014-09-28 | A kind of simple and easy LED constant current source of energy Antisurge current |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007670A (en) * | 2015-08-08 | 2015-10-28 | 黄鹂 | Constant-voltage constant-current LED bulb light driver |
| CN105142267A (en) * | 2015-08-08 | 2015-12-09 | 黄鹂 | Constant-voltage and constant-current light-emitting diode (LED) bulb lamp |
| CN105223533A (en) * | 2015-10-30 | 2016-01-06 | 宁波锦澄电子科技有限公司 | A kind of superhigh precision responds DC current prover circuit fast |
-
2014
- 2014-09-28 CN CN201420562693.9U patent/CN204119071U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007670A (en) * | 2015-08-08 | 2015-10-28 | 黄鹂 | Constant-voltage constant-current LED bulb light driver |
| CN105142267A (en) * | 2015-08-08 | 2015-12-09 | 黄鹂 | Constant-voltage and constant-current light-emitting diode (LED) bulb lamp |
| CN105223533A (en) * | 2015-10-30 | 2016-01-06 | 宁波锦澄电子科技有限公司 | A kind of superhigh precision responds DC current prover circuit fast |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20160928 |