CN203896539U - Light modulation constant current driving power supply without light modulator and used for LED illumination - Google Patents
Light modulation constant current driving power supply without light modulator and used for LED illumination Download PDFInfo
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- CN203896539U CN203896539U CN201420140605.6U CN201420140605U CN203896539U CN 203896539 U CN203896539 U CN 203896539U CN 201420140605 U CN201420140605 U CN 201420140605U CN 203896539 U CN203896539 U CN 203896539U
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Abstract
The utility model discloses a light modulation constant current driving power supply without a light modulator and used for LED illumination. The driving power supply comprises a power transformation major loop and a control loop connected with each other. The power transformation major loop comprises an alternating current input end, a full bridge rectification circuit converting an inputted power frequency alternating current into a pulse direct current, a DC/DC BUCK conversion circuit converting a pulse direct voltage into a high-frequency pulse direct voltage, and a direct current constant current output circuit converting a stable direct voltage into a stable direct current which are connected in order. The control loop comprises a light modulation mode setting circuit and a light modulation control circuit. The output end of the light modulation mode setting circuit is connected with the input end of the light modulation control circuit. The light modulation constant current driving power supply can achieve LED lamp light modulation only through a common switch, and mainly used for an LED illuminating lamp with a 5-60W replacing-type built-in power supply or an LED lamp with an external power supply.
Description
Technical field
The utility model relates to a kind of driving power, relates in particular to a kind of light modulation constant-current driving power supply without dimmer for LED illumination.
Background technology
The illuminating product that LED light fixture is brand-new, due to features such as it is energy-efficient, environmental protection, long-lives, has been widely used in the places such as household, business, factory, public place; And have further, the alternative conventional light source of generalization.
LED all adopts DC driven at present, therefore between civil power and LED, needs to add a power supply adaptor, electric main is converted to the direct current of suitable LED, and this power supply adaptor is exactly LED driving power.LED driving power is that power supply supply is converted to specific electric current and voltage with the luminous electric pressure converter of driving LED.Along with the application of LED is increasingly extensive, the performance of LED driving power will more and more be applicable to the requirement of LED, stability, energy saving and life-span length that LED power supply shows possess important effect to the work of LED, and the utilization of LED light regulating technology not only can improve the luminous contrast of LED, can also reduce power consumption, also can provide different lighting environment and effects for different demands simultaneously.
Because LED is a diode, can realize high-speed switch, therefore as long as the driving power of LED is made into pulsed constant current supply, just can change its brightness, pulse-width modulation that Here it is (PWM) light modulation by the method for change pulse duration.And this kind of dimming mode needs dim signal line transmission dim signal to realize, therefore need to switch be changed at original switch place, again load onto the dimmer that is applicable to PWM light modulation, not only cost improves, and need to again fit up, cause the replacing of LED light fixture and popularization to be subject to restriction.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of light modulation constant-current driving power supply without dimmer for LED illumination, it only just can realize the light modulation constant-current driving power supply of LED lamp light-regulating by common switch, be mainly used in the LED lighting of 5～60W replaced type built-in power or the LED light fixture of external power supply, the most obvious with light fixture advantage that can not additional dimmer.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of light modulation constant-current driving power supply without dimmer for LED illumination, it is characterized in that, it comprises interconnective power conversion major loop and control loop, power conversion major loop comprises the ac input end connecting successively, one is converted to input industrial-frequency alternating current the full bridge rectifier of Rectified alternating current, one is converted to pulsating dc voltage the DC/DC BUCK translation circuit of high frequency pulse dc voltage, one transfers stable DC voltage to the direct current constant current output circuit of galvanic current stream, described control loop comprises a light-modulating mode initialization circuit and an adjusting control circuit, the output of light-modulating mode initialization circuit connects the input of described adjusting control circuit, and the output of adjusting control circuit connects the input of described DC/DC BUCK translation circuit.
Preferably, described power conversion major loop also comprises an input EMI filter circuit, and the input of EMI filter circuit connects the output of described ac input end, and the output of described EMI filter circuit connects the input of described full bridge rectifier.
Preferably, described ac input end comprises live wire and zero line, EMI filter circuit comprises the first inductance parallel with one another and the first resistance, live wire is connected with the first inductance, full bridge rectifier is a rectifier bridge and is connected to form by four diode head and the tail, DC/DC BUCK translation circuit comprises the first electric capacity, the second electric capacity, the first diode, the second diode, the 11 resistance, the 12 resistance, the second inductance, the second electric capacity, the 11 resistance, the 12 resistance is connected successively, the first diode and the second Capacitance parallel connection, the first electric capacity and the second Capacitance parallel connection, the second diode is connected with the second inductance, direct current constant current output circuit comprises the 13 resistance, the 3rd electric capacity, light-emitting diode, and the 13 resistance, the 3rd electric capacity, light-emitting diode three are parallel with one another, light-modulating mode initialization circuit comprises the 5th resistance, the 6th resistance, the 4th electric capacity, adjusting control circuit comprises the first chip, the 4th resistance, the 7th resistance, the 9th resistance, the tenth resistance, triode, the 5th resistance, the 6th resistance, the 4th electric capacity, the 4th resistance, the 7th resistance are all connected with the first chip, the 9th resistance is in parallel with the tenth resistance, the tenth resistance is connected with the collector electrode of triode, and the second diode, the second inductance are all connected with the emitter of triode.
Positive progressive effect of the present utility model is: the light modulation constant-current driving power supply for LED illumination of the present utility model is realized the conversion of different brightness by the open and close of switch, thereby realize dimming function, do not pass through dimmer, only realize the adjusting of LED lamp brightness by prevailing switch, reduced costs.The utility model also has the feature that high linear load rate, high efficiency, small size, low in calories and simple realization light modulation, light-modulating mode easily switch, and can be applied to the scheme of built-in power and external power supply simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model for the light modulation constant-current driving power supply without dimmer of LED illumination.
Fig. 2 is for realizing circuit diagram of the present utility model.
Embodiment
As depicted in figs. 1 and 2, the light modulation constant-current driving power supply for LED illumination of the present utility model comprises interconnective power conversion major loop 1 and control loop 2; Power conversion major loop 1 comprises that successively pulsating dc voltage is converted to the DC/DCBUCK translation circuit 14 of high frequency pulse dc voltage, a direct current constant current output circuit 15 that stable DC voltage is transferred to galvanic current stream by full bridge rectifier 13, one that the ac input end 11 that connects, one be converted to input industrial-frequency alternating current Rectified alternating current; Civil power enters power supply by ac input end 11, become high frequency pulse dc electricity through full bridge rectifier 13, then become by DC/DC BUCK translation circuit 14 direct current with relatively stable voltage that is applicable to lamp light source application, finally become constant direct current supply lamp light source by direct current constant current output circuit 15 luminous.Power conversion major loop 1 also comprises an input EMI filter circuit 12, and the input of EMI filter circuit 12 connects the output of described ac input end 11, and the output of described EMI filter circuit 12 connects the input of described full bridge rectifier 13.
Described control loop 2 comprises a light-modulating mode initialization circuit 21 and an adjusting control circuit 22, the output of light-modulating mode initialization circuit 21 connects the input of described adjusting control circuit 22, and the output of adjusting control circuit 22 connects the input of described DC/DC BUCK translation circuit 14.Light-modulating mode initialization circuit 21 is set by internal circuit or outside toggle switch is set light-modulating mode, after setting light-modulating mode, setting signal is sent to adjusting control circuit 22, adjusting control circuit 22 is analyzed by the switching signal of outside lamp switch, result is input to DC/DC BUCK translation circuit 14, by DC/DC BUCK translation circuit 14, result of calculation is input to direct current constant current output circuit 15, thereby control the size of direct current output, and then the brightness of control lamp light source, realize the light modulation of light fixture.Light-modulating mode initialization circuit 21 can be for being set in the device loop of power supply inside, also can be for being set in toggle switch or other block switches of power supply outside, thereby realize non-light-modulating mode, light-modulating mode one (100% brightness and 50% luminance transformation), light-modulating mode two (100% brightness and 25% luminance transformation), light-modulating mode three (100% brightness, 50% brightness and 25% brightness convert successively), these three kinds of light-modulating modes are set according to optimum visual resolving effect, can certainly be according to these three brightness of requirements set.
Ac input end 11 comprises live wire ACL and zero line CAN, EMI filter circuit 12 comprises the first inductance L 1 parallel with one another and the first resistance R 1, live wire ACL is connected with the first inductance L 1, full bridge rectifier 13 is rectifier bridge DB1 and is connected to form by four diode head and the tail, DC/DC BUCK translation circuit 14 comprises the first capacitor C 2, the second capacitor C 4, the first diode D2, the second diode D4, the 11 resistance R 11, the 12 resistance R 12, the second inductance L 4, the second capacitor C 4, the 11 resistance R 11, the 12 resistance R 12 is connected successively, the first diode D2 is in parallel with the second capacitor C 4, the first capacitor C 2 is in parallel with the second capacitor C 4, the second diode D4 is connected with the second inductance L 4, direct current constant current output circuit 15 comprises the 13 resistance R 13, the 3rd capacitor C 6, LED, and the 13 resistance R 13, the 3rd capacitor C 6, LED three are parallel with one another, light-modulating mode initialization circuit 21 comprises the 5th resistance R 5, the 6th resistance R 6, the 4th capacitor C 5, adjusting control circuit 22 comprises the first chip U1, the 4th resistance R 4, the 7th resistance R 7, the 9th resistance R 9, the tenth resistance R 10, triode Q1, the 5th resistance R 5, the 6th resistance R 6, the 4th capacitor C 5, the 4th resistance R 4, the 7th resistance R 7 are all connected with the first chip U1, the 9th resistance R 9 is in parallel with the tenth resistance R 10, the tenth resistance R 10 is connected with the collector electrode of triode Q1, and the second diode D4, the second inductance L 4 are all connected with the emitter of triode Q1.The model of the first chip U1 is IS31LT3938.
When connecting after industrial-frequency alternating current, live wire ACL and zero line CAN power on, and the first inductance L 1, the first resistance R 1 are carried out filtering to noise, and circuit is started working.Industrial-frequency alternating current is transformed into pulsating direct current half-sine pulse ripple by rectifier bridge DB1, by the first capacitor C 2, the sine wave of pulsation being transformed to comparatively galvanic current puts down, this direct current charges to the second capacitor C 4 by the 11 resistance R the 11, the 12 resistance R 12, and to the first chip U1 power supply, make its work.After dead electricity, the second capacitor C is the system restart time 4 discharge times, and before the second capacitor C 4 has been discharged, switch powers on again, and the first chip U1 counts, and judges the signal of switch dimming with this.The direct current of being exported by the first capacitor C 2 is given direct current constant current output circuit supply of electrical energy simultaneously, carry out constant current control by the second diode D4, the second inductance L 4, triode Q1, the 9th resistance R 9, the tenth resistance R 10, make constant output current, the 3rd capacitor C 6 is as the filter capacitor of output point, the 3rd resistance R 3 is carried out auxiliary discharge in the time that system is turn-offed, and makes LED that scintillation can not occur.The 5th resistance R 5, the 6th resistance R 6 are all toggle switch, or outside touch switch, in the time of the 5th resistance R 5 conducting, conditional code is 0, when shutoff, conditional code is 1, the six resistance R 6 conditional code set models with the 5th resistance R 5, therefore the conditional code that the 5th resistance R 5, the 6th resistance R 6 are combined into is " 00; 01; 10,11 ", represents respectively light-modulating mode one, light-modulating mode two, light-modulating mode three, non-light-modulating mode.
The utility model is for the driving of 5～60W LED lighting, the most obvious with light fixture advantage that can not additional dimmer, also there is the feature that high linear load rate, high efficiency, small size, low in calories and simple realization light modulation, light-modulating mode easily switch, can be applied to the scheme of built-in power and external power supply simultaneously.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all those skilled in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in by the determined protection range of claims.
Claims (3)
1. the light modulation constant-current driving power supply without dimmer for LED illumination, it is characterized in that, it comprises interconnective power conversion major loop and control loop, and power conversion major loop comprises that successively pulsating dc voltage is converted to the DC/DC BUCK translation circuit of high frequency pulse dc voltage, a direct current constant current output circuit that stable DC voltage is transferred to galvanic current stream by input industrial-frequency alternating current is converted to Rectified alternating current by an ac input end connecting, one full bridge rectifier, one; Described control loop comprises a light-modulating mode initialization circuit and an adjusting control circuit, the output of light-modulating mode initialization circuit connects the input of described adjusting control circuit, and the output of adjusting control circuit connects the input of described DC/DC BUCK translation circuit.
2. the light modulation constant-current driving power supply without dimmer for LED illumination as claimed in claim 1, it is characterized in that, described power conversion major loop also comprises an input EMI filter circuit, the input of EMI filter circuit connects the output of described ac input end, and the output of described EMI filter circuit connects the input of described full bridge rectifier.
3. the light modulation constant-current driving power supply without dimmer for LED illumination as claimed in claim 1, it is characterized in that, described ac input end comprises live wire and zero line, EMI filter circuit comprises the first inductance parallel with one another and the first resistance, live wire is connected with the first inductance, full bridge rectifier is a rectifier bridge and is connected to form by four diode head and the tail, DC/DC BUCK translation circuit comprises the first electric capacity, the second electric capacity, the first diode, the second diode, the 11 resistance, the 12 resistance, the second inductance, the second electric capacity, the 11 resistance, the 12 resistance is connected successively, the first diode and the second Capacitance parallel connection, the first electric capacity and the second Capacitance parallel connection, the second diode is connected with the second inductance, direct current constant current output circuit comprises the 13 resistance, the 3rd electric capacity, light-emitting diode, and the 13 resistance, the 3rd electric capacity, light-emitting diode three are parallel with one another, light-modulating mode initialization circuit comprises the 5th resistance, the 6th resistance, the 4th electric capacity, adjusting control circuit comprises the first chip, the 4th resistance, the 7th resistance, the 9th resistance, the tenth resistance, triode, the 5th resistance, the 6th resistance, the 4th electric capacity, the 4th resistance, the 7th resistance are all connected with the first chip, the 9th resistance is in parallel with the tenth resistance, the tenth resistance is connected with the collector electrode of triode, and the second diode, the second inductance are all connected with the emitter of triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140605.6U CN203896539U (en) | 2014-03-26 | 2014-03-26 | Light modulation constant current driving power supply without light modulator and used for LED illumination |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420140605.6U CN203896539U (en) | 2014-03-26 | 2014-03-26 | Light modulation constant current driving power supply without light modulator and used for LED illumination |
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| CN203896539U true CN203896539U (en) | 2014-10-22 |
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| CN201420140605.6U Expired - Fee Related CN203896539U (en) | 2014-03-26 | 2014-03-26 | Light modulation constant current driving power supply without light modulator and used for LED illumination |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132027A (en) * | 2016-08-16 | 2016-11-16 | 胡志强 | Two-wire intelligent LED dimming power source |
| CN109819551A (en) * | 2019-02-22 | 2019-05-28 | 无锡安特源科技股份有限公司 | A kind of constant current light modulating device for LED light |
| CN111683436A (en) * | 2020-07-22 | 2020-09-18 | 马乐平 | A kind of LED dimming driver and control method directly controlled by common switch |
-
2014
- 2014-03-26 CN CN201420140605.6U patent/CN203896539U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132027A (en) * | 2016-08-16 | 2016-11-16 | 胡志强 | Two-wire intelligent LED dimming power source |
| CN109819551A (en) * | 2019-02-22 | 2019-05-28 | 无锡安特源科技股份有限公司 | A kind of constant current light modulating device for LED light |
| CN111683436A (en) * | 2020-07-22 | 2020-09-18 | 马乐平 | A kind of LED dimming driver and control method directly controlled by common switch |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: HUGESHINE OPTOELECTRONIC CORPORATION Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: HUGESHINE OPTOELECTRONIC CORPORATION Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20160326 |
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| CF01 | Termination of patent right due to non-payment of annual fee |