CN203279267U - AC (alternating current) driving LED luminance stabilizing apparatus - Google Patents
AC (alternating current) driving LED luminance stabilizing apparatus Download PDFInfo
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- CN203279267U CN203279267U CN2013202047982U CN201320204798U CN203279267U CN 203279267 U CN203279267 U CN 203279267U CN 2013202047982 U CN2013202047982 U CN 2013202047982U CN 201320204798 U CN201320204798 U CN 201320204798U CN 203279267 U CN203279267 U CN 203279267U
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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
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Abstract
The utility model relates to the field of LED energy-saving driving, and especially relates to an AC (alternating current) driving LED luminance stabilizing apparatus. The AC driving LED luminance stabilizing apparatus is characterized by comprising a voltage detection unit, a phase detection unit, a PWM controller and an analog switch, wherein an input end of the voltage detection unit and an input end of the phase detection unit are both connected to a power end; an output end of the voltage detection unit is connected with a first input end of the PWM controller; an output end of the phase detection unit is connected with a second input end of the PWM controller; an output end of the PWM controller is connected with a control end of the analog switch; and one end of the analog switch is grounded, and the other end of the analog switch serves as an output end of the luminance stabilizing apparatus. The AC driving LED luminance stabilizing apparatus, through voltage detection and phase detection of input voltage and through outputting PWM control signals by the PWM controller, controls conduction times of a load under different voltage conditions so as to stabilize power.
Description
Technical field
The utility model relates to the energy-conservation driving of LED field, especially a kind of interchange driving LED brightness stability device.
Background technology
Existing LED power stability device due to the transient fluctuation of input voltage, causes LED the scintillation of short time to occur when the driving LED lamp, stimulates human eye, and human eye is not felt well should.The utility model is controlled the ON time of LED lamp string under different voltage statuss by voltage and phase-detection to the civil power input, avoids input voltage fluctuation to cause the fluctuation of load LED emergent power to produce scintillation.And provide the particular circuit configurations of load, to reach the technique effect that increases LED life-span and stable power output.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of interchange driving LED brightness stability device.
the utility model adopts following scheme to realize: a kind of interchange driving LED brightness stability device, it is characterized in that: comprise a voltage detection unit, one phase detection unit, one PWM controller and an analog switch, the input of described voltage detection unit and the input of phase detection unit all are connected to power end, the output of described voltage detection unit connects the first input end of described PWM controller, the output of described phase detection unit connects the second input of described PWM controller, the output of described PWM controller connects the control end of described analog switch, one end ground connection of described analog switch, the other end of described analog switch is connected to load one end as the output of described brightness stability device, the described load other end connects described power end.
In the utility model one embodiment, described load is a LED lamp string, and described LED lamp string is a sequential control unit in parallel also.
In the utility model one embodiment, described load comprises a LED lamp string and a plurality of driver element; Described a plurality of driver element is cascaded successively and connects described LED lamp string; Described driver element is comprised of a current-limiting circuit, a feedback resistance and a LED lamp string; Described LED lamp string is in parallel with described current-limiting circuit, and described LED lamp string is provided with the end that a feedback output end connects described feedback resistance, the feedback input end of the described current-limiting circuit of other end connection of described feedback resistance.
In the utility model one embodiment, described current-limiting circuit is comprised of a resistance R 1, a resistance R 2, a triode Q1 and a triode Q2; One end of described resistance R 1 is as the input of described current-limiting circuit and connect the collector electrode of described triode Q1, and the other end of described resistance R 1 connects the base stage of described triode Q1 and the collector electrode of described triode Q2; The emitter of described triode Q1 is as the feedback input end of described current-limiting circuit and connect an end of base stage and the described resistance R 2 of described triode Q2; The emitter of described triode Q2 is as the output of described current-limiting circuit and connect the other end of described resistance R 2; Described LED lamp string is followed in series to form by a plurality of LED lamps, and described feedback output end is arranged between the input and output of described LED lamp string.
In the utility model one embodiment, described analog switch is a triode, metal-oxide-semiconductor or multiple tube.
In the utility model one embodiment, described voltage detection unit, phase detection unit and PWM controller are integrated in a chip or with a single-chip microcomputer equivalence and replace.
The utility model is by voltage detecting and phase-detection to input voltage, and by PWM controller output pwm control signal, the ON time of control load under different voltage conditions is with firm power.
Description of drawings
Fig. 1 is a kind of schematic diagram that exchanges driving LED brightness stability device of the utility model.
Fig. 2 is the circuit theory diagrams of the utility model one embodiment.
Fig. 3 is the circuit theory diagrams of another embodiment of the utility model.
Fig. 4 is the circuit theory diagrams of the driver element of load in Fig. 3.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below will by specific embodiment and relevant drawings, the utility model be described in further detail.
the utility model provides a kind of interchange driving LED brightness stability device, it is characterized in that: comprise a voltage detection unit, one phase detection unit, one PWM controller and an analog switch, the input of described voltage detection unit and the input of phase detection unit all are connected to power end, the output of described voltage detection unit connects the first input end of described PWM controller, the output of described phase detection unit connects the second input of described PWM controller, the output of described PWM controller connects the control end of described analog switch, one end ground connection of described analog switch, the other end of described analog switch is connected to load one end as the output of described brightness stability device, the described load other end connects described power end.
as shown in Figure 1, the present embodiment provides a kind of interchange driving LED brightness stability device, it is characterized in that: comprise a voltage detection unit 1, one phase detection unit 2, one PWM controller 3 and an analog switch 4, the input of the input of described voltage detection unit 1 and phase detection unit 2 all is connected to power end, the output of described voltage detection unit 1 connects the first input end of described PWM controller 3, the output of described phase detection unit 2 connects the second input of described PWM controller 3, the output of described PWM controller 3 connects the control end of described analog switch 4, one end ground connection of described analog switch 4, the other end of described analog switch 4 is connected to load 5 one ends as the output of described brightness stability device, described load 5 other ends connect described power end.In the utility model one preferred embodiment, described analog switch is a triode, metal-oxide-semiconductor or multiple tube etc., and described voltage detection unit, phase detection unit and PWM controller can be integrated in a chip or with a single-chip microcomputer equivalence and replace.
As shown in Figure 2, in the utility model one embodiment, described load 5 is a LED lamp string, and described LED lamp string is a sequential control unit in parallel also.
As shown in Figure 3, in another embodiment of the utility model, described load 5 comprises LED lamp string LEDL0 and an a plurality of driver element; Described a plurality of driver element is cascaded successively and connects described LED lamp string LEDL0; Described driver element is comprised of a current-limiting circuit CL, a feedback resistance R and a LED lamp string LEDL; Described LED lamp string LEDL is in parallel with described current-limiting circuit CL, and described LED lamp string LEDL is provided with the end that a feedback output end connects described feedback resistance R, the feedback input end of the described current-limiting circuit CL of other end connection of described feedback resistance R.As shown in Figure 4, described current-limiting circuit CL is comprised of a resistance R 1, a resistance R 2, a triode Q1 and a triode Q2; One end of described resistance R 1 is as the input of described current-limiting circuit CL and connect the collector electrode of described triode Q1, and the other end of described resistance R 1 connects the base stage of described triode Q1 and the collector electrode of described triode Q2; The emitter of described triode Q1 is as the feedback input end of described current-limiting circuit CL and connect an end of base stage and the described resistance R 2 of described triode Q2; The emitter of described triode Q2 is as the output of described current-limiting circuit CL and connect the other end of described resistance R 2; Described LED lamp string LEDL is followed in series to form by a plurality of LED lamps, and described feedback output end is arranged between the input and output of described LED lamp string LEDL.Described load 5 can be other load circuits that can realize similar functions.
In order to allow persons skilled in the art understand better technology contents of the present utility model, below in conjunction with Fig. 1, operation principle of the present utility model is described.
When system starts, voltage detection unit and phase detection unit detect input voltage and the information that detects are sent in the PWM controller, the PWM controller is according to the ON time of information output one pwm control signal that detects in order to the control simulation switch, when high voltage, the conducting in the short period of time of control simulation switch, when low voltage, the conducting within the long time of control simulation switch, power output is stable when being controlled at different voltage.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. one kind exchanges driving LED brightness stability device, it is characterized in that: comprise a voltage detection unit, one phase detection unit, one PWM controller and an analog switch, the input of described voltage detection unit and the input of phase detection unit all are connected to power end, the output of described voltage detection unit connects the first input end of described PWM controller, the output of described phase detection unit connects the second input of described PWM controller, the output of described PWM controller connects the control end of described analog switch, one end ground connection of described analog switch, the other end of described analog switch is connected to load one end as the output of described brightness stability device, the described load other end connects described power end.
2. interchange driving LED brightness stability device according to claim 1, it is characterized in that: described load is a LED lamp string, described LED lamp string is a sequential control unit in parallel also.
3. interchange driving LED brightness stability device according to claim 1, it is characterized in that: described load comprises a LED lamp string and a plurality of driver element; Described a plurality of driver element is cascaded successively and connects described LED lamp string; Described driver element is comprised of a current-limiting circuit, a feedback resistance and a LED lamp string; Described LED lamp string is in parallel with described current-limiting circuit, and described LED lamp string is provided with the end that a feedback output end connects described feedback resistance, the feedback input end of the described current-limiting circuit of other end connection of described feedback resistance.
4. interchange driving LED brightness stability device according to claim 3, it is characterized in that: described current-limiting circuit is comprised of a resistance R 1, a resistance R 2, a triode Q1 and a triode Q2; One end of described resistance R 1 is as the input of described current-limiting circuit and connect the collector electrode of described triode Q1, and the other end of described resistance R 1 connects the base stage of described triode Q1 and the collector electrode of described triode Q2; The emitter of described triode Q1 is as the feedback input end of described current-limiting circuit and connect an end of base stage and the described resistance R 2 of described triode Q2; The emitter of described triode Q2 is as the output of described current-limiting circuit and connect the other end of described resistance R 2; Described LED lamp string is followed in series to form by a plurality of LED lamps, and described feedback output end is arranged between the input and output of described LED lamp string.
5. interchange driving LED brightness stability device according to claim 1, it is characterized in that: described analog switch is a triode, metal-oxide-semiconductor or multiple tube.
6. interchange driving LED brightness stability device according to claim 1 is characterized in that: described voltage detection unit, phase detection unit and PWM controller are integrated in a chip or with a single-chip microcomputer equivalence and replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202047982U CN203279267U (en) | 2013-04-22 | 2013-04-22 | AC (alternating current) driving LED luminance stabilizing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202047982U CN203279267U (en) | 2013-04-22 | 2013-04-22 | AC (alternating current) driving LED luminance stabilizing apparatus |
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| CN203279267U true CN203279267U (en) | 2013-11-06 |
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| CN2013202047982U Expired - Fee Related CN203279267U (en) | 2013-04-22 | 2013-04-22 | AC (alternating current) driving LED luminance stabilizing apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188208A (en) * | 2015-09-02 | 2015-12-23 | 合肥云杉光电科技有限公司 | Alternating-current direct drive light-emitting diode (LED) method for automatically stabilizing power and electronic circuit based on alternating-current direct drive LED method |
| CN106162990A (en) * | 2016-07-05 | 2016-11-23 | 浙江中睿低碳科技有限公司 | LED light device and method of work thereof |
| CN111511078A (en) * | 2020-03-12 | 2020-08-07 | 深圳市海洋王照明工程有限公司 | Spotlight and floodlight switching control circuit and lamp |
-
2013
- 2013-04-22 CN CN2013202047982U patent/CN203279267U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188208A (en) * | 2015-09-02 | 2015-12-23 | 合肥云杉光电科技有限公司 | Alternating-current direct drive light-emitting diode (LED) method for automatically stabilizing power and electronic circuit based on alternating-current direct drive LED method |
| CN105188208B (en) * | 2015-09-02 | 2017-07-07 | 合肥云杉光电科技有限公司 | A kind of exchange of power-self-stablizing is straight to drive LED methods and the electronic circuit based on it |
| CN106162990A (en) * | 2016-07-05 | 2016-11-23 | 浙江中睿低碳科技有限公司 | LED light device and method of work thereof |
| CN111511078A (en) * | 2020-03-12 | 2020-08-07 | 深圳市海洋王照明工程有限公司 | Spotlight and floodlight switching control circuit and lamp |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20180422 |
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| CF01 | Termination of patent right due to non-payment of annual fee |