CN110113845B - Eye protection soft start control circuit of LED illumination power supply - Google Patents
Eye protection soft start control circuit of LED illumination power supply Download PDFInfo
- Publication number
- CN110113845B CN110113845B CN201910491839.2A CN201910491839A CN110113845B CN 110113845 B CN110113845 B CN 110113845B CN 201910491839 A CN201910491839 A CN 201910491839A CN 110113845 B CN110113845 B CN 110113845B
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- diode
- resistance
- resistor
- control circuit
- voltage
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- 238000005286 illumination Methods 0.000 title claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 25
- 238000007599 discharging Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 abstract description 7
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a LED illumination power eye protection soft start control circuit, includes output voltage steady voltage control circuit, output voltage steady voltage control circuit comprises resistance one, resistance two, photoelectric coupler, electric capacity, controllable accurate steady voltage source, resistance three, resistance four, resistance five, still is equipped with control delay loop, control delay loop comprises resistance one, resistance two, photoelectric coupler, diode one, diode two, electrolytic capacitor, resistance six and zener diode. The invention can make the light increase to the maximum brightness softly and slowly, thereby providing the eyes with the adaptive time and effective protection and reducing the current impact to the lamp beads.
Description
Technical Field
The invention relates to an eye-protection soft start control circuit of an LED illumination power supply.
Background
At present, when an LED power supply drives an LED to illuminate, the LED lamp reaches maximum brightness instantly after being electrified because the output voltage is built for too short, so that the LED power supply stimulates and hurts eyes (especially in dark scenes); meanwhile, as the power supply is started quickly, impact current is formed on the lamp beads, the instantaneous temperature rises rapidly, physical changes of thermal expansion and cold contraction are generated, and the service life of the lamp beads is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing the LED illumination power supply eye protection soft start control circuit which can enable light to be gently and slowly increased to the maximum brightness, so that the eyes are protected in an adaptive time and effectively, and meanwhile, current impact on the lamp beads is reduced.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an LED illumination power eye protection soft start control circuit, includes output voltage steady voltage control circuit, output voltage steady voltage control circuit comprises resistance one, resistance two, photoelectric coupler, electric capacity, controllable accurate steady voltage source, resistance three, resistance four, resistance five, still is equipped with control delay loop, control delay loop comprises resistance one, resistance two, photoelectric coupler, diode one, diode two, electrolytic capacitor, resistance six and steady voltage diode, the positive pole of diode one is connected to the public tie point of resistance two, photoelectric coupler, controllable accurate steady voltage source, and the negative pole of diode one is connected to diode two positive poles, six one ends of resistance and electrolytic capacitor positive pole, and electrolytic capacitor's negative pole is connected with the steady voltage diode negative pole after connecting with six other ends of resistance, and the positive pole of steady voltage diode is connected to the output negative pole, and the negative pole of diode two is connected to the output positive pole.
Further, the electrolytic capacitor, the resistor six, the diode two and the voltage stabilizing diode form a capacitor electric quantity discharging loop.
In the output voltage stabilizing control loop, the fourth resistor and the fifth resistor determine the output voltage.
According to the invention, the charging delay circuit is added to control the power output establishment time, the power output voltage is gradually increased from the minimum voltage (minimum brightness voltage) required by the working of the LED lamp beads to the output voltage required by standard brightness (the establishment time can be controlled according to the actual use adjustment parameters), so that the light can be gently and slowly increased to the maximum brightness, the eyes can be protected in a proper time and effectively, and the current impact on the lamp beads is reduced.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Examples
Referring to fig. 1, an LED lighting power supply eye protection soft start control circuit includes an output voltage stabilizing control loop, where the output voltage stabilizing control loop is composed of a resistor one R1, a resistor two R2, a photoelectric coupler P1, a capacitor C1, a controllable precise voltage stabilizing source U1, a resistor three R3, a resistor four R4 and a resistor five R5 (which is the prior art), and a control delay loop is further provided, the control delay loop is composed of a resistor one R1, a resistor two R2, a photoelectric coupler P1, a diode one D1, a diode two D2, an electrolytic capacitor C2, a resistor six R6 and a voltage stabilizing diode D3, the anode of the diode one D1 is connected to the common connection point a of the resistor two R2, the photoelectric coupler P1 and the controllable precise voltage stabilizing source U1, the cathode of the diode one D1 is connected to the anode of the diode two D2, one end of the resistor six R6 and the anode of the electrolytic capacitor C2, the cathode of the electrolytic capacitor C2 is connected to the cathode of the voltage stabilizing diode D3 after being connected to the other end of the resistor six R6, and the anode of the voltage stabilizing diode D3 is connected to the anode of the output voltage stabilizing diode GND 2.
In this embodiment, the electrolytic capacitor C2, the resistor six R6, the diode two D2, and the zener diode D3 form a capacitor electric quantity discharging loop.
In this embodiment, in the output voltage stabilizing control loop, the resistor four R4 and the resistor five R5 determine the output voltage.
When the power supply is electrified, the secondary output end of the power supply starts to establish an output voltage stabilizing sampling voltage signal and a reference voltage signal A through a resistor I R1, a resistor II R2, a photoelectric coupler P1, a capacitor C1, a controllable precise voltage stabilizing source U1, a resistor III R3, a resistor IV R4 and a resistor V R5, when the voltage at the point A is lower than the voltage stabilizing value of a voltage stabilizing diode D3, a control delay loop does not work, when the voltage at the point A reaches the voltage stabilizing value of the voltage stabilizing diode D3, the voltage stabilizing diode D3 is conducted, the reference voltage signal A charges the electrolytic capacitor C2 through the diode I D1 and the voltage stabilizing diode D3, so that the voltage at the point A of the reference voltage signal gradually rises along with the voltage on the electrolytic capacitor C2, the voltage is fed back to a primary power supply voltage output control part through the photoelectric coupler P1, the output voltage VCC is controlled to gradually increase, and when the output voltage VCC is increased to the output voltage value set by the resistor IV R4 and the resistor V R5, the slow starting effect of the power supply output voltage is achieved (the effect of the establishment time can be changed by adjusting the capacitance value of the electrolytic capacitor C2). When the power supply is powered off, the electric quantity on the electrolytic capacitor C2 is connected to the load LED lamp through the diode D2 and the voltage stabilizing diode D3 to be discharged rapidly, and meanwhile, the electric quantity on the electrolytic capacitor C2 is ensured to be discharged completely through the six resistors R6 connected in parallel at the two ends of the electrolytic capacitor C2, so that the output voltage establishment time of the power supply in the next starting process is not influenced.
According to the invention, on the basis of a power supply, the slow starting of the power supply voltage can be realized by additionally adding a small number of components (the diode D1, the resistor six R6, the electrolytic capacitor C2 and the diode two D2), and the soft and slow increase of the brightness of the LED lamp to the maximum brightness is realized, so that eyes of a person are effectively protected and the light attenuation speed of the lamp bead is delayed.
Claims (2)
1. The utility model provides a LED illumination power eye protection soft start control circuit, includes output voltage steady voltage control circuit, output voltage steady voltage control circuit comprises resistance one, resistance two, photoelectric coupler, electric capacity, controllable accurate steady voltage source, resistance three, resistance four, resistance five, its characterized in that: the control delay circuit is composed of a resistor I, a resistor II, a photoelectric coupler, a diode I, a diode II and an electrolytic capacitor, wherein the anode of the diode I is connected to a public connection point of the resistor II, the photoelectric coupler and a controllable precise voltage stabilizing source, the cathode of the diode I is connected to the anode of the diode II, the cathode of the resistor six and the anode of the electrolytic capacitor, the cathode of the electrolytic capacitor is connected with the cathode of the voltage stabilizing diode after being connected with the other end of the resistor six, the anode of the voltage stabilizing diode is connected to the output cathode, the cathode of the diode II is connected to the output anode, and the electrolytic capacitor, the resistor II, the diode II and the voltage stabilizing diode form a capacitor electric quantity discharging circuit.
2. The LED lighting power eye-protection soft start control circuit of claim 1, wherein: in the output voltage stabilizing control loop, the fourth resistor and the fifth resistor determine the output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491839.2A CN110113845B (en) | 2019-06-06 | 2019-06-06 | Eye protection soft start control circuit of LED illumination power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491839.2A CN110113845B (en) | 2019-06-06 | 2019-06-06 | Eye protection soft start control circuit of LED illumination power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110113845A CN110113845A (en) | 2019-08-09 |
| CN110113845B true CN110113845B (en) | 2024-03-22 |
Family
ID=67494287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910491839.2A Active CN110113845B (en) | 2019-06-06 | 2019-06-06 | Eye protection soft start control circuit of LED illumination power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110113845B (en) |
Citations (12)
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|---|---|---|---|---|
| CN2909729Y (en) * | 2006-03-17 | 2007-06-06 | 海信集团有限公司 | Power supply soft start-up circuit and TV. set with the soft start-up circuit |
| CN2932822Y (en) * | 2005-12-01 | 2007-08-08 | 敬德元 | Novel switch power circuit |
| CN101154881A (en) * | 2006-09-29 | 2008-04-02 | 群康科技(深圳)有限公司 | Switch power circuit |
| CN201805349U (en) * | 2010-09-21 | 2011-04-20 | 东莞市奥源电子科技有限公司 | Switch power voltage-stabilizing circuit with soft start function |
| JP2012016145A (en) * | 2010-06-30 | 2012-01-19 | Denso Corp | Soft switching signal transmitting apparatus and method for manufacturing the same |
| CN105282893A (en) * | 2015-11-18 | 2016-01-27 | 明纬(广州)电子有限公司 | Alternating-current-monitoring-based LED illumination self-discharge circuit |
| CN206379711U (en) * | 2016-12-19 | 2017-08-04 | 合肥钦力电子有限公司 | New power-off output delay disconnecting circuit |
| CN107094326A (en) * | 2016-02-18 | 2017-08-25 | 海洋王（东莞）照明科技有限公司 | LED lamp controls circuit |
| WO2017152456A1 (en) * | 2016-03-08 | 2017-09-14 | 深圳市华星光电技术有限公司 | Alternating current-to-direct current power supply output system |
| CN206575634U (en) * | 2017-02-27 | 2017-10-20 | 旭源电子（珠海）有限公司 | A kind of dimming control switch LED constant current power supply |
| CN207542990U (en) * | 2017-10-31 | 2018-06-26 | 长沙广义变流技术有限公司 | A kind of soft starting circuit based on TL431 closed-loop controls |
| CN210157437U (en) * | 2019-06-06 | 2020-03-17 | 湖南凯上电子科技有限公司 | Eye-protecting soft-start control circuit for LED lighting power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1608206B1 (en) * | 2004-06-14 | 2009-08-12 | STMicroelectronics S.r.l. | Led driving device with variable light intensity |
| CN107466488B (en) * | 2015-03-30 | 2019-12-10 | 飞利浦照明控股有限公司 | Isolation driver |
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2019
- 2019-06-06 CN CN201910491839.2A patent/CN110113845B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932822Y (en) * | 2005-12-01 | 2007-08-08 | 敬德元 | Novel switch power circuit |
| CN2909729Y (en) * | 2006-03-17 | 2007-06-06 | 海信集团有限公司 | Power supply soft start-up circuit and TV. set with the soft start-up circuit |
| CN101154881A (en) * | 2006-09-29 | 2008-04-02 | 群康科技(深圳)有限公司 | Switch power circuit |
| JP2012016145A (en) * | 2010-06-30 | 2012-01-19 | Denso Corp | Soft switching signal transmitting apparatus and method for manufacturing the same |
| CN201805349U (en) * | 2010-09-21 | 2011-04-20 | 东莞市奥源电子科技有限公司 | Switch power voltage-stabilizing circuit with soft start function |
| CN105282893A (en) * | 2015-11-18 | 2016-01-27 | 明纬(广州)电子有限公司 | Alternating-current-monitoring-based LED illumination self-discharge circuit |
| CN107094326A (en) * | 2016-02-18 | 2017-08-25 | 海洋王（东莞）照明科技有限公司 | LED lamp controls circuit |
| WO2017152456A1 (en) * | 2016-03-08 | 2017-09-14 | 深圳市华星光电技术有限公司 | Alternating current-to-direct current power supply output system |
| CN206379711U (en) * | 2016-12-19 | 2017-08-04 | 合肥钦力电子有限公司 | New power-off output delay disconnecting circuit |
| CN206575634U (en) * | 2017-02-27 | 2017-10-20 | 旭源电子（珠海）有限公司 | A kind of dimming control switch LED constant current power supply |
| CN207542990U (en) * | 2017-10-31 | 2018-06-26 | 长沙广义变流技术有限公司 | A kind of soft starting circuit based on TL431 closed-loop controls |
| CN210157437U (en) * | 2019-06-06 | 2020-03-17 | 湖南凯上电子科技有限公司 | Eye-protecting soft-start control circuit for LED lighting power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110113845A (en) | 2019-08-09 |
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