CN108207062A - A kind of high-voltage LED controller for possessing output short circuit protection function - Google Patents
A kind of high-voltage LED controller for possessing output short circuit protection function Download PDFInfo
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- CN108207062A CN108207062A CN201810099893.8A CN201810099893A CN108207062A CN 108207062 A CN108207062 A CN 108207062A CN 201810099893 A CN201810099893 A CN 201810099893A CN 108207062 A CN108207062 A CN 108207062A
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- 230000008878 coupling Effects 0.000 claims description 40
- 238000010168 coupling process Methods 0.000 claims description 40
- 238000005859 coupling reaction Methods 0.000 claims description 40
- 230000005611 electricity Effects 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The present invention proposes a kind of high-voltage LED controller for possessing output short circuit protection function, which is characterized in that including：MCU, power supply circuit, light modulation processing circuit and protection circuit; the protection circuit is set between the MCU and light modulation processing circuit; it feeds back output terminal whether short circuit condition of light modulation processing circuit to the MCU; have, MCU turns off the rgb signal output of its own, can respond rapidly to output terminal short-circuit conditions to realize protection；Circuit structure of the present invention is simple, practical, effective, is suitable for promoting the use of in LED controller.
Description
Technical field
The present invention relates to a kind of high-voltage LED controllers for possessing output short circuit protection function.
Background technology
The design voltage of high-pressure type LED controller is ac/dc 220V voltages, including by high pressure switch to LED light and
The power supply circuit of low pressure needed for controller internal circuit connects and adjusts the light modulation processing circuit and MCU of LED light effect（It is micro-
Controller）.Existing high-voltage LED controller is normally only the protection for focusing on electric input side, by setting varistor, fuse
Conventional means is waited to increase safety coefficient, but the outlet side for having connection LED lamp does not consider there are corresponding Preservation tactics then.
In actual use, LED lamp is due to internal wiring failure or extraneous conductor（Dust, water impurity etc.）Short circuit can occur, this is similary
Detrimental effects will be caused to LED controller.
Invention content
The defects of to overcome in the prior art, the present invention propose a kind of high-voltage LED control for possessing output short circuit protection function
Device processed is built-in with the protection circuit of response output terminal short-circuit conditions, responds rapidly to realize protection, particular technique content is such as
Under：
A kind of high-voltage LED controller for possessing output short circuit protection function, including：MCU, power supply circuit, light modulation processing circuit
And protection circuit, the protection circuit are set between the MCU and light modulation processing circuit, feed back and dim to the MCU
The output terminal of processing circuit whether short circuit condition, has, and MCU turns off the rgb signal output of its own.
In one or more embodiments of the invention, the power supply circuit includes the first electricity for generating first voltage
Source circuit and the second source circuit for generating second voltage；
The light modulation processing circuit includes the first processing circuit for being correspondingly connected to the Red color control signal end R of MCU, is correspondingly connected with
To MCU green color control signal end G second processing circuit and be correspondingly connected at the third of Blue color control signal end B of MCU
Manage circuit；
First processing circuit includes optical coupling module U702, and 3 ends of the optical coupling module U702 outlet sides are connected to VG ends, and 4
The control pole that end is connected to the first output channel CH1, the triode Q702 by triode Q702 is connected to 3 ends, and 4 ends draw the
It one signal end IO-1 and is grounded via resistance 711,1 end of input side is connected to second voltage output, and 2 ends are connected to R controls
Output；
The second processing circuit includes optical coupling module U703, and 3 ends of the optical coupling module U703 outlet sides are connected to VG ends, and 4
The control pole that end is connected to the second output channel CH2, the triode Q703 by triode Q703 is connected to 3 ends, and 4 ends draw the
It binary signal end IO-2 and is grounded via resistance 712,1 end of input side is connected to second voltage output, and 2 ends are connected to G controls
Output；
The third processing circuit includes optical coupling module U704, and 3 ends of the optical coupling module U704 outlet sides are connected to VG ends, and 4
The control pole that end is connected to third output channel CH3, the triode Q704 by triode Q704 is connected to 3 ends, and 4 ends draw the
It three signal end IO-3 and is grounded via resistance 713,1 end of input side is connected to second voltage output, and 2 ends are connected to B controls
Output；
The signal at the VG ends is generated by MCU, and optical coupling module U705, the optocoupler mould are specifically provided between MCU and VG ends
1 end of 705 input side of block is connected to MCU, and 2 ends ground connection, the 3 ends connection first voltage output of output terminal, 4 ends pass through several electricity
Resistance ground connection, the control pole equipped with triode Q705, the triode Q705 at the VG ends and 3 ends of optical coupling module U705 connect
To 4 ends, capacitance C707 is equipped between the VG ends and ground terminal；
The protection circuit includes the first operational amplifier circuit of corresponding first signal end IO-1, corresponds to the second of second signal end IO-2
The third operational amplifier circuit and first, second, and third operational amplifier circuit of connection of operational amplifier circuit and corresponding third signal end IO-3 are defeated
The optical coupling module U602 of outlet；
First operational amplifier circuit includes operational amplifier U601A, diode D601, capacitance C601, C602 and C603, Yi Ji electricity
R601, R602, R603, R604, R605 and R606 are hindered, the positive terminal of the operational amplifier U601A is through resistance R601, capacitance
C602 and C603 is connected to the first signal end IO-1 of light modulation processing circuit, and negative phase end is connected to resistance R601 and capacitance C602
Between point of contact, the cathode that output terminal connects the diode D601 is simultaneously connected to its negative phase end via capacitance C601, described
Resistance R603, R604 are in parallel with the capacitance C603 respectively, and the positive terminal of the operational amplifier is through resistance R602 connections first
The first electricity of anode tap connection of voltage output, its negative phase end through the output of resistance R603 connections connection first voltage, diode D601
Pressure output；Second operational amplifier circuit and third operational amplifier circuit have the circuit structure identical with first operational amplifier circuit, the
First, second and the output terminal of third operational amplifier circuit be commonly connected to the input side of the optical coupling module U602, the optical coupling module
602 outlet side is connected to the IE ends of MCU through diode D604.
In one or more embodiments of the invention, the input side connection electric main of the power supply circuit；
First power circuit includes the first rectifier bridge stack BD101, transformer unit, the first Power Management Unit U1 and feedback
Unit, between the original grade coil both ends of the transformer unit series connection be connected to resistance R1 and diode D1, resistance R1A, capacitance C1
In parallel with resistance R1, the anode of the diode D1 is connected to the first Power Management Unit U1；The secondary grade of transformer unit
Coil is exported through diode D3, inductance L1 the production second voltage, the both ends of the inductance L1 be connected to respectively capacitance EC4 and
EC5, the capacitance EC5 are parallel with resistance R5；The feedback unit includes optical coupling module U2, and input side is connected to transformer list
The subgrade coil of member, outlet side are connected to the MCU；
The second source circuit include the second rectifier bridge stack BD102, second source administrative unit U31, diode D31, D32 and
D33, voltage-stabiliser tube ZD31, capacitance C31, C32, C33 and C34, inductance L31 and several resistance, the second rectifier bridge stack BD102 are defeated
It is connected between outlet and ground terminal equipped with diode D31 and capacitance C33, and the point of contact connection between diode D31 and capacitance C33
To the input side of second source administrative unit U31, the outlet side of the second source administrative unit U31 generates the first voltage
Output.
In one or more embodiments of the invention, the first voltage is+12V, and the second voltage is+5V.
In one or more embodiments of the invention, the outlet side of the optical coupling module U2 is connected to the first power management
The zero current detection end ZCD of unit U1, input side are connected with resistance R7；The cathode of the diode D3 is successively via resistance
R8, R7 and voltage-stabiliser tube U3 ground connection.
The beneficial effects of the invention are as follows：MCU, power supply circuit, light modulation processing circuit and protection circuit are specifically included, it is described
Protection circuit is set between the MCU and light modulation processing circuit, and the output terminal for feeding back light modulation processing circuit to the MCU has
No short circuit condition, has, and MCU turns off the rgb signal output of its own, responds rapidly to output terminal short-circuit conditions to realize protection；This
Invention circuit structure is simple, practical, effective, is suitable for promoting the use of in LED controller.
Description of the drawings
Fig. 1 is the schematic diagram of the high-voltage LED controller for possessing output short circuit protection function of the present invention.
Fig. 2 is the electrical block diagram of the power supply circuit of the present invention.
Fig. 3 is the electrical block diagram one of the protection circuit of the present invention.
Fig. 4 is the electrical block diagram two of the protection circuit of the present invention.
Fig. 5 is the electrical block diagram of the light modulation processing circuit of the present invention.
Fig. 6 is the output interface schematic diagram of the light modulation processing circuit of the present invention.
Fig. 7 is the MCU output interface schematic diagrames of the present invention.
Specific embodiment
Below in conjunction with attached drawing, application scheme is further described：
Referring to attached drawing 1, a kind of high-voltage LED controller for possessing output short circuit protection function, including：MCU, power supply circuit, tune
Optical processing circuit and protection circuit, the protection circuit is set between the MCU and light modulation processing circuit, to described
The output terminal whether short circuit condition of MCU feedback light modulation processing circuits, has, and MCU turns off the rgb signal output of its own.
Referring to attached drawing 2, the input side of power supply circuit connection alternating current 220V alternating current, including for generating first voltage
The first power circuit and second source circuit for generating second voltage；The first voltage is+12V, second electricity
It presses as+5V.
First power circuit include the first rectifier bridge stack BD101, transformer unit, the first Power Management Unit U1 and
Feedback unit, between the original grade coil both ends of the transformer unit series connection be connected to resistance R1 and diode D1, resistance R1A, electricity
Appearance C1 is in parallel with resistance R1, and the anode of the diode D1 is connected to the first Power Management Unit U1；Transformer unit
Subgrade coil is exported through diode D3, inductance L1 the production second voltage, and the both ends of the inductance L1 are connected to capacitance respectively
EC4 and EC5, the capacitance EC5 are parallel with resistance R5；The feedback unit includes optical coupling module U2, and input side is connected to change
The subgrade coil of depressor unit, outlet side are connected to the MCU；
The second source circuit include the second rectifier bridge stack BD102, second source administrative unit U31, diode D31, D32 and
D33, voltage-stabiliser tube ZD31, capacitance C31, C32, C33 and C34, inductance L31 and several resistance, the second rectifier bridge stack BD102 are defeated
It is connected between outlet and ground terminal equipped with diode D31 and capacitance C33, and the point of contact connection between diode D31 and capacitance C33
To the input side of second source administrative unit U31, the outlet side of the second source administrative unit U31 generates the first voltage
Output.
The outlet side of the optical coupling module U2 is connected to the zero current detection end ZCD of the first Power Management Unit U1, input side
It is connected with resistance R7；The cathode of the diode D3 is grounded successively via resistance R8, R7 and voltage-stabiliser tube U3.
Referring to attached drawing 5, the light modulation processing circuit includes being correspondingly connected at the first of the Red color control signal end R of MCU
Circuit is managed, be correspondingly connected to the second processing circuit of the green color control signal end G of MCU and is correspondingly connected to the blue control of MCU
The third processing circuit of signal end B；
First processing circuit includes optical coupling module U702, and 3 ends of the optical coupling module U702 outlet sides are connected to VG ends, and 4
The control pole that end is connected to the first output channel CH1, the triode Q702 by triode Q702 is connected to 3 ends, and 4 ends draw the
It one signal end IO-1 and is grounded via resistance 711,1 end of input side is connected to second voltage output, and 2 ends are connected to R controls
Output；
The second processing circuit includes optical coupling module U703, and 3 ends of the optical coupling module U703 outlet sides are connected to VG ends, and 4
The control pole that end is connected to the second output channel CH2, the triode Q703 by triode Q703 is connected to 3 ends, and 4 ends draw the
It binary signal end IO-2 and is grounded via resistance 712,1 end of input side is connected to second voltage output, and 2 ends are connected to G controls
Output；
The third processing circuit includes optical coupling module U704, and 3 ends of the optical coupling module U704 outlet sides are connected to VG ends, and 4
The control pole that end is connected to third output channel CH3, the triode Q704 by triode Q704 is connected to 3 ends, and 4 ends draw the
It three signal end IO-3 and is grounded via resistance 713,1 end of input side is connected to second voltage output, and 2 ends are connected to B controls
Output；
The signal at the VG ends is generated by MCU, and optical coupling module U705, the optocoupler mould are specifically provided between MCU and VG ends
1 end of 705 input side of block is connected to MCU, and 2 ends ground connection, the 3 ends connection first voltage output of output terminal, 4 ends pass through several electricity
Resistance ground connection, the control pole equipped with triode Q705, the triode Q705 at the VG ends and 3 ends of optical coupling module U705 connect
To 4 ends, capacitance C707 is equipped between the VG ends and ground terminal；
Referring to attached drawing 3 and 4, the protection circuit includes the first operational amplifier circuit of corresponding first signal end IO-1, corresponding second letter
Number the second operational amplifier circuit of end IO-2 and first, second He of third operational amplifier circuit and connection of corresponding third signal end IO-3
The optical coupling module U602 of third operational amplifier circuit output terminal；
First operational amplifier circuit includes operational amplifier U601A, diode D601, capacitance C601, C602 and C603, Yi Ji electricity
R601, R602, R603, R604, R605 and R606 are hindered, the positive terminal of the operational amplifier U601A is through resistance R601, capacitance
C602 and C603 is connected to the first signal end IO-1 of light modulation processing circuit, and negative phase end is connected to resistance R601 and capacitance C602
Between point of contact, the cathode that output terminal connects the diode D601 is simultaneously connected to its negative phase end via capacitance C601, described
Resistance R603, R604 are in parallel with the capacitance C603 respectively, and the positive terminal of the operational amplifier is through resistance R602 connections first
The first electricity of anode tap connection of voltage output, its negative phase end through the output of resistance R603 connections connection first voltage, diode D601
Pressure output；
Second operational amplifier circuit includes operational amplifier U602A, diode D602, capacitance C604, C605 and C606, Yi Ji electricity
Hinder R609, R610, R611, R612 and R613, the positive terminal of the operational amplifier U602A through resistance R609, capacitance C604 and
C606 is connected to the second signal end IO-2 of light modulation processing circuit, and negative phase end, which is connected between resistance R609 and capacitance C604, to be connected
Node, output terminal connect the cathode of the diode D602 and are connected to its negative phase end, the resistance via capacitance C605
R612, R613 are in parallel with the capacitance C606 respectively, and the positive terminal of the operational amplifier is through resistance R610 connection first voltages
Output, its negative phase end are through resistance R611 connections connection first voltage output；
The third operational amplifier circuit includes operational amplifier U603A, diode D603, capacitance C607, C608 and C609, Yi Ji electricity
Hinder R616, R617, R618, R619 and R620, the positive terminal of the operational amplifier U603A through resistance R616, capacitance C607 and
C608 is connected to the third signal end IO-3 of light modulation processing circuit, and negative phase end, which is connected between resistance R616 and capacitance C607, to be connected
Node, output terminal connect the cathode of the diode D603 and are connected to its negative phase end, the resistance via capacitance C609
R619, R620 are in parallel with the capacitance C608 respectively, and the positive terminal of the operational amplifier is through resistance R617 connection first voltages
Output, its negative phase end are through resistance R618 connections connection first voltage output；
The output terminal of first, second, and third operational amplifier circuit（That is the anode of diode D601, D602 and D603）Connect jointly
The input side of the optical coupling module U602 is connected to, the outlet side of the optical coupling module 602 is connected to the IE of MCU through diode D604
End（That is MCU receives the input terminal of feedback signal）.
After the CH1 in output channel, any channel short circuit of CH2, CH3, it is available to by IO-1/2/3 by signal is detected
Protect circuit.After protecting processing of circuit, optical coupling module U602 is supplied to, is sent to MCU processing to close by the R, G, B of its output
Signal is controlled, realizes protection.
It is described light modulation processing circuit, MCU output interface can refer to attached drawing 6 and 7.
It is that above-mentioned preferred embodiment should be regarded as application scheme embodiment for example, all with application scheme thunder
Same, approximation or the technology deduction made based on this, replacement, improvement etc. are regarded as the protection domain of this patent.
Claims (5)
1. a kind of high-voltage LED controller for possessing output short circuit protection function, which is characterized in that including：MCU, power supply circuit, tune
Optical processing circuit and protection circuit, the protection circuit is set between the MCU and light modulation processing circuit, to described
The output terminal whether short circuit condition of MCU feedback light modulation processing circuits, has, and MCU turns off the rgb signal output of its own.
2. the high-voltage LED controller according to claim 1 for possessing output short circuit protection function, it is characterised in that：It is described
Power supply circuit includes generating the first power circuit of first voltage and the second source circuit for generating second voltage；
The light modulation processing circuit includes the first processing circuit for being correspondingly connected to the Red color control signal end R of MCU, is correspondingly connected with
To MCU green color control signal end G second processing circuit and be correspondingly connected at the third of Blue color control signal end B of MCU
Manage circuit；
First processing circuit includes optical coupling module U702, and 3 ends of the optical coupling module U702 outlet sides are connected to VG ends, and 4
The control pole that end is connected to the first output channel CH1, the triode Q702 by triode Q702 is connected to 3 ends, and 4 ends draw the
It one signal end I0-1 and is grounded via resistance 711,1 end of input side is connected to second voltage output, and 2 ends are connected to R controls
Output；
The second processing circuit includes optical coupling module U703, and 3 ends of the optical coupling module U703 outlet sides are connected to VG ends, and 4
The control pole that end is connected to the second output channel CH2, the triode Q703 by triode Q703 is connected to 3 ends, and 4 ends draw the
It binary signal end I0-2 and is grounded via resistance 712,1 end of input side is connected to second voltage output, and 2 ends are connected to G controls
Output；
The third processing circuit includes optical coupling module U704, and 3 ends of the optical coupling module U704 outlet sides are connected to VG ends, and 4
The control pole that end is connected to third output channel CH3, the triode Q704 by triode Q704 is connected to 3 ends, and 4 ends draw the
It three signal end I0-3 and is grounded via resistance 713,1 end of input side is connected to second voltage output, and 2 ends are connected to B controls
Output；
The signal at the VG ends is generated by MCU, and optical coupling module U705, the optocoupler mould are specifically provided between MCU and VG ends
1 end of 705 input side of block is connected to MCU, and 2 ends ground connection, the 3 ends connection first voltage output of output terminal, 4 ends pass through several electricity
Resistance ground connection, the control pole equipped with triode Q705, the triode Q705 at the VG ends and 3 ends of optical coupling module U705 connect
To 4 ends, capacitance C707 is equipped between the VG ends and ground terminal；
The protection circuit includes the first operational amplifier circuit of corresponding first signal end I0-1, corresponds to the second of second signal end I0-2
The third operational amplifier circuit and first, second, and third operational amplifier circuit of connection of operational amplifier circuit and corresponding third signal end I0-3 are defeated
The optical coupling module U602 of outlet；
First operational amplifier circuit includes operational amplifier U601A, diode D601, capacitance C601, C602 and C603, Yi Ji electricity
R601, R602, R603, R604, R605 and R606 are hindered, the positive terminal of the operational amplifier U601A is through resistance R601, capacitance
C602 and C603 is connected to the first signal end I0-1 of light modulation processing circuit, and negative phase end is connected to resistance R601 and capacitance C602
Between point of contact, the cathode that output terminal connects the diode D601 is simultaneously connected to its negative phase end via capacitance C601, described
Resistance R603, R604 are in parallel with the capacitance C603 respectively, and the positive terminal of the operational amplifier is through resistance R602 connections first
The first electricity of anode tap connection of voltage output, its negative phase end through the output of resistance R603 connections connection first voltage, diode D601
Pressure output；Second operational amplifier circuit and third operational amplifier circuit have the circuit structure identical with first operational amplifier circuit, the
First, second and the output terminal of third operational amplifier circuit be commonly connected to the input side of the optical coupling module U602, the optical coupling module
602 outlet side is connected to the IE ends of MCU through diode D604.
3. the high-voltage LED controller according to claim 1 for possessing output short circuit protection function, it is characterised in that：It is described
The input side connection electric main of power supply circuit；
First power circuit includes the first rectifier bridge stack BD101, transformer unit, the first Power Management Unit U1 and feedback
Unit, between the original grade coil both ends of the transformer unit series connection be connected to resistance R1 and diode D1, resistance R1A, capacitance C1
In parallel with resistance R1, the anode of the diode D1 is connected to the first Power Management Unit U1；The secondary grade of transformer unit
Coil is exported through diode D3, inductance L1 the production second voltage, the both ends of the inductance L1 be connected to respectively capacitance EC4 and
EC5, the capacitance EC5 are parallel with resistance R5；The feedback unit includes optical coupling module U2, and input side is connected to transformer list
The subgrade coil of member, outlet side are connected to the MCU；
The second source circuit include the second rectifier bridge stack BD102, second source administrative unit U31, diode D31, D32 and
D33, voltage-stabiliser tube ZD31, capacitance C31, C32, C33 and C34, inductance L31 and several resistance, the second rectifier bridge stack BD102 are defeated
It is connected between outlet and ground terminal equipped with diode D31 and capacitance C33, and the point of contact connection between diode D31 and capacitance C33
To the input side of second source administrative unit U31, the outlet side of the second source administrative unit U31 generates the first voltage
Output.
4. the high-voltage LED controller according to claim 3 for possessing output short circuit protection function, it is characterised in that：It is described
First voltage is+12V, and the second voltage is+5V.
5. the high-voltage LED controller according to claim 3 for possessing output short circuit protection function, it is characterised in that：It is described
The outlet side of optical coupling module U2 is connected to the zero current detection end ZCD of the first Power Management Unit U1, and input side is connected with electricity
Hinder R7；The cathode of the diode D3 is grounded successively via resistance R8, R7 and voltage-stabiliser tube U3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099893.8A CN108207062B (en) | 2018-01-31 | 2018-01-31 | High-voltage LED controller with output short-circuit protection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099893.8A CN108207062B (en) | 2018-01-31 | 2018-01-31 | High-voltage LED controller with output short-circuit protection function |
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| CN108207062B CN108207062B (en) | 2023-12-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052201A (en) * | 2011-10-13 | 2013-04-17 | 欧司朗股份有限公司 | LED control circuit, LED illuminating device and short circuit protection method |
| TW201419934A (en) * | 2012-11-02 | 2014-05-16 | Unity Opto Technology Co Ltd | LED driving circuit |
| CN107071965A (en) * | 2017-03-09 | 2017-08-18 | 珠海雷特科技股份有限公司 | A kind of intelligent signal recognizes LED drive device |
| CN107197569A (en) * | 2017-07-25 | 2017-09-22 | 合肥惠科金扬科技有限公司 | A kind of LED backlight Drive Protecting Circuit and display device |
| CN208143532U (en) * | 2018-01-31 | 2018-11-23 | 珠海雷特科技股份有限公司 | A kind of high-voltage LED controller possessing output short circuit protection function |
-
2018
- 2018-01-31 CN CN201810099893.8A patent/CN108207062B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052201A (en) * | 2011-10-13 | 2013-04-17 | 欧司朗股份有限公司 | LED control circuit, LED illuminating device and short circuit protection method |
| TW201419934A (en) * | 2012-11-02 | 2014-05-16 | Unity Opto Technology Co Ltd | LED driving circuit |
| CN107071965A (en) * | 2017-03-09 | 2017-08-18 | 珠海雷特科技股份有限公司 | A kind of intelligent signal recognizes LED drive device |
| CN107197569A (en) * | 2017-07-25 | 2017-09-22 | 合肥惠科金扬科技有限公司 | A kind of LED backlight Drive Protecting Circuit and display device |
| CN208143532U (en) * | 2018-01-31 | 2018-11-23 | 珠海雷特科技股份有限公司 | A kind of high-voltage LED controller possessing output short circuit protection function |
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| CN108207062B (en) | 2023-12-29 |
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