CN105960053A - High-stability driving system for blue light LED - Google Patents
High-stability driving system for blue light LED Download PDFInfo
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- CN105960053A CN105960053A CN201610347714.9A CN201610347714A CN105960053A CN 105960053 A CN105960053 A CN 105960053A CN 201610347714 A CN201610347714 A CN 201610347714A CN 105960053 A CN105960053 A CN 105960053A
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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]
- H05B45/40—Details of LED load circuits
-
- 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
-
- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective 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]
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Abstract
The invention discloses a high-stability driving system for a blue light LED. The system is characterized by mainly comprising a control chip U1, a reference correction circuit, a gradient compensation circuit, a logic buffering circuit and an overcurrent protection output voltage stabilizing circuit, wherein the reference correction circuit, the gradient compensation circuit and the logic buffering circuit are connected with the control chip U1, and the overcurrent protection output voltage stabilizing circuit is connected in series between the reference correction circuit and the logic buffering circuit; and the overcurrent protection output voltage stabilizing circuit is composed of an overcurrent protection circuit whose input end is connected with the reference correction circuit and a voltage stabilizing circuit whose input end is connected with the output end of the overcurrent protection circuit. According to the high-stability driving system, external electromagnetic interference can be eliminated or attenuated, voltage and current are limited so that the voltage and current are kept stable, and in practical use, the anti-electromagnetic-interference capability of the high-stability driving system is 2.5 times that of a present driving system, stable driving current can be output, and it is effectively ensured that the brightness of blue light LED lamps is stable.
Description
Technical field
The present invention relates to electric energy-saving field, specifically, be a kind of high stable state drive system of blue-ray LED.
Background technology
LED is as novel energy-conserving light source, with its environmental protection, the feature such as energy-conservation, life-span length, volume are little,
Through extensively being received by people and using.Owing to LED is the semiconductor device of characteristic sensitivity, there is again negative temperature
Characteristic, therefore in application process, the drive system of LED is stable to LED, reliable duty plays
Considerable effect.
Along with people's living standard constantly improves, all energy to LED brightness at home or in shop
Consumption is had higher requirement, i.e. people need, while improving LED brightness further, to need LED
Light fixture has lower energy consumption.Then, the driving stability of LED drive system is just proposed more by people
High requirement.But, it is poor to there is anti-electromagnetic interference capability in traditional LED drive system that current people are used,
Load capacity is poor, drives unstable problem, it is impossible to meet the requirement of people.
Therefore it provides one can improve anti-electromagnetic interference capability, can ensure that again and drive stable LED to drive
System is the task of top priority.
Summary of the invention
It is an object of the invention to the ability overcoming LED drive system of the prior art to there is electromagnetism interference
Difference, drives unstable defect, it is provided that a kind of blue-ray LED by high stable state drive system.
The present invention is achieved through the following technical solutions: a kind of blue-ray LED is by high stable state drive system, main
Will by control chip U1, the reference correction circuit that is all connected with control chip U1, slope equalizer and
Logic buffer circuit, and the overcurrent protection output being serially connected between reference correction circuit and logic buffer circuit
Mu balanced circuit forms；Described reference correction circuit is connected with logic buffer circuit.
The overcurrent protection that described overcurrent protection output voltage stabilizing circuit is connected with reference correction circuit by input
Circuit, the mu balanced circuit being connected with the outfan of current foldback circuit with input forms；Described voltage stabilizing electricity
The outfan on road is connected with logic buffer circuit.
Described current foldback circuit by audion VT4, audion VT5, negative pole after resistance R21 with three poles
The pole that the colelctor electrode of pipe VT5 is connected, positive pole colelctor electrode with audion VT4 after resistance R20 is connected
Property electric capacity C9, positive pole positive pole with polar capacitor C9 after resistance R17 is connected, negative pole is through resistance R18
Polar capacitor C8, the P pole that colelctor electrode with audion VT4 is connected afterwards after resistance R19 with polar capacitor
The diode that the negative pole of C8 is connected, N pole emitter stage with audion VT4 after resistance R22 is connected
D6, negative pole base stage with audion VT5 after adjustable resistance R26 is connected, positive pole after resistance R23 with
The polar capacitor C10 that the emitter stage of audion VT4 is connected, and the colelctor electrode of N pole and audion VT5
Be connected, diode D7 composition that P pole base stage with audion VT4 after resistance R29 is connected；Institute
State the positive pole input as current foldback circuit of polar capacitor C8；The emitter stage of described audion VT5
With the outfan that the negative pole of polar capacitor C10 is collectively forming current foldback circuit.
Described mu balanced circuit is by voltage stabilizing chip U2, and positive pole is managed with the IN of voltage stabilizing chip U2 after resistance R27
The polar capacitor C12 of ground connection after foot is connected, negative pole is connected with the GND pin of voltage stabilizing chip U2, one
End is connected with the negative pole of polar capacitor C12, the other end is connected with the OUGT pin of voltage stabilizing chip U2
Resistance R28, and positive pole sequentially after resistance R25 and resistance R24 with the emitter stage phase of audion VT5
The polar capacitor C11 composition that connection, negative pole are connected with the OUT pin of voltage stabilizing chip U2；Described voltage stabilizing
The IN pin of chip U2 is connected with the negative pole of polar capacitor C10, and its OUT pin is as mu balanced circuit
Outfan be connected with logic buffer circuit.
Described reference correction circuit is connected with logic buffer circuit；Described reference correction circuit is by audion
VT1, audion VT2, P pole is connected with the base stage of audion VT1, the base of N pole and audion VT2
Diode D2, the P pole that pole is connected is connected with the colelctor electrode of audion VT1, N pole is sequentially through resistance
The diode D1 being connected with the base stage of audion VT2 after R2 and resistance R1, positive pole after inductance L with
The polar capacitor C1 that the base stage of audion VT2 is connected, negative pole is connected with the N pole of diode D1, just
Pole base stage with audion VT2 after resistance R3 is connected, negative pole after resistance R4 with audion VT1
The polar capacitor C2 that is connected of emitter stage, and positive pole after resistance R5 with the colelctor electrode of audion VT2
Be connected, negative pole be connected with the GND pin of control chip U1 after ground connection polar capacitor C3 composition；
The grounded collector of described audion VT1；The positive pole of described polar capacitor C1 and the N pole of diode D1
It is collectively forming the input of reference correction circuit；The emitter stage of described audion VT2 is as reference correction circuit
Outfan and be connected with the positive pole of polar capacitor C8.
Described slope equalizer by audion VT3, negative pole is connected with the LD pin of control chip U1,
The polar capacitor C6 that positive pole is connected with the base stage of audion VT3, positive pole after resistance R16 with audion
The emitter stage of VT3 is connected, negative pole sequentially after resistance R14 and resistance R13 with the RL of control chip U1
The polar capacitor C7 that pin is connected, and one end is connected with the colelctor electrode of audion VT3, the other end with
The negative pole of polar capacitor C7 be connected after ground connection adjustable resistance R15 composition.
Described logic buffer circuit is by field effect transistor MOS1, field effect transistor MOS2, and P pole is sequentially through resistance
After R12 and resistance R11 the CS pin with control chip U1 be connected, N pole and field effect transistor MOS2
The diode D5 that source electrode is connected, one end is connected with the GATE pin of control chip U1, the other end with
Resistance R10, the N pole that the grid of field effect transistor MOS2 is connected is connected with the source electrode of field effect transistor MOS1
Connect, diode D4 that P pole is connected with the VIN pin of control chip U1 after resistance R9, negative pole with
The drain electrode of field effect transistor MOS2 is connected, positive pole after resistance R8 with the drain electrode phase of field effect transistor MOS2
The polar capacitor C5 connected, one end is connected with the drain electrode of field effect transistor MOS1, the other end and voltage stabilizing chip
The resistance R6 that the OUT pin of U2 is connected, positive pole after resistance R7 with the grid of field effect transistor MOS1
Be connected, the polar capacitor C4 of minus earth, and P pole is connected with the negative pole of polar capacitor C4, N
The diode D3 composition that pole is connected with the OUT pin of voltage stabilizing chip U2；The N of described diode D3
Pole is connected with the positive pole of polar capacitor C4；The drain electrode of described field effect transistor MOS2 is with polar capacitor C5's
Positive pole is collectively forming the outfan of logic buffer circuit and is connected with LED group.
For the practical effect of the present invention, described control chip U1 the most preferentially uses AX9021 integrated
Chip realizes；The most described voltage stabilizing chip U2 the most preferentially have employed the integrated chip of CW7805 and realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention has stronger anti-electromagnetic interference capability, under-voltage overcurrent protection, voltage lockout and electric current
The functions such as restriction, and stable driving electric current can be exported, effectively guarantee the stability of blue LED lamp brightness.
(2) anti-electromagnetic interference capability of the present invention improves than the anti-electromagnetic interference capability of existing drive system
More than 1.5 times,
(3) present invention can effectively promote load capacity, thus can drive more LED group simultaneously,
To meet the demand of people.
(4) overall structure of the present invention is very simple, not only makes and very easy to use, and can be effective
Extend the service life of LED.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the overcurrent protection output voltage stabilizing circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U1, overcurrent protection output voltage stabilizing circuit, benchmark
Correcting circuit, slope equalizer, and logic buffer circuit composition.Described reference correction circuit is by three poles
Pipe VT1, audion VT2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, polarity
Electric capacity C1, polar capacitor C2, polar capacitor C3, inductance L, diode D1, and diode D2 group
Become.
During connection, the P pole of diode D2 is connected with the base stage of audion VT1, N pole and audion
The base stage of VT2 is connected.The P pole of diode D1 is connected with the colelctor electrode of audion VT1, N is the most suitable
Secondary it is connected through resistance R2 base stage with audion VT2 after resistance R1.The positive pole warp of polar capacitor C1
After inductance L, the base stage with audion VT2 is connected, negative pole is connected with the N pole of diode D1.Polarity
The positive pole of electric capacity C2 base stage with audion VT2 after resistance R3 is connected, negative pole after resistance R4 with
The emitter stage of audion VT1 is connected.The positive pole of polar capacitor C3 after resistance R5 with audion VT2
Colelctor electrode be connected, negative pole be connected with the GND pin of control chip U1 after ground connection.
The grounded collector of described audion VT1；The positive pole of described polar capacitor C1 is with diode D1's
N pole is collectively forming the input of reference correction circuit；The emitter stage of described audion VT2 is as N Reference Alignment
The outfan of circuit is also connected with the positive pole of polar capacitor C8.
Further, described slope equalizer is by audion VT3, resistance R13, resistance R14, adjustable
Resistance R15, resistance R16, polar capacitor C6, and polar capacitor C7 form.
During connection, the negative pole of polar capacitor C6 is connected with the LD pin of control chip U1, positive pole and three
The base stage of pole pipe VT3 is connected.The positive pole of polar capacitor C7 after resistance R16 with audion VT3 send out
Emitter-base bandgap grading is connected, negative pole is sequentially connected through resistance R14 RL pin with control chip U1 after resistance R13
Connect.One end of adjustable resistance R15 is connected with the colelctor electrode of audion VT3, the other end and polar capacitor C7
Negative pole be connected after ground connection.
Meanwhile, described logic buffer circuit by field effect transistor MOS1, field effect transistor MOS2, resistance R6,
Resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, polar capacitor C4,
Polar capacitor C5, Zener diode D3, diode D4, and diode D5 form.
During connection, the P pole of diode D5 sequentially after resistance R12 and resistance R11 with control chip U1
CS pin be connected, N pole is connected with the source electrode of field effect transistor MOS2.One end of resistance R10 with
The GATE pin of control chip U1 is connected, the other end is connected with the grid of field effect transistor MOS2.
The N pole of diode D4 is connected with the source electrode of field effect transistor MOS1, P pole after resistance R9 with control core
The VIN pin of sheet U1 is connected.
Wherein, the negative pole of polar capacitor C5 is connected with the drain electrode of field effect transistor MOS2, positive pole is through resistance
After R8, the drain electrode with field effect transistor MOS2 is connected.One end of resistance R6 and the leakage of field effect transistor MOS1
Pole is connected, the other end is connected with the OUT pin of voltage stabilizing chip U2.The positive pole warp of polar capacitor C4
After resistance R7 the grid with field effect transistor MOS1 be connected, minus earth.The P pole of diode D3 and pole
The negative pole of property electric capacity C4 is connected, N pole is connected with the OUT pin of voltage stabilizing chip U2.
The N pole of described diode D3 is connected with the positive pole of polar capacitor C4；Described field effect transistor MOS2
The positive pole of drain electrode and polar capacitor C5 be collectively forming logic buffer circuit outfan and with LED group phase
Connect.
As in figure 2 it is shown, described overcurrent protection output voltage stabilizing circuit is made up of current foldback circuit and mu balanced circuit；
Described current foldback circuit by audion VT4, audion VT5, resistance R17, resistance R18, resistance R19,
Resistance R20, resistance R21, resistance R22, resistance R23, adjustable resistance R26, resistance R29, polarity electricity
Hold C8, polar capacitor C9, polar capacitor C10, diode D6, and diode D7 composition.
During connection, the negative pole of polar capacitor C9 colelctor electrode with audion VT5 after resistance R21 is connected,
Positive pole colelctor electrode with audion VT4 after resistance R20 is connected.The positive pole of polar capacitor C8 is through resistance
After R17 the positive pole with polar capacitor C9 be connected, negative pole after resistance R18 with the current collection of audion VT4
Pole is connected.
Wherein, the P pole of diode D6 negative pole with polar capacitor C8 after resistance R19 be connected, N
Pole emitter stage with audion VT4 after resistance R22 is connected.The negative pole of polar capacitor C10 is through adjustable electric
Resistance R26 after be connected with the base stage of audion VT5, positive pole after resistance R23 with audion VT4 send out
Emitter-base bandgap grading is connected.The N pole of diode D7 is connected with the colelctor electrode of audion VT5, P pole is through resistance R29
Base stage with audion VT4 is connected afterwards.The positive pole of described polar capacitor C8 is as current foldback circuit
Input；The emitter stage of described audion VT5 and the negative pole of polar capacitor C10 are collectively forming overcurrent protection electricity
The outfan on road.
Further, described mu balanced circuit by voltage stabilizing chip U2, resistance R24, resistance R25, resistance R27,
Resistance R28, polar capacitor C11, and polar capacitor C12 form.
During connection, the positive pole of polar capacitor C12 after resistance R27 with the IN pin phase of voltage stabilizing chip U2
Connect, negative pole be connected with the GND pin of voltage stabilizing chip U2 after ground connection.One end of resistance R28 and polarity
The negative pole of electric capacity C12 is connected, the other end is connected with the OUGT pin of voltage stabilizing chip U2.Polarity electricity
The positive pole holding C11 is sequentially connected through resistance R25 emitter stage with audion VT5 after resistance R24, negative
Pole is connected with the OUT pin of voltage stabilizing chip U2.The IN pin of described voltage stabilizing chip U2 and polar capacitor
The negative pole of C10 is connected, and its OUT pin is connected with logic buffer circuit as the outfan of mu balanced circuit.
During operation, the present invention has under-voltage, overcurrent protection function, can effectively prevent the electronic component of the present invention
Being not damaged by, the present invention electromagnetic interference to external world can eliminate or decay, and is carried out by voltage and current
Locking limits, and makes voltage x current held stationary, and the present invention ratio of anti-electromagnetic interference capability in actual use is existing
The anti-electromagnetic interference capability of some drive systems improves more than 1.5 times, can export stable driving electric current, have
The stability guaranteeing blue LED lamp brightness of effect.The present invention can effectively promote load capacity simultaneously, thus
More LED group can be driven simultaneously, and the service life of LED can be effectively extended, to meet people
Demand.For preferably implementing the present invention, described control chip U1 preferentially have employed highly sensitive
The integrated chip of AX9021 realizes.
According to above-described embodiment, can well realize the present invention.
Claims (7)
1. a blue-ray LED is by high stable state drive system, it is characterised in that main by control chip U1,
Reference correction circuit, slope equalizer and the logic buffer circuit being all connected with control chip U1, and
The overcurrent protection output voltage stabilizing circuit composition being serially connected between reference correction circuit and logic buffer circuit；Described
Reference correction circuit is connected with logic buffer circuit；Described overcurrent protection output voltage stabilizing circuit by input with
The current foldback circuit that reference correction circuit is connected, is connected with the outfan of current foldback circuit with input
The mu balanced circuit composition connect；The outfan of described mu balanced circuit is connected with logic buffer circuit；Described mistake is flowed
Protection circuit by audion VT4, audion VT5, negative pole after resistance R21 with the current collection of audion VT5
The polar capacitor C9 that pole is connected, positive pole colelctor electrode with audion VT4 after resistance R20 is connected, just
Pole positive pole with polar capacitor C9 after resistance R17 is connected, negative pole after resistance R18 with audion VT4
Polar capacitor C8, the P pole that is connected of colelctor electrode negative pole with polar capacitor C8 after resistance R19 be connected
Connect, diode D6 that N pole emitter stage with audion VT4 after resistance R22 is connected, negative pole is through can
Adjust after resistance R26 be connected with the base stage of audion VT5, positive pole after resistance R23 with audion VT4
The polar capacitor C10 that is connected of emitter stage, and N pole is connected with the colelctor electrode of audion VT5, P
The diode D7 composition that pole base stage with audion VT4 after resistance R29 is connected；Described polar capacitor
The positive pole of C8 is as the input of current foldback circuit；The emitter stage of described audion VT5 and polar capacitor
The negative pole of C10 is collectively forming the outfan of current foldback circuit.
A kind of blue-ray LED the most according to claim 1 is by high stable state drive system, it is characterised in that
Described mu balanced circuit is by voltage stabilizing chip U2, and positive pole IN pin with voltage stabilizing chip U2 after resistance R27 is connected
Connect, negative pole be connected with the GND pin of voltage stabilizing chip U2 after the polar capacitor C12 of ground connection, one end and pole
The resistance that negative pole is connected, the other end is connected with the OUGT pin of voltage stabilizing chip U2 of property electric capacity C12
R28, and positive pole is sequentially connected through resistance R25 emitter stage with audion VT5 after resistance R24,
The polar capacitor C11 composition that negative pole is connected with the OUT pin of voltage stabilizing chip U2；Described voltage stabilizing chip U2
IN pin be connected with the negative pole of polar capacitor C10, its OUT pin is as the outfan of mu balanced circuit
It is connected with logic buffer circuit.
A kind of blue-ray LED the most according to claim 2 is by high stable state drive system, it is characterised in that
Described reference correction circuit is connected with the base stage of audion VT1 by audion VT1, audion VT2, P pole
Connect, the colelctor electrode of diode D2, P pole that N pole is connected with the base stage of audion VT2 and audion VT1
Be connected, diode that N pole is sequentially connected through resistance R2 base stage with audion VT2 after resistance R1
D1, positive pole base stage with audion VT2 after inductance L is connected, the N pole phase of negative pole and diode D1
The polar capacitor C1 connected, positive pole base stage with audion VT2 after resistance R3 is connected, negative pole is through electricity
The polar capacitor C2 being connected with the emitter stage of audion VT1 after resistance R4, and positive pole is after resistance R5
Be connected with the colelctor electrode of audion VT2, negative pole be connected with the GND pin of control chip U1 after ground connection
Polar capacitor C3 composition；The grounded collector of described audion VT1；The positive pole of described polar capacitor C1
N pole with diode D1 is collectively forming the input of reference correction circuit；The transmitting of described audion VT2
Pole as the outfan of reference correction circuit and is connected with the positive pole of polar capacitor C8.
A kind of blue-ray LED the most according to claim 3 is by high stable state drive system, it is characterised in that
Described slope equalizer is by audion VT3, and negative pole is connected with the LD pin of control chip U1, positive pole
The polar capacitor C6 being connected with the base stage of audion VT3, positive pole after resistance R16 with audion VT3
Emitter stage be connected, negative pole sequentially after resistance R14 and resistance R13 with the RL pin of control chip U1
The polar capacitor C7 being connected, and one end is connected with the colelctor electrode of audion VT3, the other end and polarity
The negative pole of electric capacity C7 be connected after ground connection adjustable resistance R15 composition.
A kind of blue-ray LED the most according to claim 4 is by high stable state drive system, it is characterised in that
Described logic buffer circuit is by field effect transistor MOS1, field effect transistor MOS2, and P pole is sequentially through resistance R12
Be connected with CS pin with control chip U1 after resistance R11, the source electrode of N pole and field effect transistor MOS2
The diode D5 being connected, one end is connected with the GATE pin of control chip U1, the other end is imitated with field
Should resistance R10, the N pole that is connected of the grid of pipe MOS2 be connected with the source electrode of field effect transistor MOS1, P
The diode D4 that pole is connected with the VIN pin of control chip U1 after resistance R9, negative pole and field effect
The drain electrode of pipe MOS2 is connected, positive pole is connected with the drain electrode of field effect transistor MOS2 after resistance R8
Polar capacitor C5, one end is connected with the drain electrode of field effect transistor MOS1, the other end and voltage stabilizing chip U2
The resistance R6 that OUT pin is connected, positive pole grid with field effect transistor MOS1 after resistance R7 is connected,
The polar capacitor C4 of minus earth, and P pole is connected with the negative pole of polar capacitor C4, N pole and voltage stabilizing
The diode D3 composition that the OUT pin of chip U2 is connected；The N pole of described diode D3 and polarity
The positive pole of electric capacity C4 is connected；The drain electrode of described field effect transistor MOS2 is common with the positive pole of polar capacitor C5
Form the outfan of logic buffer circuit and be connected with LED group.
A kind of blue-ray LED the most according to claim 5 is by high stable state drive system, it is characterised in that
Described control chip U1 is the integrated chip of AX9021.
A kind of blue-ray LED the most according to claim 5 is by high stable state drive system, it is characterised in that
Described voltage stabilizing chip U2 is the integrated chip of CW7805.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610347714.9A CN105960053A (en) | 2016-05-23 | 2016-05-23 | High-stability driving system for blue light LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610347714.9A CN105960053A (en) | 2016-05-23 | 2016-05-23 | High-stability driving system for blue light LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105960053A true CN105960053A (en) | 2016-09-21 |
Family
ID=56909427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610347714.9A Withdrawn CN105960053A (en) | 2016-05-23 | 2016-05-23 | High-stability driving system for blue light LED |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110892790A (en) * | 2017-06-09 | 2020-03-17 | 路创技术有限责任公司 | Load control device with overcurrent protection circuit |
-
2016
- 2016-05-23 CN CN201610347714.9A patent/CN105960053A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110892790A (en) * | 2017-06-09 | 2020-03-17 | 路创技术有限责任公司 | Load control device with overcurrent protection circuit |
| CN110892790B (en) * | 2017-06-09 | 2022-03-18 | 路创技术有限责任公司 | Load control device with overcurrent protection circuit |
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Application publication date: 20160921 |
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