CN106028537A - Linear constant-current driving circuit-based light-controlled LED switching power supply - Google Patents
Linear constant-current driving circuit-based light-controlled LED switching power supply Download PDFInfo
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- CN106028537A CN106028537A CN201610517020.5A CN201610517020A CN106028537A CN 106028537 A CN106028537 A CN 106028537A CN 201610517020 A CN201610517020 A CN 201610517020A CN 106028537 A CN106028537 A CN 106028537A
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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]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a linear constant-current driving circuit-based light-controlled LED switching power supply, which is characterized by mainly comprising a control chip U2, a transformer T, a diode rectifier U1, a polar capacitor C1, a polar capacitor C2, a voltage-stabilizing diode D1, a pulse adjustment circuit, a voltage conditioning output circuit, and a linear constant-current driving circuit. The pulse adjustment circuit is connected with the control chip U2. The voltage conditioning output circuit is respectively connected with the control chip U2 and the diode rectifier U1. The linear constant-current driving circuit is connected with the voltage conditioning output circuit. According to the technical scheme of the invention, input voltage and current pulses are adjusted dynamically. Meanwhile, the strength of the output voltage and the strength of the output current are adjusted, so that the stability of the output voltage and the stability of the output current are ensured. Therefore, the brightness stability of a light-controlled LED lamp is effectively ensured. Meanwhile, the service life of the LED lamp is prolonged.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of light-operated LED based on linear constant current drive circuit
Switching Power Supply.
Background technology
At present, due to LED have that energy consumption is low, the feature such as length in service life and safety and environmental protection, it is
Become one of main product of people's life lighting.People's many employings acoustic control or light-operated control system in life
System realizes the open and close to LED.Light-operated LED control system can use according to LED because of it
The brightness of environment controls the open and close of LED, and can effectively meet people to LED energy-conservation
The requirement of aspect, and enjoy the favor of people.But, existing light-operated LED power supply exist output voltage and
The problem that electric current is unstable, the brightness causing light-operated LED (liquid crystal diode) lamp is unstable, has had a strong impact on the use of LED
Life-span.
Therefore it provides a kind of light-operated LED power supply that can export stable voltage and current is the task of top priority.
Summary of the invention
It is an object of the invention to overcome light-operated LED power supply of the prior art to there is output voltage and electric current not
Stable defect, it is provided that a kind of based on linear constant current drive circuit light-operated LED Switching Power Supply.
The present invention is achieved through the following technical solutions: a kind of light-operated LED based on linear constant current drive circuit
Switching Power Supply, mainly by control chip U2, transformator T, diode rectifier U1, positive pole is whole with diode
The cathode output end of stream device U1 is connected, negative pole is connected with the cathode output end of diode rectifier U1
Polar capacitor C1, positive pole is connected with the positive pole of polar capacitor C1, negative pole after resistance R1 with polar capacitor
Polar capacitor C2, the N pole that the negative pole of C1 is connected is connected with the VIN pin of control chip U2, P
The Zener diode D1 that pole is connected with the cathode output end of diode rectifier U1, with control chip U2
The phase adjusting circuit being connected, the voltage being connected with control chip U2 and diode rectifier U1 respectively
Conditioning output circuit, and the linear constant current drive circuit composition being connected with voltage conditioning output circuit；Institute
State phase adjusting circuit to be connected with voltage conditioning output circuit；Described transformator T secondary inductance coil same
Name end is connected with one of them input of diode rectifier U1, its non-same polarity and diode rectifier
Another input of U1 is connected；The GND pin ground connection of control chip U2.
Described linear constant current drive circuit by driving chip U3, audion VT4, positive pole after resistance R13 with
The IN pin of driving chip U3 is connected, negative pole as linear constant current drive circuit input and and voltage
Polar capacitor C9, the P pole that is connected of conditioning output circuit after resistance R14 with the BOOST of driving chip U3
The diode D6 that pin is connected, N pole is connected with the SW pin of driving chip U3 after resistance R25,
Negative pole P pole with diode D6 after resistance R16 is connected, positive pole with for the second quarter 6 N pole be connected
Polar capacitor C11, P pole be connected with the positive pole of polar capacitor C11, N pole as linear constant current drive electricity
The Zener diode D7 of the outfan on road, one end is connected with the positive pole of polar capacitor C11, the other end and two
The resistance R17 that the N pole of pole pipe D6 is connected, positive pole is managed with the FB of driving chip U3 after resistance R18
The polar capacitor C12 that foot is connected, negative pole is connected with the base stage of audion VT4, positive pole and driving chip
The FB pin of U3 is connected, the polar capacitor C10 of minus earth, and N pole after resistance R19 with pole
The negative pole of property electric capacity C10 is connected, P pole emitter stage with audion VT4 after resistance R20 is connected
Diode D8 forms；The N pole ground connection of described diode D6；The EN pin of described driving chip U3 with
The positive pole of polar capacitor C9 is connected, its GND pin ground connection；The grounded collector of described audion VT4,
Its emitter stage is connected with the N pole of Zener diode D7.
Described phase adjusting circuit by audion VT1, audion VT2, positive pole after resistance R1 with control core
The polar capacitor C3, P that the SS pin of sheet U2 is connected, negative pole is connected with the emitter stage of audion VT1
Pole is connected with the SIN pin of control chip U2, N pole is connected with the colelctor electrode of audion VT1 two
Pole pipe D2, positive pole COC pin with control chip U2 after resistance R4 is connected, negative pole is through resistance R3
The FC pipe of the polar capacitor C4 that the emitter stage with audion VT1 is connected afterwards, negative pole and control chip U2
The polar capacitor C5 that foot is connected, positive pole colelctor electrode with audion VT2 after resistance R5 is connected, with
And N pole CR pin with control chip U2 after resistance R7 is connected, P pole after resistance R6 with three
The diode D3 composition that the emitter stage of pole pipe VT2 is connected；The N pole of described diode D3 and control core
The SHDN pin of sheet U2 is connected, its P pole as the outfan of phase adjusting circuit and is nursed one's health with voltage
Output circuit is connected；The base stage of described audion VT2 is connected with the base stage of audion VT1, it is launched
Pole be connected with the negative pole of polar capacitor C4 after ground connection；The positive pole of described polar capacitor C4 and audion VT1
Base stage be connected.
Described voltage conditioning output circuit is by field effect transistor MOS, audion VT3, and positive pole is after resistance R8
Be connected with the emitter stage of audion VT3, negative pole is connected with the cathode output end of diode rectifier U1
The drain electrode with field effect transistor MOS after adjustable resistance R12 of polar capacitor C6, N pole be connected, P pole
The Zener diode D5 being connected with the P pole of diode D3, one end is connected with the positive pole of polar capacitor C6,
Inductance L2, the N pole that the other end is connected with the N pole of Zener diode D5 after resistance R10 with field effect
The diode D4 that the source electrode of pipe MOS is connected, P pole is connected with the base stage of audion VT3, negative pole with
The polar capacitor that the colelctor electrode of audion VT3 is connected, positive pole is connected with the grid of field effect transistor MOS
C7, and positive pole be sequentially connected through resistance R9 FB pin with control chip U2 after inductance L1, negative
The polar capacitor C8 composition that pole is connected with the adjustable end of adjustable resistance R12 after resistance R11；Described surely
The N pole of pressure diode D5 is connected with the negative pole of polar capacitor C6；The grid of described field effect transistor MOS
Be connected with VOUT pin and the PWM pin of control chip U2 respectively, it drains and polar capacitor C9
Negative pole be connected；The N pole of described Zener diode D5 is as the outfan of voltage conditioning output circuit.
For the practical effect of the present invention, described control chip U2 the most preferentially uses the integrated chip of L296
Realize；The most described driving chip U3 the most preferentially have employed the integrated chip of LM2734X and realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) pulse of input voltage and electric current can be dynamically adjusted by the present invention, and the present invention can also be right
The intensity of output voltage and electric current is adjusted, and ensures that stablizing of the voltage and current that the present invention exports
Property, effectively ensure that the stability of light-operated LED (liquid crystal diode) lamp brightness, and improve the service life of LED.
(2) present invention can export stable driving voltage and electric current, makes output voltage and electric current and reference voltage
Consistent with electric current, ensure that the present invention exports stable voltage and current.
(3) the control chip U of the present invention uses the integrated chip of L296 to realize, and this chip and external electrical
Road combines and effectively raises stability and the reliability of output voltage of the present invention and electric current.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the linear constant current drive 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 U2, transformator T, diode rectifier U1, pole
Property electric capacity C1, polar capacitor C2, Zener diode D1, linear constant current drive circuit, phase adjusting circuit,
And voltage conditioning output circuit composition.
During connection, the positive pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, it
Negative pole is connected with the cathode output end of diode rectifier U1.The positive pole of polar capacitor C2 and polar capacitor
The positive pole of C1 is connected, negative pole negative pole with polar capacitor C1 after resistance R1 is connected.Zener diode
The N pole of D1 is connected with the VIN pin of control chip U2, its P pole and diode rectifier U1 just
Pole outfan is connected.Phase adjusting circuit is connected with control chip U2.Voltage conditioning output circuit is respectively
It is connected with control chip U2 and diode rectifier U1.Linear constant current drive circuit and voltage conditioning output
Circuit is connected.
Described phase adjusting circuit is connected with voltage conditioning output circuit；Described transformator T secondary inductance line
The Same Name of Ends of circle is connected with one of them input of diode rectifier U1, its non-same polarity and diode
Another input of commutator U1 is connected；The GND pin ground connection of control chip U2；Described transformation
The Same Name of Ends of device T former limit inductance coil is connected with external power source respectively with non-same polarity.
Wherein, described phase adjusting circuit by audion VT1, audion VT2, resistance R2, resistance R3,
Resistance R4, resistance R5, resistance R6, resistance R7, polar capacitor C3, polar capacitor C4, polar capacitor
C5, diode D2, and diode D3 form.
During connection, the positive pole of polar capacitor C3 SS pin with control chip U2 after resistance R1 is connected,
Its negative pole is connected with the emitter stage of audion VT1.The P pole of diode D2 and the SIN of control chip U2
Pin is connected, its N pole is connected with the colelctor electrode of audion VT1.The positive pole of polar capacitor C4 is through electricity
Resistance R4 after be connected with the COC pin of control chip U2, its negative pole after resistance R3 with audion VT1
Emitter stage be connected.The negative pole of polar capacitor C5 is connected with the FC pin of control chip U2, its just
Pole colelctor electrode with audion VT2 after resistance R5 is connected.The N pole of diode D3 is after resistance R7
Be connected with the CR pin of control chip U2, its P pole after resistance R6 with the emitter stage of audion VT2
It is connected.
The N pole of described diode D3 is connected with the SHDN pin of control chip U2, its P pole conduct
The outfan of phase adjusting circuit is also connected with voltage conditioning output circuit；The base stage of described audion VT2
Be connected with the base stage of audion VT1, its emitter stage be connected with the negative pole of polar capacitor C4 after ground connection；
The positive pole of described polar capacitor C4 is connected with the base stage of audion VT1.
Further, described voltage conditioning output circuit by field effect transistor MOS, audion VT3, resistance R8,
Resistance R9, resistance R10, resistance R11, adjustable resistance R12, polar capacitor C6, polar capacitor C7,
Polar capacitor C8, diode D4, Zener diode D5, and inductance L2 form.
During connection, the positive pole of polar capacitor C6 emitter stage with audion VT3 after resistance R8 is connected,
Its negative pole is connected with the cathode output end of diode rectifier U1.The N pole of Zener diode D5 is through adjustable
After resistance R12, the drain electrode with field effect transistor MOS is connected, its P pole is connected with the P pole of diode D3.
One end of inductance L2 is connected with the positive pole of polar capacitor C6, the N of its other end and Zener diode D5
Pole is connected.
Meanwhile, the N pole of diode D4 source electrode with field effect transistor MOS after resistance R10 be connected, its
P pole is connected with the base stage of audion VT3.The negative pole of polar capacitor C7 and the colelctor electrode of audion VT3
Be connected, its positive pole is connected with the grid of field effect transistor MOS.The positive pole of polar capacitor C8 is sequentially through electricity
Resistance R9 is connected with FB pin with control chip U2 after inductance L1, its negative pole after resistance R11 with can
The adjustable end adjusting resistance R12 is connected.
The N pole of described Zener diode D5 is connected with the negative pole of polar capacitor C6；Described field effect transistor
The grid of MOS is connected with VOUT pin and the PWM pin of control chip U2 respectively, its drain electrode with
The negative pole of polar capacitor C9 is connected；Output circuit is nursed one's health as voltage in the N pole of described Zener diode D5
Outfan.
As in figure 2 it is shown, described linear constant current drive circuit is by driving chip U3, audion VT4, resistance
R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance
R20, polar capacitor C9, polar capacitor C10, polar capacitor C11, polar capacitor C12, diode D6,
Zener diode D7, and diode D8 composition.
During connection, the positive pole of polar capacitor C9 IN pin with driving chip U3 after resistance R13 is connected
Connect, its negative pole as the input of linear constant current drive circuit and is connected with voltage conditioning output circuit.Two
The P pole of pole pipe D6 BOOST pin with driving chip U3 after resistance R14 is connected, its N pole warp
After resistance R25, the SW pin with driving chip U3 is connected.The negative pole of polar capacitor C11 is through resistance R16
Be connected with the P pole of diode D6 afterwards, its positive pole is connected with the N pole of the second quarter 6.Zener diode
The P pole of D7 is connected with the positive pole of polar capacitor C11, its N pole is as the output of linear constant current drive circuit
End, this outfan is connected with LED respectively with the outfan of voltage conditioning output circuit.
Meanwhile, one end of resistance R17 be connected with the positive pole of polar capacitor C11, its other end and diode
The N pole of D6 is connected.The positive pole of polar capacitor C12 is managed with the FB of driving chip U3 after resistance R18
Foot is connected, its negative pole is connected with the base stage of audion VT4.The positive pole of polar capacitor C10 and driving core
The FB pin of sheet U3 is connected, its minus earth.The N pole of diode D8 after resistance R19 with polarity
The negative pole of electric capacity C10 is connected, its P pole emitter stage with audion VT4 after resistance R20 is connected.
The N pole ground connection of described diode D6；The EN pin of described driving chip U3 and polar capacitor C9
Positive pole be connected, its GND pin ground connection；The grounded collector of described audion VT4, its emitter stage
It is connected with the N pole of Zener diode D7.
During operation, the pulse of input voltage and electric current can be dynamically adjusted by the present invention, and the present invention is also
The intensity of output voltage and electric current can be adjusted, ensure that the voltage and current that the present invention exports
Stability, effectively ensure that the stability of light-operated LED (liquid crystal diode) lamp brightness, and improves the use longevity of LED
Life.
Meanwhile, the present invention can export stable driving voltage and electric current, makes output voltage and electric current and benchmark electricity
Press consistent with electric current, ensure that the present invention exports stable voltage and current.The control chip U of the present invention
Use the integrated chip of L296 to realize, and this chip combines with external circuit and effectively raises the present invention
Output voltage and the stability of electric current and reliability.For the practical effect of the present invention, described driving
Chip U3 the most preferentially have employed the integrated chip of LM2734X of stable performance and realizes.
According to above-described embodiment, can well realize the present invention.
Claims (6)
1. a light-operated LED Switching Power Supply based on linear constant current drive circuit, it is characterised in that main
Positive pole by control chip U2, transformator T, diode rectifier U1, positive pole and diode rectifier U1
The polar capacitor C1 that outfan is connected, negative pole is connected with the cathode output end of diode rectifier U1,
Positive pole is connected with the positive pole of polar capacitor C1, negative pole after resistance R1 with the negative pole phase of polar capacitor C1
Polar capacitor C2, the N pole connected is connected with the VIN pin of control chip U2, P pole is whole with diode
The Zener diode D1 that the cathode output end of stream device U1 is connected, the pulse being connected with control chip U2 is adjusted
Whole circuit, the voltage being connected with control chip U2 and diode rectifier U1 respectively conditioning output circuit,
And the linear constant current drive circuit composition that output circuit is connected is nursed one's health with voltage；Described phase adjusting circuit
It is connected with voltage conditioning output circuit；The Same Name of Ends of described transformator T secondary inductance coil is whole with diode
One of them input of stream device U1 is connected, its non-same polarity and diode rectifier U1 another is defeated
Enter end to be connected；The GND pin ground connection of control chip U2.
A kind of light-operated LED based on linear constant current drive circuit the most according to claim 1 switch electricity
Source, it is characterised in that described linear constant current drive circuit is by driving chip U3, audion VT4, positive pole warp
After resistance R13 the IN pin with driving chip U3 be connected, negative pole defeated as linear constant current drive circuit
Enter end and with polar capacitor C9, the P pole that is connected of voltage conditioning output circuit after resistance R14 with drive core
The BOOST pin of sheet U3 is connected, N pole after resistance R25 with the SW pin phase of driving chip U3
The diode D6 connected, negative pole P pole with diode D6 after resistance R16 is connected, positive pole and two seasons
Polar capacitor C11, the P pole that the N pole of degree 6 is connected is connected with the positive pole of polar capacitor C11, N pole
Positive pole as the Zener diode D7 of the outfan of linear constant current drive circuit, one end and polar capacitor C11
Be connected, resistance R17 that the other end is connected with the N pole of diode D6, positive pole after resistance R18 with
The polar capacitor that the FB pin of driving chip U3 is connected, negative pole is connected with the base stage of audion VT4
C12, positive pole is connected with the FB pin of driving chip U3, the polar capacitor C10 of minus earth, and N
Pole negative pole with polar capacitor C10 after resistance R19 is connected, P pole after resistance R20 with audion VT4
Emitter stage be connected diode D8 composition；The N pole ground connection of described diode D6；Described driving chip
The EN pin of U3 is connected with the positive pole of polar capacitor C9, its GND pin ground connection；Described audion
The grounded collector of VT4, its emitter stage are connected with the N pole of Zener diode D7.
A kind of light-operated LED based on linear constant current drive circuit the most according to claim 2 switch electricity
Source, it is characterised in that described phase adjusting circuit is by audion VT1, and audion VT2, positive pole is through resistance
After R1, the SS pin with control chip U2 is connected, negative pole is connected with the emitter stage of audion VT1
Polar capacitor C3, P pole is connected with the SIN pin of control chip U2, the collection of N pole and audion VT1
The diode D2 that electrode is connected, positive pole COC pin with control chip U2 after resistance R4 is connected,
The polar capacitor C4 that negative pole emitter stage with audion VT1 after resistance R3 is connected, negative pole with control core
The pole that the FC pin of sheet U2 is connected, positive pole colelctor electrode with audion VT2 after resistance R5 is connected
Property electric capacity C5, and N pole CR pin with control chip U2 after resistance R7 is connected, P pole is through electricity
The diode D3 composition being connected with the emitter stage of audion VT2 after resistance R6；The N of described diode D3
Pole is connected with the SHDN pin of control chip U2, its P pole as phase adjusting circuit outfan also
It is connected with voltage conditioning output circuit；The base stage of described audion VT2 is connected with the base stage of audion VT1
Connect, its emitter stage be connected with the negative pole of polar capacitor C4 after ground connection；The positive pole of described polar capacitor C4 with
The base stage of audion VT1 is connected.
A kind of light-operated LED based on linear constant current drive circuit the most according to claim 3 switch electricity
Source, it is characterised in that described voltage conditioning output circuit is by field effect transistor MOS, audion VT3, positive pole
Be connected with the emitter stage of audion VT3 after resistance R8, negative pole defeated with the negative pole of diode rectifier U1
Go out polar capacitor C6, the N pole that is connected of end after adjustable resistance R12 with the drain electrode phase of field effect transistor MOS
The Zener diode D5 that connection, P pole are connected with the P pole of diode D3, one end is with polar capacitor C6's
Inductance L2, the N pole that positive pole is connected, the other end is connected with the N pole of Zener diode D5 is through resistance R10
Be connected with the source electrode of field effect transistor MOS afterwards, diode that P pole is connected with the base stage of audion VT3
D4, negative pole is connected with the colelctor electrode of audion VT3, positive pole is connected with the grid of field effect transistor MOS
Polar capacitor C7, and positive pole sequentially manages with the FB of control chip U2 after resistance R9 and inductance L1
The polar capacitor C8 that foot is connected, negative pole is connected with the adjustable end of adjustable resistance R12 after resistance R11
Composition；The N pole of described Zener diode D5 is connected with the negative pole of polar capacitor C6；Described field effect transistor
The grid of MOS is connected with VOUT pin and the PWM pin of control chip U2 respectively, its drain electrode with
The negative pole of polar capacitor C9 is connected；Output circuit is nursed one's health as voltage in the N pole of described Zener diode D5
Outfan.
A kind of light-operated LED based on linear constant current drive circuit the most according to claim 4 switch electricity
Source, it is characterised in that described control chip U2 is the integrated chip of L296.
A kind of light-operated LED based on linear constant current drive circuit the most according to claim 4 switch electricity
Source, it is characterised in that described driving chip U3 is the integrated chip of LM2734X.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517020.5A CN106028537A (en) | 2016-07-04 | 2016-07-04 | Linear constant-current driving circuit-based light-controlled LED switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517020.5A CN106028537A (en) | 2016-07-04 | 2016-07-04 | Linear constant-current driving circuit-based light-controlled LED switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106028537A true CN106028537A (en) | 2016-10-12 |
Family
ID=57106204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610517020.5A Pending CN106028537A (en) | 2016-07-04 | 2016-07-04 | Linear constant-current driving circuit-based light-controlled LED switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106028537A (en) |
-
2016
- 2016-07-04 CN CN201610517020.5A patent/CN106028537A/en active Pending
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Application publication date: 20161012 |