CN105916250A - Current-stabilization white light LED noise reduction driving system - Google Patents
Current-stabilization white light LED noise reduction driving system Download PDFInfo
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- CN105916250A CN105916250A CN201610387786.6A CN201610387786A CN105916250A CN 105916250 A CN105916250 A CN 105916250A CN 201610387786 A CN201610387786 A CN 201610387786A CN 105916250 A CN105916250 A CN 105916250A
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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]
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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 current-stabilization white light LED noise reduction driving system. The system is characterized in that the system is mainly composed of a driving chip U, a transistor current-stabilization power supply circuit, a capacitor C1 whose negative electrode is grounded and positive electrode is connected with a TRIG pin of the driving chip U successively through a resistor R1 and a resistor R2, a filter circuit serially connected between the positive electrode of the capacitor C1 and the driving chip U, a capacitor C5 whose positive electrode is connected with the filter circuit through a resistor R6 and negative electrode is grounded, and a capacitor C3 whose positive electrode is connected with a CONT pin of the driving chip U and negative electrode is connected with the negative electrode of the capacitor C5 through a resistor R7. The current-stabilization white light LED noise reduction driving system is capable of processing input commercial power, the current output by the system is more stable, and the illumination effect of an LED is improved.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of stable flow type white light LEDs noise reduction drive system.
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.Along with the universal of LED and people are to quality of life requirement
Improve constantly, this brings new challenge to LED drive system.But, traditional LED drive system
Easily produce high-frequency self-excitation, operationally easily produce the biggest current noise, have a strong impact on the normal of people
Life.
Summary of the invention
It is an object of the invention to overcome traditional LED drive system easily to produce high-frequency self-excitation, operationally
Easily produce the defect of the biggest current noise, it is provided that a kind of stable flow type white light LEDs noise reduction drive system.
The purpose of the present invention is achieved through the following technical solutions: a kind of stable flow type white light LEDs noise reduction drive system,
Main by driving chip U, transistor stabilized current supply circuit, minus earth, positive pole are sequentially through resistance R1 and electricity
The electric capacity C1 that is connected with the TRIG pin of driving chip U after resistance R2, be serially connected in electric capacity C1 positive pole and
Filter circuit between driving chip U, positive pole is connected with filter circuit after resistance R6, minus earth
Electric capacity C5, positive pole is connected with the CONT pin of driving chip U, negative pole after resistance R7 with electric capacity
The electric capacity C3 that the negative pole of C5 is connected, the base bias circuit being connected with the positive pole of electric capacity C1, and string
The gate switch being connected between OUT pin and the base bias circuit of driving chip U triggers circuit composition；Institute
The positive pole stating electric capacity C1 is also connected with transistor stabilized current supply circuit；The RE pin of described driving chip U
All be connected with filter circuit with VCC pin, its DIS pin and THRE pin and OUT pin equal
Be connected with the positive pole of electric capacity C5, its GND pin then negative pole with electric capacity C5 is connected.
Further, described base bias circuit is by amplifier P, audion VT5, audion VT6, three
Pole pipe VT7, negative pole is connected with the negative pole of amplifier P, positive pole is then as the input of this base bias circuit
The electric capacity C9 of end, positive pole is connected with the negative pole of amplifier P, the electric capacity C10 of minus earth, with electric capacity C10
The resistance R18 being in parallel, one end is connected with the positive pole of electric capacity C10, the other end after resistance R20 with three
Resistance R19, the P pole that the colelctor electrode of pole pipe VT5 is connected is connected with the positive pole of amplifier P, N pole then
Diode D5, the N pole being connected with the base stage of audion VT5 is connected with the outfan of amplifier P, P
Diode D6, P pole that pole colelctor electrode with audion VT5 after potentiometer R21 is connected and amplifier P
The diode D7 that outfan is connected, N pole is connected with the base stage of audion VT6, positive pole and audion
The electric capacity that the emitter stage of VT7 is connected, negative pole base stage with audion VT6 after resistance R22 is connected
C11, the resistance R23 being serially connected between the emitter stage of audion VT5 and the base stage of audion VT7, one end
Be connected with the emitter stage of audion VT6, the other end be connected with the negative pole of electric capacity C11 while ground connection
Resistance R24 forms；The base stage of described audion VT5 is connected with the control end of potentiometer R21, it is launched
Pole then colelctor electrode with audion VT7 is connected；The colelctor electrode of described audion VT7 forms this base bias
The outfan of circuit and trigger with gate switch circuit be connected, its base stage then with the colelctor electrode of audion VT6
It is connected；The input of described base bias circuit is connected with the positive pole of electric capacity C1.
Described transistor stabilized current supply electricity routing transformer T, diode rectifier U1, diode rectifier U2,
Audion VT2, audion VT3, audion VT4, be serially connected in emitter stage and the diode of audion VT2
Resistance R12 between the cathode output end of commutator U1, is serially connected in colelctor electrode and two poles of audion VT2
Resistance R13 between the cathode output end of pipe commutator U1, is serially connected in the emitter stage and three of audion VT2
Resistance R17 between the colelctor electrode of pole pipe VT4, is serially connected in emitter stage and the audion VT4 of audion VT3
Base stage between resistance R14, positive pole is connected with the base stage of audion VT3, negative pole then with audion VT4
Electric capacity C8, the P pole that is connected of base stage be connected with the cathode output end of diode rectifier U2, N pole warp
The Zener diode D4 that after resistance R15, cathode output end with diode rectifier U2 is connected, positive pole with
The cathode output end of diode rectifier U2 is connected, the cathode output end of negative pole and diode rectifier U2
The electric capacity C7 being connected, and it is serially connected in P pole and the negative pole of diode rectifier U1 of Zener diode D4
Resistance R16 composition between outfan；The Same Name of Ends of the secondary inductance coil L2 of described transformator T and non-with
Name end is connected with the input of diode rectifier U1, the Same Name of Ends of its secondary inductance coil L3 and non-together
Name end is connected with the input of diode rectifier U2, the Same Name of Ends of the inductance coil L1 on its former limit and non-
Same Name of Ends is then collectively forming the input of this transistor stabilized current supply circuit；The emitter stage of described audion VT4
Be connected with the N pole of Zener diode D4, its colelctor electrode then base stage with audion VT3 is connected；Institute
The colelctor electrode of the base stage and audion VT3 of stating audion VT2 is connected, its emitter stage is then as this transistor
The outfan of stabilized current supply circuit is also connected with the positive pole of electric capacity C1.
Described filter circuit is connected by the positive pole of one end with electric capacity C1, the other end after resistance R4 with driving
Resistance R3, the N pole that the RE pin of chip U is connected is connected with the positive pole of electric capacity C1, P pole is through electric capacity
The diode D1 of ground connection after C2, and it is serially connected in the positive pole of electric capacity C1 and the VCC pin of driving chip U
Between resistance R5 composition；The N pole of described diode D1 also after resistance R6 with the positive pole of electric capacity C5
It is connected.
Described gate switch triggers circuit by field effect transistor MOS1, field effect transistor MOS2, audion VT1,
The drain electrode with field effect transistor MOS1 after resistance R9 of P pole is connected, N pole after inductance L with base bias
Zener diode D3, P pole ground connection that the outfan of circuit is connected, N pole after resistance R8 with voltage stabilizing two pole
The Zener diode D2 that the N pole of pipe D3 is connected, negative pole is connected with the P pole of Zener diode D2,
The P pole of the electric capacity C4 that positive pole is connected with the grid of field effect transistor MOS1, positive pole and Zener diode D3
Be connected, electric capacity C6 that negative pole is connected with the colelctor electrode of audion VT1, be serially connected in audion VT1's
Resistance R11 between emitter stage and the source electrode of field effect transistor MOS2, and one end and field effect transistor MOS2
Source electrode be connected, the resistance R10 of other end ground connection composition；The grid of described field effect transistor MOS2 with drive
The OUT pin of dynamic chip U is connected, its drain electrode then base stage with audion VT1 is connected；Described three
The base stage of pole pipe VT1 is connected with the source electrode of field effect transistor MOS1, its colelctor electrode then with Zener diode
The N pole of D3 is collectively forming this gate switch and triggers the outfan of circuit.
Described driving chip U is the integrated chip of NE555.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) present invention uses the integrated chip of NE555 to combine novel peripheral circuit, and it can eliminate electric current
Phase contrast, reduces the generation of high-frequency self-excitation, improves the noise reduction capability of the present invention, thus reduce the present invention
The current noise operationally produced.
(2) civil power of input can be processed by the present invention, so that the electric current of present invention output is more steady
Fixed, improve the illuminating effect of LED.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the transistor stabilized current supply circuit diagram of the present invention.
Fig. 3 is the structure chart of the base bias circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by driving chip U, electric capacity C1, resistance R1, resistance R2, electricity
Resistance R7, electric capacity C3, electric capacity C5, resistance R6, base bias circuit, transistor stabilized current supply circuit, filter
Wave circuit and gate switch trigger circuit composition.
During connection, the minus earth of electric capacity C1, its positive pole sequentially after resistance R1 and resistance R2 with driving
The TRIG pin of chip U is connected.Filter circuit be serially connected in the positive pole of electric capacity C1 and driving chip U it
Between.The positive pole of electric capacity C5 is connected with filter circuit after resistance R6, its minus earth.Electric capacity C3's
Positive pole is connected with the CONT pin of driving chip U, its negative pole after resistance R7 with the negative pole of electric capacity C5
It is connected.Base bias circuit is connected with the positive pole of electric capacity C1.Gate switch triggering circuit is then serially connected in and drives
Between OUT pin and the base bias circuit of dynamic chip U.The positive pole of described electric capacity C1 is also steady with transistor
Stream power circuit is connected.The RE pin of described driving chip U is all connected with filter circuit with VCC pin
Connect, its DIS pin and THRE pin and OUT pin all positive poles with electric capacity C5 are connected, its GND
Pin then negative pole with electric capacity C5 is connected.The positive pole of described electric capacity C1 connects input power.In order to preferably
Implementing the present invention, the described driving chip U integrated chip of preferred NE555 realizes.
Wherein, described filtered electrical routing resistance R3, resistance R4, resistance R5, diode D1 and electric capacity
C2 forms.
During connection, one end of resistance R3 is connected with the positive pole of electric capacity C1, its other end is after resistance R4
It is connected with the RE pin of driving chip U.The N pole of diode D1 is connected with the positive pole of electric capacity C1,
Its P pole is connected with the negative pole of electric capacity C2；The plus earth of described electric capacity C2.String resistance R5 is connected on electricity
Hold between positive pole and the VCC pin of driving chip U of C1.The N pole of described diode D1 is also through resistance
After R6, the positive pole with electric capacity C5 is connected.
It addition, this gate switch triggers circuit by field effect transistor MOS1, field effect transistor MOS2, audion
VT1, inductance L, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity 4, electric capacity C6, surely
Pressure diode D2 and Zener diode D3 composition.
Wherein, the drain electrode with field effect transistor MOS1 after resistance R9 of the P pole of Zener diode D3 be connected,
Its N pole outfan with base bias circuit after inductance L is connected.The P pole of Zener diode D2 connects
Ground, its N pole N pole with Zener diode D3 after resistance R8 is connected.The negative pole of electric capacity C4 is with steady
The P pole of pressure diode D2 is connected, its positive pole is connected with the grid of field effect transistor MOS1.Electric capacity C6
Positive pole be connected with the P pole of Zener diode D3, its negative pole is connected with the colelctor electrode of audion VT1.
Resistance R11 is serially connected between emitter stage and the source electrode of field effect transistor MOS2 of audion VT1.Resistance R10
One end be connected with the source electrode of field effect transistor MOS2, its other end ground connection.
Meanwhile, the grid of described field effect transistor MOS2 be connected with the OUT pin of driving chip U, its
Drain electrode then base stage with audion VT1 is connected.The base stage of described audion VT1 and field effect transistor MOS1
Source electrode be connected, its colelctor electrode then N pole with Zener diode D3 is collectively forming this gate switch and triggers
The outfan of circuit, this gate switch triggers the output termination LED of circuit.
As described in Figure 2, this transistor stabilized current supply electricity routing transformer T, diode rectifier U1, two poles
Pipe commutator U2, audion VT2, audion VT3, audion VT4, resistance R12, resistance R13,
Resistance R14, resistance R15, resistance R16, resistance R17, Zener diode D4, electric capacity C7 and electric capacity
C8 forms.
During connection, resistance R12 is serially connected in emitter stage and the positive pole of diode rectifier U1 of audion VT2
Between outfan.Resistance R13 is serially connected in colelctor electrode and the positive pole of diode rectifier U1 of audion VT2
Between outfan.Resistance R17 is serially connected between the emitter stage of audion VT2 and the colelctor electrode of audion VT4.
Resistance R14 is serially connected between the emitter stage of audion VT3 and the base stage of audion VT4.Electric capacity C8 is just
Pole is connected with the base stage of audion VT3, its negative pole then base stage with audion VT4 is connected.Voltage stabilizing two
The P pole of pole pipe D4 is connected with the cathode output end of diode rectifier U2, its N pole is through resistance R15
Cathode output end with diode rectifier U2 is connected afterwards.The positive pole of electric capacity C7 and diode rectifier U2
Cathode output end be connected, its negative pole is connected with the cathode output end of diode rectifier U2.Resistance
R16 is serially connected between the P pole of Zener diode D4 and the cathode output end of diode rectifier U1.
Meanwhile, the Same Name of Ends of the secondary inductance coil L2 of described transformator T and non-same polarity and diode rectification
The input of device U1 is connected, the Same Name of Ends of its secondary inductance coil L3 and non-same polarity and diode rectification
The input of device U2 is connected, the Same Name of Ends of the inductance coil L1 on its former limit and non-same polarity are then collectively forming
The input of this transistor stabilized current supply circuit also gets access to grid.The emitter stage of described audion VT4 and voltage stabilizing two
The N pole of pole pipe D4 is connected, its colelctor electrode then base stage with audion VT3 is connected.Described audion
The base stage of VT2 is connected with the colelctor electrode of audion VT3, its emitter stage is then as this transistor stabilized current supply
The outfan of circuit is also connected with the positive pole of electric capacity C1.
As it is shown on figure 3, this base bias circuit is by amplifier P, audion VT5, audion VT6, three
Pole pipe VT7, resistance R18, resistance R19, resistance R20, potentiometer R21, resistance R22, resistance R23,
Resistance R24, electric capacity C9, electric capacity C10, electric capacity C11, diode D5, diode D6 and diode
D7 forms.
During connection, the negative pole of electric capacity C9 is connected with the negative pole of amplifier P, its positive pole is then inclined as this base stage
The input of circuits is also connected with the positive pole of electric capacity C1.The positive pole of electric capacity C10 and the negative pole of amplifier P
Be connected, its minus earth.Resistance R18 is in parallel with electric capacity C10.One end of resistance R19 and electric capacity
The positive pole of C10 is connected, its other end colelctor electrode with audion VT5 after resistance R20 is connected.Two
The P pole of pole pipe D5 is connected with the positive pole of amplifier P, its N pole then base stage with audion VT5 is connected
Connect.The N pole of diode D6 is connected with the outfan of amplifier P, its P pole after potentiometer R21 with
The colelctor electrode of audion VT5 is connected.The P pole of diode D7 is connected with the outfan of amplifier P,
Its N pole is connected with the base stage of audion VT6.The positive pole of electric capacity C11 and the emitter stage of audion VT7
Be connected, its negative pole base stage with audion VT6 after resistance R22 is connected.Resistance R23 is serially connected in three
Between emitter stage and the base stage of audion VT7 of pole pipe VT5.One end of resistance R24 and audion VT6
Emitter stage be connected, its other end be connected with the negative pole of electric capacity C11 while ground connection.
Meanwhile, the base stage of described audion VT5 be connected with the control end of potentiometer R21, its emitter stage then
It is connected with the colelctor electrode of audion VT7.The colelctor electrode of described audion VT7 forms this base bias circuit
Outfan and after inductance L N pole with Zener diode D3 be connected, its base stage then with audion VT6
Colelctor electrode be connected.
The present invention uses the integrated chip of NE555 to combine novel peripheral circuit, and it can eliminate the phase place of electric current
Difference, reduces the generation of high-frequency self-excitation, improves the noise reduction capability of the present invention, thus reduce the present invention in work
The current noise produced when making.Meanwhile, the civil power of input can be processed by the present invention, so that this
The electric current of bright output is more stable, improves the illuminating effect of LED.
As it has been described above, just can well realize the present invention.
Claims (6)
1. a stable flow type white light LEDs noise reduction drive system, it is characterised in that main by driving chip U,
Transistor stabilized current supply circuit, minus earth, positive pole sequentially after resistance R1 and resistance R2 with driving chip
The electric capacity C1 that the TRIG pin of U is connected, is serially connected between the positive pole of electric capacity C1 and driving chip U
Filter circuit, positive pole is connected with filter circuit after resistance R6, the electric capacity C5 of minus earth, positive pole with
The CONT pin of driving chip U is connected, negative pole negative pole with electric capacity C5 after resistance R7 is connected
Electric capacity C3, the base bias circuit being connected with the positive pole of electric capacity C1, and it is serially connected in driving chip U's
Gate switch between OUT pin and base bias circuit triggers circuit composition；The positive pole of described electric capacity C1
Also it is connected with transistor stabilized current supply circuit；The RE pin of described driving chip U and VCC pin all with
Filter circuit is connected, its DIS pin and THRE pin and OUT pin all with the positive pole of electric capacity C5
Be connected, its GND pin then negative pole with electric capacity C5 is connected.
A kind of stable flow type white light LEDs noise reduction drive system the most according to claim 1, its feature exists
In, described base bias circuit by amplifier P, audion VT5, audion VT6, audion VT7,
Negative pole is connected with the negative pole of amplifier P, positive pole then as the electric capacity C9 of input of this base bias circuit,
Positive pole is connected with the negative pole of amplifier P, the electric capacity C10 of minus earth, the electricity being in parallel with electric capacity C10
Resistance R18, one end is connected with the positive pole of electric capacity C10, the other end after resistance R20 with audion VT5's
Resistance R19, the P pole that colelctor electrode is connected is connected with the positive pole of amplifier P, N pole then with audion VT5
Diode D5, the N pole that is connected of base stage be connected with the outfan of amplifier P, P pole is through potentiometer R21
Diode D6, the P pole that colelctor electrode with audion VT5 is connected afterwards is connected with the outfan of amplifier P,
The diode D7 that N pole is connected with the base stage of audion VT6, the emitter stage phase of positive pole and audion VT7
Connect, electric capacity C11 that negative pole base stage with audion VT6 after resistance R22 is connected, be serially connected in three poles
Resistance R23 between emitter stage and the base stage of audion VT7 of pipe VT5, one end is sent out with audion VT6's
The resistance R24 composition of ground connection while emitter-base bandgap grading is connected, the other end is connected with the negative pole of electric capacity C11；Institute
The control end of the base stage and potentiometer R21 of stating audion VT5 is connected, its emitter stage then with audion VT7
Colelctor electrode be connected；The colelctor electrode of described audion VT7 formed this base bias circuit outfan and with
Gate switch triggers that circuit is connected, its base stage then colelctor electrode with audion VT6 is connected；Described base stage
The input of biasing circuit is connected with the positive pole of electric capacity C1.
A kind of stable flow type white light LEDs noise reduction drive system the most according to claim 2, its feature exists
In, described transistor stabilized current supply electricity routing transformer T, diode rectifier U1, diode rectifier U2,
Audion VT2, audion VT3, audion VT4, be serially connected in emitter stage and the diode of audion VT2
Resistance R12 between the cathode output end of commutator U1, is serially connected in colelctor electrode and two poles of audion VT2
Resistance R13 between the cathode output end of pipe commutator U1, is serially connected in the emitter stage and three of audion VT2
Resistance R17 between the colelctor electrode of pole pipe VT4, is serially connected in emitter stage and the audion VT4 of audion VT3
Base stage between resistance R14, positive pole is connected with the base stage of audion VT3, negative pole then with audion VT4
Electric capacity C8, the P pole that is connected of base stage be connected with the cathode output end of diode rectifier U2, N pole warp
The Zener diode D4 that after resistance R15, cathode output end with diode rectifier U2 is connected, positive pole with
The cathode output end of diode rectifier U2 is connected, the cathode output end of negative pole and diode rectifier U2
The electric capacity C7 being connected, and it is serially connected in P pole and the negative pole of diode rectifier U1 of Zener diode D4
Resistance R16 composition between outfan；The Same Name of Ends of the secondary inductance coil L2 of described transformator T and non-with
Name end is connected with the input of diode rectifier U1, the Same Name of Ends of its secondary inductance coil L3 and non-together
Name end is connected with the input of diode rectifier U2, the Same Name of Ends of the inductance coil L1 on its former limit and non-
Same Name of Ends is then collectively forming the input of this transistor stabilized current supply circuit；The emitter stage of described audion VT4
Be connected with the N pole of Zener diode D4, its colelctor electrode then base stage with audion VT3 is connected；Institute
The colelctor electrode of the base stage and audion VT3 of stating audion VT2 is connected, its emitter stage is then as this transistor
The outfan of stabilized current supply circuit is also connected with the positive pole of electric capacity C1.
A kind of stable flow type white light LEDs noise reduction drive system the most according to claim 3, its feature exists
In, described filter circuit is connected by the positive pole of one end with electric capacity C1, the other end after resistance R4 with driving
Resistance R3, the N pole that the RE pin of chip U is connected is connected with the positive pole of electric capacity C1, P pole is through electric capacity
The diode D1 of ground connection after C2, and it is serially connected in the positive pole of electric capacity C1 and the VCC pin of driving chip U
Between resistance R5 composition；The N pole of described diode D1 also after resistance R6 with the positive pole of electric capacity C5
It is connected.
A kind of stable flow type white light LEDs noise reduction drive system the most according to claim 4, its feature exists
Circuit is triggered by field effect transistor MOS1 in, described gate switch, field effect transistor MOS2, audion VT1,
The drain electrode with field effect transistor MOS1 after resistance R9 of P pole is connected, N pole after inductance L with base bias
Zener diode D3, P pole ground connection that the outfan of circuit is connected, N pole after resistance R8 with voltage stabilizing two pole
The Zener diode D2 that the N pole of pipe D3 is connected, negative pole is connected with the P pole of Zener diode D2,
The P pole of the electric capacity C4 that positive pole is connected with the grid of field effect transistor MOS1, positive pole and Zener diode D3
Be connected, electric capacity C6 that negative pole is connected with the colelctor electrode of audion VT1, be serially connected in audion VT1's
Resistance R11 between emitter stage and the source electrode of field effect transistor MOS2, and one end and field effect transistor MOS2
Source electrode be connected, the resistance R10 of other end ground connection composition；The grid of described field effect transistor MOS2 with drive
The OUT pin of dynamic chip U is connected, its drain electrode then base stage with audion VT1 is connected；Described three
The base stage of pole pipe VT1 is connected with the source electrode of field effect transistor MOS1, its colelctor electrode then with Zener diode
The N pole of D3 is collectively forming this gate switch and triggers the outfan of circuit.
A kind of stable flow type white light LEDs noise reduction drive system the most according to claim 5, its feature exists
In, described driving chip U is the integrated chip of NE555.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387786.6A CN105916250A (en) | 2016-05-31 | 2016-05-31 | Current-stabilization white light LED noise reduction driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387786.6A CN105916250A (en) | 2016-05-31 | 2016-05-31 | Current-stabilization white light LED noise reduction driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105916250A true CN105916250A (en) | 2016-08-31 |
Family
ID=56743086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610387786.6A Pending CN105916250A (en) | 2016-05-31 | 2016-05-31 | Current-stabilization white light LED noise reduction driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105916250A (en) |
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2016
- 2016-05-31 CN CN201610387786.6A patent/CN105916250A/en active Pending
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Application publication date: 20160831 |