CN106061010A - White-light LED (Light-Emitting Diode) noise reduction driving system based on transistor stabilized power supply circuit - Google Patents
White-light LED (Light-Emitting Diode) noise reduction driving system based on transistor stabilized power supply circuit Download PDFInfo
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- CN106061010A CN106061010A CN201610381816.2A CN201610381816A CN106061010A CN 106061010 A CN106061010 A CN 106061010A CN 201610381816 A CN201610381816 A CN 201610381816A CN 106061010 A CN106061010 A CN 106061010A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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Abstract
The invention discloses a white-light LED (Light-Emitting Diode) noise reduction driving system based on a transistor stabilized power supply circuit. The white-light LED noise reduction driving system is characterized by mainly consisting of a driving chip U, the transistor stabilized power supply circuit, a capacitor C1, a filter circuit, a capacitor C5 and a capacitor C3, wherein a negative electrode of the capacitor C1 is grounded; a positive electrode of the capacitor C1 is connected with a TRIG pin of the driving chip U after passing through a resistor R1 and a resistor R2 in sequence; the filter circuit is connected in series between the positive electrode of the capacitor C1 and the driving chip U; a positive electrode of the capacitor C5 is connected with the filter circuit after passing through a resistor R6; a negative electrode of the capacitor C5 is grounded; a positive electrode of the capacitor C3 is connected with a CONT pin of the driving chip U; and a negative electrode of the capacitor C3 is connected with the negative electrode of the capacitor C5 after passing through a resistor R7. Through adoption of the white-light LED noise reduction driving system, input mains supply can be processed, so that output current is more stable, and the lighting effect of an LED is improved.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of white light LEDs noise reduction based on transistor stabilized current supply circuit and drive
Dynamic 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 has had become as people
One of the main product of life lighting.Along with quality of life requirement is improved constantly by the universal of LED and people, this gives LED
Drive system brings new challenge.But, traditional LED drive system easily produces high-frequency self-excitation, the most easily produces
The biggest raw current noise, has a strong impact on the orthobiosis of people.
Summary of the invention
It is an object of the invention to overcome traditional LED drive system easily to produce high-frequency self-excitation, the most easily produce
The defect of the biggest raw current noise, it is provided that a kind of white light LEDs noise reduction drive system based on transistor stabilized current supply circuit.
The purpose of the present invention is achieved through the following technical solutions: a kind of white light LEDs based on transistor stabilized current supply circuit
Noise reduction drive system, mainly by driving chip U, transistor stabilized current supply circuit, minus earth, positive pole are sequentially through resistance R1 and electricity
The electric capacity C1 being connected with the TRIG pin of driving chip U after resistance R2, 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, and positive pole is with driving chip U's
The electric capacity C3 that CONT pin is connected, negative pole negative pole with electric capacity C5 after resistance R7 is connected, and it is serially connected in driving chip U
OUT pin and the positive pole of electric capacity C1 between gate switch trigger circuit composition；The positive pole of described electric capacity C1 also with transistor
Stabilized current supply circuit is connected；The RE pin of described driving chip U is all connected with filter circuit with VCC pin, its DIS pin
All positive pole with electric capacity C5 is connected with THRE pin and OUT pin, its GND pin then negative pole with electric capacity C5 is connected.
Further, described transistor stabilized current supply electricity routing transformer T, diode rectifier U1, diode rectifier
U2, audion VT2, audion VT3, audion VT4, be just serially connected in the emitter stage of audion VT2 and diode rectifier U1
Resistance R12 between the outfan of pole, is serially connected between the colelctor electrode of audion VT2 and the cathode output end of diode rectifier U1
Resistance R13, the resistance R17 being serially connected between the emitter stage of audion VT2 and the colelctor electrode of audion VT4, be serially connected in three poles
Resistance R14 between emitter stage and the base stage of audion VT4 of pipe VT3, positive pole is connected with the base stage of audion VT3, negative pole
Electric capacity C8, the P pole that then base stage with audion VT4 is connected is 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 and diode rectifier
The electric capacity C7 that the cathode output end of U2 is connected, negative pole is connected with the cathode output end of diode rectifier U2, and concatenation
Resistance R16 composition between the P pole and the cathode output end of diode rectifier U1 of Zener diode D4；Described transformator T
The Same Name of Ends of secondary inductance coil L2 be connected with the input of non-same polarity with diode rectifier U1, its secondary inductance line
The Same Name of Ends of circle L3 is connected with the input of diode rectifier U2 with non-same polarity, the inductance coil L1 on its former limit of the same name
End and non-same polarity are then collectively forming the input of this transistor stabilized current supply circuit；The emitter stage of described audion VT4 is with steady
The N pole of pressure diode D4 is connected, its colelctor electrode then base stage with audion VT3 is connected；The base stage of described audion VT2 with
The colelctor electrode of audion VT3 is connected, its emitter stage then as this transistor stabilized current supply circuit outfan and with electric capacity C1
Positive pole be connected.
Described filter circuit is connected by the positive pole of one end with electric capacity C1, the other end after resistance R4 with driving chip U's
Resistance R3, the N pole that RE pin is connected is connected with the positive pole of electric capacity C1, P pole diode D1 of ground connection after electric capacity C2, and
The resistance R5 composition being serially connected between the positive pole of electric capacity C1 and the VCC pin of driving chip U；The N pole also warp of described diode D1
After resistance R6, the positive pole with electric capacity C5 is connected.
Described gate switch triggering circuit is by field effect transistor MOS1, field effect transistor MOS2, and audion VT1, P pole is through resistance R9
Be connected with the drain electrode of field effect transistor MOS1 afterwards, Zener diode D3, P that N pole positive pole with electric capacity C1 after inductance L is connected
The Zener diode D2 that pole ground connection, N pole are connected with the N pole of Zener diode D3 after resistance R8, negative pole and Zener diode
The P pole of the electric capacity C4 that the P pole of D2 is connected, 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 emitter stage and the field effect of audion VT1
Resistance R11 between the source electrode of pipe MOS2, and one end is connected with the source electrode of field effect transistor MOS2, the resistance of other end ground connection
R10 forms；The grid of described field effect transistor MOS2 is connected with the OUT pin of driving chip U, its drain electrode then with audion VT1
Base stage be connected；The described base stage of audion VT1 is connected with the source electrode of field effect transistor MOS1, its colelctor electrode then with voltage stabilizing two
The N pole of pole pipe 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 the phase contrast of electric current,
Reduce the generation of high-frequency self-excitation, improve the noise reduction capability of the present invention, thus reduce the electric current that the present invention operationally produces
Noise.
(2) civil power of input can be processed by the present invention, so that the electric current of present invention output is more stable, improves
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.
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 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, resistance R7, electric capacity C3, electricity
Hold C5, resistance R6, transistor stabilized current supply circuit, filter circuit and gate switch and trigger circuit composition.
During connection, the minus earth of electric capacity C1, its positive pole sequentially after resistance R1 and resistance R2 with the TRIG of driving chip U
Pin is connected.Filter circuit is serially connected between the positive pole of electric capacity C1 and driving chip U.The positive pole of electric capacity C5 after resistance R6 with
Filter circuit is connected, its minus earth.The positive pole of electric capacity C3 is connected with the CONT pin of driving chip U, its negative pole is through electricity
It is connected with the negative pole of electric capacity C5 after resistance R7.Gate switch triggers circuit and is serially connected in the OUT pin of driving chip U and electric capacity C1
Between positive pole.The positive pole of described electric capacity C1 is also connected with transistor stabilized current supply circuit.The RE pin of described driving chip U and
VCC pin is all connected with filter circuit, its DIS pin and THRE pin and OUT pin all positive poles with electric capacity C5 are connected
Connect, 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 implement
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 composition.
During connection, one end of resistance R3 is connected with the positive pole of electric capacity C1, its other end after resistance R4 with driving chip U
RE pin be connected.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；Institute
State the plus earth of electric capacity C2.String resistance R5 is connected between the positive pole of electric capacity C1 and the VCC pin of driving chip U.Described two poles
The N pole of pipe D1 also after resistance R6 positive pole with electric capacity C5 be connected.
It addition, this gate switch triggers circuit by field effect transistor MOS1, field effect transistor MOS2, audion VT1, inductance L, electricity
Resistance R8, resistance R9, resistance R10, resistance R11, electric capacity 4, electric capacity C6, Zener 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 is connected, its N pole is through electricity
It is connected with the positive pole of electric capacity C1 after sense L.The P pole ground connection of Zener diode D2, its N pole after resistance R8 with Zener diode D3
N pole be connected.The negative pole of electric capacity C4 is connected with the P pole of Zener diode D2, the grid of its positive pole and field effect transistor MOS1
It is connected.The positive pole of electric capacity C6 is 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.One end of resistance R10 and field effect
The source electrode of pipe MOS2 is connected, 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 with three poles
The base stage of pipe VT1 is connected.The described base stage of audion VT1 is connected with the source electrode of field effect transistor MOS1, its colelctor electrode then with
The N pole of Zener diode D3 is collectively forming this gate switch and triggers the outfan of circuit, and this gate switch triggers the output of circuit
Termination LED.
As described in Figure 2, this transistor stabilized current supply electricity routing transformer T, diode rectifier U1, diode rectifier
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 form.
During connection, resistance R12 be serially connected in the emitter stage of audion VT2 and diode rectifier U1 cathode output end it
Between.Resistance R13 is serially connected between the colelctor electrode of audion VT2 and the cathode output end of diode rectifier U1.Resistance R17 concatenates
Between the emitter stage and the colelctor electrode of audion VT4 of audion VT2.Resistance R14 is serially connected in the emitter stage and three of audion VT3
Between the base stage of pole pipe VT4.The positive pole of electric capacity C8 is connected with the base stage of audion VT3, its negative pole then with the base of audion VT4
Pole is connected.The P pole of Zener diode D4 is connected with the cathode output end of diode rectifier U2, its N pole is after resistance R15
It is connected with the cathode output end of diode rectifier U2.The cathode output end phase of the positive pole of electric capacity C7 and diode rectifier U2
Connect, its negative pole is connected with the cathode output end of diode rectifier U2.Resistance R16 is serially connected in the P pole of Zener diode D4
And between 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 are with diode rectifier U1's
Input is connected, the Same Name of Ends of its secondary inductance coil L3 is connected with the input of non-same polarity with diode rectifier U2
Connect, 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
And get access to grid.The emitter stage of described audion VT4 is connected with the N pole of Zener diode D4, its colelctor electrode then with audion VT3
Base stage be connected.The base stage of described audion VT2 is connected with the colelctor electrode of audion VT3, its emitter stage is then as this crystalline substance
The outfan of body pipe stabilized current supply circuit is also connected with the positive pole of electric capacity C1.
The present invention uses the integrated chip of NE555 to combine novel peripheral circuit, and it can eliminate the phase contrast of electric current, reduces
The generation of high-frequency self-excitation, improves the noise reduction capability of the present invention, thus reduces the current noise that the present invention operationally produces.
Meanwhile, the civil power of input can be processed by the present invention, so that the electric current of present invention output is more stable, improves LED
Illuminating effect.
As it has been described above, just can well realize the present invention.
Claims (5)
1. a white light LEDs noise reduction drive system based on transistor stabilized current supply circuit, it is characterised in that mainly by driving core
Sheet U, transistor stabilized current supply circuit, minus earth, positive pole are sequentially managed with the TRIG of driving chip U after resistance R1 and resistance R2
The electric capacity C1 that foot is connected, is serially connected in the filter circuit between the positive pole of electric capacity C1 and driving chip U, positive pole after resistance R6 with
Filter circuit is connected, the electric capacity C5 of minus earth, and positive pole is connected with the CONT pin of driving chip U, negative pole is through resistance R7
The electric capacity C3 that negative pole with electric capacity C5 is connected afterwards, and be serially connected between the OUT pin of driving chip U and the positive pole of electric capacity C1
Gate switch trigger circuit composition；The positive pole of described electric capacity C1 is also connected with transistor stabilized current supply circuit；Described driving
The RE pin of chip U is all connected with filter circuit with VCC pin, its DIS pin and THRE pin and OUT pin all with electricity
The positive pole holding C5 is connected, its GND pin then negative pole with electric capacity C5 is connected.
A kind of white light LEDs noise reduction drive system based on transistor stabilized current supply circuit the most according to claim 1, it is special
Levy and be, 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 the emitter stage of audion VT2 and diode rectifier U1 cathode output end it
Between resistance R12, the resistance R13 being serially connected between the colelctor electrode of audion VT2 and the cathode output end of diode rectifier U1,
The resistance R17 being serially connected between the emitter stage of audion VT2 and the colelctor electrode of audion VT4, is serially connected in the transmitting of audion VT3
Resistance R14 between the base stage of pole and audion VT4, positive pole is connected with the base stage of audion VT3, negative pole then with audion
Electric capacity C8, the P pole that the base stage of VT4 is connected is connected with the cathode output end of diode rectifier U2, N pole is after resistance R15
The Zener diode D4 being connected with the cathode output end of diode rectifier U2, positive pole is defeated with the positive pole of diode rectifier U2
Go out the electric capacity C7 that end is connected, negative pole is connected with the cathode output end of diode rectifier U2, and be serially connected in voltage stabilizing two pole
Resistance R16 composition between P pole and the cathode output end of diode rectifier U1 of pipe D4；The secondary inductance of described transformator T
The Same Name of Ends of coil L2 is connected with the input of diode rectifier U1 with non-same polarity, its secondary inductance coil L3 of the same name
End is connected with the input of diode rectifier U2 with non-same polarity, the Same Name of Ends of the inductance coil L1 on its former limit and non-of the same name
End is then collectively forming the input of this transistor stabilized current supply circuit；The emitter stage of described audion VT4 and Zener diode D4
N pole be connected, its colelctor electrode then base stage with audion VT3 is connected；The base stage of described audion VT2 and audion VT3
Colelctor electrode be connected, its emitter stage then as the outfan of this transistor stabilized current supply circuit and is connected with the positive pole of electric capacity C1
Connect.
A kind of white light LEDs noise reduction drive system based on transistor stabilized current supply circuit the most according to claim 2, it is special
Levy and be, described filter circuit is connected by the positive pole of one end with electric capacity C1, the other end after resistance R4 with the RE of driving chip U
Resistance R3, the N pole that pin is connected is connected with the positive pole of electric capacity C1, P pole diode D1 of ground connection after electric capacity C2, and string
The resistance R5 composition being connected between the positive pole of electric capacity C1 and the VCC pin of driving chip U；The N pole of described diode D1 is also through electricity
It is connected with the positive pole of electric capacity C5 after resistance R6.
A kind of white light LEDs noise reduction drive system based on transistor stabilized current supply circuit the most according to claim 3, it is special
Levying and be, described gate switch triggering circuit is by field effect transistor MOS1, field effect transistor MOS2, and audion VT1, P pole is through resistance R9
Be connected with the drain electrode of field effect transistor MOS1 afterwards, Zener diode D3, P that N pole positive pole with electric capacity C1 after inductance L is connected
The Zener diode D2 that pole ground connection, N pole are connected with the N pole of Zener diode D3 after resistance R8, negative pole and Zener diode
The P pole of the electric capacity C4 that the P pole of D2 is connected, 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 emitter stage and the field effect of audion VT1
Resistance R11 between the source electrode of pipe MOS2, and one end is connected with the source electrode of field effect transistor MOS2, the resistance of other end ground connection
R10 forms；The grid of described field effect transistor MOS2 is connected with the OUT pin of driving chip U, its drain electrode then with audion VT1
Base stage be connected；The described base stage of audion VT1 is connected with the source electrode of field effect transistor MOS1, its colelctor electrode then with voltage stabilizing two
The N pole of pole pipe D3 is collectively forming this gate switch and triggers the outfan of circuit.
A kind of white light LEDs noise reduction drive system based on transistor stabilized current supply circuit the most according to claim 4, it is special
Levying and be, described driving chip U is the integrated chip of NE555.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381816.2A CN106061010A (en) | 2016-05-31 | 2016-05-31 | White-light LED (Light-Emitting Diode) noise reduction driving system based on transistor stabilized power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381816.2A CN106061010A (en) | 2016-05-31 | 2016-05-31 | White-light LED (Light-Emitting Diode) noise reduction driving system based on transistor stabilized power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106061010A true CN106061010A (en) | 2016-10-26 |
Family
ID=57172645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610381816.2A Pending CN106061010A (en) | 2016-05-31 | 2016-05-31 | White-light LED (Light-Emitting Diode) noise reduction driving system based on transistor stabilized power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106061010A (en) |
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2016
- 2016-05-31 CN CN201610381816.2A patent/CN106061010A/en active Pending
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Application publication date: 20161026 |
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