CN106102211A - Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction drives power supply - Google Patents
Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction drives power supply Download PDFInfo
- Publication number
- CN106102211A CN106102211A CN201610395723.5A CN201610395723A CN106102211A CN 106102211 A CN106102211 A CN 106102211A CN 201610395723 A CN201610395723 A CN 201610395723A CN 106102211 A CN106102211 A CN 106102211A
- Authority
- CN
- China
- Prior art keywords
- pole
- resistance
- audion
- polar capacitor
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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]
Landscapes
- Amplifiers (AREA)
Abstract
The invention discloses a kind of inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction and drive power supply, it is characterized in that, main by control chip U2, diode rectifier U1, operational amplification circuit, transformator T, audion VT1, diode D1, one-level reverse excitation circuit, it is serially connected in the compositions such as the circuit of power factor correction between the cathode output end of diode rectifier U1 and the emitter stage of audion VT1, and the constant-current drive circuit being connected respectively with transformator T and one-level reverse excitation circuit.It is constant that the present invention can control current peak, controls duty cycle of switching simultaneously, keeps exporting whole switch periods time scale constant, thus present invention achieves the constant of output electric current.And the present invention only needs the starting current of 0.5 μ A, i.e. reducing the power consumption of startup, make the efficiency of the present invention more than 80%, no-load power consumption is less than 30mW, thus improves the efficiency of the present invention.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of inverse-excitation type LED switch based on circuit of power factor correction
Voltage stabilizing drives power supply.
Background technology
Under the background that global energy shortage, environmental requirement improve constantly, countries in the world are all greatly developed green energy conservation and are shone
Bright.LED illumination, as a kind of revolutionary energy-saving illumination technology, develops rapidly, and people drive power supply to LED switch simultaneously
Requirement also improving constantly.But, existing LED switch drives power circuit to have that efficiency is low, power factor is low, electric current control
The defect that precision processed is the highest and reliability is low, thus existing LED switch drive power circuit cannot meet wanting of people
Ask.
Therefore it provides one can improve efficiency, power factor, can ensure that again the LED switch voltage stabilizing of current control accuracy
Driving power supply is the task of top priority.
Summary of the invention
It is an object of the invention to overcome LED switch of the prior art to drive power circuit to exist efficiency is low, power because of
Number is low, and the defect that current control accuracy is the highest, it is provided that a kind of based on circuit of power factor correction inverse-excitation type LED switch
Voltage stabilizing drives power supply.
The present invention is achieved through the following technical solutions: inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction
Drive power supply, mainly by control chip U2, diode rectifier U1, transformator T, audion VT1, positive pole and diode rectifier
The polar capacitor C1 that the cathode output end of U1 is connected, negative pole is connected with the cathode output end of diode rectifier U1, one end
Be connected with the base stage of audion VT1, resistance R1 that the other end is connected with the negative pole of polar capacitor C1, positive pole is after resistance R2
Be connected with the cathode output end of diode rectifier U1, negative pole is connected with the S pin of control chip U2 after resistance R3
Polar capacitor C2, N pole colelctor electrode with audion VT1 after critesistor RT is connected, P pole after resistance R4 with control chip
The diode D1 that the D pin of U2 is connected, is serially connected in the cathode output end of diode rectifier U1 and the emitter stage of audion VT1
Between circuit of power factor correction, the one-level reverse excitation circuit being connected with C pin and the S pin of control chip U2 respectively,
It is serially connected in the operational amplification circuit between non-same polarity and the one-level reverse excitation circuit of transformator T former limit inductance coil L2, and
The constant-current drive circuit composition being connected with transformator T and one-level reverse excitation circuit respectively；Described transformator T former limit inductance coil
The Same Name of Ends of L1 is connected with the colelctor electrode of audion VT1, the non-same polarity of its inductance coil L1 is extremely connected with the P of diode D1
Connect；The Same Name of Ends ground connection of described transformator T former limit inductance coil L2；Described transformator T secondary inductance coil L3 and constant-current driving
Circuit is connected.
Described circuit of power factor correction is imitated with field after resistance R31 by field effect transistor MOS1, field effect transistor MOS2, N pole
Should the source electrode of pipe MOS2 be connected, P pole is sequentially connected with the source electrode of field effect transistor MOS1 after inductance L5 through resistance R30 two
Pole pipe D10, N pole with diode D11 after resistance R29, P pole is connected, N pole is connected with the junction point of resistance R30 with inductance L5
The diode D10 connect, positive pole P pole with diode D11 after resistance R32 is connected, negative pole after resistance R34 with field effect transistor
The polar capacitor C16 that the drain electrode of MOS2 is connected, negative pole positive pole with polar capacitor C16 after resistance R33 is connected, positive pole with
The polar capacitor C15 that the N pole of diode D11 is connected, positive pole is connected with the drain electrode of field effect transistor MOS1, the pole of minus earth
Property electric capacity C13, one end is connected with the negative pole of polar capacitor C13, the other end is connected with the drain electrode of field effect transistor MOS2 can
Adjusting resistance R28, N pole is connected with the negative pole of polar capacitor C13, P pole source electrode with field effect transistor MOS1 after resistance R26 is connected
The diode D9 connect, and positive pole P pole with diode D9 after resistance R27 is connected, the grid of negative pole and field effect transistor MOS2
The polar capacitor C14 composition that pole is connected；The grounded drain of described field effect transistor MOS2；The grid of field effect transistor MOS1 and two poles
The cathode output end of pipe commutator U1 is connected；The positive pole of described polar capacitor C16 is connected with the emitter stage of audion VT1.
Described operational amplification circuit by amplifier P, audion VT3, audion VT4, positive pole after resistance R16 with amplifier
The electrode input end of P is connected, negative pole is as the input of operational amplification circuit the pole that is connected with one-level reverse excitation circuit
Property electric capacity C9, P pole positive pole with polar capacitor C9 after resistance R17 is connected, N pole after resistance R19 with the negative pole of amplifier P
The diode D6 that input is connected, negative pole is connected with the base stage of audion VT3, positive pole after resistance R18 with amplifier P's
The polar capacitor C11 that negative input is connected, positive pole is connected with the N pole of diode D6, negative pole after resistance R20 with three poles
The polar capacitor C12 that the base stage of pipe VT4 is connected, positive pole is connected with the outfan of amplifier P, negative pole after resistance R24 with
Polar capacitor C10, the N pole that the colelctor electrode of audion VT3 is connected negative pole with polar capacitor C10 after resistance R23 is connected,
The Zener diode D7 that P pole anelectrode with amplifier P after resistance R21 is connected, one end is connected with the outfan of amplifier P
Connect, resistance R22 that the other end is connected with the emitter stage of audion VT3, and P pole after resistance R25 with the collection of audion VT3
Electrode is connected, the diode D8 of N pole ground connection composition；The grounded collector of described audion VT4, its emitter stage and audion
The colelctor electrode of VT3 is connected；The negative electrode ground connection of described amplifier P；The N pole of described diode D8 and the current collection of audion VT3
Pole is connected；The negative pole of described polar capacitor C10 is as the outfan of operational amplification circuit limit former with transformator T inductance coil
The non-same polarity of L2 is connected.
Described one-level reverse excitation circuit is connected with the negative pole of polar capacitor C10 by photoelectrical coupler IC, P pole, N pole is through electricity
The diode D2 that is connected with first outfan of photoelectrical coupler IC after resistance R11, negative pole is connected with the N pole of diode D2,
The C pin phase of polar capacitor C4, the N pole that positive pole is connected with the C pin of control chip U2 after resistance R8 and control chip U2
The diode D3 that connection, P pole are connected with second outfan of photoelectrical coupler IC after adjustable resistance R10, one end and two poles
The resistance R9 that the N pole of pipe D3 is connected, the other end is connected with the S pin of control chip U2, minus earth, positive pole and control core
The polar capacitor C3 that the S pin of sheet U2 is connected, and positive pole is connected with the first input end of photoelectrical coupler IC, negative pole connects
The polar capacitor C5 composition on ground；Second input end grounding of described photoelectrical coupler IC；The first of described photoelectrical coupler IC is defeated
Enter end as the input of one-level reverse excitation circuit and to be connected with constant-current drive circuit.
Described constant-current drive circuit is connected with the non-same polarity of transformator T secondary inductance coil L3 by audion VT2, positive pole
Connect, polar capacitor C7, N pole that negative pole emitter stage with audion VT2 after resistance R6 is connected after resistance R5 with audion
The emitter stage of VT2 is connected, P pole Same Name of Ends with transformator T secondary inductance coil L3 after polar capacitor C6 is connected two
Pole pipe D4, one end is connected with the base stage of audion VT2, the other end is connected with the tap of transformator T secondary inductance coil L3
Resistance R7, N pole emitter stage with audion VT2 after inductance L4 be connected, N pole sequentially after resistance R13 and resistance R12 with
The Zener diode D5 that the first input end of photoelectrical coupler IC is connected, positive pole is connected with the N pole of Zener diode D5, bears
The polar capacitor C8 that pole colelctor electrode with audion VT2 after resistance R14 is connected, and the transmitting of one end and audion VT2
The resistance R15 composition that pole is connected, the other end is connected with the colelctor electrode of audion VT2；The colelctor electrode of described audion VT2 connects
Ground；The negative pole of described polar capacitor C11 is connected with the Same Name of Ends of transformator T secondary inductance coil L3；Described polar capacitor C8
Negative pole and positive pole be collectively forming the outfan of constant-current drive circuit.
For the practical effect of the present invention, it is real that described control chip U2 the most preferentially uses the integrated chip of TOP224Y
Existing.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) to control current peak constant for the present invention, controls duty cycle of switching simultaneously, when keeping exporting whole switch periods
Between proportions constant, thus present invention achieves output electric current constant.
(2) power factor can be adjusted by the present invention, makes power factor PF > 0.9, thus the present invention effectively raises
Power factor.
(3) present invention only needs the starting current of 0.5 μ A, i.e. reduces the power consumption of startup, makes the efficiency of the present invention be more than
80%, no-load power consumption is less than 30mW, thus improves the efficiency of the present invention.
(4) control chip of the present invention have employed the integrated chip of TOP224Y and realizes, this TOP224Y integrated chip constant current
Precision is high, and output current error < 2%, thus improve the precision that electric current is controlled by the present invention.
(5) drive efficiency of the present invention is high, and full load efficiency the most of the present invention is up to more than 90%.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of operational amplification circuit of the present invention.
Fig. 3 is the electrical block diagram of the circuit of power factor correction 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 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 control chip U2, diode rectifier U1, transformator T, audion VT1, electricity
Resistance R1, resistance R2, resistance R3, resistance R4, critesistor RT, polar capacitor C1, polar capacitor C2, diode D1, power factor
Correcting circuit, operational amplification circuit, one-level reverse excitation circuit, and constant-current drive circuit composition.
During enforcement, the positive pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, its negative pole and two
The cathode output end of pole pipe commutator U1 is connected.One end of resistance R1 is connected with the base stage of audion VT1, its other end with
The negative pole of polar capacitor C1 is connected.The positive pole of polar capacitor C2 after resistance R2 with the cathode output end of diode rectifier U1
Be connected, its negative pole S pin with control chip U2 after resistance R3 is connected.The N pole of diode D1 is after critesistor RT
Be connected with the colelctor electrode of audion VT1, its P pole D pin with control chip U2 after resistance R4 is connected.Power factor school
Positive circuit is serially connected between the cathode output end of diode rectifier U1 and the emitter stage of audion VT1.Operational amplification circuit string
It is connected between non-same polarity and the one-level reverse excitation circuit of transformator T former limit inductance coil L2.One-level reverse excitation circuit respectively with
The C pin of control chip U2 is connected with S pin.Constant-current drive circuit is connected with transformator T and one-level reverse excitation circuit respectively
Connect.
The Same Name of Ends of described transformator T former limit inductance coil L1 is connected with the colelctor electrode of audion VT1, its inductance coil
The non-same polarity of L1 is connected with the P pole of diode D1；The Same Name of Ends ground connection of described transformator T former limit inductance coil L2；Described
Transformator T secondary inductance coil L3 is connected with constant-current drive circuit；The input of described diode rectifier U1 and external electrical
Source is connected.
Wherein, described one-level reverse excitation circuit is by photoelectrical coupler IC, resistance R8, resistance R9, adjustable resistance R10, resistance
R11, polar capacitor C3, polar capacitor C4, polar capacitor C5, diode D2, and diode D3 form.
During connection, the P pole of diode D2 is connected with the negative pole of polar capacitor C10, its N pole after resistance R11 with photoelectricity
First outfan of bonder IC is connected.The negative pole of polar capacitor C4 is connected with the N pole of diode D2, its positive pole is through resistance
After R8, the C pin with control chip U2 is connected.The N pole of diode D3 is connected with the C pin of control chip U2, its P pole warp
After adjustable resistance R10, the second outfan with photoelectrical coupler IC is connected.
Meanwhile, one end of resistance R9 be connected with the N pole of diode D3, the S pin phase of its other end and control chip U2
Connect.The minus earth of polar capacitor C3, its positive pole are connected with the S pin of control chip U2.The positive pole of polar capacitor C5 with
The first input end of photoelectrical coupler IC is connected, its minus earth.Second input end grounding of described photoelectrical coupler IC；Institute
The first input end stating photoelectrical coupler IC as the input of one-level reverse excitation circuit and is connected with constant-current drive circuit.
Further, described constant-current drive circuit is by audion VT2, resistance R5, resistance R6, resistance R7, resistance R12, electricity
Resistance R13, resistance R14, resistance R15, polar capacitor C6, polar capacitor C7, polar capacitor C8, diode D4, Zener diode D5,
And inductance L4 composition.
During connection, the positive pole of polar capacitor C7 is connected with the non-same polarity of transformator T secondary inductance coil L3, its negative pole
After resistance R6, the emitter stage with audion VT2 is connected.The P pole of diode D4 is connected with the positive pole of polar capacitor C6, institute
The Same Name of Ends of the negative pole and transformator T secondary inductance coil L3 of stating polar capacitor C6 is connected, and the N pole of described diode D4 is through electricity
It is connected with the emitter stage of audion VT2 after resistance R5.One end of resistance R7 is connected with the base stage of audion VT2, its other end
Tap with transformator T secondary inductance coil L3 is connected.
Wherein, the N pole of Zener diode D5 emitter stage with audion VT2 after inductance L4 be connected, its N pole sequentially warp
After resistance R13 and resistance R12, the first input end with photoelectrical coupler IC is connected.The positive pole of polar capacitor C8 and voltage stabilizing two pole
The N pole of pipe D5 is connected, its negative pole colelctor electrode with audion VT2 after resistance R14 is connected.One end of resistance R15 and three
The emitter stage of pole pipe VT2 is connected, its other end is connected with the colelctor electrode of audion VT2.
The grounded collector of described audion VT2；The negative pole of described polar capacitor C11 and transformator T secondary inductance coil
The Same Name of Ends of L3 is connected；The negative pole of described polar capacitor C8 and positive pole be collectively forming constant-current drive circuit outfan and with
LED group is connected.
As in figure 2 it is shown, described operational amplification circuit is by amplifier P, audion VT3, audion VT4, resistance R16, resistance
R17, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, polar capacitor
C9, polar capacitor C10, polar capacitor C11, polar capacitor C12, diode D6, Zener diode D7, and diode D8 group
Become.
During connection, the positive pole of polar capacitor C9 electrode input end with amplifier P after resistance R16 is connected, its negative pole
As the input of operational amplification circuit and it is connected with one-level reverse excitation circuit.The P pole of diode D6 after resistance R17 with pole
The positive pole of property electric capacity C9 is connected, its N pole negative input with amplifier P after resistance R19 is connected.Polar capacitor C11
Negative pole be connected with the base stage of audion VT3, its positive pole negative input with amplifier P after resistance R18 is connected.Pole
The property positive pole of electric capacity C12 is connected with the N pole of diode D6, its negative pole base stage with audion VT4 after resistance R20 is connected
Connect.
Meanwhile, the positive pole of polar capacitor C10 be connected with the outfan of amplifier P, its negative pole after resistance R24 with three poles
The colelctor electrode of pipe VT3 is connected.The N pole of Zener diode D7 negative pole with polar capacitor C10 after resistance R23 is connected, its P
Pole anelectrode with amplifier P after resistance R21 is connected.One end of resistance R22 is connected with the outfan of amplifier P, it
The other end is connected with the emitter stage of audion VT3.The P pole of diode D8 after resistance R25 with the colelctor electrode phase of audion VT3
Connection, its N pole ground connection.
The grounded collector of described audion VT4, its emitter stage are connected with the colelctor electrode of audion VT3；Described amplification
The negative electrode ground connection of device P；The N pole of described diode D8 is connected with the colelctor electrode of audion VT3；Described polar capacitor C10's
Negative pole is connected as the outfan of operational amplification circuit the non-same polarity of limit inductance coil L2 former with transformator T.
As it is shown on figure 3, described circuit of power factor correction is by field effect transistor MOS1, field effect transistor MOS2, resistance R26, electricity
Resistance R27, resistance R28, resistance R29, resistance R30, resistance R31, resistance R32, resistance R33, resistance R34, polar capacitor C13, pole
Property electric capacity C14, polar capacitor C15, polar capacitor C16, diode D9, diode D10, diode D11, and inductance L5 group
Become.
During connection, the N pole of diode D10 source electrode with field effect transistor MOS2 after resistance R31 is connected, its P pole sequentially
It is connected through resistance R30 source electrode with field effect transistor MOS1 after inductance L5.The P pole of diode D10 after resistance R29 with two poles
The N pole of pipe D11 is connected, its N pole is connected with the junction point of resistance R30 with inductance L5.The positive pole of polar capacitor C16 is through resistance
After R32, the P pole with diode D11 is connected, the drain electrode with field effect transistor MOS2 after resistance R34 of its negative pole is connected.
Meanwhile, the negative pole of polar capacitor C15 positive pole with polar capacitor C16 after resistance R33 be connected, its positive pole and two
The N pole of pole pipe D11 is connected.The positive pole of polar capacitor C13 is connected with the drain electrode of field effect transistor MOS1, its minus earth.Can
The one end adjusting resistance R28 is connected with the negative pole of polar capacitor C13, its other end is connected with the drain electrode of field effect transistor MOS2.
The N pole of diode D9 is connected with the negative pole of polar capacitor C13, its P pole after resistance R26 with the source electrode phase of field effect transistor MOS1
Connect.The positive pole of polar capacitor C14 P pole with diode D9 after resistance R27 is connected, its negative pole and field effect transistor MOS2
Grid is connected.
The grounded drain of described field effect transistor MOS2；The grid of field effect transistor MOS1 is defeated with the negative pole of diode rectifier U1
Go out end to be connected；The positive pole of described polar capacitor C16 is connected with the emitter stage of audion VT1.
During operation, it is constant that the present invention can control current peak, controls duty cycle of switching simultaneously, keeps output whole switch week
Phase time scale is constant, and power factor can be adjusted by the present invention, makes power factor PF > 0.9, thus the present invention realizes
Output electric current constant.And the present invention only needs the starting current of 0.5 μ A, i.e. reduce the power consumption of startup, make the effect of the present invention
Rate is more than 80%, and no-load power consumption is less than 30mW, thus improves the efficiency of the present invention.Meanwhile, the drive efficiency of the present invention is high, i.e.
Full load efficiency of the present invention is up to more than 90%.
In order to preferably implement the present invention, described control chip have employed the integrated chip of TOP224Y and realizes, should
TOP224Y integrated chip constant current accuracy is high, exports current error < 2%.
According to above-described embodiment, can well realize the present invention.
Claims (6)
1. inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction drives power supply, it is characterised in that mainly by controlling core
Sheet U2, diode rectifier U1, transformator T, audion VT1, positive pole is connected with the cathode output end of diode rectifier U1,
The polar capacitor C1 that negative pole is connected with the cathode output end of diode rectifier U1, one end is connected with the base stage of audion VT1
Connect, resistance R1 that the other end is connected with the negative pole of polar capacitor C1, positive pole after resistance R2 with diode rectifier U1 just
Polar capacitor C2, the N pole that pole outfan is connected, negative pole is connected with the S pin of control chip U2 after resistance R3 is through temperature-sensitive
After resistance RT, the colelctor electrode with audion VT1 is connected, P pole is connected with the D pin of control chip U2 after resistance R4 two
Pole pipe D1, is serially connected in the PFC between the cathode output end of diode rectifier U1 and the emitter stage of audion VT1
Circuit, the one-level reverse excitation circuit being connected with C pin and the S pin of control chip U2 respectively, it is serially connected in transformator T former limit electricity
Sense coil L2 non-same polarity and one-level reverse excitation circuit between operational amplification circuit, and respectively with transformator T and one-level
The constant-current drive circuit composition that reverse excitation circuit is connected；The Same Name of Ends of described transformator T former limit inductance coil L1 and audion
The colelctor electrode of VT1 is connected, the non-same polarity of its inductance coil L1 is connected with the P pole of diode D1；The described former limit of transformator T
The Same Name of Ends ground connection of inductance coil L2；Described transformator T secondary inductance coil L3 is connected with constant-current drive circuit.
Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction the most according to claim 1 drives power supply, and it is special
Levy and be, described circuit of power factor correction by field effect transistor MOS1, field effect transistor MOS2, N pole after resistance R31 with field effect
Two poles that the source electrode of pipe MOS2 is connected, P pole is sequentially connected with the source electrode of field effect transistor MOS1 after inductance L5 through resistance R30
N pole with diode D11 after resistance R29, pipe D10, P pole is connected, N pole is connected with the junction point of resistance R30 with inductance L5
Diode D10, positive pole P pole with diode D11 after resistance R32 is connected, negative pole after resistance R34 with field effect transistor
The polar capacitor C16 that the drain electrode of MOS2 is connected, negative pole positive pole with polar capacitor C16 after resistance R33 is connected, positive pole with
The polar capacitor C15 that the N pole of diode D11 is connected, positive pole is connected with the drain electrode of field effect transistor MOS1, the pole of minus earth
Property electric capacity C13, one end is connected with the negative pole of polar capacitor C13, the other end is connected with the drain electrode of field effect transistor MOS2 can
Adjusting resistance R28, N pole is connected with the negative pole of polar capacitor C13, P pole source electrode with field effect transistor MOS1 after resistance R26 is connected
The diode D9 connect, and positive pole P pole with diode D9 after resistance R27 is connected, the grid of negative pole and field effect transistor MOS2
The polar capacitor C14 composition that pole is connected；The grounded drain of described field effect transistor MOS2；The grid of field effect transistor MOS1 and two poles
The cathode output end of pipe commutator U1 is connected；The positive pole of described polar capacitor C16 is connected with the emitter stage of audion VT1.
Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction the most according to claim 2 drives power supply, and it is special
Levy and be, described operational amplification circuit by amplifier P, audion VT3, audion VT4, positive pole after resistance R16 with amplifier P
Electrode input end be connected, negative pole is as the input of operational amplification circuit the polarity that is connected with one-level reverse excitation circuit
Electric capacity C9, P pole is connected with the positive pole of polar capacitor C9 after resistance R17, N pole is defeated with the negative pole of amplifier P after resistance R19
Enter the diode D6 that is connected of end, negative pole is connected with the base stage of audion VT3, positive pole after resistance R18 with the bearing of amplifier P
The polar capacitor C11 that pole input is connected, positive pole is connected with the N pole of diode D6, negative pole after resistance R20 with audion
The polar capacitor C12 that the base stage of VT4 is connected, positive pole is connected with the outfan of amplifier P, negative pole after resistance R24 with three
Polar capacitor C10, the N pole that the colelctor electrode of pole pipe VT3 is connected negative pole with polar capacitor C10 after resistance R23 is connected, P
The Zener diode D7 that pole anelectrode with amplifier P after resistance R21 is connected, one end is connected with the outfan of amplifier P
Connect, resistance R22 that the other end is connected with the emitter stage of audion VT3, and P pole after resistance R25 with the collection of audion VT3
Electrode is connected, the diode D8 of N pole ground connection composition；The grounded collector of described audion VT4, its emitter stage and audion
The colelctor electrode of VT3 is connected；The negative electrode ground connection of described amplifier P；The N pole of described diode D8 and the current collection of audion VT3
Pole is connected；The negative pole of described polar capacitor C10 is as the outfan of operational amplification circuit limit former with transformator T inductance coil
The non-same polarity of L2 is connected.
Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction the most according to claim 3 drives power supply, and it is special
Levying and be, described one-level reverse excitation circuit is connected with the negative pole of polar capacitor C10 by photoelectrical coupler IC, P pole, N pole is through electricity
The diode D2 that is connected with first outfan of photoelectrical coupler IC after resistance R11, negative pole is connected with the N pole of diode D2,
The C pin phase of polar capacitor C4, the N pole that positive pole is connected with the C pin of control chip U2 after resistance R8 and control chip U2
The diode D3 that connection, P pole are connected with second outfan of photoelectrical coupler IC after adjustable resistance R10, one end and two poles
The resistance R9 that the N pole of pipe D3 is connected, the other end is connected with the S pin of control chip U2, minus earth, positive pole and control core
The polar capacitor C3 that the S pin of sheet U2 is connected, and positive pole is connected with the first input end of photoelectrical coupler IC, negative pole connects
The polar capacitor C5 composition on ground；Second input end grounding of described photoelectrical coupler IC；The first of described photoelectrical coupler IC is defeated
Enter end as the input of one-level reverse excitation circuit and to be connected with constant-current drive circuit.
Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction the most according to claim 4 drives power supply, and it is special
Levying and be, described constant-current drive circuit is connected with the non-same polarity of transformator T secondary inductance coil L3 by audion VT2, positive pole
Connect, polar capacitor C7, N pole that negative pole emitter stage with audion VT2 after resistance R6 is connected after resistance R5 with audion
The emitter stage of VT2 is connected, P pole Same Name of Ends with transformator T secondary inductance coil L3 after polar capacitor C6 is connected two
Pole pipe D4, one end is connected with the base stage of audion VT2, the other end is connected with the tap of transformator T secondary inductance coil L3
Resistance R7, N pole emitter stage with audion VT2 after inductance L4 be connected, N pole sequentially after resistance R13 and resistance R12 with
The Zener diode D5 that the first input end of photoelectrical coupler IC is connected, positive pole is connected with the N pole of Zener diode D5, bears
The polar capacitor C8 that pole colelctor electrode with audion VT2 after resistance R14 is connected, and the transmitting of one end and audion VT2
The resistance R15 composition that pole is connected, the other end is connected with the colelctor electrode of audion VT2；The colelctor electrode of described audion VT2 connects
Ground；The negative pole of described polar capacitor C11 is connected with the Same Name of Ends of transformator T secondary inductance coil L3；Described polar capacitor C8
Negative pole and positive pole be collectively forming the outfan of constant-current drive circuit.
Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction the most according to claim 5 drives power supply, and it is special
Levying and be, described control chip U2 is the integrated chip of TOP224Y.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395723.5A CN106102211A (en) | 2016-06-06 | 2016-06-06 | Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction drives power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395723.5A CN106102211A (en) | 2016-06-06 | 2016-06-06 | Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction drives power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106102211A true CN106102211A (en) | 2016-11-09 |
Family
ID=57447690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610395723.5A Pending CN106102211A (en) | 2016-06-06 | 2016-06-06 | Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction drives power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106102211A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658863A (en) * | 2017-01-20 | 2017-05-10 | 湖南炬神电子有限公司 | High-reliability and long-service life synchronous rectifier power supply |
-
2016
- 2016-06-06 CN CN201610395723.5A patent/CN106102211A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658863A (en) * | 2017-01-20 | 2017-05-10 | 湖南炬神电子有限公司 | High-reliability and long-service life synchronous rectifier power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105873286A (en) | Energy-saving power circuit for constant-current drive type cold light LED | |
| CN106163003A (en) | A kind of LED dimming drive power based on ripple peak restrained circuit | |
| CN106211426A (en) | A kind of voltage amplification scale-up version cold light LED energy-saving electric power circuit | |
| CN106102211A (en) | Inverse-excitation type LED switch voltage stabilizing based on circuit of power factor correction drives power supply | |
| CN105873299A (en) | LED (light emitting diode) switch voltage stabilizing driving power supply based on power factor correction circuit | |
| CN105873298A (en) | LED (light emitting diode) switch voltage stabilizing driving power supply based on constant current driving circuit | |
| CN105916252A (en) | LED switch voltage stabilization driving power supply based on current adjusting circuit | |
| CN105934044A (en) | Multi-way output voltage stabilized power supply for LED based on snubber circuit | |
| CN106028568A (en) | LED constant-current driving power supply based on surge voltage suppression circuit | |
| CN106061031A (en) | Multi-circuit processing type LED constant current driving power supply | |
| CN106132015A (en) | A kind of LED constant current drives power supply | |
| CN105979633A (en) | Two-odder active low-pass filter circuit based source electrode voltage-stabilizing power supply for LED lamp band | |
| CN106211453A (en) | A kind of ripple suppressive LED dimming drive power based on linear amplifier circuit | |
| CN106211444A (en) | A kind of discrete bootstrap current scale-up version cold light LED energy-saving electric power | |
| CN106132008A (en) | A kind of audion overcurrent protective cold light LED energy-saving electric power circuit | |
| CN106231720A (en) | A kind of many processing of circuit type LED dimming drive power | |
| CN106208758A (en) | A kind of instantaneous protection type PWM inverse-excitation type switch power-supply | |
| CN106253681A (en) | Instantaneous protection PWM inverse-excitation type switch power-supply based on feedback signal processing circuit | |
| CN106211439A (en) | A kind of LED power supply based on pulse current-limiting circuit | |
| CN106102236A (en) | A kind of overcurrent protective cold light LED voltage amplification power circuit | |
| CN106211457A (en) | A kind of LED dimming drive power based on linear amplifier circuit | |
| CN105873302A (en) | LED (light emitting diode) switch voltage stabilizing driving power supply based on operation amplification circuit | |
| CN106132010A (en) | A kind of diode pressure resistant type cold light LED energy-saving electric power circuit | |
| CN106028514A (en) | Over-current protection type high-power LED power supply based on constant current drive circuit | |
| CN106028515A (en) | Regulated driving power supply of LED switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |