CN206164910U - Ripple voltage suppression type starting circuit for electronic energy -saving lamp based on voltage buffering - Google Patents

Abstract

The utility model discloses a ripple voltage suppression type starting circuit for electronic energy -saving lamp based on voltage buffering, mainly by transformer T, diode rectifier U, amplifier P, triode VT1, triode VT2, triode VT3, triode VT4, triode VT5, polarity electric capacity C4, inductance L2, and the negative pole is connected with transformer T secondary inductance coil L4's non - end of the same name behind inductance L5, the constitutions such as polarity electric capacity C5 that collecting electrode anodal and triode VT2 is connected. The utility model discloses can carry out crossing for twice filtering to input voltage, can carry out fine suppression by effectual a lot of harmonic to in the voltage to can adjust the voltage and the electric current of output, make output voltage and electric current more stable, more steady, thereby the utility model discloses can be effectual ensure the stability of LED lamp luminance when lighting, the fine requirement of having satisfied people, fine extension the life of LED lamp.

Description

Electronic energy-saving lamp based on voltage buffer ripple voltage suppressive start-up circuit

Technical field

The utility model relates to a kind of start-up circuit, is a kind of electric energy-saving based on voltage buffer specifically Lamp ripple voltage suppressive start-up circuit.

Background technology

Electronic energy-saving lamp as novel energy-conserving light source, the features such as with its environmental protection, energy-conservation, life-span length, small volume, by people Extensively receive and adopt, LED is then a kind of electricity-saving lamp for enjoying people to favor in electronic energy-saving lamp.LED is a kind of special Property sensitive semiconductor devices, and with negative temperature characteristic, therefore in application process, LED start-up circuit is for promoting LED Lamp plays considerable effect in stable working condition and service life.However, existing LED start-up circuit is to defeated The harmonic inhibition capability entered in voltage is poor, and existing LED start-up circuit also has that power output is unstable, There is flicker in brightness when causing LED to be lit, so as to have a strong impact on the life of people and the service life of LED.

Therefore it provides one kind can be improved to harmonic inhibition capability, the LED of the stable voltage and current of output is can ensure that again Start-up circuit is the task of top priority.

Utility model content

The purpose of this utility model is to overcome existing LED start-up circuit to the harmonic inhibition capability in input voltage It is poor, and the unstable defect of power output, there is provided a kind of electronic energy-saving lamp based on voltage buffer pressed down with ripple voltage Type start-up circuit processed.

The utility model is achieved through the following technical solutions：Pressed down with ripple voltage based on the electronic energy-saving lamp of voltage buffer Type start-up circuit processed, mainly by transformer T, diode rectifier U, triode VT1, triode VT2, triode VT3, triode VT4, triode VT5, amplifier P, one end is connected with one of input of diode rectifier U, the other end and two poles Another input of pipe rectifier U is collectively forming the fuse FU of start-up circuit output end, and positive pole is with diode rectifier U's The polar capacitor C1 that cathode output end is connected, negative pole is connected Jing after inductance L1 with the cathode output end of diode rectifier U, The resistance R1 that one end is connected with the cathode output end of diode rectifier U, the other end is connected with the negative pole of polar capacitor C1, The resistance R2 that one end is connected with the cathode output end of diode rectifier U, the other end is connected with the positive pole of amplifier P, just The polar capacitor C2 that pole is connected Jing after resistance R3 with the positive pole of amplifier P, negative pole is connected with the output end of amplifier P, The adjustable resistance R4 that one end is connected with the negative pole of amplifier P, the other end is connected with the output end of amplifier P, negative pole with put The negative pole of big device P is connected, the polar capacitor C3 that positive pole is connected Jing after resistance R5 with the base stage of triode VT1, one end and pole Property electric capacity C3 negative pole be connected, the resistance R6 of other end ground connection, positive pole is connected Jing after resistance R8 with the colelctor electrode of triode VT2 Connect, the polar capacitor C4 that negative pole is connected with the base stage of triode VT3, one end is connected with the base stage of triode VT3, the other end The adjustable resistance R10 being connected with the emitter stage of triode VT3, P poles are connected Jing after resistance R7 with the base stage of triode VT2, N The diode D1 that pole is connected with the positive pole of polar capacitor C4, P poles are connected with the negative pole of polar capacitor C4, N poles Jing resistance R9 The diode D2 being connected with the N poles of diode D1 afterwards, positive pole is connected with the N poles of diode D2, negative pole sequentially Jing resistance R12 With the polar capacitor C7 being connected with the emitter stage of triode VT3 after resistance R11, negative pole is connected with the N poles of diode D2, just The polar capacitor C6 that pole is connected Jing after resistance R13 with the base stage of triode VT5, one end is connected with the P poles of diode D1, separately The inductance L2 that one end is connected with the Same Name of Ends of transformer T secondary inductance coil L4, negative pole Jing after inductance L5 with transformer T secondary The polar capacitor C5 that the non-same polarity of inductance coil L4 is connected, positive pole is connected with the colelctor electrode of triode VT2, N poles and three The diode D3 that the emitter stage of pole pipe VT5 is connected, P poles are connected Jing after resistance R15 with the base stage of triode VT4, positive pole with The polar capacitor C8 that the P poles of diode D3 are connected, negative pole is connected with the emitter stage of triode VT4, P poles are Jing after resistance R14 Be connected with the emitter stage of triode VT4, N poles be connected with the colelctor electrode of triode VT4 after be grounded diode D4, positive pole with The polar capacitor C9 that the base stage of triode VT4 is connected, negative pole is connected Jing after resistance R16 with the colelctor electrode of triode VT5, with And the adjustable resistance R17 groups that one end is connected with the colelctor electrode of triode VT4, the other end is connected with the negative pole of polar capacitor C9 Into.

The grounded collector of the triode VT5；The emitter stage of the triode VT4 also with transformer T former limit inductor wires The Same Name of Ends of circle L3 is connected；The output end of the amplifier P also respectively with the colelctor electrode of triode VT2 and triode VT1 Emitter stage is connected；The colelctor electrode of the triode VT1 is connected with the colelctor electrode of triode VT3 with the emitter stage of triode VT2 The tie point for connecing is connected；The minus earth of the polar capacitor C1；The emitter stage of the triode VT2 also with triode VT3 Colelctor electrode be connected；The grounded collector of the triode VT3；The N poles of the diode D1 also with transformer T secondary inductances The Same Name of Ends of coil L4 is connected；The non-same polarity ground connection of the transformer T former limits inductance coil L3；The polar capacitor C5 is Positive pole is collectively forming the output end of start-up circuit with negative pole.

To guarantee practical effect of the present utility model, the amplifier P is LM334 amplifiers.The transformer is EI57-30 step-up transformers；Simultaneously the resistance adjustable extent of the adjustable resistance R10 is 1～4M；The diode rectifier U For all-wave three-phase rectifier MT3510W.

The utility model compared with prior art, with advantages below and beneficial effect：

(1) the utility model can twice be filtered to input voltage, and effectively the multiple harmonic in voltage can be carried out Suppress well, and the voltage and current for exporting can be adjusted, make output voltage and electric current more stable, more steady, from And the stability of the utility model brightness when effectively can ensure that LED is lit, the requirement of people is met well, very The good service life for extending LED.

(2) the utility model can be limited the DC voltage high voltage of input and high current, can effectively reduce electricity Pressure and impact of the electric current to electronic component, and the waveform of voltage and current can be made to keep stable state, so as to he improves this reality With the stability of new output voltage.

(3) simple structure of the present utility model, practical, low production cost.

Description of the drawings

Fig. 1 is integrated circuit structural representation of the present utility model.

Specific embodiment

The utility model is described in further detail with reference to embodiment and its accompanying drawing, but reality of the present utility model Apply mode not limited to this.

As shown in figure 1, the utility model is mainly by transformer T, diode rectifier U, triode VT1, triode VT2, Triode VT3, triode VT4, triode VT5, amplifier P, resistance R1, resistance R2, resistance R3, adjustable resistance R4, resistance R5, Resistance R6, resistance R7, resistance R8, resistance R9, adjustable resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, can resistance trimming R17, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, polar capacitor C5, Polar capacitor C6, polar capacitor C7, polar capacitor C8, polar capacitor C9, diode D1, diode D2, diode D3, diode D4, and inductance L compositions.

To guarantee practical effect of the present utility model, the transformer is EI57-30 step-up transformers；It is simultaneously described The resistance adjustable extent of adjustable resistance R10 is 1～4M；Diode rectifier U is all-wave three-phase rectifier MT3510W；Meanwhile, put Big device P is LM334 amplifiers, and triode VT1 is 3AX-31 triodes, and triode VT2 and triode VT3 is the poles of 3D,D15 tri- Pipe, triode VT4 and triode VT5 is 2SC1317 triodes；The resistance of resistance R1 be 1000k Ω, the resistance of resistance R2～R6 It is 10 Ω that value is the resistance of 2M, resistance R7 and resistance R8, and the resistance of resistance R9, resistance R11, resistance R12 and resistance R13 is The resistance of the resistance 100k Ω of 10 Ω, resistance R14 and resistance R15, resistance R16 is 5.1k Ω, and the resistance of adjustable resistance R17 is adjusted Scope is 200～460k Ω；Polar capacitor C1 and polar capacitor C2 is that its capacitance of filter capacitor is 10000 μ F, polar capacitor C3 Capacitance be 400 μ F, the capacitance of polar capacitor C4 is 4.7 μ F, and it is 20000 μ F/ that polar capacitor C5 is charging capacitor its capacitance The polar capacitor of 800V, the capacitance of polar capacitor C6 is 400 μ F, and the capacitance of polar capacitor C7 is 2000 μ F, polar capacitor C8's Capacitance is 1 μ F, and the capacitance of polar capacitor C9 is 0.47 μ F；Diode D1 and diode D2 are 1N5401 diodes, diode D3 and diode D4 are 1N5411 diodes；Inductance L1 is the filter inductance of 100 μ h, and inductance L2 and inductance L5 is 100 μ h Vibration inductance.

During connection, one end of fuse FU is connected with one of input of diode rectifier U, the other end and two Another input of pole pipe rectifier U is collectively forming start-up circuit output end and is connected with civil power.Polar capacitor C1 is just Pole is connected with the cathode output end of diode rectifier U, negative pole Jing after inductance L1 with the cathode output end of diode rectifier U It is connected.One end of resistance R1 is connected with the cathode output end of diode rectifier U, the negative pole of the other end and polar capacitor C1 It is connected.One end of resistance R2 is connected with the cathode output end of diode rectifier U, the positive pole phase of the other end and amplifier P Connection.What the positive pole of polar capacitor C2 was connected Jing after resistance R3 with the positive pole of amplifier P, the output end of negative pole and amplifier P It is connected.

Wherein, one end of adjustable resistance R4 is connected with the negative pole of amplifier P, the output end phase of the other end and amplifier P Connection.The negative pole of polar capacitor C3 is connected with the negative pole of amplifier P, positive pole Jing after resistance R5 with the base stage phase of triode VT1 Connection.One end of resistance R6 is connected with the negative pole of polar capacitor C3, other end ground connection.The positive pole Jing resistance R8 of polar capacitor C4 It is connected with the colelctor electrode of triode VT2 afterwards, negative pole is connected with the base stage of triode VT3.One end of adjustable resistance R10 and three The base stage of pole pipe VT3 is connected, and the other end is connected with the emitter stage of triode VT3.The P poles of diode D1 Jing after resistance R7 with The base stage of triode VT2 is connected, and N poles are connected with the positive pole of polar capacitor C4.The P poles of diode D2 are with polar capacitor C4's Negative pole is connected, and N poles are connected Jing after resistance R9 with the N poles of diode D1.

Meanwhile, the positive pole of polar capacitor C7 is connected with the N poles of diode D2, negative pole sequentially Jing resistance R12 and resistance R11 It is connected with the emitter stage of triode VT3 afterwards.The negative pole of polar capacitor C6 is connected with the N poles of diode D2, positive pole Jing resistance It is connected with the base stage of triode VT5 after R13.One end of inductance L2 is connected with the P poles of diode D1, the other end and transformer The Same Name of Ends of T secondary inductance coil L4 is connected.The negative pole of polar capacitor C5 Jing after inductance L5 with transformer T secondary inductance coils The non-same polarity of L4 is connected, and positive pole is connected with the colelctor electrode of triode VT2.Send out with triode VT5's the N poles of diode D3 Emitter-base bandgap grading is connected, and P poles are connected Jing after resistance R15 with the base stage of triode VT4.The positive pole of polar capacitor C8 is with diode D3's P poles are connected, and negative pole is connected with the emitter stage of triode VT4.The P poles of diode D4 are Jing after resistance R14 with triode VT4's Emitter stage is connected, and N poles are grounded after being connected with the colelctor electrode of triode VT4.The positive pole of polar capacitor C9 is with triode VT4's Base stage is connected, and negative pole is connected Jing after resistance R16 with the colelctor electrode of triode VT5.One end of adjustable resistance R17 and triode The colelctor electrode of VT4 is connected, and the other end is connected with the negative pole of polar capacitor C9.

The grounded collector of the triode VT5；The emitter stage of the triode VT4 also with transformer T former limit inductor wires The Same Name of Ends of circle L3 is connected；The output end of the amplifier P also respectively with the colelctor electrode of triode VT2 and triode VT1 Emitter stage is connected；The colelctor electrode of the triode VT1 is connected with the colelctor electrode of triode VT3 with the emitter stage of triode VT2 The tie point for connecing is connected；The minus earth of the polar capacitor C1；The emitter stage of the triode VT2 also with triode VT3 Colelctor electrode be connected；The grounded collector of the triode VT3；The N poles of the diode D1 also with transformer T secondary inductances The Same Name of Ends of coil L4 is connected；The non-same polarity ground connection of the transformer T former limits inductance coil L3；The polar capacitor C5 is Positive pole is collectively forming the output end of start-up circuit with negative pole, and operationally LED is then serially connected in the negative pole and positive pole of polar capacitor C5 Between.

During work, the current rectifying and wave filtering circuit that 220V civil power Jing diode rectifier U, polar capacitor C1 and resistance R1 are formed enters After row rectifying and wave-filtering, the current rectifying and wave filtering circuit exports stable 310V DC voltages,

And the 310V DC voltages then by amplifier P, triode VT1, polar capacitor C2, polar capacitor C3, resistance R2, The ripple peak restrained circuit transmission that resistance R3, adjustable resistance R4, resistance R5 and resistance R6 are formed, the ripple peak restrained circuit In polar capacitor C2 and polar capacitor C3 define double filter, the double filter can effectively will input DC voltage in Higher hamonic wave eliminated or suppressed, the higher hamonic wave of formation is discharged Jing after resistance R6 drop streams, Jing after double filter process The discharge circuit that DC voltage is then formed by amplifier P and adjustable resistance R4 exports stable, clean 310V after being adjusted DC voltage.Operating voltage of the 310V DC voltages as this start-up circuit.Operationally triode VT1, triode VT2, Triode VT4, triode VT5 and transformer T-shaped into self-maintained circuit of the present utility model,

310V DC voltages Jing adjustable resistances R10, polar capacitor C4, diode D2 and pole after into self-maintained circuit Property the voltage adjuster that formed of electric capacity C7 carry out electric current adjustment, effectively eliminate the instantaneous high current produced when input voltage is loaded Suppressed, while the triode VT5 that the voltage after the process is connected by Jing resistance R13 with the positive pole of polar capacitor C5, Triode VT4, resistance R14, resistance R15, resistance R16, adjustable resistance R17, polar capacitor C8, polar capacitor C9, diode D3 The transformer T of self-maintained circuit is transferred to after the buffer circuit formed with diode D4, the circuit can go out in voltage and current The base stage of triode VT5 and colelctor electrode conducting high voltage and the resistance of high current Jing resistance R16 and adjustable resistance R17 when now fluctuating High current is limited, effectively ensure that transformer T is not damaged by high voltage, and effectively ensure that the original of transformer T Side input voltage is more stable.

Finally, the self-maintained circuit will adjust, generate after the vibration of 310V DC voltages after buffered it is stable The high frequency voltage of 50kHz/270V, used as the operating voltage of electronic energy-saving lamp, the voltage is finally by polarity electricity for the high frequency voltage The concatenation resonance brightness device for holding C5 and inductance L2 and inductance L5 formation is supplied to LED, and in the process polar capacitor C5 can enter Row quickly charges.The stable performance of the concatenation resonance brightness device, the moment of output starts on voltage Gao Erwen, and polar capacitor C5 Moment resonance potential be the high transient voltages of stable 600V, be added on the electrode input at the two ends of LED can quickly by LED is lighted.After LED is lit, the voltage on polar capacitor C5 just returns to the normal of LED in the state of load Working value.

The utility model can be carried out effectively very by being filtered twice to input voltage to the multiple harmonic in voltage Good suppression, and the voltage and current for exporting can be adjusted, make output voltage and electric current more stable, more steady, so as to The stability of brightness when the utility model effectively can ensure that LED is lit, meets well the requirement of people, very well The service life for extending LED.And simple structure of the present utility model, practical, low production cost, so as to this reality With the new requirement for being well positioned to meet people.

According to above-described embodiment, you can realize the utility model well.

Claims (5)

1. the electronic energy-saving lamp ripple voltage suppressive start-up circuit of voltage buffer is based on, it is characterised in that main by transformation Device T, diode rectifier U, triode VT1, triode VT2, triode VT3, triode VT4, triode VT5, amplifier P, One end is connected with one of input of diode rectifier U, another input of the other end and diode rectifier U The fuse FU of start-up circuit output end is collectively forming, positive pole is connected with the cathode output end of diode rectifier U, negative pole Jing The polar capacitor C1 being connected with the cathode output end of diode rectifier U after inductance L1, one end is with diode rectifier U just The resistance R1 that pole output end is connected, the other end is connected with the negative pole of polar capacitor C1, one end is with diode rectifier U just The resistance R2 that pole output end is connected, the other end is connected with the positive pole of amplifier P, positive pole is Jing after resistance R3 with amplifier P's The polar capacitor C2 that positive pole is connected, negative pole is connected with the output end of amplifier P, one end is connected with the negative pole of amplifier P Connect, the adjustable resistance R4 that the other end is connected with the output end of amplifier P, negative pole is connected with the negative pole of amplifier P, positive pole Jing The polar capacitor C3 being connected with the base stage of triode VT1 after resistance R5, one end is connected with the negative pole of polar capacitor C3, another The resistance R6 of end ground connection, positive pole is connected Jing after resistance R8 with the colelctor electrode of triode VT2, the base stage of negative pole and triode VT3 The polar capacitor C4 being connected, one end is connected with the base stage of triode VT3, the other end is connected with the emitter stage of triode VT3 The adjustable resistance R10 for connecing, P poles are connected Jing after resistance R7 with the base stage of triode VT2, the positive pole phase of N poles and polar capacitor C4 The diode D1 of connection, P poles are connected with the negative pole of polar capacitor C4, N poles are connected Jing after resistance R9 with the N poles of diode D1 Diode D2, positive pole is connected with the N poles of diode D2, negative pole sequentially Jing after resistance R12 and resistance R11 with triode VT3 The polar capacitor C7 that is connected of emitter stage, negative pole is connected with the N poles of diode D2, positive pole Jing after resistance R13 with triode The polar capacitor C6 that the base stage of VT5 is connected, one end is connected with the P poles of diode D1, the other end and transformer T secondary inductances The inductance L2 that the Same Name of Ends of coil L4 is connected, negative pole Jing after inductance L5 with the non-same polarity of transformer T secondary inductance coil L4 Be connected, the polar capacitor C5 that positive pole is connected with the colelctor electrode of triode VT2, N poles are connected with the emitter stage of triode VT5 Connect, the diode D3 that P poles are connected Jing after resistance R15 with the base stage of triode VT4, positive pole is connected with the P poles of diode D3, The polar capacitor C8 that negative pole is connected with the emitter stage of triode VT4, P poles Jing after resistance R14 with the emitter stage phase of triode VT4 The diode D4 that connection, N poles are grounded after being connected with the colelctor electrode of triode VT4, positive pole is connected with the base stage of triode VT4 Connect, the polar capacitor C9 that negative pole is connected Jing after resistance R16 with the colelctor electrode of triode VT5, and one end and triode VT4 The adjustable resistance R17 compositions that colelctor electrode is connected, the other end is connected with the negative pole of polar capacitor C9；

The grounded collector of the triode VT5；The emitter stage of the triode VT4 also with transformer T former limit inductance coil L3 Same Name of Ends be connected；The output end of amplifier P colelctor electrode also respectively with triode VT2 and the transmitting of triode VT1 Pole is connected；The colelctor electrode of the triode VT1 is connected with the colelctor electrode of triode VT3 with the emitter stage of triode VT2 Tie point is connected；The minus earth of the polar capacitor C1；The emitter stage of the triode VT2 also with the collection of triode VT3 Electrode is connected；The grounded collector of the triode VT3；The N poles of the diode D1 also with transformer T secondary inductance coils The Same Name of Ends of L4 is connected；The non-same polarity ground connection of the transformer T former limits inductance coil L3；The polar capacitor C5 is positive pole With the output end that negative pole is collectively forming start-up circuit.

2. the electronic energy-saving lamp based on voltage buffer according to claim 1 ripple voltage suppressive start-up circuit, its It is characterised by, the amplifier P is LM334 amplifiers.

3. the electronic energy-saving lamp based on voltage buffer according to claim 2 ripple voltage suppressive start-up circuit, its It is characterised by, the transformer T is EI57-30 step-up transformers.

4. the electronic energy-saving lamp based on voltage buffer according to claim 3 ripple voltage suppressive start-up circuit, its It is characterised by, the resistance adjustable extent of the adjustable resistance R10 is 1～4M.

5. the electronic energy-saving lamp based on voltage buffer according to claim 4 ripple voltage suppressive start-up circuit, its It is characterised by, the diode rectifier U is all-wave three-phase rectifier MT3510W.