CN206181433U - Steady voltage energy -saving control circuit is used in LED flash light area - Google Patents

Abstract

The utility model discloses a steady voltage energy -saving control circuit is used in LED flash light area, mainly by diode rectifier U1, control chip U2, field effect transistor MOS, triode VT1, triode VT2, triode VT3, triode VT4, triode VT5, unidirectional thyristor VS, polarity electric capacity C9 to reach constitutions such as resistance R7. The utility model discloses a suppress or eliminate the harmonic in the DC voltage to the high electric current in the twinkling of an eye that produces during to direct current load voltage limits or adjusts the back, make the DC voltage more totally, more steady, thereby improved the utility model discloses output voltage stabilizes the effect, consequently the utility model discloses can be effectual prevent that scintillation in succession from appearing in LED flash light area LEDW when the brightness flop, can the effectual life who prolongs LED flash light area LEDW, fine saving material resources.

Description

A kind of LED flash band voltage-stabilizing and energy-saving control circuit

Technical field

The utility model relates to a kind of energy-saving control circuit, is a kind of LED flash band voltage stabilizing section specifically Can control circuit.

Background technology

Now with the continuous improvement of the living standard of people, to the requirement of landscaping lived also more and more higher, people For the living environment for making oneself beautiful, just brought using the LED flash with various light sources and interior beautified, and people It is many LED flash band is disposed in the interior in the undercut at top, formed not under the control of the control circuit of LED flash band The beautiful ring of light of well-illuminated degree, the ring of light can not only beautify living environment, moreover it is possible to bring a kind of beautiful magical at night for people Sense.However, the control circuit of existing LED flash band has that output voltage stability is poor, cause LED flash band Occurs continuous flicker, the serious service life for shortening LED flash band, so as to cause material resources in brightness flop Significant wastage.

Therefore it provides a kind of LED flash band control circuit that can improve output voltage stabilization effect is when business It is anxious.

Utility model content

The purpose of this utility model is that the control circuit for overcoming existing LED flash band has output voltage stability Poor defect, there is provided a kind of LED flash band voltage-stabilizing and energy-saving control circuit.

This utility model is achieved through the following technical solutions：A kind of LED flash band voltage-stabilizing and energy-saving control circuit, it is main Will be by diode rectifier U1, control chip U2, field effect transistor MOS, audion VT1, audion VT2, audion VT3, three poles Pipe VT4, audion VT5, unidirectional thyristor VS, positive pole is connected with the cathode output end of diode rectifier U1, negative pole and two The cathode output end of pole pipe commutator U1 be connected after be grounded polar capacitor C1, N poles Jing after resistance R1 with diode rectifier The Zener diode D1 that the cathode output end of U1 is connected, P poles are connected with the cathode output end of diode rectifier U1, positive pole Be connected with the N poles of Zener diode D1 Jing after inductance L1, negative pole be connected with the colelctor electrode of audion VT1 after be grounded polarity Electric capacity C4, positive pole is connected with the cathode output end of diode rectifier U1, negative pole Jing after resistance R4 with the transmitting of audion VT1 The polar capacitor C2 that pole is connected, P poles are connected with the cathode output end of diode rectifier U1, N poles and audion VT1 send out The diode D2 that emitter-base bandgap grading is connected, positive pole is connected with the P poles of diode D1, negative pole is connected with the colelctor electrode of audion VT1 Polar capacitor C3, N poles are connected with the emitter stage of audion VT1, P poles Jing after adjustable resistance R2 with the positive pole of polar capacitor C3 The diode D3 being connected, one end is connected with the base stage of audion VT1, the electricity that the other end is connected with the P poles of diode D3 Resistance R3, one end is connected with the positive pole of polar capacitor C4, the resistance R5 that the other end is connected with the VDD pins of control chip U2, Positive pole is connected Jing after adjustable resistance R6 with the base stage of audion VT2, negative pole is connected with the OSC1 pins of control chip U2 Polar capacitor C5, P pole is connected with the KEY pins of control chip U2, the diode that N poles are connected with the base stage of audion VT2 D4, the inductance L2 that one end is connected with the OSC4 pins of control chip U2, the other end is connected with the base stage of audion VT2, P poles Be connected with the Q3 pins of control chip U2 Jing after resistance R12, N poles Jing after resistance R13 with the base stage phase of audion VT5 The diode D5 of connection, one end is connected with the colelctor electrode of audion VT4, the other end is connected with the colelctor electrode of audion VT3 The resistance R11 being grounded afterwards, positive pole is connected with the Q2 pins of control chip U2, negative pole is connected with the base stage of audion VT4 Polar capacitor C6, positive pole is connected Jing after resistance R9 with the Q1 pins of control chip U2, negative pole is connected with the base stage of audion VT3 The polar capacitor C7 for connecing, negative pole is connected with the emitter stage of audion VT4, positive pole Jing after resistance R8 with the transmitting of audion VT3 The polar capacitor C8 that pole is connected, positive pole is connected with the emitter stage of audion VT3, the control end of negative pole and unidirectional thyristor VS The polar capacitor C9 being connected, one end is connected with the emitter stage of audion VT3, the emitter stage phase of the other end and audion VT5 The resistance R10 of connection, one end is connected with the anode of unidirectional thyristor VS, the P poles of the other end and diode D3 are collectively forming control The resistance R7 of the outfan of circuit processed, P poles are connected with the VSS pins of control chip U2, N poles Jing after resistance R13 with field effect The diode D6 that the source electrode of pipe MOS is connected, negative pole is connected Jing after resistance R12 with the P poles of diode D6, positive pole with control core The polar capacitor C12 that the VSS pins of piece U2 are connected, positive pole is connected, bears Jing after adjustable resistance R14 with the P poles of diode D6 The polar capacitor C11 that pole is connected with the source electrode of field effect transistor MOS, one end is connected with the positive pole of polar capacitor C12, the other end The inductance L3 being connected with the grid of field effect transistor MOS, and positive pole be connected with the P poles of diode D3, negative pole and this is new The polar capacitor C10 compositions that the drain electrode of employee is connected.

The source ground of field effect transistor MOS；The N poles of the diode D4 are also connected with the adjustable side of adjustable resistance R6 Connect；The grounded collector of the audion VT2, its emitter stage are connected with the VSS pins of control chip U2；The control chip The GND pins ground connection of U2；The colelctor electrode of the audion VT4 is also connected with the P poles of diode D5；The audion VT5's Grounded collector；Two inputs of the diode rectifier U1 are collectively forming the input of control circuit.

To guarantee practical effect of the present utility model, the control chip U2 is that HCF4060 divides integrated chip.Institute Unidirectional thyristor VS is stated for TYN625 unidirectional thyristors.The diode rectifier U1 is 4 1N4004 silicon rectifier diode groups Into diode rectifier.

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

(1) this utility model can be suppressed or be eliminated to the harmonic wave in DC voltage, and when can load to DC voltage The instantaneous high current of generation is limited or adjusted, and makes DC voltage cleaner, more steady, defeated so as to improve this utility model Go out the stablizing effect of voltage, and can effectively prevent LED flash band from occurring continuous flicker in brightness flop, can be effectively Extend the service life of LED flash band, material resources has been saved well.

(2) this utility model can suppress to the drift of the frequency of electric current, make voltage and current held stationary, so that it is guaranteed that It is of the invention can the stable voltage and current of output.

(3) this utility model can to input voltage when the instant high-voltage that produces eliminated or suppressed, can effectively prevent Only this utility model backend electronics element and LED flash band are damaged by high voltage, so as to improve this utility model output electricity The stability of pressure.

Description of the drawings

Fig. 1 is overall structure diagram of the present utility model.

Specific embodiment

This 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, this utility model is mainly by diode rectifier U1, control chip U2, field effect transistor MOS, three poles Pipe VT1, audion VT2, audion VT3, audion VT4, audion VT5, unidirectional thyristor VS, resistance R1, adjustable resistance R2, Resistance R3, resistance R4, resistance R5, adjustable resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, Resistance R13, adjustable resistance R14, resistance R15, resistance R16, 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, polar capacitor C10, polarity electricity Hold C11, polar capacitor C12, Zener diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, Inductance L1, inductance L2, and inductance L3 are constituted.

To guarantee practical effect of the present utility model, the control chip U2 is that HCF4060 divides integrated chip.Institute Unidirectional thyristor VS is stated for TYN625 unidirectional thyristors.The diode rectifier U1 is 4 1N4004 silicon rectifier diode groups Into diode rectifier；Meanwhile, field effect transistor MOS is 04N03L field effect transistor；Audion VT1 be 3AX31 audions, three poles Pipe VT2~VT5 is 3DG06 audions；Resistance Rl is 500k Ω metalfilmresistors, and the resistance adjustable extent of adjustable resistance R2 is The resistance of 10~1000k Ω, resistance R3 is 3.3k Ω, and the resistance of resistance R4 is 4.7k Ω, and the resistance of resistance R5 is 200k Ω, electric The Standard resistance range of resistance R6 is the adjustable resistance of 20~200k Ω, and the resistance of resistance R7~R9 is 5k Ω, and the resistance of resistance R10 is The resistance of 100 Ω, resistance R11 is 15k Ω, the resistance of adjustable resistance R14 for the resistance of 10k Ω, resistance R12 and resistance R13 Range of accommodation is 2.2~10k Ω, and the resistance of resistance R15 is 16k Ω, and the resistance of resistance R16 is 20k Ω；Polar capacitor C1 and pole Property electric capacity C4 be the alminium electrolytic condenser of 1000 μ F/16V, the capacitance of polar capacitor C2 is 470 μ F/25V, the appearance of polar capacitor C3 It is worth for 8 μ F/25V, the capacitance of polar capacitor C5 is 100 μ F/25V, the appearance of polar capacitor C6, polar capacitor C7 and polar capacitor C8 Value is 10 μ F/16V, and the capacitance of polar capacitor C9 is for the capacitance of 200 μ F/50V, polar capacitor C10 and polar capacitor C11 The capacitance of 220 μ F/16V, polar capacitor C12 is 47 μ F/50V；Zener diode D1 be 1N4016 Zener diodes, diode D2 It is 1N4011 diodes with diode D3, diode D4 and diode D5 is 1N5406 diodes, and diode D6 is 1N4004 Diode；Inductance L1 and inductance L2 are the core inductance of 100 μ P/50Vd, and inductance L3 is the ring-shaped inductors of 100 μ P/25V.

During connection, the positive pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, negative pole and two poles The cathode output end of pipe commutator U1 is grounded after being connected.The N poles of Zener diode D1 Jing after resistance R1 with diode rectifier The cathode output end of U1 is connected, and P poles are connected with the cathode output end of diode rectifier U1.The positive pole Jing of polar capacitor C4 It is connected with the N poles of Zener diode D1 after inductance L1, negative pole is grounded after being connected with the colelctor electrode of audion VT1.Polarity electricity Hold C2 positive pole be connected with the cathode output end of diode rectifier U1, negative pole Jing after resistance R4 with the transmitting of audion VT1 Pole is connected.The P poles of diode D2 are connected with the cathode output end of diode rectifier U1, the transmitting of N poles and audion VT1 Pole is connected.The positive pole of polar capacitor C3 is connected with the P poles of diode D1, and negative pole is connected with the colelctor electrode of audion VT1. The N poles of diode D3 are connected with the emitter stage of audion VT1, P poles Jing after adjustable resistance R2 with the positive pole phase of polar capacitor C3 Connection.One end of resistance R3 is connected with the base stage of audion VT1, and the other end is connected with the P poles of diode D3.Resistance R5's One end is connected with the positive pole of polar capacitor C4, and the other end is connected with the VDD pins of control chip U2.

Wherein, the positive pole of polar capacitor C5 is connected Jing after adjustable resistance R6 with the base stage of audion VT2, negative pole with control The OSC1 pins of chip U2 are connected.The P poles of diode D4 are connected with the KEY pins of control chip U2, N poles and audion The base stage of VT2 is connected.One end of inductance L2 is connected with the OSC4 pins of control chip U2, and the other end is with audion VT2's Base stage is connected.The P poles of diode D5 are connected Jing after resistance R12 with the Q3 pins of control chip U2, N poles Jing resistance It is connected with the base stage of audion VT5 after R13.One end of resistance R11 is connected with the colelctor electrode of audion VT4, the other end with The colelctor electrode of audion VT3 is grounded after being connected.The positive pole of polar capacitor C6 is connected with the Q2 pins of control chip U2, negative pole It is connected with the base stage of audion VT4.The positive pole of polar capacitor C7 is connected Jing after resistance R9 with the Q1 pins of control chip U2, Negative pole is connected with the base stage of audion VT3.The negative pole of polar capacitor C8 is connected with the emitter stage of audion VT4, positive pole Jing It is connected with the emitter stage of audion VT3 after resistance R8.

Meanwhile, the positive pole of polar capacitor C9 is connected with the emitter stage of audion VT3, the control of negative pole and unidirectional thyristor VS End processed is connected.One end of resistance R10 is connected with the emitter stage of audion VT3, the emitter stage phase of the other end and audion VT5 Connection.One end of resistance R7 is connected with the anode of unidirectional thyristor VS, the other end and one of them of LED flash with LEDW Electrode is connected, and another electrode with LEDW is connected with LED flash for the P poles of the diode D3.The P poles of diode D6 It is connected with the VSS pins of control chip U2, N poles are connected Jing after resistance R16 with the source electrode of field effect transistor MOS.Polar capacitor The negative pole of C12 is connected Jing after resistance R15 with the P poles of diode D6, and positive pole is connected with the VSS pins of control chip U2.Pole The positive pole of property electric capacity C11 is connected Jing after adjustable resistance R14 with the P poles of diode D6, the source electrode phase of negative pole and field effect transistor MOS Connection.One end of inductance L3 is connected with the positive pole of polar capacitor C12, and the other end is connected with the grid of field effect transistor MOS.Pole The property positive pole of electric capacity C10 is connected with the P poles of diode D3, and negative pole is connected with the drain electrode of this new employee.

The source ground of field effect transistor MOS；The N poles of the diode D4 are also connected with the adjustable side of adjustable resistance R6 Connect；The grounded collector of the audion VT2, its emitter stage are connected with the VSS pins of control chip U2；The control chip The GND pins ground connection of U2；The colelctor electrode of the audion VT4 is also connected with the P poles of diode D5；The audion VT5's Grounded collector；Two inputs of the diode rectifier U1 are collectively forming the input of control circuit and are electrically connected with city Connect.

During work, diode rectifier U1 and polar capacitor C1 forms rectifier filter, and the 220V civil powers of input are rectified The diode rectifier U1 of wave filter carries out generating DC voltage after rectification, and polar capacitor C1 is then by the harmonic wave in raw DC voltage Eliminated, make DC voltage cleaner, the DC voltage after filtration is transferred to Zener diode D1, resistance R1, resistance R5, electricity The current-limiting circuit that sense L1 and polar capacitor C4 is formed, the instantaneous high current that the current-limiting circuit is produced when loading to DC voltage is carried out Limit, and electric current release is carried out by polar capacitor C4, make DC voltage more stable, DC voltage is carried out by current-limiting circuit Stable 6.8V DC voltages are obtained after current limliting, the 6.8V DC voltages are simultaneously transferred to control chip U2, polarity by current-limiting circuit The multi-resonant oscillating circuit that electric capacity C5, adjustable resistance R6, inductance L2 and diode D4 are formed, and the stable 6.8V DC voltages are same The running voltage of Shi Zuowei control chip U2.

When multi-resonant oscillating circuit is obtained it is electric after start to vibrate overcurrent, control chip U2 to multivibrator produce Oscillator signal carry out after frequency division counter, the control electricity of the Q1 pins and Q2 pins of control chip U2 and Q3 pin exporting changes It is flat, make the switching controller that audion VT3~VT5, resistance R9~R13 and polar capacitor C7~C9 formed audion VT3 and Audion VT4 and audion VT5 carry out the different electric current of interval conducting output, and the electric current then passes through unidirectional thyristor VS, pole Property electric capacity C9 and resistance R7 formed buffer circuit enter row buffering, make the electric current of output more stable, the buffered circuit be LED dodge Light light bar LEDW provides stable running voltage, and LED flash is with LEDW then according to the different electric currents frequency of switching controller output Rate carries out flashing.This utility model operationally, is adjusted by the resistance to adjustable resistance R6, can change LED sudden strains of a muscle The flicker frequency of light light bar LEDW.

Wherein, this utility model drifts about to prevent the DC voltage after vibrating from frequency occur, in the VSS of control chip U2 It is provided between pin and Q3 pins by field effect transistor MOS, it is polar capacitor C10, polar capacitor C11, polar capacitor C12, adjustable The voltage-regulating circuit that resistance R14, resistance R15, resistance R16, inductance L3 and diode D6 are formed, electricity during enforcement, after vibration The VSS pins output of control chip U2 is flowed through, the wave filter that polar capacitor C12 and resistance R15 is formed is carried out to the DC voltage Filtering, the low-order harmonic in DC voltage is eliminated, and makes DC voltage more steady, the DC voltage Jing adjustable electrics after filtration The actuator that resistance R14, resistance R16 and diode D6 are formed carries out the adjustment of electric current dead point frequency, effectively to the frequency of DC voltage Point drift is suppressed, and the DC voltage after adjustment is transferred to field effect transistor MOS by last actuator, and field effect transistor MOS is obtained Conduct, the drain electrode output voltage Jing polar capacitors C10 of field effect transistor MOS carries out energy of a charge storage and release, makes output Voltage is more stable, so as to the voltage-regulating circuit is effectively suppressed to the frequency drift of DC voltage, effectively improves The stability of the voltage of this utility model output.

Meanwhile, this utility model is in order to prevent diode rectifier U1 backend electronics element and LED flash band by voltage The instant high-voltage produced during input is damaged, therefore this utility model dodges in the cathode output end of diode rectifier U1 with LED It is provided between light light bar LEDW by audion VT1, polar capacitor C2, polar capacitor C3, diode D2, diode D3, adjustable The overvoltage crowbar that resistance R2, resistance R3 and resistance R4 are formed, when the cathode output end output voltage of diode rectifier U1 When generating high voltage, because adjustable resistance R2 is 10~1000k Ω high-impedance resistors, the resistance for changing adjustable resistance R2 just can High voltage is dammed, while polar capacitor C2 and polar capacitor C3 are started to charge up, in polar capacitor C2 and polar capacitor C3 Start to audion VT1 electric discharge during saturation, audion VT1 obtain it is electric after turn on, audion VT1 release voltages Jing resistance R3 and two poles 6.8V galvanic current pressures are exported after pipe D3, so as to the overvoltage crowbar can to input voltage when the instant high-voltage that produces Eliminated or suppressed, can effectively prevent this utility model backend electronics element and LED flash band from being damaged by high voltage, from And improve the stability of this utility model output voltage.

This utility model is produced by the way that the harmonic wave in DC voltage is suppressed or eliminated when loading to DC voltage Instantaneous high current limited or adjusted after, make DC voltage cleaner, more steady, so as to improve this utility model output The stablizing effect of voltage, therefore this utility model can effectively prevent LED flash band from occurring continuous flicker in brightness flop, The service life of LED flash band can effectively be extended, material resources has been saved well.

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

Claims (4)

1. a kind of LED flash band voltage-stabilizing and energy-saving control circuit, it is characterised in that main by diode rectifier U1, control Chip U2, field effect transistor MOS, audion VT1, audion VT2, audion VT3, audion VT4, audion VT5, unidirectional crystalline substance lock Pipe VS, positive pole is connected with the cathode output end of diode rectifier U1, the cathode output end of negative pole and diode rectifier U1 The polar capacitor C1 being grounded after being connected, N poles are connected Jing after resistance R1 with the cathode output end of diode rectifier U1, P poles The Zener diode D1 being connected with the cathode output end of diode rectifier U1, positive pole Jing after inductance L1 with Zener diode D1 N poles be connected, the polar capacitor C4 that negative pole is grounded after being connected with the colelctor electrode of audion VT1, positive pole and diode rectification The polar capacitor C2 that the cathode output end of device U1 is connected, negative pole is connected Jing after resistance R4 with the emitter stage of audion VT1, P The diode D2 that pole is connected with the cathode output end of diode rectifier U1, N poles are connected with the emitter stage of audion VT1, The polar capacitor C3 that positive pole is connected with the P poles of diode D1, negative pole is connected with the colelctor electrode of audion VT1, N poles and three poles The diode D3 that the emitter stage of pipe VT1 is connected, P poles are connected Jing after adjustable resistance R2 with the positive pole of polar capacitor C3, one end Be connected with the base stage of audion VT1, the resistance R3 that the other end is connected with the P poles of diode D3, one end and polar capacitor C4 Positive pole be connected, the resistance R5 that the other end is connected with the VDD pins of control chip U2, positive pole is Jing after adjustable resistance R6 with three The base stage of pole pipe VT2 is connected, the polar capacitor C5 that negative pole is connected with the OSC1 pins of control chip U2, P poles with control core The diode D4 that the KEY pins of piece U2 are connected, N poles are connected with the base stage of audion VT2, one end is with control chip U2's The inductance L2 that OSC4 pins are connected, the other end is connected with the base stage of audion VT2, P poles Jing after resistance R12 with control chip The diode D5 that the Q3 pins of U2 are connected, N poles are connected Jing after resistance R13 with the base stage of audion VT5, one end with After the colelctor electrode of audion VT4 is connected, the other end is connected with the colelctor electrode of audion VT3 be grounded resistance R11, positive pole with The polar capacitor C6 that the Q2 pins of control chip U2 are connected, negative pole is connected with the base stage of audion VT4, positive pole Jing resistance R9 Be connected with the Q1 pins of control chip U2 afterwards, the polar capacitor C7 that negative pole is connected with the base stage of audion VT3, negative pole and three The polar capacitor C8 that the emitter stage of pole pipe VT4 is connected, positive pole is connected Jing after resistance R8 with the emitter stage of audion VT3, just The polar capacitor C9 that pole is connected with the emitter stage of audion VT3, negative pole is connected with the control end of unidirectional thyristor VS, one end Be connected with the emitter stage of audion VT3, the resistance R10 that the other end is connected with the emitter stage of audion VT5, one end with it is unidirectional The anode of IGCT VS is connected, the P poles of the other end and diode D3 be collectively forming control circuit outfan resistance R7, P Pole is connected with the VSS pins of control chip U2, the diode that N poles are connected Jing after resistance R13 with the source electrode of field effect transistor MOS D6, negative pole is connected Jing after resistance R12 with the P poles of diode D6, the polarity that positive pole is connected with the VSS pins of control chip U2 Electric capacity C12, positive pole is connected Jing after adjustable resistance R14 with the P poles of diode D6, negative pole is connected with the source electrode of field effect transistor MOS The polar capacitor C11 for connecing, one end is connected with the positive pole of polar capacitor C12, the other end is connected with the grid of field effect transistor MOS Inductance L3, and the polar capacitor that positive pole is connected with the P poles of diode D3, negative pole is connected with the drain electrode of this new employee C10 is constituted；The source ground of field effect transistor MOS；The N poles of the diode D4 are also connected with the adjustable side of adjustable resistance R6 Connect；The grounded collector of the audion VT2, its emitter stage are connected with the VSS pins of control chip U2；The control chip The GND pins ground connection of U2；The colelctor electrode of the audion VT4 is also connected with the P poles of diode D5；The audion VT5's Grounded collector；Two inputs of the diode rectifier U1 are collectively forming the input of control circuit.

2. a kind of LED flash band voltage-stabilizing and energy-saving control circuit according to claim 1, it is characterised in that the control Coremaking piece U2 is that HCF4060 divides integrated chip.

3. a kind of LED flash band voltage-stabilizing and energy-saving control circuit according to claim 2, it is characterised in that the list It is TYN625 unidirectional thyristors to IGCT VS.

4. a kind of LED flash band voltage-stabilizing and energy-saving control circuit according to claim 3, it is characterised in that described two Pole pipe commutator U1 is the diode rectifier of 4 1N4004 silicon rectifier diodes compositions.