CN201138886Y

CN201138886Y - Energy-saving circuit for igniting light source

Info

Publication number: CN201138886Y
Application number: CNU2008200427967U
Authority: CN
Inventors: 黄其博
Original assignee: ZHONGSHAN HUATONG LIGHT SOURCE Ltd
Current assignee: ZHONGSHAN HUATONG LIGHT SOURCE Ltd
Priority date: 2008-01-07
Filing date: 2008-01-07
Publication date: 2008-10-22
Anticipated expiration: 2018-01-07

Abstract

The utility model discloses a circuit of energy-conserving light source of lighting. The technical key points of the device are that the device comprises a direct-current voltage regulator, an electronic switching circuit, a segmentation cycle controller, an asymmetric pulse oscillator, an LC resonance circuit and a lamp abnormity detection circuit; the direct-current voltage regulator provides a direct-current power supply; the output end of the segmentation circulation controller is connected with the electronic switch circuit and the asymmetric pulse oscillator to control the on-off of the electronic switch circuit, and the segmentation circulation controller outputs a signal to the asymmetric pulse oscillator to control the asymmetric pulse oscillator to oscillate; the output end of the electronic switching circuit is connected with the asymmetric pulse oscillator; the output end of the asymmetric pulse oscillator is connected with the LC resonance circuit, so that the lamp tube is ignited and works normally; the output end of the LC resonance circuit is connected with a lamp abnormity detection circuit. The utility model aims at providing a simple structure, low price, energy-conserving light source circuit in order to overcome the not enough of the too complicated, the high just power consumption of circuit structure of light source.

Description

A kind of circuit of energy saving light source igniting

[technical field]

The utility model relates to a kind of circuit of energy saving light source igniting.

[background technology]

Now fluorescent lamp, high-pressure sodium lamp, Metal halogen lamp or other light sources are increasingly extensive is used in average family or public place, and it has illuminated house, street, has beautified people's life.But the electric ballast volume of existing fluorescent lamp, high-pressure sodium lamp, Metal halogen lamp is big, Heavy Weight, components and parts are many, cost is high, not too suitable people's requirement; Have again, these light sources are do not stop luminous in the course of the work, there is not anything to be interrupted process bright or that go out, in fact, people's eyes are to bright in the very short time of lamp or to go out be imperceptible, and the actual effect of use is not influence also, and long-time continual luminous be unusual electricity wasting source, the light source that each city is so many is not difficult to calculate, and gets off for a long time and can cause great waste.

[utility model content]

The purpose of this utility model be too complicated for the circuit structure that overcomes existing light source, price is high and the deficiency of power consumption and a kind of simple in structure, the circuit of light sources that price is low, energy-conservation that provide.

In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposal:

A kind of circuit of energy saving light source igniting is characterized in that comprising direct current voltage regulator, electronic switching circuit, cuts apart cycle controller, asymmetry pulse oscillator, LC resonant circuit, lamp abnormal detection circuit;

The direct current voltage regulator output connects electronic switching circuit, asymmetry pulse oscillator, cuts apart cycle controller, LC resonant circuit, and DC power supply is provided;

Cut apart the cycle controller output and connect electronic switching circuit, asymmetry pulse oscillator, direct current voltage regulator, cut apart cycle controller and form the PFC active filter circuit together and export to electronic switching circuit after with AC power rectification, filtering, the break-make of control electronic switching circuit, cut apart cycle controller and output signal to the asymmetry pulse oscillator, the vibration of control asymmetry pulse oscillator;

The output of electronic switching circuit connects the asymmetry pulse oscillator, determines whether it works for the asymmetry pulse oscillator control signal;

The asymmetry pulse oscillator output end connects the LC resonant circuit; Asymmetry pulse oscillator vibration back produces alternating voltage, and alternating voltage makes the LC resonance, produces high-frequency ac voltage, is added to fluorescent tube is lighted and operate as normal;

LC resonant circuit output connects the lamp abnormal detection circuit; Lamp abnormal detection circuit output connects cuts apart cycle controller; The lamp abnormal detection circuit detects abnormal signal, offers to cut apart cycle controller, makes it send control command;

Aforesaid LC resonant circuit comprises the elementary winding of transformer L4, inductance L 5, capacitor C 7, C8, C9; Be parallel with a plurality of light sources between elementary winding of LC resonant circuit transformer L4 and the inductance L 5;

The aforesaid cycle controller of cutting apart comprises integrated package, and integrated package is L65 85;

Aforesaid direct current voltage regulator comprises capacitor C 1, C2, C3, transformer L1,4 diode D1, the elementary winding of transformer L2; Capacitor C 1, C2, C3, transformer L1 carry out filtering to external AC power; The bridge rectifier of 4 diode D1 compositions becomes direct current with filtered AC rectification;

Aforesaid asymmetry pulse oscillator comprises the elementary winding of transformer L3 and 4 secondary winding, metal-oxide-semiconductor T2, T21, T3, T31, fast recovery diode D6, D61, D7, D71, resistance R 4, R41, R5, R51;

Aforesaid electronic switching circuit comprises metal-oxide-semiconductor T1 and diode D10, metal-oxide-semiconductor T1 grid with cut apart the cycle controller output and be connected, the source electrode of metal-oxide-semiconductor T1 is connected with the positive pole of direct current voltage regulator output with diode D10, the grounded drain of metal-oxide-semiconductor T1, the negative pole of diode D10 is connected with the asymmetry pulse oscillator.

The utility model compared with prior art has following advantage:

1, L6585 has improved the brightness of lamp, has also reduced power consumption simultaneously, and meets relevant electric power safety and power consumption rules;

2, the characteristic of L6585 IC is the half-bridge frequency of warm-up time and the duration of ignition and each working stage of can independently programming; Therefore, this monolithic IC can be used for the fluorescent tube of number of different types;

3, L6585 IC implements the protection of high security to the PFC on the chip and half-bridge two parts; Except in igniting with normal work stage limits the voltage and current on the fluorescent tube, the overcurrent protection function of L6585 can also prevent that capacitive from appearing at the half-bridge part, with the reliability of further raising ballast;

4, L6585 also wants other multiple advantages, and for example, the overvoltage of PFC and feedback disconnection detection function can be closed IC, in case ballast is damaged; High linear multiplier device can be operated under the wide voltage source ballast, and total harmonic distortion (THD) is very low simultaneously;

5, this circuit makes light source take turns bright or goes out, and to illuminating effect without any influence, saved the energy greatly;

6, this circuit uses single integrated package, replaces numerous elements, and is simple in structure, and cost reduces, and luminescent properties is reliable.

[description of drawings]

Fig. 1 is a block diagram of the present utility model;

Fig. 2 is a circuit connection diagram of the present utility model.

[embodiment]

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

The utility model comprises direct current voltage regulator A, electronic switching circuit B, cuts apart cycle controller C, asymmetry pulse oscillator D, LC resonant circuit E, lamp abnormal detection circuit F.

Direct current voltage regulator A output connects electronic switching circuit B, asymmetry pulse oscillator D, cuts apart cycle controller C, LC resonant circuit E, and DC power supply is provided;

Cut apart cycle controller C output and connect electronic switching circuit B, asymmetry pulse oscillator D, direct current voltage regulator, cut apart cycle controller and form the PFC active filter circuit together and export to electronic switching circuit B after with AC power rectification, filtering, the break-make of control electronic switching circuit B, cut apart cycle controller C and output signal to asymmetry pulse oscillator D, control asymmetry pulse oscillator D vibration;

The output of electronic switching circuit B connects asymmetry pulse oscillator D, determines whether it works for asymmetry pulse oscillator D control signal;

LC resonant circuit output connects the lamp abnormal detection circuit; Lamp abnormal detection circuit output connects cuts apart cycle controller; The lamp abnormal detection circuit detects abnormal signal, offers to cut apart cycle controller, makes it send control command.

Direct current voltage regulator comprises capacitor C 1, C2, C3, transformer L1,4 diode D1, the elementary winding of transformer L2.Capacitor C 1, C2, C3, transformer L1 carry out filtering to external AC power; The bridge rectifier of 4 diode D1 compositions becomes direct current with filtered AC rectification.

Electronic switching circuit B comprises metal-oxide-semiconductor T1 and diode D10, metal-oxide-semiconductor T1 grid with cut apart cycle controller C output and be connected, the source electrode of metal-oxide-semiconductor T1 is connected with the positive pole of direct current voltage regulator A output and diode D10, the grounded drain of metal-oxide-semiconductor T1, the negative pole of diode D10 is connected with asymmetry pulse oscillator D.

Asymmetry pulse oscillator D comprises the elementary winding of transformer L3 and 4 secondary winding, metal-oxide-semiconductor T2, T21, T3, T31, fast recovery diode D6, D61, D7, D71, resistance R 4, R41, R5, R5 1.

LC resonant circuit E comprises the elementary winding of transformer L4, inductance L 5, capacitor C 7, C8, C9.Be parallel with a plurality of light sources between the M end of the elementary winding of LC resonant circuit transformer L4 and the N end of inductance L 5, light source can heat for resistor-type, and luminous light source etc. are such as fluorescent lamp.

Lamp abnormal detection circuit F comprises secondary winding, diode D8, D9, capacitor C 10, resistance R 11, the R12 of transformer L4.

The core of cutting apart cycle controller is integrated package U1, and the model of U1 is L6585.The power factor corrector (PFC) of L6585 integrated band half-bridge controller in a chip and driver and the logical circuit that all are relevant.(PFC is exactly the meaning of " power factor ", is mainly used to characterize the utilization ratio of electronic product to electric energy, and power factor is high more, illustrates that the utilization ratio of electric energy is high more.)

Direct current voltage regulator, cut apart cycle controller and form the PFC active filter circuit together and export to electronic switching circuit B after with AC power rectification, filtering, the direct current of PFC (DC) output voltage is input to 1 pin again after series resistance R18 and R19, series resistance R20 and R1 dividing potential drop behind diode D10.

10 pin of L6585 are used to import lamp and come off and detect and restart, will reset integrated package U1 and restart the secondary winding of 10 pin connection transformer L4 programmable time after of low-voltage.

18 pin of L6585 link to each other with the grid of metal-oxide-semiconductor T1 by resistance R 3, pfc circuit is formed the PFC active filter circuit with direct current voltage regulator in the L6585, the operating frequency of PFC active filter circuit depends on integrated package L6585 fully, can best realize that PFC is more than or equal to 0.99 power factor value, just allow the current waveform of electrical network input approach sine wave, and keep same-phase with the line voltage of importing.

R6, C11 are the current start element of L6585, connect 19 pin of L6585, an output of another termination bridge rectifier of R6.

The secondary winding of transformer L2 and diode D3 etc. are the power circuit of L6585, and the voltage of 19 pin that puts on L6585 is 15V.

(PWM a kind ofly carries out digitally coded method to analog signal level to the pwm pulse of the pin 16 of L6585, pin 17 outputs; By the use of high-resolution counter, modulated being used for of the duty ratio of square wave encoded to the level of a physical simulation signal.) produce the alternating current of near sinusoidal ripple by transformer L3 driven MOS pipe T2, T21, T3, T31; Inductance L 5, capacitor C 7 are formed the LC resonant circuit, produce high frequency voltage, and the two ends that add to fluorescent tube are lighted fluorescent tube, and after lighting, series resonance winding L 5 just plays metering function, and fluorescent tube is worked under normal voltage.Its operation principle is: the high voltage direct current inversion of direct current voltage regulator output is high-frequency ac and is used to light bulb and makes its reliably working.Operating frequency is by the resonance frequency decision of L6585, L6585 pin 16, pin 17 are connected on the elementary of pulse transformer L3, the end of the same name of the secondary output of pulse transformer L3 has guaranteed metal-oxide-semiconductor T2, T21, metal-oxide-semiconductor T3, T3 1 one after the other conducting, resistance R 4, R41, R5, R51 are the grid current-limiting resistances of metal-oxide-semiconductor T2, T21, T3, T31, and fast recovery diode D6, D61, D7, D71 are the reverse earial drainage diodes of metal-oxide-semiconductor T2, T21, T3, T31; Inductance L 5 is current limliting energy storage inductors of lamp, and capacitor C 7 is capacitances, and pulse transformer L3 is the driving pulse transformer of metal-oxide-semiconductor T2, T21, T3, T31.

The utility model can be used for CFL (electricity-saving lamp is compact fluorescent lamp again, be called for short CFL lamp) or T8, T4, straight-pipe fluorescent lamps such as T5, T12, is applicable to that also direct current is as power supply or resistor-type heating, luminous light source etc.

The utility model is a kind of method of energy saving light source igniting, and energy-conservation 1-6 doubly.According to the characteristic of light source, the frequency response time, nonlinear characteristic, the difference of the numerical value of the highest permission pulse current, energy-saving effect is also different.The utility model is to have utilized human eye to the inertia of light and the characteristic of light source, in one-period, carry out temporally cutting apart, distributing to being applied to direct voltage on the light source, generation is greater than the pulsating current of light source load current value, and making light source take turns conducting, it is relevant with the frequency response time of light source that it takes turns used time in cycle of conducting.

Claims

1. An energy-saving circuit for lighting a light source, characterized in that it comprises a DC voltage regulator (A), an electronic switch circuit (B), a split cycle controller (C), an asymmetrical pulse oscillator (D), and an LC resonant circuit ( E), light abnormality detection circuit (F);

The output terminal of the DC voltage regulator (A) is connected to the electronic switch circuit (B), the asymmetrical pulse oscillator (D), the split cycle controller (C), and the LC resonant circuit (E) to provide a DC power supply;

The output terminal of split cycle controller (C) is connected with electronic switch circuit (B), asymmetrical pulse oscillator (D), DC voltage regulator and split cycle controller together form PFC active filter circuit to rectify and filter AC power and output it Give the electronic switch circuit (B), control the on-off of the electronic switch circuit (B), divide the cycle controller (C) output signal to the asymmetrical pulse oscillator (D), control the asymmetrical pulse oscillator (D) to oscillate;

The output end of the electronic switch circuit (B) is connected to the asymmetric pulse oscillator (D), and a control signal is given to the asymmetric pulse oscillator (D) to determine whether it works;

The output end of the asymmetric pulse oscillator is connected to the LC resonant circuit; the asymmetric pulse oscillator generates AC voltage after oscillation, and the AC voltage resonates the LC resonant circuit to generate a high-frequency AC voltage, which is added to the lamp to ignite and work normally ;

The output end of the LC resonant circuit is connected to the lamp anomaly detection circuit; the output end of the lamp anomaly detection circuit is connected to the split cycle controller; the abnormal signal detected by the lamp anomaly detection circuit is provided to the split cycle controller to issue a control command.

2. An energy-saving circuit for lighting a light source according to claim 1, characterized in that said LC resonant circuit (E) includes a primary winding of a transformer (L4), an inductor (L5), and capacitors (C7, C8, C9) ; Multiple light sources are connected in parallel between the primary winding of the LC resonant circuit transformer (L4) and the inductor (L5).

3. An energy-saving circuit for igniting a light source according to claim 1, characterized in that the split cycle controller includes an integrated block (U1), and the integrated block (U1) is L6585.

4. An energy-saving circuit for lighting a light source according to claim 1, 2 or 3, characterized in that said DC voltage regulator includes capacitors (C1, C2, C3), a transformer (L1), 4 diodes ( D1), transformer (L2) primary winding; capacitors (C1, C2, C3), transformer (L1) filter the external AC power supply; a bridge rectifier circuit composed of four diodes (D1) rectifies the filtered AC power into direct current.

5. An energy-saving circuit for lighting a light source according to claim 1, 2 or 3, characterized in that the asymmetrical pulse oscillator (D) includes a transformer (L3) primary winding and 4 secondary windings, a MOS Tubes (T2, T21, T3, T31), fast recovery diodes (D6, D61, D7, D71), resistors (R4, R41, R5, R51).

6. An energy-saving circuit for lighting a light source according to claim 1, 2 or 3, characterized in that the electronic switch circuit (B) includes a MOS tube (T1) and a diode (D10), and the MOS tube (T1) The gate is connected to the output terminal of the split loop controller (C), the source of the MOS transistor (T1) is connected to the output terminal of the DC voltage regulator (A) and the anode of the diode (D10), and the drain of the MOS transistor (T1) is grounded , the cathode of the diode (D10) is connected with the asymmetric pulse oscillator (D).