CN201967228U

CN201967228U - Energy-saving electronic ballast of high voltage sodium lamp

Info

Publication number: CN201967228U
Application number: CN2010205221332U
Authority: CN
Inventors: 俞正国; 黄诗源
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2011-09-07
Anticipated expiration: 2020-09-08

Abstract

The utility model discloses an energy-saving electronic ballast of a high voltage sodium lamp, which belongs to ballast in electronic products. The energy-saving electronic ballast of the high voltage sodium lamp comprises of an EMI (electro-magnetic interference) filter circuit, a rectifier filter circuit, a drive circuit, a power correcting circuit, a start circuit, an overcurrent protection circuit and a resonant circuit. The biggest energy-saving characteristic of the electronic ballast is to employ constant power output; as the power factor reaches more than 0.99, the utilization rate of electric energies is greatly improved. As the start circuit is employed, the twinkling of the high voltage sodium lamp during the start moment is avoided, and the service life of the high voltage sodium lamp is prolonged. The energy-saving electronic ballast has less self-heating, and avoids hidden safety troubles brought by the self-heating of traditional inductance type ballast. When the voltage of a commercial power is boosted, the luminance of the high voltage sodium lamp is kept consistent all the time; therefore, not only the energy-saving effect is achieved, but also the service life of the high voltage sodium lamp is increased. The energy-saving electronic ballast has small size and light weight, and relates to a new energy-saving product which is convenient to install.

Description

A kind of high-pressure sodium lamp energy-saving electronic ballast

Technical field

The utility model relates to the ballast in the electronic product, a kind of specifically high-pressure sodium lamp energy-saving electronic ballast.

Background technology

At present, what high-pressure sodium lamp adopted is inductance type ballast, and its power factor often is lower than 0.5, and most electric energy scatters and disappears with the form of heat, has not only wasted a large amount of electric energy, and himself can generate heat and exist potential safety hazard.On the other hand, because the use of the inductance of inductance type electric ballast is the copper paint envelope curve, wasted a large amount of copper.Simultaneously, because the inductance type electric ballast is to adopt the LC mode of oscillation to start, during startup, lantern festival is glimmered, and not only itself is fragile, and influences the useful life of light fixture.Also therefore, when voltage raise, the power of inductance type ballast increased thereupon, electricity wasting not only, and influence life-span of high-pressure sodium lamp, and when voltage was low, inductance type ballast can trigger problems such as lighting high-pressure sodium lamp.

The utility model content

In order to overcome the deficiency of existing high pressure sodium lamp Inductive ballast technology, the purpose of this utility model is to provide a kind of employing permanent power output, can improve the utilance of electric energy, can increase the service life again, and the little lightweight high-pressure sodium lamp energy-saving electronic ballast of volume.

The utility model patent solves the technical scheme that its technical problem adopts: the high-pressure sodium lamp energy-saving electronic ballast that a kind of EMI of comprising filter circuit, current rectifying and wave filtering circuit, drive circuit, power factor correction circuit, start-up circuit, current foldback circuit, resonant circuit are formed is characterized in that:

1. EMI filter circuit:

Civil power 220V AC live wire is by protective tube F, be connected to an end of capacitor C 1, the other end of capacitor C 1 connects with the zero line of civil power, through common mode inductance T1 two ends, other two of common mode inductance T1 is connected to capacitor C 2 two ends, be connected to the end of capacitor C 3 and C4 again, the other end of C3 and C4 is linked together, and is connected to the contact of the earth.

2. current rectifying and wave filtering circuit:

Civil power links through the anodal end with capacitor C 5 of rectifier bridge D1 through behind the EMI filter circuit, again behind transformer T2, again through diode D2 to capacitor C 11, wherein the other end of the negative pole of rectifier bridge D and capacitor C 5 links to thermally.

3. drive circuit:

Through current rectifying and wave filtering circuit after the secondary end of transformer T2 connect over the ground, other end connecting resistance R15, the anode of another terminating diode D6 of resistance R 15, the negative electrode of D6 connects the anode of diode D9, the negative electrode of diode D9 connects with the positive pole of capacitor C 22, be connected to 1 pin of the U1 of integrated package, the negative pole of capacitor C 22 with link, 2 pin of integrated package U1 are connected with the positive pole of capacitor C 23, the minus earth of C23,3 pin of resistance R 43 1 termination integrated package U1, another termination R44 of R43 and with the positive pole of capacitor C 23, the anode of diode D10 links, the other end ground connection of R44, the negative electrode of diode D10 and voltage-stabiliser tube ZD2, the positive pole of capacitor C 24,1 pin of integrated package U4 links, the negative pole of the other end of voltage-stabiliser tube and capacitor C 24 links and is connected to ground, and 2 pin of integrated package are connection electrical resistance R42 over the ground, and 3 pin of integrated package U4 connect capacitor C 25 over the ground, the 4 pin ground connection of integrated package U4,6 pin and 8 pin of integrated package U4 connect capacitor C 26, and 5 pin of integrated package U4 connect the grid of Q3, and 7 pin of integrated package connect the grid of Q2.

4. circuit of power factor correction:

Resistance R 1, R2, after the R3 series connection, the end of R1 and the positive pole of capacitor filtering link, the other end of resistance R 3 connects with the ground of capacitor C 5, the positive pole of capacitor C 5 connects with an end of the elementary winding of transformer T2, the other end of the elementary winding of transformer T2 connects with the drain electrode of field effect transistor Q1,2 pin of integrated package U2 connect capacitor C 7 over the ground, the 3 pin connecting resistance R3 of integrated package U2 and the interface of capacitor C 6,4 pin of integrated package U2 connect capacitor C 8 over the ground, the end of 5 pin connecting resistance R5 of integrated package, one end of the secondary winding transformer of the other end of resistance R 5 and transformer T2 links, integrated package 6 pin ground connection, the end of integrated package 7 pin connecting resistance R6, the grid of another termination Q1 of R6,8 pin of integrated package connect and meet voltage-stabiliser tube ZD3 over the ground, capacitor C 10, C9, connect the negative electrode of diode D4, the end of the anode connecting resistance R4 of D4, resistance R 4 connects the positive pole of rectifier bridge, the drain electrode of field effect transistor Q1 connects the anode of diode D2, the negative electrode of D2 connects the positive pole of capacitor C 11, the minus earth of C11, the positive level of one termination capacitor C11 of resistance R 13, the other end connecting resistance R12 of R13, another termination R10 of resistance R 12, the other end ground connection of R10, a terminating resistor R12 of resistance R 11 and the interface of R10, another termination capacitor C 12 of resistance R 11, the collector electrode of triode Q4, the grounded emitter of the other end of capacitor C 12 and triode Q4.

5. start-up circuit:

Start-up circuit connects capacitor C 20 over the ground by the I pin of integrated package U3, the anode of another terminating diode D17 of 1 pin of U3, one end of resistance R 27,8 pin of another termination U3 of the negative electrode of diode D17 and resistance R 27,2 of U3,3 pin link, the 4 pin connecting resistance R16 of U3 and the point of contact of resistance R 18,5 pin and the capacitor C 19 of another termination U3 of resistance R 18, capacitor C 19 other end ground connection, the end of the 6 pin connecting resistance R22 of U3, another termination R21 of R22 and the drain electrode of field effect transistor Q6, another termination R21 of resistance R 21, the other end ground connection of R21, the 7 pin ground connection of U3,10 pin of U3 connect the negative electrode of diode D8, the anode of D8 connects 5 pin of U3,11 pin of U3 and 14 pin connecting resistance R29,13 pin of U3 connect capacitor C 18 over the ground, 14 pin of U3 connect capacitor C 21 over the ground, voltage-stabiliser tube ZD1,14 pin of U3 and 13 pin connecting resistance R30, resistance R 16 connects the base stage of triode Q5, and Q5 has an end of collector connecting relay drive coil, the other end of relay connects capacitor C 31 over the ground, connecting resistance R40, the negative electrode of another terminating diode D15 of R40, the anode of diode D15 connects 8 pin of integrated package U2.

6. current foldback circuit:

One end ground connection of induction by current coil, other end connecting resistance R41, connect the anode of diode D7, the negative electrode connecting resistance R28 of D7 and the tie point of resistance R 26, capacitor C 16 is connected with the negative electrode of diode D7,9 pin of another termination U3 of resistance R 28, one terminating resistor R25 of resistance R 26, capacitor C 17, the other end ground connection of resistance R 25, the other end ground connection of capacitor C 17, the base stage of resistance R 23 1 termination triode Q8, the source electrode of another termination field effect transistor Q6, the grounded emitter of Q8, the base stage of collector electrode connecting resistance R24 and triode Q9, the emitter of another termination triode Q9 of resistance, the emitter of triode Q9 connects 8 pin of integrated package U2.

7. resonant circuit:

The drain electrode of field effect transistor Q2 connects the positive pole of capacitor C 11, source electrode connects an end of capacitor C 28, one end of the elementary winding of another termination transformer T3 of C28, another termination high-pressure sodium lamp Lamp of transformer T3, an end of capacitor C 29, the other end ground connection of Lamp, the other end ground connection of capacitor C 29, the drain electrode of field effect transistor Q3 connects the source electrode of field effect transistor Q2, be connected to 6 pin of integrated package U4, connect capacitor C 27 over the ground.

The utility model electronic ballast of high voltage sodium lamp has:

1, this electric ballast has adopted permanent power output, is energy-conservation maximum characteristics.

2, because power factor reaches more than 0.99, improved the utilance of electric energy widely.

3, adopt start-up circuit, avoided the flicker of high-pressure sodium lamp startup moment, increased the life-span of high-pressure sodium lamp.

4, this electric ballast heating itself is few, has avoided traditional inductance type ballast owing to the potential safety hazard of itself generating heat and bringing.

5, when line voltage raises, the brightness of high-pressure sodium lamp remains unanimity, has not only reached energy-conservation effect, and has increased the life-span of high-pressure sodium lamp.

6, volume is little, and is in light weight, and easy for installation is the energy-conserving product of a new generation.

Description of drawings

Fig. 1 is a circuit structure view of the present utility model.

Fig. 1 comprises EMI filter circuit, current rectifying and wave filtering circuit, drive circuit, power factor correction circuit, start-up circuit, current foldback circuit, resonant circuit composition.

Embodiment

See also Fig. 1, this enforcement comprises the high-pressure sodium lamp energy-saving electronic ballast that EMI filter circuit, current rectifying and wave filtering circuit, drive circuit, power factor correction circuit, start-up circuit, current foldback circuit, resonant circuit are formed:

1) EMI filter circuit part: after the civil power 220V input, order is through capacitor C 1, common mode inductance T1, capacitor C 2 filtering differential mode interference, with C4 the common mode disturbances of civil power has been carried out filtering through capacitor C 3 again, reduced the interference of introducing, this ballast power factor is improved by civil power.

2) rectifying and wave-filtering part: this part is made up of single-phase full bridge D1, capacitor C 5, diode D2, capacitor C 11, behind the civil power process EMI filter circuit, after the rectifier bridge rectification, C5 carries out a filtering, behind capability correction transformer T2, D2 rectification C11 filtering again, the further high fdrequency component of filtering electrical network.

3) drive circuit: this part is by integrated package U1, U4, resistance R 42, R43, R44, and capacitor C 22, C23, C24, C25, C26, voltage-stabiliser tube ZD2, diode D10, D11, D12, D13 form.Behind the rectifying and wave-filtering; from the transformer secondary output of capability correction obtain voltage after U1 carries out three-terminal voltage-stabilizing through the ZD2 voltage stabilizing, C24 filtering is that special use drives integrated package U4 power supply; make the supply power voltage of integrated package U4 remain stable; simultaneously, diode D13 rectification, C26 filtering; make integrated package U4 produce the driving pulse of certain frequency; diode D12, D13 can filtering integrated package U4 moment the spike that produces, protection power tube Q2, Q3 do not damage power tube because drive spike.

4) power factor correction circuit: power factor correction circuit is by integrated package U2, capability correction transformer T2, voltage-stabiliser tube ZD3, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R10, R11, R12, R13, capacitor C 6, C7, C8, C10, C12, C11, diode D4, D2, triode Q4 forms, when line voltage raise, the secondary voltage of transformer T1 raise, through diode D2 rectification, capacitor C 11 filtering, the voltage that resistance R 10 is divided has also just raise, at this moment, and triode Q4 conducting, resistance R 11 is equivalent in parallel with R10, the Voltage Feedback of being divided of R10 arrives first pin of integrated package U2, thereby guarantees the 400V that is stabilized in of D2 rectification C11 filtering voltage, prepares for back semibridge system series resonance provides power supply.

5) start-up circuit: soft starting circuit is by integrated package U3, by capacitor C 14, C18, C19, C20, C21, C22, resistance R 16, R17, R18, R19, R21, R22, R27, R29, R30, R31, R32, voltage-stabiliser tube ZD1, diode D3, D17, formed soft starting circuit, through resistance R 31 current limlitings, after the ZD1 voltage stabilizing, C11 is filtered into integrated package U3 that stable voltage is provided, in the process of C20 charging, when the 1 pin voltage of U3 reaches certain value, drive triode Q5, drive the triggering part relay J and trigger high-pressure sodium lamp through R16.

6) current foldback circuit: this part is by current transformer B3, resistance R 23; R24; R41; R25; R26; R28, integrated package U3; capacitor C 17, diode D7; D8, field effect transistor Q6; triode Q8; Q9 is when high-pressure sodium lamp is worked, during as if the generation overcurrent; current transformer B3 feedback voltage increases greatly; make the D7 rectification, through C16 filtering, resistance R 25; R26 voltage raises; make the D8 conducting; at this moment, the 6th pin output low level of U3, the voltage of resistance R 20 is low level; triode Q8 ends; resistance R 24 is formed biasing circuit with triode Q9, the Q9 conducting, and Q9 directly drags down the supply power voltage of integrated package U2 over the ground; U2 is quit work, thereby play a protective role.

7) resonant circuit: this circuit is mainly by field effect transistor Q2, Q3, capacitor C 28, C29, transformer T3 form, after the relay moment conducting, produce instantaneous pressure at transformer T3 and capacitor C 29 ends, thereby light high-pressure sodium lamp, this moment, integrated package U4 drove field effect transistor Q2, Q3, made the resonant circuit work of being made up of C28 and transformer T3, high-pressure sodium lamp Lamp work.

Claims

1. high-pressure sodium lamp energy-saving electronic ballast that comprises that EMI filter circuit, current rectifying and wave filtering circuit, drive circuit, power factor correction circuit, start-up circuit, current foldback circuit, resonant circuit are formed is characterized in that:

1. EMI filter circuit:

Civil power 220V AC live wire is by protective tube F, be connected to an end of capacitor C 1, the other end of capacitor C 1 connects with the zero line of civil power, through common mode inductance T1 two ends, other two of common mode inductance T1 is connected to capacitor C 2 two ends, be connected to the end of capacitor C 3 and C4 again, the other end of C3 and C4 is linked together, and is connected to the contact of the earth;

2. current rectifying and wave filtering circuit:

Civil power links through the anodal end with capacitor C 5 of rectifier bridge D1 through behind the EMI filter circuit, again behind transformer T2, again through diode D2 to capacitor C 11, wherein the other end of the negative pole of rectifier bridge D and capacitor C 5 links to thermally;

3. drive circuit:

Through current rectifying and wave filtering circuit after the secondary end of transformer T2 connect over the ground, other end connecting resistance R15, the anode of another terminating diode D6 of resistance R 15, the negative electrode of D6 connects the anode of diode D9, the negative electrode of diode D9 connects with the positive pole of capacitor C 22, be connected to 1 pin of the U1 of integrated package, the negative pole of capacitor C 22 with link, 2 pin of integrated package U1 are connected with the positive pole of capacitor C 23, the minus earth of C23,3 pin of resistance R 43 1 termination integrated package U1, another termination R44 of R43 and with the positive pole of capacitor C 23, the anode of diode D10 links, the other end ground connection of R44, the negative electrode of diode D10 and voltage-stabiliser tube ZD2, the positive pole of capacitor C 24,1 pin of integrated package U4 links, the negative pole of the other end of voltage-stabiliser tube and capacitor C 24 links and is connected to ground, and 2 pin of integrated package are connection electrical resistance R42 over the ground, and 3 pin of integrated package U4 connect capacitor C 25 over the ground, the 4 pin ground connection of integrated package U4,6 pin and 8 pin of integrated package U4 connect capacitor C 26, and 5 pin of integrated package U4 connect the grid of Q3, and 7 pin of integrated package connect the grid of Q2;

4. circuit of power factor correction:

Resistance R 1, R2, after the R3 series connection, the end of R1 and the positive pole of capacitor filtering link, the other end of resistance R 3 connects with the ground of capacitor C 5, the positive pole of capacitor C 5 connects with an end of the elementary winding of transformer T2, the other end of the elementary winding of transformer T2 connects with the drain electrode of field effect transistor Q1,2 pin of integrated package U2 connect capacitor C 7 over the ground, the 3 pin connecting resistance R3 of integrated package U2 and the interface of capacitor C 6,4 pin of integrated package U2 connect capacitor C 8 over the ground, the end of 5 pin connecting resistance R5 of integrated package, one end of the secondary winding transformer of the other end of resistance R 5 and transformer T2 links, integrated package 6 pin ground connection, the end of integrated package 7 pin connecting resistance R6, the grid of another termination Q1 of R6,8 pin of integrated package connect and meet voltage-stabiliser tube ZD3 over the ground, capacitor C 10, C9, connect the negative electrode of diode D4, the end of the anode connecting resistance R4 of D4, resistance R 4 connects the positive pole of rectifier bridge, the drain electrode of field effect transistor Q1 connects the anode of diode D2, the negative electrode of D2 connects the positive pole of capacitor C 11, the minus earth of C11, the positive level of one termination capacitor C11 of resistance R 13, the other end connecting resistance R12 of R13, another termination R10 of resistance R 12, the other end ground connection of R10, a terminating resistor R12 of resistance R 11 and the interface of R10, another termination capacitor C 12 of resistance R 11, the collector electrode of triode Q4, the grounded emitter of the other end of capacitor C 12 and triode Q4;

5. start-up circuit:

Start-up circuit connects capacitor C 20 over the ground by the I pin of integrated package U3, the anode of another terminating diode D17 of 1 pin of U3, one end of resistance R 27,8 pin of another termination U3 of the negative electrode of diode D17 and resistance R 27,2 of U3,3 pin link, the 4 pin connecting resistance R16 of U3 and the point of contact of resistance R 18,5 pin and the capacitor C 19 of another termination U3 of resistance R 18, capacitor C 19 other end ground connection, the end of the 6 pin connecting resistance R22 of U3, another termination R21 of R22 and the drain electrode of field effect transistor Q6, another termination R21 of resistance R 21, the other end ground connection of R21, the 7 pin ground connection of U3,10 pin of U3 connect the negative electrode of diode D8, the anode of D8 connects 5 pin of U3,11 pin of U3 and 14 pin connecting resistance R29,13 pin of U3 connect capacitor C 18 over the ground, 14 pin of U3 connect capacitor C 21 over the ground, voltage-stabiliser tube ZD1,14 pin of U3 and 13 pin connecting resistance R30, resistance R 16 connects the base stage of triode Q5, and Q5 has an end of collector connecting relay drive coil, the other end of relay connects capacitor C 31 over the ground, connecting resistance R40, the negative electrode of another terminating diode D15 of R40, the anode of diode D15 connects 8 pin of integrated package U2;

6. current foldback circuit:

One end ground connection of induction by current coil, other end connecting resistance R41, connect the anode of diode D7, the negative electrode connecting resistance R28 of D7 and the tie point of resistance R 26, capacitor C 16 is connected with the negative electrode of diode D7,9 pin of another termination U3 of resistance R 28, one terminating resistor R25 of resistance R 26, capacitor C 17, the other end ground connection of resistance R 25, the other end ground connection of capacitor C 17, the base stage of resistance R 23 1 termination triode Q8, the source electrode of another termination field effect transistor Q6, the grounded emitter of Q8, the base stage of collector electrode connecting resistance R24 and triode Q9, the emitter of another termination triode Q9 of resistance, the emitter of triode Q9 connects 8 pin of integrated package U2;

7. resonant circuit: