CN1106604A - Fluorescent lamp energizing circuit - Google Patents
Fluorescent lamp energizing circuit Download PDFInfo
- Publication number
- CN1106604A CN1106604A CN94117199A CN94117199A CN1106604A CN 1106604 A CN1106604 A CN 1106604A CN 94117199 A CN94117199 A CN 94117199A CN 94117199 A CN94117199 A CN 94117199A CN 1106604 A CN1106604 A CN 1106604A
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- Prior art keywords
- circuit
- voltage
- lamp
- rectification
- signal
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
- H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
- H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
- H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
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- Circuit Arrangements For Discharge Lamps (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
An improved energizing circuit for starting and regulating a gaseous discharge lamp. The circuit is 100% solid state and does not require the use of any inductive components or any fil aments for its proper operation. The circuit is made up of several subcircuits including a rectifying/voltage-doubling circuit, a second multiplying circuit, a low power oscillating circuit and a high voltage amplifier circuit. A high frequency AC signal is used to ionize the gas and ignite the lamp, while a DC signal is generated by the circuit to keep the lamp illuminated once it is ignited. The size and weight of the integrated circuit ballast are such that it could be incorporated into the fluorescent lamp package itself.
Description
The present invention relates to a kind of exciting circuit of fluorescent-lamp-use, particularly a kind of ballasting circuit that just can make the gas ionization in the fluorescent lamp without filament or inductance element.
Ballasting circuit is used for the electric current of fluorescent lamp system with the stable supplying lamp.Ballast-free, because of the no resistance current limliting, fluorescent lamp can burn immediately; Should particularly point out, in a single day lamp is lighted and gas ionization wherein, and the impedance at lamp two ends just sharply descends.The additional function of ballasting circuit comprises: the appropriate voltage that starts fluorescent lamp is provided and reduces this voltage stable and light to keep lamp.
Most of ballasting circuit well known in the art all rely on use filament free electron is launched in the fluorescent tube into (by thermionic emission field emission or both in conjunction with) and make gas ionization in the lamp.Because these ballasts rely on the gas in filament ionization lamps, so such system makes the longevity of any used fluorescent lamp in the life-span of filament.Therefore, just whole lamp must be abandoned after the disintegration of filament.Change time and again these lamps except having to, abandon " burning " waste product that lamp produced and also cause serious ecological problem.These lamps contain the heavy metal element (as mercury) of meeting serious environment pollution, remove and handle the cost that these heavy metals will be paid costliness.
Though knownly in the prior art also can make lamp light (for example can be referring to the United States Patent (USP) 4,066 of Summa, 930 the 5th hurdles) without filament, such circuit is very expensive.For example, the Summa circuit requirement uses very special thereby also very expensive transformation device, and the purposes strictness of this transformer element is limited in the firing frequency rifle in order to test fluorescent lamp in factory.
In addition, the fluorescent lamp on nearly all present market all uses the AC(of different frequency to exchange) power supply lights lamp and makes lamp be maintained at illuminating state, maximum special case be those be contained in use the DC(direct current in the photocopier) lamp of power supply.Because alternating current makes the filament periodic duty inevitably, thereby can introduce unwanted endurance ratio, it shortens burn-out life, also makes the lifetime of whole lamp certainly.In addition, AC power supplies also brings-60Hz " flicker " (or flicker of the used frequency of AC power supplies), though it is not noticeable in this flicker of most of civilian occasions, but it may be extremely dangerous in industrial environment, and machine may also move under 60Hz or its integral multiple in industrial environment.For example, concerning running under 60Hz and by the color press operator of the fluorescent lighting of 60Hz, seem to seem that the controls of lathe is motionless.If the operator thinks that lathe has stopped and handle reaches in the lathe, then this situation can cause serious safety problem.Have, the stroboscopic filter of manufacturer's standard lamp has harmful biological action again, and this filter is illustrated in the background of invention of the United States Patent (USP) 4,260,932 of Johnson.
The existing ballast that uses the DC power supply in the prior art, and be used in the occasion that does not allow stroboscopic effect, eliminating stroboscopic effect.A this application is a photocopier, keeps electric current because light intensity and the ratio of time are proportional to, therefore to duplicating the quality favorable influence.Although this characteristic that needs is arranged, keeps fluorescent lamp lighting with DC power supply and have other problem.For example, when fluorescent lamp operation in constant following time of DC electric current, it can experience one specific " mercury migration " process.This phenomenon can cause its brightness irregularities of end to end from lamp.Early stage mercury transport phenomena in life-span of lamp has only very faint effect, but it finally can cause along the direction light intensity of lamp tangible difference being arranged.
Another problem that the fluorescent lamp that uses the DC electric current to power can meet is " anode melanism " effect of knowing.This effect is overheated the causing of anode of excessively bombarding the lamp that produces continuously because of electronics.This overheated meeting causes the destruction to the anode tap fluorescent material of lamp, causes with the power supply of DC electric current only just not luminous near the anode after several hours.
The solution mercury migration that this technical field adopted and the method for anode melanism problem comprise uses a switching circuit, makes the loss identical (each electrode has 50% time as anode) of each electrode of lamp by switching.This changing method helps to prevent the migration of fluorescent coating and the accumulation of anode place the inner surface of tube (bearing) electric charge.But, even these switching circuits also can produce other problem, such as: the too high cost of circuit when the significantly arc discharge (thereby cause misoperation and whole system is shut down) of power consumption, used electromechanical relay, and consideration is used for other purposes.
Another shortcoming of current ballast is to use inductive element, and inductive element makes system effectiveness low and stop and further circuit is dwindled into a slice chip.Coil and transformer generally are used for raising lights voltage, uses them can bring the unnecessary loss that is caused by internal resistance, magnetic hysteresis and eddy current.In addition, these inductive elements also can produce unwanted electronic noise and to the interference of radiofrequency signal and computer network.
Therefore, electronic ballast circuit of the present invention provides the improvement of a series of novelties, when these being improved the comprehensive problem that will solve above-mentioned this field prior art to a time-out.
In most preferred embodiment, the present invention includes following electronic circuit:
A) rectification/voltage-multiplying circuit, it exports about 2 by the power supply of electrical network AC power supplies
The floating voltage of 2Ein;
B) second booster circuit, it also by the power supply of electrical network AC power supplies, receives the output of rectification/voltage-multiplying circuit, then the floating voltage that is used for lighting lamp is brought up to about 3
2Ein.
C) filter capacitor, it links to each other with the output of rectification/voltage-multiplying circuit, the ripple that filtering is caused by the electrical network AC power supplies;
D) low-power oscillating circuit (as 25KHz), it links to each other with the output of rectification/voltage-multiplying circuit, and is in parallel with filter capacitor; And
E) high-voltage amplifier circuit, it receives the signal of second booster circuit and low-power oscillating circuit, send electricity so that light rapidly and easily to lamp at last.
According to the present invention, the photoelectric emission principle is used in lighting of lamp, rather than thermionic emission or field emission.When doing like this, the lamp of desiring to light does not need filament.By fully phasing out the needs to filament, the life-span of lamp can prolong widely.The life-span of lamp only depends on whether the gas in the lamp leaks, and the now, gas leakage may be after 15 years in many cases now.
In addition, lighted the cheap circuit that the back just powers with the direct current street lamp in case the invention provides a kind of lamp.In civilian obviously energy-conservation, use DC power supply fully flicker-freely to carry out work, make the present invention can be used for photocopier and other does not allow to use the occasion of fluctuation light source.Similarly, keep the necessary minimum value of lighting of lamp by the electronics of anode and ion bombardment amount are limited in, ballasting circuit of the present invention has solved the problem of the direct current supply lamp such as anode melanism and mercury migration.
At last, the present invention need not any inductive element.This makes and can make ballasting circuit with the form of integrated circuit, thereby its size and weight are reduced to and can be contained in this circuit in the lamp.The production system of fluorescent lamp that can be special like this, and unrestricted mounting means is provided.In addition, by not using inductance element, eliminated fully and used the caused loss of coil and other shortcoming in the ballast.
Therefore, general purpose of the present invention is to light fluorescent lamp economically and do not need to use filament ionization, thereby does not in fact need to change lamp.
In addition, an object of the present invention is to use direct current to keep lighting of gaseous discharge lamp economically, thereby eliminate the interchange effect of flicker and make the energy consumption minimum of lamp.
Another object of the present invention provides the solid-state integrated of whole ballasting circuit and does not use any inductance element.
Have, an attached purpose of the present invention provides the use direct current of an economy and does not need the ballast of expensive switching circuit again.
A relevant purpose of the present invention provides an improved integrated circuit ballast, and it has such size and weight characteristic, so that can be contained in it in the fluorescent lamp.
By following detailed description, accompanying drawing and appended claims, concerning persons skilled in the art, it is more obvious that further object of the present invention and advantage will become.
Fig. 1 is an interconnective circuit block diagram between each major part of expression the present invention.
Fig. 2 is square 2(rectifier/voltage multiplie among Fig. 1) and square 3(booster circuit) circuit diagram.
Fig. 3 is a square 4(low-power oscillator among Fig. 1) circuit diagram.
Fig. 4 is a square 5(amplifier among Fig. 1) circuit diagram.
Fig. 5 is the complete circuit theory diagrams of ballasting circuit of the present invention.
Notice that these accompanying drawings are not necessarily proportional, and embodiment with dashed lines and schematic diagram are represented sometimes.In some cases, can omit those to understand the present invention unnecessary or other details inconspicuous.Certainly, should see, the invention is not restricted to specific embodiment described herein.
See Fig. 1 earlier, being electrically connected between the main block diagram part of the whole invention of its expression formation.As shown in the figure, the electrical network AC power supplies is to rectifier/voltage multiplie 2 and booster circuit 3 power supplies.In the ignition phase of lamp 6, booster circuit 3 plays stepup transformer.Booster circuit 3 and low-power oscillator 4 are sent in the output of rectifier/voltage multiplie 2 to.Then, the output of booster circuit 3 and low-power oscillator 4 enters amplifier 5, and amplifier 5 is to lamp 6 power supplies.Concerning the operate as normal of fluorescent lamp, the present invention divides two stages to work basically.At first, it lights gaseous discharge lamp with high frequency/high-voltage signal.The second, in case lamp has been lighted, just switch to direct current, by direct current lamp is maintained at state stable, that light.
Refer now to Fig. 2, it has shown the details of rectifier/voltage multiplie 2 and booster circuit 3.Rectifier/voltage multiplie 2 is made up of diode 9,10,11,12 and electric capacity 13,14.When grid alternating current source 1 powered to entire circuit with voltage Ein, rectifier/voltage multiplie 2 was 2 at node 200 place's output voltages
2Ein also has the direct current of the 60Hz ripple that is caused by grid alternating current source 1.Electric capacity 19 is used for the 60Hz ripple in this signal of filtering before the signal from rectifier/voltage multiplie 2 enters low-power oscillator 4.The output of rectifier/voltage multiplie 2 links to each other with booster circuit 3 at node 200 places.Booster circuit 3 is lifted to 3 to the voltage that is used for lighting lamp 6 at node 300 places
2Ein.Booster circuit 3 charges rapidly through diode 18 and 16 by the negative half-cycle chien shih electric capacity 15 in grid alternating current source 1 and raises the supply power voltage of a little lighting a lamp.Therefore this be grid alternating current source 1 negative half period (
2Ein) and the magnitude of voltage (2 at node 300 places
Rheobase 2Ein), electric capacity 15 is charged to 3
2Ein, when through zero point in cycle, electric capacity 15 by resistance 17 bleed off deposited 3
2Ein, resistance 17 provides minimum electric current in ignition phase, and the pressure drop at its two ends can be ignored, and is 3 thereby provide numerical value effectively at node 300
The voltage of 2Ein.
Fig. 3 represents the circuit diagram and the electric component of low-power oscillator 4, and it comprises transistor 26,27, electric capacity 24,25 and resistance 21,22,23,20.Low-power oscillator 4 is a square-wave oscillator, the filtered direct current signal (2 in its receiving node 200 places
2Ein), in node 400 outputs 2
The 25KHz high-frequency signal of 2Ein.This output is 0 and 2
Swing between the 2Ein, thereby on average be output as
2Ein.
Fig. 4 represents amplifier 5, and it comprises electric capacity 28,29,30,31 and diode 32,33,34,35.Amplifier 5 is with the output of node 300(booster circuit 3) to locate voltage be 3
The signal of 2Ein and from the output of node 400(low-power oscillator 4) 25KHz be input with signal frequently.Amplifier 5 receives the average voltage 2 of these two signals
2Ein also amplifies by multiplication factor G.To specific amplifier 5 shown in Figure 4, the value of G equals 4, is 8 thereby produce voltage
2Ein(deducts loss), frequency is the signal of 25KHz.At node 500 this signal is sent into lamp 6 then, it makes gas ionization wherein and lights lamp.Owing to light the photoelectric emission that only depends on ion, and do not rely on thermionic emission and field emission, thereby in the lamp filament needn't be arranged.Light lamp and keep lamp that to light needed all parts be exactly a conductor, this conductor preferably is positioned at each end of lamp, and it closely contacts with gas in the lamp.
Refer now to Fig. 5, can see whole ballasting circuit.In case lamp 6 is lighted, its impedance just sharply descends, and makes entire circuit switch to direct current by the high frequency points light current and keeps electric current (being used for keeping the electric current that lamp is lighted).For carrying out this switching, following variation appears in the circuit automatically.The reduction of lamp 6 impedances has increased the electric current that flows through entire circuit immediately.The increase of this electric current further reduces the voltage at electric capacity 37 two ends, and it greatly reduces the voltage (Ein) of supply rectifier/voltage multiplie 2, has finally reduced the voltage of supplying with low-power oscillator 4.The reduction of this voltage reaches the quit work value of (being the failure of oscillations) of low-power oscillator 4. Electric capacity 13 and 14 dielectric loss increase, thereby make these elements can not keep its electric charge and reach " twice " of above-mentioned voltage.This situation further reduces the voltage of node 200.This effect makes direct current flow through node 400, and electric capacity 28 two ends open circuit is isolated amplifier 5 and low-power oscillator.Simultaneously, the electric current in the circuit is increased, the voltage drop at resistance 17 two ends in the booster circuit 3 becomes enough greatly, thereby makes the voltage at node 300 places be lower than the voltage (2 at node 200 places
2Ein).This pressure reduction makes diode 18 forward bias, and this makes the direct current output stream at node 200 places cross diode 18 again and flows into amplifier 5.Because this electric current is a direct current, thus electric capacity 29,30 and 31 open circuits, make direct current flow through diode 32,33,34,35 like this, flow to lamp 6 then, keep electric current thereby provided direct current.
Following table has provided the numerical value of employed circuit element in the ballasting circuit of the present invention.This specific ballasting circuit best and the fluorescent lamp of 40W and the supporting use of AC power of 120V, 60Hz.All diodes all are the LN4004 types, and two triodes (26 and 27) are the C2611 type.
With top configuration, light lamp 6 desired power and be lower than 1 watt.It mainly is because low-power oscillator 4 meets high impedance load at its output that this minimal power requires, and makes the supply current can very little (being approximately 8 milliamperes) like this.In case lamp 6 is lighted, direct current is kept electric current and just is increased to about 200 milliamperes, and the voltage at rectifier/voltage multiplie 2 two ends is reduced to about 27 volts by about 116 volts.This reduction causes keeping voltage
Or about 75 volts.Therefore, and will consume 50 to 60 watts and keep lamp and light the conventional Bollast system of (using alternating current) and compare, ballasting circuit of the present invention only needs 24 to 27 watts.
By being limited in and keeping lamp and light required minimum value, the invention solves anode melanism and mercury migration problem keeping electric current.No. the 4th, 260,932, Johnson(United States Patent (USP)) thinks that electric charge accumulation that the non-directional electric current causes depends on the value (density of electronics and anion) of electric current in the speed of electronics and anion in the lamp and the lamp.The speed of charged electronics and ion depends primarily on the discharge length (this has determined the time that electronegative particle is accelerated) of lamp and the accelerating voltage (operating voltage) of lamp again.Under situation of the present invention, used electric current is restricted to minimum to the bombardment of electronics and ion, thereby lamp can be recovered from the trace migration in the time that it is closed.
Be to be understood that, above described embodiment be used for explanation rather than limit of the present inventionly, under the situation that does not exceed the scope of the invention that claims determine, can carry out a large amount of modifications.In fact, element is made a small amount of change so that this ballast is used for other gaseous discharge lamp such as high pressure sodium vapour lamp also within the present invention.
In conjunction with most preferred embodiment some details of the present invention is illustrated, concerning one of ordinary skill in the art, clearly can within clearly disclosed principle and scope, makes amendment and replace with reference to accompanying drawing.Therefore, scope of the present invention is limited by the back appended claims fully, rather than is limited by any specific word in the explanation of front.
Claims (11)
1, the matching used ballasting circuit of a kind of and gaseous discharge lamp, it comprises:
(a) light the device of gas in the lamp, this device does not use perceptual electric component and thermion or field emission filament; And
(b) keep the luminous device of lamp.
2, the said ballasting circuit of claim 1 is characterized in that the said device of lighting gas uses alternating current.
3, the said ballasting circuit of claim 2 is characterized in that the said luminous device of lamp of keeping uses direct current.
4, the said ballasting circuit of claim 2 is characterized in that the said device of lighting gas comprises: rectification/voltage amplifier circuit, low-power oscillating circuit and high-voltage amplifier circuit.
5, a kind ofly be used for lighting gaseous discharge lamp and make it continuously luminous ballasting circuit, its work does not need to use any perceptual electric component or any filament, and this circuit comprises:
(a) the supply power voltage signal from AC power is carried out the device of rectification/boost;
(b) be used for the device of the a-c cycle ripple in the supply power voltage signal of filtering rectification/after boosting;
(c) be used for receiving the supply power voltage signal of said rectification/after boosting and export the device of high-frequency signal; And
(d) amplify the said rectification/supply power voltage signal after boosting and the mean value of said high-frequency signal to light the device of gaseous discharge lamp.
6, the said ballasting circuit of claim 5, it also comprises:
(a) in case lamp is just reduced the device of said supply power voltage signal after lighting; And
(b) keep the luminous device of lamp with direct current.
7, the said ballasting circuit of claim 6, it is characterized in that the said device that is used for the supply power voltage signal from AC power is carried out rectification/boost also comprises rectification/voltage-multiplying circuit and booster circuit, said rectification/voltage-multiplying circuit receives from the supply power voltage Ein of AC power and output and is approximately 2
The first floating voltage signal of 2Ein, said booster circuit then receive and saidly come first floating voltage of self-rectifying/voltage-multiplying circuit and output to be about 3
The second floating voltage signal of 2Ein.
8, the said ballasting circuit of claim 7, the device that it is characterized in that the supply power voltage signal of said reception rectification/after boosting and export high-frequency signal also comprises the low-power oscillating circuit that is connected between said rectification/voltage-multiplying circuit output, the high-frequency signal of said low-power oscillating circuit output 2Ein.
9, the said ballasting circuit of claim 8, it is characterized in that the said amplification rectification/supply power voltage signal after boosting and the mean value of high-frequency signal also comprise a high-voltage amplifier circuit with the device of lighting gaseous discharge lamp, this circuit receives from the second floating voltage signal of booster circuit with from the high-frequency signal of low-power oscillating circuit and be averaged voltage, and it multiply by this average voltage to obtain 2G with coefficient G
The high-frequency amplifier output signal of 2Ein is so that light gaseous discharge lamp.
10, a kind of improved ballasting circuit, this circuit are lighted gaseous discharge lamp and are made it continuously luminous, do not need to use any perceptual electric component or filament, and this circuit comprises:
(a) rectification/voltage-multiplying circuit, it receives the supply power voltage Ein from AC power, and this rectification/voltage-multiplying circuit output is about 2
The first floating voltage signal of 2Ein;
(b) by the booster circuit of ac power supply, this booster circuit receives and saidly comes the first floating voltage signal and the output of self-rectifying/voltage-multiplying circuit to be about 3
The second floating voltage signal of 2Ein;
(c) be connected in filter capacitor between rectification/voltage-multiplying circuit output, said filter capacitor is used for the a-c cycle ripple in the said first floating voltage signal of filtering;
(d) low-power oscillating circuit, it is connected between rectification/voltage-multiplying circuit output, and in parallel with said filter capacitor, said low-power oscillating circuit output 2
The high-frequency signal of 2Ein;
(e) high-voltage amplifier circuit, its receives from the second floating voltage signal of booster circuit with from the high-frequency signal of low-power oscillating circuit and ask average voltage, and said amplifying circuit multiply by said average voltage to obtain 2G with coefficient G
The high-frequency amplifier output signal of 2Ein is lighted gaseous discharge lamp;
(f) be connected in the triggering electric capacity of AC power, in case lamp is lighted, when detecting electric current and increase, this triggering electric capacity reduces supply power voltage Ein greatly; And
(g) direct current is kept electric current, and after lamp was lighted, the said electric current of keeping was powered to lamp.
11, the said ballasting circuit of claim 10, it is characterized in that said booster circuit also has a resistance and a diode, in case lamp is lighted, when detecting the electric current increase, said resistance is set up a voltage drop that increases, said voltage drop makes said diode forward biasing, thereby makes direct current flow through the output of said booster circuit; Wherein said amplifier circuit multiply by said average voltage to obtain 2G with coefficient G
The high-frequency amplifier output signal of 2Ein is so that light gaseous discharge lamp, and after lamp was lighted, said amplifier circuit made the direct current from booster circuit flow through its output and enters in the said lamp.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CO93414977A CO4180415A1 (en) | 1993-10-21 | 1993-10-21 | METHOD FOR LIGHTING FLUORESCENT LAMPS WITH OR WITHOUT FILAMENT |
| CO93414977 | 1993-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1106604A true CN1106604A (en) | 1995-08-09 |
Family
ID=5331354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94117199A Pending CN1106604A (en) | 1993-10-21 | 1994-10-21 | Fluorescent lamp energizing circuit |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0650312B1 (en) |
| JP (1) | JPH07263153A (en) |
| KR (1) | KR100233693B1 (en) |
| CN (1) | CN1106604A (en) |
| AT (1) | ATE194747T1 (en) |
| BR (1) | BR9404212A (en) |
| CO (1) | CO4180415A1 (en) |
| DE (1) | DE69425217D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100525570C (en) * | 2004-11-16 | 2009-08-05 | 蒋中为 | Rapid starter for gas discharge lamp |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680016A (en) * | 1994-08-24 | 1997-10-21 | Valcke; Francisco Javier Velasco | Transformerless electronic ballast for gaseous discharge lamps |
| IT1282910B1 (en) * | 1995-03-22 | 1998-04-01 | Lucio Falace | CAPACITIVE REACTOR, PARTICULARLY SUITABLE FOR POWERING FLORESCENT TUBES, OR ANY USER, CAUSING |
| CA2285378A1 (en) * | 1997-07-25 | 1999-02-04 | Jorge M. Parra | Low-voltage non-thermionic ballast-free fluorescent light system and method |
| AU2022294325A1 (en) * | 2021-06-17 | 2024-02-01 | Narsimha Chary Mandaji | A device with customized integrated electronic circuit for destroying pathogens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2645393B3 (en) * | 1989-04-03 | 1991-07-05 | Ferrero Alexandre | SELF-CONTAINED LIGHTING DEVICE WITH GAS DISCHARGE TUBE |
-
1993
- 1993-10-21 CO CO93414977A patent/CO4180415A1/en unknown
-
1994
- 1994-10-11 DE DE69425217T patent/DE69425217D1/en not_active Expired - Lifetime
- 1994-10-11 AT AT94202932T patent/ATE194747T1/en not_active IP Right Cessation
- 1994-10-11 EP EP94202932A patent/EP0650312B1/en not_active Expired - Lifetime
- 1994-10-19 JP JP6278541A patent/JPH07263153A/en active Pending
- 1994-10-20 KR KR1019940026892A patent/KR100233693B1/en not_active IP Right Cessation
- 1994-10-21 CN CN94117199A patent/CN1106604A/en active Pending
- 1994-10-21 BR BR9404212A patent/BR9404212A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100525570C (en) * | 2004-11-16 | 2009-08-05 | 蒋中为 | Rapid starter for gas discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9404212A (en) | 1995-06-27 |
| JPH07263153A (en) | 1995-10-13 |
| EP0650312B1 (en) | 2000-07-12 |
| EP0650312A3 (en) | 1996-03-20 |
| DE69425217D1 (en) | 2000-08-17 |
| ATE194747T1 (en) | 2000-07-15 |
| KR960016643A (en) | 1996-05-22 |
| CO4180415A1 (en) | 1995-06-07 |
| KR100233693B1 (en) | 1999-12-01 |
| EP0650312A2 (en) | 1995-04-26 |
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