CN107318209A - A kind of high-low pressure firing circuit for metal halogen lamp electric ballast - Google Patents
A kind of high-low pressure firing circuit for metal halogen lamp electric ballast Download PDFInfo
- Publication number
- CN107318209A CN107318209A CN201710566557.5A CN201710566557A CN107318209A CN 107318209 A CN107318209 A CN 107318209A CN 201710566557 A CN201710566557 A CN 201710566557A CN 107318209 A CN107318209 A CN 107318209A
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- China
- Prior art keywords
- resistance
- halogen lamp
- electric capacity
- metal halogen
- low pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/08—High-leakage transformers or inductances
- H01F38/10—Ballasts, e.g. for discharge lamps
Abstract
The invention discloses a kind of high-low pressure firing circuit for metal halogen lamp electric ballast, including low pressure resonance circuit, high-tension ignition circuit and control circuit.Low pressure resonance circuit connects the half-bridge output of metal halogen lamp electric ballast, high-tension ignition circuit connects low pressure resonance circuit, control circuit connects high-tension ignition circuit, and low pressure resonance circuit is used to providing more than 2kV in cold conditions lighting and puts modulating voltage, and provides triggering level for high-tension ignition circuit when hot；High-tension ignition circuit is used for offer more than the 20kV high pressures in hot lighting and lighted a fire；Control voltage is used to produce control Automatic level control high-tension ignition circuit by sample bus voltage.The present invention can both ensure at once to restart after civil power is unstable or maloperation causes lamp to extinguish, and accumulation of the single high pressure lighting to lamp tube electrode can be avoided to damage again.
Description
Technical field
The present invention relates to metal halogen lamp electric ballast, more particularly to a kind of height pressure point for metal halogen lamp electric ballast
Ignition circuit.
Background technology
Metal halogen lamp is the abbreviation of metal halide lamp.Metal halogen lamp is a kind of in mercury and the halide mixed vapour of rare metal
Middle to produce the luminous discharge lamp of arc discharge, metal halide lamp is that various metal halide systems are added on the basis of high-pressure sodium lamp
Into third generation light source.Metal halogen lamp has the advantages that luminous efficiency is high, color developing is good, long lifespan, is a kind of close to color of sunshine
Energy-conservation new light sources, be widely used in stadiums, exhibition center, megastore, industrial premises, street square, station, harbour
Deng the room lighting in place.
Filled with a small amount of metal halide and gas in Metal halogen lamp, it was roughly divided into for three stages from normal luminous is triggered to. 1.
The triggering stage：Without filament in metal halide lamp, only two electrodes can not directly be lighted plus operating voltage, it is necessary to first plus
High pressure makes gas ionization in lamp.High pressure is produced by dedicated trigger device.2. catch fire the stage：After bulb triggering, the discharge voltage of electrode
Electrode is further heated, glow discharge is formed, and create conditions for arc discharge.3. the normal luminous stage：In glow discharge
Under effect, electrode temperature more and more higher, the electron amount of transmitting is more and more, and arc discharge is transitioned into rapidly.As temperature is entered
One step is raised, lamp it is luminous more and more tetanic to normal, all processes take longer.
Metal halogen lamp air pressure inside in cold conditions is relatively low, as long as electrode two ends reach that more than 2kV voltages can ensure igniting.And
During hot starting, hot start, because air pressure inside is higher, more than 20kV voltages are needed preferably to start.Therefore for general low pressure point thermoelectricity
Road is, it is necessary to which hot delay protection function, makes lamp carry out lighting again after cooling down.Another method is all the time with more than 20kV high pressures
Lighting, but multiple high pressure spot lantern festival for current Metal halogen lamp technique causes cumulative bad to damage lamp tube electrode so that golden halogen
The lamp life-span declines.
The content of the invention
The technical problems to be solved by the invention are to be directed to defect involved in background technology to be used for gold there is provided one kind
The high-low pressure firing circuit of halogen lamp electric ballast, to improve the reliability and convenience of Metal halogen lamp.
The present invention uses following technical scheme to solve above-mentioned technical problem：
The present invention provides a kind of Metal halogen lamp high-low pressure firing circuit, makes the cold conditions of Metal halogen lamp under normal conditions using circuit is controlled
Lighted a fire during lighting with voltage relatively low 2kV or so, and more than 20kV high pressure spot is switched to when the hot extinguishing of lamp is restarted at once
Fire, to ensure in the case of less to electrode damage, lamp can be lit at any time under any circumstance.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of high-low pressure firing circuit for metal halogen lamp electric ballast, including first to fourth electric capacity, resonant inductance, transformation
Device, discharge tube, first resistor, control signal generation module and control pipe；
The half-bridge output of the termination of first electric capacity one metal halogen lamp electric ballast, the other end is connected with one end of resonant inductance；
One end, the one end of transformer secondary coil of the other end of the resonant inductance respectively with the second electric capacity are connected；
One end, the one end of transformer of the other end of second electric capacity respectively with the 3rd electric capacity are connected；
The other end of the transformer secondary coil is connected with one end of Metal halogen lamp, the other end of transformer and described
One end of discharge tube is connected；
One end, the one end of the 4th electric capacity of the other end of the discharge tube respectively with the first resistor are connected；
The grid of the control pipe is connected with the output end of the control signal generation module, the drain electrode of control pipe respectively with it is described
The other end of first resistor, the other end of the 4th electric capacity are connected, the source electrode of the control pipe other end respectively with the 3rd electric capacity,
Ground, the other end of Metal halogen lamp are connected；
The control signal generation module is used for according to the cold-hot condition of input-signal judging lamp to control the control pipe to work,
It inputs the bus voltage of termination metal halogen lamp electric ballast.
It is high as a kind of further prioritization scheme of high-low pressure firing circuit for metal halogen lamp electric ballast of the invention
Low-tension ignition circuit also includes temperature sensor, and the temperature sensor is used to sensing the temperature of Metal halogen lamp, and by TEMP
The induced voltage of device substitutes the input of the bus voltage input control signal generation module of metal halogen lamp electric ballast.
It is used as a kind of further prioritization scheme of high-low pressure firing circuit for metal halogen lamp electric ballast of the invention, institute
State control signal generation module and include first to tertiary voltage comparator, the second to the 7th resistance, the 5th electric capacity, signal input part
And signal output part；
Described first meets default operating voltage V to the power end of tertiary voltage comparatorcc, earth terminal is grounded；
Described second resistance one end is connected with the signal input part, other end one end respectively with 3rd resistor, first voltage
The input in the same direction of comparator is connected；
The reverse input end of the first voltage comparator connects default reference voltage VREF, output end and the 4th resistance
One end is connected；
The other end of 4th resistance one end respectively with the 5th resistance, the input phase in the same direction of second voltage comparator
Even；
One end, the one end of the 6th resistance of the reverse input end of the second voltage comparator respectively with the 5th electric capacity are connected, defeated
Go out the inverting input phase of end respectively with the other end, the other end of the 6th resistance, tertiary voltage comparator of the 5th resistance
Even；
One end, the one end of the 8th resistance of the input in the same direction of the tertiary voltage comparator respectively with the 7th resistance are connected, defeated
Go out end with the signal output part to be connected；
The other end and default operating voltage V of 7th resistanceccIt is connected；
The other end, the other end of the 5th electric capacity, the other end of the tenth electric capacity of 5th resistance are grounded.
The present invention uses above technical scheme compared with prior art, with following technique effect：
Using controlling circuit to make during Metal halogen lamp cold conditions lighting under normal conditions to be lighted a fire with voltage relatively low 2kV or so, and work as
Lamp hot extinguishing switches to more than 20kV high-tension ignition when restarting at once, it is ensured that lamp can be under any circumstance at any time by point
It is bright, while by controlling to switch to low pressure resonant ignition during the cooling of the lamps such as the delay time of circuit configuration so as to the damage of electrode
Wound is minimum, so as to add the life-span of lamp.
Brief description of the drawings
Fig. 1 is Metal halogen lamp high-low pressure ignition principle figure；
Fig. 2 is the electrical block diagram of the high-low pressure firing circuit for metal halogen lamp electric ballast；
Fig. 3 is the circuit signal of the high-low pressure firing circuit for metal halogen lamp electric ballast based on signal transacting feedback control
Figure；
Fig. 4 is a kind of circuit diagram of control signal generation module.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, the invention discloses a kind of high-low pressure firing circuit for metal halogen lamp electric rectifier, including
Low pressure resonance circuit, high-tension ignition circuit and control circuit.
The low pressure resonance circuit connects the half-bridge output of metal halogen lamp electric ballast, and the high-tension ignition circuit connects described low
Resonance circuit is pressed, the control circuit connects the high-tension ignition circuit, and the low pressure resonance circuit is used to carry in cold conditions lighting
Modulating voltage is put for more than 2kV, and provides triggering level for the high-tension ignition circuit when hot；The high-tension ignition circuit is used
More than 20kV high pressures are provided when in hot lighting to be lighted a fire；The control voltage is used to produce control by sample bus voltage
Automatic level control high-tension ignition circuit processed.
The low pressure resonance circuit includes the first to the 3rd electric capacity and resonant inductance.First electric capacity one terminates Metal halogen lamp
The half-bridge output of electric ballast, one end of another termination resonant inductance；One end of the electric capacity of another termination second of resonant inductance,
One end of the electric capacity of another termination the 3rd of second electric capacity.First electric capacity serves blocking effect under given point modulation frequency.It is humorous
Shake inductance, the second electric capacity, the 3rd electric capacity is issued in given half-bridge driven spark rate or close to resonance.
Second electric capacity, the 3rd electric capacity are in series relationship in low pressure resonant tank, and equivalent capacitance value is much smaller than the
One electric capacity.
The high-tension ignition circuit includes transformer, discharge tube, the 4th electric capacity and first resistor；The primary line
Enclose one end and connect one end that the other end of second electric capacity, the other end connect the discharge tube；Transformer secondary coil one end
The other end respectively with resonant inductance, one end of the second electric capacity are connected, and the other end is connected with one end of Metal halogen lamp；It is described to put
One end, the one end of the 4th electric capacity of the other end of fulgurite respectively with first resistor are connected.
The control circuit includes control signal generation module and control pipe；The output of the control signal generation module connects
Tube grid is controlled, the other end, the other end of the 4th electric capacity that drain respectively with first resistor of the control pipe are connected, the control
The source electrode of tubulation respectively with one end of the 3rd electric capacity, the other end of Metal halogen lamp, be connected, control pipe is described with cascade access
In branch road of the high-tension ignition circuit containing discharge tube.
The bus voltage of the input termination metal halogen lamp electric ballast of control signal generation module.
Device can also be set to be used for the temperature sensor for sensing Metal halogen lamp temperature, the induced voltage of temperature sensor is substituted
The bus voltage of metal halogen lamp electric ballast inputs the input of control signal generation module.
In Fig. 2, C1：First electric capacity；L：Resonant inductance；C2：Second electric capacity；C3：3rd electric capacity；T：Transformer；B：Golden halogen
Lamp；D：Discharge tube；R1：First resistor；C4：4th electric capacity；M：Control pipe；Vc：Control signal is inputted；Vin：Half-bridge driven is inputted
Voltage.
As shown in figure 3, when being controlled using IC or single-chip microcomputer, sampled light tube electric voltage by divider resistance R2 and R3, by
IC processing judges that lighting is normal if light tube electric voltage quickly step-down, and output control signal is always low level, control pipe is broken
Open.If sampling out voltage and continuing higher, illustrate now for abnormal starting state, control signal output high level, control pipe conducting,
Utilize high pressure lighting.
Control signal generation module judges the cold-hot condition of lamp according to the voltage of bus voltage or temperature sensor, and it is exported
The height of digital level controls the switch of control pipe, so as to select high-low pressure sparking mode；Judgment mode can be
But it is not limited to the IC after light tube electric voltage current sample or single-chip microcomputer processing, in addition to according to bus or input voltage fluctuation
The signal transacting of progress.
Fig. 4 is a kind of way of realization of control signal generation module, wherein, Vin:Bus voltage is inputted；C5:Delay capacitor；
VC1:Control output.When being controlled using discrete device, the grid of the control pipe of the whole firing circuit of control output connection.VinFor
Bus input voltage, VccFor comparator supply voltage, VREFFor default reference voltage, R4 is second resistance, and R5 is the 3rd electricity
Resistance, R6 is the 4th resistance, and R7 is the 5th resistance, and R8 is the 6th resistance, and R9 is the 7th resistance, and R10 is the 8th resistance, and C5 is the 5th
Electric capacity.
The control signal generation module comprising first to tertiary voltage comparator, the second to the 7th resistance, the 5th electric capacity,
Signal input part and signal output part；
Described first meets default operating voltage V to the power end of tertiary voltage comparatorcc, earth terminal is grounded；
Described second resistance one end is connected with the signal input part, other end one end respectively with 3rd resistor, first voltage
The input in the same direction of comparator is connected；
The reverse input end of the first voltage comparator connects default reference voltage VREF, output end and the 4th resistance
One end is connected；
The other end of 4th resistance one end respectively with the 5th resistance, the input phase in the same direction of second voltage comparator
Even；
One end, the one end of the 6th resistance of the reverse input end of the second voltage comparator respectively with the 5th electric capacity are connected, defeated
Go out the inverting input phase of end respectively with the other end, the other end of the 6th resistance, tertiary voltage comparator of the 5th resistance
Even；
One end, the one end of the 8th resistance of the input in the same direction of the tertiary voltage comparator respectively with the 7th resistance are connected, defeated
Go out end with the signal output part to be connected；
The other end and default operating voltage V of 7th resistanceccIt is connected；
The other end, the other end of the 5th electric capacity, the other end of the tenth electric capacity of 5th resistance are grounded.
When normal start, R4 and R5 partial pressure are more than reference voltage VREFFirst comparator exports high level, due to second
Comparator connects a delay capacitor so that the second comparator output high level, and the input terminal voltage in the same direction of the 3rd comparator
For R9 and R10 partial pressure, so the 3rd comparator is output as low level, the control pipe of ignition system disconnects, and utilizes resonant tank
Lighting.When restarting after unexpected power-off or artificial maloperation are turned off the light, due to the electric charge storage on delay capacitor C5, second is set to compare
Device exports low level, and the 3rd comparator output high level, ignition system control pipe closure, now startup lighting can then trigger electric discharge
Pipe, the high pressure lighting produced using transformer.And after delay capacitor C5 is discharged into below particular value, the output of the second comparator
It is changed into high level again, the 3rd comparator is output as low level, it is ensured that without using high-tension ignition when starting after lamp cooling.Here join
Examine delay time 5-8 minutes.
Whole high-low pressure firing circuit have adjusted component parameters distribution and position on the basis of general firing circuit, for
Low-tension ignition suitably adds transformer, discharge tube and control pipe, and cost is relatively low.Control is flexible, can select as needed IC or
Discrete device is controlled, and reliability is high, and the smooth startup of Metal halogen lamp can be effectively ensured, and is improved before the marketization practicality of Metal halogen lamp
Scape.
Those skilled in the art of the present technique are it is understood that unless otherwise defined, all terms used herein（Including skill
Art term and scientific terminology）With the general understanding identical meaning with the those of ordinary skill in art of the present invention.Also
It should be understood that those terms defined in such as general dictionary should be understood that with the context of prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with idealization or excessively formal implication.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not limited to this hair
Bright, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in the present invention
Protection domain within.
Claims (3)
1. a kind of high-low pressure firing circuit for metal halogen lamp electric ballast, it is characterised in that including first to fourth electric capacity,
Resonant inductance, transformer, discharge tube, first resistor, control signal generation module and control pipe；
The half-bridge output of the termination of first electric capacity one metal halogen lamp electric ballast, the other end is connected with one end of resonant inductance；
One end, the one end of transformer secondary coil of the other end of the resonant inductance respectively with the second electric capacity are connected；
One end, the one end of transformer of the other end of second electric capacity respectively with the 3rd electric capacity are connected；
The other end of the transformer secondary coil is connected with one end of Metal halogen lamp, the other end of transformer and described
One end of discharge tube is connected；
One end, the one end of the 4th electric capacity of the other end of the discharge tube respectively with the first resistor are connected；
The grid of the control pipe is connected with the output end of the control signal generation module, the drain electrode of control pipe respectively with it is described
The other end of first resistor, the other end of the 4th electric capacity are connected, the source electrode of the control pipe other end respectively with the 3rd electric capacity,
Ground, the other end of Metal halogen lamp are connected；
The control signal generation module is used for according to the cold-hot condition of input-signal judging lamp to control the control pipe to work,
It inputs the bus voltage of termination metal halogen lamp electric ballast.
2. the high-low pressure firing circuit according to claim 1 for metal halogen lamp electric ballast, it is characterised in that also wrap
Containing temperature sensor, the temperature sensor is used for the temperature for sensing Metal halogen lamp, and the induced voltage of temperature sensor is substituted
The bus voltage of metal halogen lamp electric ballast inputs the input of control signal generation module.
3. the high-low pressure firing circuit according to claim 1 or 2 for metal halogen lamp electric ballast, it is characterised in that
The control signal generation module includes first to tertiary voltage comparator, the second to the 7th resistance, the 5th electric capacity, signal input
End and signal output part；
Described first meets default operating voltage V to the power end of tertiary voltage comparatorcc, earth terminal is grounded；
Described second resistance one end is connected with the signal input part, other end one end respectively with 3rd resistor, first voltage
The input in the same direction of comparator is connected；
The reverse input end of the first voltage comparator connects default reference voltage VREF, output end and the 4th resistance
One end is connected；
The other end of 4th resistance one end respectively with the 5th resistance, the input phase in the same direction of second voltage comparator
Even；
One end, the one end of the 6th resistance of the reverse input end of the second voltage comparator respectively with the 5th electric capacity are connected, defeated
Go out the inverting input phase of end respectively with the other end, the other end of the 6th resistance, tertiary voltage comparator of the 5th resistance
Even；
One end, the one end of the 8th resistance of the input in the same direction of the tertiary voltage comparator respectively with the 7th resistance are connected, defeated
Go out end with the signal output part to be connected；
The other end and default operating voltage V of 7th resistanceccIt is connected；
The other end, the other end of the 5th electric capacity, the other end of the tenth electric capacity of 5th resistance are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566557.5A CN107318209A (en) | 2017-07-12 | 2017-07-12 | A kind of high-low pressure firing circuit for metal halogen lamp electric ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566557.5A CN107318209A (en) | 2017-07-12 | 2017-07-12 | A kind of high-low pressure firing circuit for metal halogen lamp electric ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107318209A true CN107318209A (en) | 2017-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710566557.5A Pending CN107318209A (en) | 2017-07-12 | 2017-07-12 | A kind of high-low pressure firing circuit for metal halogen lamp electric ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107318209A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201114939Y (en) * | 2007-08-07 | 2008-09-10 | 陈宝琦 | A mobile lighting device with hot restart function |
| CN202514148U (en) * | 2012-03-26 | 2012-10-31 | 黄太群 | High-frequency electronic ballast of high-pressure gas discharge lamp |
| CN103391676A (en) * | 2013-07-01 | 2013-11-13 | 广州纽威光电科技有限公司 | Hot-starting electronic ballast of metal halide lamp |
| CN203446088U (en) * | 2013-08-19 | 2014-02-19 | 深圳市朗科智能电气股份有限公司 | Electronic ballast capable of delay starting in hot lamp state |
-
2017
- 2017-07-12 CN CN201710566557.5A patent/CN107318209A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201114939Y (en) * | 2007-08-07 | 2008-09-10 | 陈宝琦 | A mobile lighting device with hot restart function |
| CN202514148U (en) * | 2012-03-26 | 2012-10-31 | 黄太群 | High-frequency electronic ballast of high-pressure gas discharge lamp |
| CN103391676A (en) * | 2013-07-01 | 2013-11-13 | 广州纽威光电科技有限公司 | Hot-starting electronic ballast of metal halide lamp |
| CN203446088U (en) * | 2013-08-19 | 2014-02-19 | 深圳市朗科智能电气股份有限公司 | Electronic ballast capable of delay starting in hot lamp state |
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