CN202425179U - Electronic ballast - Google Patents
Electronic ballast Download PDFInfo
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- CN202425179U CN202425179U CN2011205357727U CN201120535772U CN202425179U CN 202425179 U CN202425179 U CN 202425179U CN 2011205357727 U CN2011205357727 U CN 2011205357727U CN 201120535772 U CN201120535772 U CN 201120535772U CN 202425179 U CN202425179 U CN 202425179U
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Abstract
The utility model relates to electronic ballast, which comprises a dimming circuit, a microcontroller and a sweep frequency ignition circuit. The dimming circuit and the sweep frequency ignition circuit are respectively connected into the microcontroller. The electronic ballast is safe and reliable, equivalent brightness can be adjusted, energy-saving effects are remarkable, sweep frequency ignition can be realized, and the service life of a lamp can be prolonged by the aid of the electronic ballast.
Description
Technical field
The utility model belongs to electricity field, relates to a kind of ballast, relates in particular to a kind of intelligent high pressure electronic lamp ballast.
Background technology
Electric ballast (Electricalballast) is a kind of of ballast, is to adopt electronic technology to drive electric light source, makes it to produce the electronic equipment of required illumination.Corresponding is inductance type ballast (or ballast) with it.The increasing use electric ballast of modern fluorescent lamp, light small and exquisite, even can electric ballast and fluorescent tube etc. be integrated, simultaneously, electric ballast can have the starter function concurrently usually, so can save independent starter again.Electric ballast can also have greater functionality, such as the scintillation that can improve or eliminate fluorescent lamp through raising power frequency or current waveform (as becoming square wave); Also can make fluorescent lamp can use DC power supply through the power inverter process.But at present at the various electric ballasts of usefulness because can there be following defective in its internal circuit structural reason:
1, can not regulate the brightness of lamp.In practical application; To various case in the road lighting; For example after midnight on the road pedestrian and vehicle flowrate reduce in the time of need not carrying out the whole step illumination or the weather condition of low visibility such as sleet dense fog occur; All need need adjust accordingly road lighting, carry out additional illumination or suppress illumination, lighting such as this control methods even circuit all have very high requirement.And electric ballast does not have the function of this respect, the useful life of having wasted the energy greatly or having reduced lamp.
2, poor safety performance.In thunderstorm weather; If the circuit supply network is hit by thunder and lightning; The circuit that piezo-resistance in the circuit and high-voltage discharge tube are formed can be shorted to the earth with posting the high pressure that adds in any one in live wire, the zero line in the electrical network, prevents that circuit from damaging because of the high pressure that seals in.When attacking to natural weathers such as thunderstorms, the unprotect function, easily by attacks such as thunders and lightnings, the product safety poor reliability.
3, the useful life of lamp is low.Present various electric ballast exists makes the sodium vapor lamp glow discharging process oversize, and it is bigger in time to get into lonely light discharge process and initial lamp electric current, makes lamp electrode and " wall blackout ", the useful life of further having reduced lamp.
The utility model content
In order to solve the above-mentioned technical problem that exists in the background technology, the utility model provide a kind of can equity brightness regulate, energy-saving effect is remarkable, safe and reliable, can realize frequency sweep igniting and the electric ballast that can prolong the useful life of lamp.
The technical solution of the utility model is; The utility model provides a kind of electric ballast, and its special character is: said electric ballast comprises light adjusting circuit, microcontroller and frequency sweep firing circuit; Said light adjusting circuit and frequency sweep firing circuit insert microcontroller respectively.
Above-mentioned light adjusting circuit comprises voltage input end, light adjusting circuit signal input unit, signal conversion unit, control signal output unit and bearing power regulon; Said voltage input end inserts the bearing power regulon through light adjusting circuit signal input unit, signal conversion unit and control signal output unit successively.
Above-mentioned voltage input end comprises that the voltage range of input is the outside dc voltage input end of 0-10V and by frequency voltage signal input that light adjusting circuit produced; Said light adjusting circuit signal input unit comprises voltage comparator; Said external voltage input and frequency voltage signal input insert voltage comparator respectively; Said signal conversion unit comprises the first integral circuit; Said light adjusting circuit signal input unit inserts microcontroller through the first integral circuit; Said first integral circuit comprises first electric capacity and first resistance; One end ground connection of said first electric capacity, the other end and the common microcontroller that inserts after first resistance and light adjusting circuit signal input unit are parallelly connected; Said control signal output unit comprises the second integral circuit and second microcontroller; Said second microcontroller comprises voltage controlled oscillator; Said signal conversion unit inserts second microcontroller through the second integral circuit; Said second integral circuit comprises second electric capacity and second resistance; Said signal conversion unit links to each other with second microcontroller through second resistance; One end ground connection of said second electric capacity, the other end with insert second microcontroller after second resistance is parallelly connected; Said bearing power regulon comprises choke induction; Said second microcontroller inserts choke induction.
Above-mentioned frequency sweep firing circuit comprises the 3rd resistance, the 4th resistance and the 3rd electric capacity; End ground connection after said the 3rd resistance and the 4th resistance parallel connection, the other end inserts second microcontroller; Said the 3rd electric capacity inserts second controller.
Above-mentioned electric ballast also comprises the thermal protection circuit that links to each other with microcontroller.
Above-mentioned thermal protection circuit comprises the 4th electric capacity, the 5th resistance and thermistor; The end ground connection that said the 4th electric capacity is parallelly connected with thermistor, the other end with insert microcontroller after the 5th resistance is parallelly connected.
Above-mentioned thermistor is the thermistor of negative temperature coefficient.
Above-mentioned electric ballast also comprises anti-thunderbolt protective circuit, and said anti-thunderbolt protective circuit links to each other with light adjusting circuit, microcontroller, scanning telephone circuit or thermal protection circuit.
Above-mentioned anti-thunderbolt protective circuit comprises the high-voltage discharge tube SG1 of the piezo-resistance Rv3 that links to each other with the electrical network live wire, the piezo-resistance Rv2 that links to each other with the electrical network zero line and ground connection.
Above-mentioned second microcontroller is the MC14046B chip; Said microcontroller is the PIC16 Series chip; The preferred PIC16F886 single-chip microcomputer of said microcontroller.
The utility model has the advantages that:
1, can regulate the brightness of lamp, energy-saving effect is remarkable.The utility model is because the control of microcontroller internal processes can make the power of lamp in 50%～100% rated power scope, change.The direct voltage digital dimming function of 0～10V can realize the illumination control in flat-out 50%～100% scope of lamp.On the one hand, lamp can change according to external circumstances through external day device such as optical inductor, realizes light modulation automatically, regulates illumination.On the other hand, also can networking, realize unified control, by central integrated control system, allotment integral illumination or adjust the parameter of every lamp.This dimmer design that can freely dispose makes in road lighting is used, and in the illumination, can realize low illuminance control especially in the second half of the night, has both satisfied the actual illumination demand, has practiced thrift electric energy again.Be suitable for the illumination in places such as supermarket, market, parking lot, road.
2, security reliability is strong.The utility model makes full use of the advantage of microprocessor control, has increased the ability of data volume and processing, analysis data, makes full use of the advantage of the low parts number of microprocessor, high reliability, further improves the data volume of its processing.Through corresponding program, simplified the design of four modular circuits such as drive circuit control, the control of differential mode protective circuit, adjusting control circuit, the control of APFC circuit working state, but do not influenced the accuracy and the reliability of its work.And drive circuit, differential mode protective circuit, adjusting control circuit, APFC circuit monitored, control, final proof load long-term stable operation.Guarantee circuit whole reliability and stability.
3, distinctive frequency sweep igniting.The utility model combines the wide range of frequencies square wave of frequency generator output, has eliminated the influence of the resonance frequency drift that causes because of the practical devices parameter error effectively, makes each product that a perfect resonant ignition process all can be arranged.Because resonant frequency point is suitable, just eliminate the sodium vapor lamp glow discharging process and reduced the initial lamp electric current, and then eliminated lamp electrode and " wall blackout " effectively, prolonged the useful life of lamp.
4, has anti-thunderbolt defencive function.The utility model especially to thunderstorm weather, increases lightning prevention circuit according to the situation of practical application, makes the product safety and reliability.
Description of drawings
Fig. 1 is the frame principles sketch map of the electric ballast that provides of the utility model;
Fig. 2 is the scanning element ignition circuit structural representation that the utility model adopts;
Fig. 3 is the anti-thunderbolt protective circuit that the utility model adopts;
Fig. 4 is the circuit theory diagrams of the thermal protection circuit that adopts of the utility model;
Fig. 5 is that the external voltage amount U that the utility model adopts arrives the circuit diagram of internal frequency amount F conversion;
Fig. 6 is adjustment load power output signaling conversion circuit and the microcontroller receiving circuit figure that the utility model adopts;
Fig. 7 is the second integral circuit diagram that the utility model adopts.
Embodiment
Referring to Fig. 1, the utility model provides a kind of electric ballast, and electric ballast comprises light adjusting circuit, microcontroller and frequency sweep firing circuit; Light adjusting circuit and frequency sweep firing circuit insert microcontroller respectively.Microprocessor control provides efficiently, handles higher reliability, set of devices number of packages still less, littler volume accurately.
The frequency sweep igniting can guarantee stable igniting, has fundamentally eliminated lamp electrode and " wall blackout ", prolongs the lamp life-span.
Light adjusting circuit is the light modulation of gamut analog or digital, obvious energy conservation, and external sensing assembling, every lamp can be realized light modulation automatically.
Light adjusting circuit comprises voltage input end, light adjusting circuit signal input unit, signal conversion unit, control signal output unit and bearing power regulon; Voltage input end inserts the bearing power regulon through light adjusting circuit signal input unit, signal conversion unit and control signal output unit successively.
Voltage input end comprises that the voltage range of input is the outside dc voltage input end of 0-10V and by frequency voltage signal input that light adjusting circuit produced; The light adjusting circuit signal input unit comprises voltage comparator; External voltage input and frequency voltage signal input insert voltage comparator respectively; Signal conversion unit comprises the first integral circuit; The light adjusting circuit signal input unit inserts microcontroller through the first integral circuit; The first integral circuit comprises first electric capacity and first resistance; One end ground connection of first electric capacity, the other end and the common microcontroller that inserts after first resistance and light adjusting circuit signal input unit are parallelly connected; The control signal output unit comprises the second integral circuit and second microcontroller; Said second microcontroller comprises voltage controlled oscillator; Signal conversion unit inserts second microcontroller through the second integral circuit; The second integral circuit comprises second electric capacity and second resistance; Signal conversion unit links to each other with second microcontroller through second resistance; One end ground connection of second electric capacity, the other end with insert second microcontroller after second resistance is parallelly connected; The bearing power regulon comprises choke induction; Output frequency, promptly the loaded work piece frequency inserts choke induction.
Referring to Fig. 2, the frequency sweep firing circuit comprises the 3rd resistance, the 4th resistance and the 3rd electric capacity; End ground connection after the 3rd resistance and the 4th resistance parallel connection, the other end inserts second microcontroller; The 3rd electric capacity inserts second controller.
Electric ballast also comprises the thermal protection circuit that links to each other with microcontroller.
Referring to Fig. 4, thermal protection circuit comprises the 4th electric capacity, the 5th resistance and thermistor; The end ground connection that the 4th electric capacity is parallelly connected with thermistor, the other end with insert microcontroller after the 5th resistance is parallelly connected.When instant secondary throws light on, automatically shut down output, delay start.When the ballast operation ambient temperature is spent above 85, ballast will be controlled lamp power output to 50%, lower up to temperature.If temperature surpasses 90 degree, ballast will quit work.If temperature is below 85 degree, ballast is with operate as normal.
Thermistor is the thermistor of negative temperature coefficient.
Electric ballast also comprises anti-thunderbolt protective circuit, prevents the thunderbolt protective circuit and links to each other with power input.The light adjusting circuit in later stage, microcontroller, frequency sweep firing circuit or thermal protection circuit belong to circuit to importing the circuit that connects behind the power rectifier.
Referring to Fig. 3, anti-thunderbolt protective circuit comprises the high-voltage discharge tube SG1 of the piezo-resistance Rv3 that links to each other with the electrical network live wire, the piezo-resistance Rv2 that links to each other with the electrical network zero line and ground connection.
Second microcontroller is the MC14046B chip; Microcontroller is the PIC16 Series chip; The preferred PIC16F886 single-chip microcomputer of microcontroller.
The distinctive frequency sweep igniting that the utility model adopts.At present, the high pressure of the inductance coupling mutual inductance of the pure analog quantity of domestic main employing generation or the igniting of LC resonance high-voltage.Be used for the frequency sweep firing circuit: mainly be 13 pin output pwm control signal by microcontroller.Behind the capacitor filtering at 9 pin places through U12, obtain a stable effective value voltage.This effective value voltage is adjusted the frequency signal of output through after the U12 sampling, handling.U12 has a minimum and maximum output frequency, by resistance R 15, R71 and capacitor C 8 decisions.PWM through microcontroller 13 pin changes, and accomplishes the frequency output of a wide region, realizes the frequency sweep igniting.This digital control sparking mode in conjunction with the wide range of frequencies square wave of frequency generator output, has been eliminated the influence of the resonance frequency drift that causes because of the practical devices parameter error effectively, makes each product that a perfect resonant ignition process all can be arranged.Because resonant frequency point is suitable, just eliminate the sodium vapor lamp glow discharging process and reduced the initial lamp electric current, and then eliminated lamp electrode and " wall blackout " effectively, prolonged the useful life of lamp.
Anti-thunderbolt protective circuit: in thunderstorm weather; If the circuit supply network is hit by thunder and lightning; The circuit that piezo-resistance in the circuit and high-voltage discharge tube are formed can be shorted to the earth with posting the high pressure that adds in any one in live wire, the zero line in the electrical network, prevents that circuit from damaging because of the high pressure that seals in.The ability that conforms that this has further increased circuit has improved fail safe.
Make the four-layer glass fiber board of 190 * 67 * 1.6mm by designing requirement; Through the relevant position of chip mounter at circuit board; Mount devices such as corresponding resistance, electric capacity, chip, then at the another side of circuit board, discrete devices such as plug-in mounting electrochemical capacitor, inductance; Carry out the device welding through wave-soldering, form the main circuit main body.
On the layer glass fiber board of 50 * 30 * 1.6mm that makes on request, in the corresponding position of circuit, mount corresponding device through chip mounter, and after welding through wave-soldering, completion light modulation, communicating circuit.
Afterwards, light modulation, dress communicating circuit plate are assembled to the correspondence position of main circuit board, the lead that is welded to connect, burning control chip program on the circuit port of reserving at this moment, forms the complete circuit main body.The circuit main body made is put in the draw-in groove of U-shaped housing, installed additional the fin of power MOS pipe, install the case side panel additional with the M3 screw, the dark heat conductive silica gel of embedding 25mm then, the assembling shell top cover, and, promptly accomplish electric ballast with the reinforcing of M3 screw.
For example, the intelligent high-pressure sodium electronic lamp ballast of 150W specification is suitable for the illumination in places such as supermarket, market, parking lot, road.This specification electronic ballast system is embedded in software, has improved efficient, reliability, has reduced volume, has practiced thrift cost.Distinctive control ignition mode makes lumen consistency, the color consistency of lamp more stable.Eliminate lamp electrode and tube wall blackout effectively, prolonged lamp useful life.The intelligent high-pressure sodium electronic lamp ballast of this 150W specification can dock with the dimming control system of existing 0～10V, has expanded the energy-conservation ability of system.The plug and play platform of cooperation demand reacts, installs simpler and more direct.
Referring to Fig. 4, the thermal protection circuit that the utility model adopts comprises the bleeder circuit that is made up of thermistor and resistance, the microcontroller that being used for of linking to each other with bleeder circuit regulated and control the power output of electrical appliance.Bleeder circuit comprises electric capacity, resistance and thermistor; The end ground connection that electric capacity is parallelly connected with thermistor, the other end with insert microcontroller after resistance is parallelly connected.
Thermal protection circuit is when concrete work, and at normal temperatures, the resistance of thermistor is certain.The bleeder circuit that its RT3 and R60 form, magnitude of voltage is fixed on the RT3 resistance.When the ambient temperature rising, the resistance of RT3 resistance is also corresponding to be reduced, and the partial pressure value that obtains on it is also descending.When ambient temperature rises to certain value, when the last partial pressure value of RT3 is lower than the value of microcontroller inner setting, just, the power of lamp is reduced by the 13 pin output control signal corresponding of microcontroller, to reduce caloric value, reduce ambient temperature.The partial pressure value that RT3 is last, the 5 pin sampling of logical microcontroller, during greater than the inner setting value, the 13 pin output control signal corresponding by microcontroller makes lamp recover the full power operation state.By changing controller 5 pin sampling current potential after the NTC resistance induction ambient temperature; 13 pin signals output after the signal processing; Change the second microcontroller output frequency; Change the loaded work piece frequency; Change power output and regulate temperature.
With reference to circuit diagram 5, be the circuit diagram that the utility model is converted into resulting external voltage the fixed-frequency signal; Its circuit working process can be described as:
1, after circuit powered on, the voltage at Bin-end place was owing to being made up of resistance series connection dividing potential drop, so the voltage constant of locating.The voltage at Bin+ end place is made up of R3, R12, R7, C5, the voltage at sampling R7 end place.Because the charging process of electric capacity, the voltage that gather at the Bin+ place is a slow uphill process.
2, at the voltage at Bin+ place during also not greater than the voltage at Bin-place, after voltage comparator U2 processing, BOUT place output low level.Q2, Q3 triode are in off state at this moment, and the voltage at Ain+ place is unaffected.When the voltage at Bin+ place rose to the voltage greater than the Bin-place, BOUT exported high level.Q2 conducting this moment, and then make the Q3 conducting, after the Q3 conducting, the voltage at A+ place is pulled down to ground.Meanwhile, the voltage at B+ place is also dragged down.
3, when the voltage at B+ place is pulled down to the voltage less than the B-place, after voltage comparator U2 handles, the BOUT output LOW voltage, this moment, Q2, Q3 turn-offed, and the voltage at Bin+ place gos up, the voltage rise at Ain+ place.
4, the output BOUT of comparator B, the change in voltage at Bin+ place repeats above-mentioned 2,3 processes.
5, the voltage at Ain-place is by external dimmer voltage control.
6, the change in voltage at the voltage at Ain+ place and Bin+ place is almost synchronous, changes the same Bin+ of waveform.When the voltage at Ain+ place during greater than Ain-, AOUT exports high level, and light coupling device turn-offs; When Ain+ receives the influence of comparator B, voltage descends, during less than A-place voltage, and the AOUT output low level, light coupling device is open-minded.
7, light coupling device time of opening and turn-offing, the cycle control signal that constitutes light adjusting circuit feeds back to the dim signal of microcontroller.After the sampled signal processing, by microprocessor identification, processing, control load variable power.
By external voltage amount U be: transformation from external voltage amount U to internal frequency amount F to the operation principle of internal frequency amount F.With the voltage signal amount of outside, conversion can be the employed frequency signal amount of internal circuit.Outside input 0～10V voltage; The frequency voltage signal that circuit produces; Voltage comparator compares; Output frequency signal.
Convert inner employed frequency signal into by external voltage, the frequency when the frequency signal amount F2 here is not circuit load work.A title that is merely the inner sawtooth waveforms frequency that produces of differentiation light adjusting circuit here and sets) the available following table of relation between is represented:
Light adjusting circuit and little following by the controlling models between the system device:
External 0～10V digital voltage module; Light adjusting circuit; The signal input; Signaling conversion circuit; Microcontroller; Control signal output.The periodic signal of light adjusting circuit, be transferred to signaling conversion circuit after, it becomes voltage signal, at last by after the microcontroller sampling processing, adjustment load power output signaling conversion circuit and microcontroller receiving circuit such as Fig. 6:
The output signal of light adjusting circuit is added to capacitor C 47 places.Supply power voltage is through resistance R 52, C47 ground connection.Because the signal at light adjusting circuit place, when opening, electric current is that 14 pins from microcontroller flow to light adjusting circuit; When turn-offing, electric current is provided by power supply, flows to ground through capacitor C 47.
Through the integrating circuit of forming by R52 and C47, can obtain an effective value voltage at 14 pin of PIC16F886 single-chip microcomputer.The effective value computing formula of this voltage is following:
U=5 * (D
0.5) ... ... formula 1
Here, D is the duty ratio of fixed-frequency signal F2 signal.
The output signal of light adjusting circuit is the signal that one-period property is opened, turn-offed, and this signal causes current direction generating period property in the capacitor C 47.Finally 14 pin at microcontroller obtain a metastable voltage effective value signal.This signal is output after microcontroller is handled, and the power of regulating load changes.The cycle of this periodic signal is by the voltage decision of outside output.
Referring to Fig. 7, in the frequency sweep firing circuit, the MC14046B that uses is trivial phase ring core sheet.Use its voltage controlled oscillator function in this circuit; Realization is from the F (fixed frequency signal) of PIC16 series monolithic output; Behind the integrating circuit through resistance R 68 and capacitor C 12 compositions; The F ' (F in the service frequency signal step 3)) that is used for circuit working by MC14046B output wherein, 13 pin of the PIC16F886 single-chip microcomputer of in this circuit, using are exported the pwm signal that amplitude is 5V.Its frequency is fixed, but duty ratio is by maximum 1 linear change to 0 in ignition process.Finally export a frequency by the change frequency of 355KHZ to 61KHZ by 4 pin of MC14046B chip.In this frequency range, lead the resonance point of looking for circuit, to reach the purpose that an only ignition voltage is provided.
Its operation principle can be reduced to: PIC16F series monolithic output pwm signal (fixed frequency signal); The RC integrating circuit changes into voltage signal (sampled voltage amount) with pwm signal; Voltage controlled oscillator output certain frequency waveform in the MC14046B.
The control voltage that pwm signal converts to is imported; Voltage controlled oscillator; Output frequency signal f2 oscillator source frequency signal f1;
Its linear relation is: F2=k * U+F1.... ... ... ... formula 2
K is voltage-controlled coefficient, and F1 is the minimum output frequency (in the chip data introduction being arranged) that MC14046B and peripheral circuit are provided with.
In this circuit, it by the pwm signal of chip to the linear relation of output services frequency signal is:
F2=45 * V * (D
0.5)+61 final result is KHZ ... ... ... formula 3
Wherein 45 is voltage-controlled coefficient.V is the amplitude of PIC16F family chip output pwm signal, and D is the duty ratio of pwm signal (drawing corresponding value after through sequential operation by PIC control chip inside) for this reason.61KHZ is the minimum output frequency that peripheral circuit and MC14046B chip are formed in this circuit.
The control of PIC16F series monolithic output pwm signal duty ratio:
In the PIC16F series monolithic, all be provided with special pin position and be used for output pwm signal.And single-chip microcomputer inside is provided with A/D (mould, number conversion) conversion pin, has reached 10 resolution.For the level of digital circuit 5V, its minimum differntial pressure that can discern is: 5/ (2
10)=0.004828125 almost can be realized by analog quantity fully behind digital quantity, and reduction is without distortion gone back.
In this circuit, the PIC single-chip microcomputer arrives the duty ratio of regulating output pwm signal with the voltage signal that 14 pin sample, and is after carrying out corresponding calculated through the program of inside circuit, to carry out control and treatment.
In this circuit, the computing formula of its control pwm signal duty ratio D is:
D=[(2+0.22V)/5]
2... ... ... ... formula 4
V is the sampled voltage signal of PIC16F886 single-chip microcomputer 14 pin in the circuit in the formula.It is that frequency signal by light adjusting circuit plate output is through being undertaken drawing behind the integration by R52 and C47.The detailed calculated process is seen " formula 1 "
The regulative mode of the last regulating load power of operating frequency is:
Its interactively formula is: P (load)=U2
2/ RL.................. formula 5
Wherein U2=U1 * RL/ (RL+2 π * F2 * L) ... ... ... ... formula 6
RL is the resistance of load, and L is the inductance value of choke induction, and U1 is the circuit dc bus voltage
Whole by light adjusting circuit, handle to the PIC16F series monolithic external voltage signal conversion back, convert result into the loaded work piece frequency again, end reaction is the process of bearing power.The conversion of completion external voltage signal; The RC integrating circuit; Output pwm signal after the PIC16 series monolithic signal processing; The RC integrating circuit; Frequency control signal output; Regulating load voltage changes power.
Claims (10)
1. electric ballast, it is characterized in that: said electric ballast comprises light adjusting circuit, microcontroller and frequency sweep firing circuit; Said light adjusting circuit and frequency sweep firing circuit insert microcontroller respectively.
2. electric ballast according to claim 1 is characterized in that: said light adjusting circuit comprises voltage input end, light adjusting circuit signal input unit, signal conversion unit, control signal output unit and bearing power regulon; Said voltage input end inserts the bearing power regulon through light adjusting circuit signal input unit, signal conversion unit and control signal output unit successively.
3. electric ballast according to claim 2 is characterized in that: said voltage input end comprises that the voltage range of input is the outside dc voltage input end of 0-10V and by frequency voltage signal input that load circuit produced; Said light adjusting circuit signal input unit comprises voltage comparator; Said external voltage input and frequency voltage signal input insert voltage comparator respectively; Said signal conversion unit comprises the first integral circuit; Said light adjusting circuit signal input unit inserts microcontroller through the first integral circuit; Said first integral circuit comprises first electric capacity and first resistance; One end ground connection of said first electric capacity, the other end and the common microcontroller that inserts after first resistance and light adjusting circuit signal input unit are parallelly connected; Said control signal output unit comprises the second integral circuit and second microcontroller; Said second microcontroller comprises voltage controlled oscillator; Said signal conversion unit inserts second microcontroller through the second integral circuit; Said second integral circuit comprises second electric capacity and second resistance; Said signal conversion unit links to each other with second microcontroller through second resistance; One end ground connection of said second electric capacity, the other end with insert second microcontroller after second resistance is parallelly connected; Said bearing power regulon comprises choke induction; Said second microcontroller inserts choke induction.
4. electric ballast according to claim 3 is characterized in that: said frequency sweep firing circuit comprises the 3rd resistance, the 4th resistance and the 3rd electric capacity; End ground connection after said the 3rd resistance and the 4th resistance parallel connection, the other end inserts second microcontroller; Said the 3rd electric capacity inserts second controller.
5. according to claim 1 or 2 or 3 or 4 described electric ballasts, it is characterized in that: said electric ballast also comprises the thermal protection circuit that links to each other with microcontroller.
6. electric ballast according to claim 5 is characterized in that: said thermal protection circuit comprises the 4th electric capacity, the 5th resistance and thermistor; The end ground connection that said the 4th electric capacity is parallelly connected with thermistor, the other end with insert microcontroller after the 5th resistance is parallelly connected.
7. electric ballast according to claim 6 is characterized in that: said thermistor is the thermistor of negative temperature coefficient.
8. electric ballast according to claim 7 is characterized in that: said electric ballast also comprises anti-thunderbolt protective circuit, and the power input of said anti-thunderbolt protective circuit and electric ballast joins.
9. electric ballast according to claim 8 is characterized in that: said anti-thunderbolt protective circuit comprises the high-voltage discharge tube SG1 of the piezo-resistance Rv3 that links to each other with the electrical network live wire, the piezo-resistance Rv2 that links to each other with the electrical network zero line and ground connection.
10. electric ballast according to claim 9 is characterized in that: said second microcontroller is the MC14046B chip; Said microcontroller is the PIC16 Series chip; The preferred PIC16F886 single-chip microcomputer of said microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205357727U CN202425179U (en) | 2011-12-14 | 2011-12-14 | Electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205357727U CN202425179U (en) | 2011-12-14 | 2011-12-14 | Electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202425179U true CN202425179U (en) | 2012-09-05 |
Family
ID=46749898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205357727U Withdrawn - After Issue CN202425179U (en) | 2011-12-14 | 2011-12-14 | Electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202425179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395239A (en) * | 2011-12-14 | 2012-03-28 | 西安华雷船舶实业有限公司 | Electrical ballast |
-
2011
- 2011-12-14 CN CN2011205357727U patent/CN202425179U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395239A (en) * | 2011-12-14 | 2012-03-28 | 西安华雷船舶实业有限公司 | Electrical ballast |
| CN102395239B (en) * | 2011-12-14 | 2013-11-06 | 西安华雷船舶实业有限公司 | Electrical ballast |
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