CN101969733A - Electrodeless lamp dimming ballast - Google Patents
Electrodeless lamp dimming ballast Download PDFInfo
- Publication number
- CN101969733A CN101969733A CN2010105044347A CN201010504434A CN101969733A CN 101969733 A CN101969733 A CN 101969733A CN 2010105044347 A CN2010105044347 A CN 2010105044347A CN 201010504434 A CN201010504434 A CN 201010504434A CN 101969733 A CN101969733 A CN 101969733A
- Authority
- CN
- China
- Prior art keywords
- voltage
- power
- circuit
- electrodeless lamp
- ballast
- 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.)
- Pending
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention relates to an electrodeless lamp dimming ballast, comprising a movable magnetic core arranged in a coupler of the ballast; a direct current reducing motor connected to one end of the movable magnetic core via a screw rod and for controlling the displacement of the movable magnetic core in order to control the inductance of the coupler; a lamp power voltage conversion circuit for detecting the current power of the electrodeless lamp and outputting a detection voltage signal of the corresponding voltage value; an instruction voltage conversion circuit for receiving an external dimming instruction and outputting an instruction voltage signal of the corresponding voltage value; and a voltage comparison and drive circuit for comparing the detection voltage signal with the instruction voltage signal to obtain a voltage difference and diving the direct current reducing motor to work according to the voltage difference, in order to correspond the power of the electrodeless lamp to the dimming instruction by varying the inductance of the coupler. The ballast of the invention achieves the purpose of continuous and precise dimming by continuously varying output-stage impedance of the electrodeless lamp dimming ballast.
Description
Technical field:
The present invention relates to the technical field of electroless lamp ballasting device, specifically is a kind of electrodeless lamp dimming ballast.
Background technology:
Chinese patent literature CN101534596 discloses a kind of electroless lamp ballasting device and electrodeless lamp, and electrodeless lamp comprises ballast, coupler and foam.Described ballast comprises: filter circuit, rectification circuit, circuit of power factor correction, high-frequency inverter circuit, drive circuit and protective circuit; power supply signal passes to rectification circuit after described filter circuit filtering; send described circuit of power factor correction to obtain more stable high-voltage DC power supply after rectification, described DC source produces high frequency ac signal through the high-frequency inverter circuit by described drive circuit control and lights described foam by coupler.Described filter circuit, rectification circuit, circuit of power factor correction are combined as the collimation stream power circuit of described ballast, be used for exchange input be transformed to contain certain pulsation direct current output.The weak point of the electroless lamp ballasting device in the prior art is: can not carry out continuous light tuning to electrodeless lamp.
Chinese patent literature CN1293531 discloses a kind of ballast that is used for electrode-less gas discharge lamp, comprises light adjusting circuit.Ballast comprises the load circuit of being furnished with the radio frequency inductive device, produces the radiofrequency field that electrodeless lamp is provided electric power.The voltage of inductor is detected by light adjusting circuit in direct current one a-c transducer of ballast.Use the light adjusting circuit of frequency shift keying (FSK) to make inductor and light adjusting circuit coupling by the light modulation inductor, light modulation inductor itself is connected with the dimmer switch of configured in series.Signal generator activates dimmer switch, provides frequency displacement to ballast.This frequency displacement descends the output of radio frequency inductive device, thereby turn-offs electrodeless lamp.Cause the vision light modulation of electrodeless lamp by the light adjusting circuit repeat switch.The weak point of the electroless lamp ballasting device in the prior art is: can not carry out continuously and accurately adjusting to electrodeless lamp, promptly dimming effect is undesirable.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of simple in structure, electrodeless lamp dimming ballast of being suitable for continuously and accurately adjusting.
In order to solve the problems of the technologies described above, the invention provides a kind of electrodeless lamp dimming ballast, comprising: removable magnetic core, be located in the coupler of ballast; DC speed-reducing is connected in an end of removable magnetic core through screw rod, is used to control the displacement of removable magnetic core and the inductance value of controlling described coupler; Lamp power voltage change-over circuit, the detectable voltage signals that is used to detect the current power of electrodeless lamp and exports the relevant voltage value; The command voltage change-over circuit, the command voltage signal that is used to receive the external dimmer instruction and exports the relevant voltage value; Voltage ratio reaches drive circuit, be used for more described detectable voltage signals and the command voltage voltage of signals is poor, and drive described DC speed-reducing work according to this voltage difference, instruct corresponding with the power that makes electrodeless lamp by the inductance value that changes coupler with described light modulation.
Further, described voltage ratio reaches drive circuit and is connected with outage constant current accessory power supply; Described command voltage change-over circuit and voltage ratio and between the drive circuit are provided with the power-off restoration control circuit; This power-off restoration control circuit is used for after the ballast outage, control the magnitude of voltage of the cut-offing instruction voltage signal of the magnitude of voltage of detectable voltage signals of described lamp power voltage change-over circuit output and the output of command voltage change-over circuit, making voltage ratio reach drive circuit is the described DC speed-reducing work of power drives with outage constant current accessory power supply, is moved to the optimum start-up position to control removable magnetic core.
Technique scheme of the present invention has the following advantages compared to existing technology: electrodeless lamp dimming ballast of the present invention by continuously changing the output stage impedance of electrodeless lamp electronic ballast, thereby reaches the purpose of continuous light tuning.The present invention is connected with light modulation command voltage change-over circuit through interface by various external light modulation instructions (time-delay button, two gear switch, potentiometer, light-controller, human body infrared switch, acoustic control head, 0V-10V control voltage etc.).When any dimming interface was imported above-mentioned control command, the light modulation closed control circuit can be given an order to light modulation actuator according to the light modulation instruction, changes power output thereby regulate the outputting inductance impedance parameter, reaches and can stablize the purpose of light modulation continuously arbitrarily.Therefore, have characteristics simple in structure, as to be suitable for continuously and accurately adjusting.
Description of drawings:
For the easier quilt of content of the present invention is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the present invention is further detailed explanation, wherein:
Fig. 1 is the structural representation that turn to removable magnetic core in control ballast outputting inductance of the electrodeless lamp dimming ballast among the embodiment by the screw rod of control connection on the DC speed-reducing output shaft;
Fig. 2 is the structured flowchart of the electrodeless lamp dimming ballast among the embodiment;
Fig. 3 is the circuit theory diagrams of the electrodeless lamp dimming ballast among the embodiment.
Embodiment:
See Fig. 1-3, the electrodeless lamp dimming ballast of present embodiment comprises: electromagnetic compatibility circuit, rectification circuit, circuit of power factor correction, auxiliary circuit, drive circuit, light modulation closed control circuit, power-off restoration control circuit, light modulation actuator, output-stage circuit (being coupler 1).
Wherein, light modulation actuator comprises: be located at the removable magnetic core 2 in the coupler 1 of ballast; DC speed-reducing M is connected in an end of removable magnetic core 2 through screw rod 4, is used to control the displacement of removable magnetic core 2 and the inductance value of controlling described coupler 1; Coupler 1 and DC speed-reducing M are located on the skeleton 3.
The light modulation closed control circuit comprises: lamp power voltage change-over circuit, the detectable voltage signals that is used to detect the current power of electrodeless lamp and exports the relevant voltage value; The command voltage change-over circuit, the command voltage signal that is used to receive the external dimmer instruction and exports the relevant voltage value; Voltage ratio reaches drive circuit, be used for more described detectable voltage signals and the command voltage voltage of signals is poor, and drive described DC speed-reducing M work according to this voltage difference, instruct corresponding with the power that makes electrodeless lamp by the inductance value that changes coupler 1 with described light modulation.
Described voltage ratio reaches drive circuit and is connected with outage constant current accessory power supply; Described command voltage change-over circuit and voltage ratio and between the drive circuit are provided with the power-off restoration control circuit; This power-off restoration control circuit is used for after the ballast outage, control the magnitude of voltage of command voltage signal output part P1 (hereinafter to be referred as " P1 the point ") output of the detectable voltage signals output P2 (hereinafter to be referred as " P2 point ") of described lamp power voltage change-over circuit and command voltage change-over circuit, make voltage ratio and drive circuit be the described DC speed-reducing M work of power drives with outage constant current accessory power supply, be moved to the optimum start-up position with what control removable magnetic core 2.
The button control circuit of described command voltage change-over circuit for being made of analog circuit or digital circuit, the voltage output that different buttons are corresponding different works in corresponding power to control electrodeless lamp.Described command voltage change-over circuit also can be made of single-chip microcomputer or application-specific integrated circuit (ASIC), and it exports the correspondent voltage value according to external command, with the power of control.
Described voltage ratio reaches drive circuit and comprises: pair of operational amplifiers OP1 and OP2, this in-phase input end to operational amplifier OP1 and OP2 links to each other with the command voltage signal output part P1 of described command voltage change-over circuit and the detectable voltage signals output P2 of lamp power voltage change-over circuit respectively, and this output to operational amplifier OP1 and OP2 links to each other with the positive and negative power end of described DC speed-reducing M respectively.Wherein: the command voltage signal output part P1 of command voltage change-over circuit links to each other with the in-phase input end of the first operational amplifier OP1, the detectable voltage signals output P2 of lamp power voltage change-over circuit links to each other with the in-phase end of the second operational amplifier OP2, be provided with feedback resistance R3 between the output of the first operational amplifier OP1 and the end of oppisite phase, be provided with feedback resistance R4 between the output of the second operational amplifier OP2 and the end of oppisite phase, be provided with feedback resistance R1 between the end of oppisite phase of the in-phase end of the first operational amplifier OP1 and the second operational amplifier OP2, be provided with feedback resistance R2 between the in-phase end of the end of oppisite phase of the first operational amplifier OP1 and the second operational amplifier OP2.Be provided with current potential between the in-phase end of the second operational amplifier OP2 and the ground and keep capacitor C 1.
See Fig. 3, described lamp power voltage change-over circuit comprises: the 3rd operational amplifier OP3, triode Q1, potentiometer W1, capacitor C 3 and C4, resistance R 5 and R6, diode D2 and D3.Wherein, Port end is lamp power voltage detection input, links to each other with the multiplier or the instrument transformer that are used to detect described representative lamp power voltage.The 3rd operational amplifier OP3 is a voltage follower circuit, the in-phase end of its output termination second operational amplifier OP2, the output of the 3rd operational amplifier OP3 links to each other with end of oppisite phase, the in-phase end of the 3rd operational amplifier OP3 links to each other with the brush end of potentiometer W1, connect an end of the resistive element among the potentiometer W1 behind Port end series diode D2 and the D3, the collector electrode of another termination triode Q1 of the resistive element among the potentiometer W1, the grounded emitter of triode Q1, be in series with a pair of divider resistance R5 and R6 between the negative electrode of diode D2 and the ground, the contact of divider resistance R5 and R6 links to each other with the base stage of triode Q1, filter capacitor C3 and C4 ground connection.The two ends of the resistive element among the power end of the 3rd operational amplifier OP3 and the potentiometer W1 link to each other.
Described power-off restoration control circuit comprises: resistance R 7, R8, R9 and R10, potentiometer W2, triode Q2, voltage-stabiliser tube ZD1 and technotron Q3.
When electrodeless lamp was normally lighted, triode Q2 was in conducting state, and technotron Q3 ends, and the P3 point among Fig. 3 can't be delivered to the P1 point through the voltage stabilizing value that voltage-stabiliser tube ZD1 sets.
When outage, triode Q2 ends, technotron Q3 conducting, and the voltage stabilizing value that the P3 point is set through voltage-stabiliser tube 431 can be delivered to the P1 point.And the voltage that this moment, P2 was ordered is the preceding lamp power voltage retention value of outage; At this moment, P1 point and the P2 voltage official post voltage ratio of ordering and drive circuit control removable magnetic core and be moved to the optimum start-up position.12V DC power supply is wherein provided by described outage constant current accessory power supply.
In other embodiments, described power-off restoration control circuit can be realized by digital circuit or intelligence control circuit.After outage, described digital circuit or intelligence control circuit are suitable for making described P1 point to remain on a setting voltage value, thus make voltage ratio and drive circuit control removable magnetic core and be moved to the optimum start-up position.
Described lamp power voltage change-over circuit mainly is to detect the current power of electrodeless lamp by the method that detects described representative lamp power voltage.During concrete enforcement, also can adopt the method for measuring electrodeless lamp brightness to measure its power.Promptly adopt photoelectrical coupler and the voltage amplifier circuit that links to each other with this photoelectrical coupler to constitute described lamp power voltage change-over circuit, the output of voltage amplifier circuit is described detectable voltage signals output P2.
The course of work of the electrodeless lamp dimming ballast of present embodiment: when light modulation is instructed when interface is imported, the command voltage change-over circuit can produce stable and a power corresponding voltage value at as shown in Figure 2 P1 point, and this value is compared through the voltage that voltage ratio reaches the representative lamp power that drive circuit and P2 order.This voltage difference of 2 is amplified rear drive DC speed-reducing M forward or reverse through the comparator that voltage ratio reaches in the drive circuit, the outputting inductance amount of ballast is changed, the power of electrodeless lamp changes and approaches the corresponding power of light modulation instruction thereupon, at this moment, the voltage that the voltage approaches P1 that P2 is ordered is ordered, after reaching the balance of voltage, DC speed-reducing M stall, the light modulation process finishes.
Described power-off restoration control circuit is used to satisfy the reliable startup of electrodeless lamp.When no matter cutting off the power supply the power of electrodeless lamp what are (the motor inductance value of regulating outputting inductance be what, where) as long as cut off the power supply, the equal may command variable inductance of reset control circuit resets, and (this optimum position is meant: when opening electrodeless lamp again in the optimum start-up position, the inductance value of coupler is in optimum value, to produce the optimum resonance coupling effect).
During work, when when outage, the power-off restoration control circuit power voltage that detects electrodeless lamp was zero, the power-off restoration control circuit is controlled the voltage that P1 orders immediately and is in a set point (no matter how much voltage that control command control P1 is ordered before the outage is), this value compares and enlarges rear drive DC speed-reducing M forward or reverse with the voltage that the preceding P2 that cuts off the power supply is ordered, coupler 1 is resetted in the optimum start-up position, and outage back P2 point voltage have the maintenance function.Electric energy after the outage is supplied with has storage capacitor C2 and constant current accessory power supply to finish.
Obviously, the foregoing description only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (2)
1. an electrodeless lamp dimming ballast is characterized in that: comprise removable magnetic core, be located in the coupler of ballast; DC speed-reducing is connected in an end of removable magnetic core through screw rod, is used to control the displacement of removable magnetic core to control the inductance value of described coupler; Lamp power voltage change-over circuit, the detectable voltage signals that is used to detect the current power of electrodeless lamp and exports the relevant voltage value; The command voltage change-over circuit, the command voltage signal that is used to receive the external dimmer instruction and exports the relevant voltage value; Voltage ratio reaches drive circuit, be used for more described detectable voltage signals and the command voltage voltage of signals is poor, and drive described DC speed-reducing work according to this voltage difference, instruct corresponding with the power that makes electrodeless lamp by the inductance value that changes coupler with described light modulation.
2. electrodeless lamp dimming ballast according to claim 1 is characterized in that: also comprise outage constant current accessory power supply and power-off restoration control circuit; This power-off restoration control circuit is used for after the ballast outage, control the magnitude of voltage of the cut-offing instruction voltage signal of the magnitude of voltage of detectable voltage signals of described lamp power voltage change-over circuit output and the output of command voltage change-over circuit, making voltage ratio reach drive circuit simultaneously is the described DC speed-reducing work of power drives with outage constant current accessory power supply, is moved to the optimum start-up position to control removable magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105044347A CN101969733A (en) | 2010-10-13 | 2010-10-13 | Electrodeless lamp dimming ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105044347A CN101969733A (en) | 2010-10-13 | 2010-10-13 | Electrodeless lamp dimming ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101969733A true CN101969733A (en) | 2011-02-09 |
Family
ID=43548784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105044347A Pending CN101969733A (en) | 2010-10-13 | 2010-10-13 | Electrodeless lamp dimming ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101969733A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595748A (en) * | 2011-12-20 | 2012-07-18 | 无锡市爱诺泰能源科技有限公司 | Stepless variable power inductive ballast |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053835U (en) * | 1988-05-11 | 1990-02-28 | 肖治国 | Matching apparatus for energy-saving, prolonged service life and stepless light controlling fluorescent lamp |
| US20030102816A1 (en) * | 2000-12-15 | 2003-06-05 | Buij Arnold Willem | Ballast and method of feeding a flourescent lamp |
| CN1537404A (en) * | 2001-08-02 | 2004-10-13 | 皇家飞利浦电子股份有限公司 | Ballast with voltage and current sensor |
| US20050229878A1 (en) * | 2004-03-08 | 2005-10-20 | Taylor G B | Electronic valve actuator |
| CN1874639A (en) * | 2006-05-26 | 2006-12-06 | 浙江大学 | Constant power control method and device of electronic ballast |
| CN201830539U (en) * | 2010-10-13 | 2011-05-11 | 金坛市时空电器照明有限公司 | Dimming ballast of electrodeless lamp |
| CN201860501U (en) * | 2010-10-13 | 2011-06-08 | 金坛市时空电器照明有限公司 | Series-type electrodeless lamp |
-
2010
- 2010-10-13 CN CN2010105044347A patent/CN101969733A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053835U (en) * | 1988-05-11 | 1990-02-28 | 肖治国 | Matching apparatus for energy-saving, prolonged service life and stepless light controlling fluorescent lamp |
| US20030102816A1 (en) * | 2000-12-15 | 2003-06-05 | Buij Arnold Willem | Ballast and method of feeding a flourescent lamp |
| CN1537404A (en) * | 2001-08-02 | 2004-10-13 | 皇家飞利浦电子股份有限公司 | Ballast with voltage and current sensor |
| US20050229878A1 (en) * | 2004-03-08 | 2005-10-20 | Taylor G B | Electronic valve actuator |
| CN1874639A (en) * | 2006-05-26 | 2006-12-06 | 浙江大学 | Constant power control method and device of electronic ballast |
| CN201830539U (en) * | 2010-10-13 | 2011-05-11 | 金坛市时空电器照明有限公司 | Dimming ballast of electrodeless lamp |
| CN201860501U (en) * | 2010-10-13 | 2011-06-08 | 金坛市时空电器照明有限公司 | Series-type electrodeless lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595748A (en) * | 2011-12-20 | 2012-07-18 | 无锡市爱诺泰能源科技有限公司 | Stepless variable power inductive ballast |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101882879B (en) | Circuit converting constant current source to constant voltage source and light using same | |
| CN104168696B (en) | Compatible type LED power circuit | |
| CN208258102U (en) | A kind of electronic cigarette rapid heating circuit and electronic cigarette | |
| CN101447737B (en) | Constant power output direct current transforming circuit | |
| CN201860501U (en) | Series-type electrodeless lamp | |
| CN106465502A (en) | Driver for driving a load | |
| CN201830539U (en) | Dimming ballast of electrodeless lamp | |
| CN101969733A (en) | Electrodeless lamp dimming ballast | |
| CN203554294U (en) | Power supply circuit and LCD television | |
| CN102416519A (en) | Electric shock protection device for electric welding machine | |
| CN208029142U (en) | The high-power multistage regulating current device of one kind and flicker free LED light lighting system | |
| CN201332531Y (en) | DC (direct current) converting circuit | |
| CN101404848A (en) | Electronic ballast and general lamp seat having the same | |
| CN102612195B (en) | LED (light emitting diode) constant current driving circuit and LED lamp using same | |
| CN202411628U (en) | Anti-electric shock protective device of electric welding machine | |
| CN207403578U (en) | A kind of circuit for being used to indicate alternating current-direct current charging gun state | |
| CN207737194U (en) | Vehicle-mounted light adjusting controller | |
| CN210781438U (en) | Brightness adjusting system of lamp | |
| CN113839457A (en) | Charging circuit for intelligent charger | |
| CN103369764B (en) | A LED driving circuit and a LED lamp | |
| CN110446295A (en) | A kind of remote-controlled dimmer circuit | |
| CN205812472U (en) | A kind of radio-frequency light modulator using single live wire powering mode | |
| CN104470039B (en) | LED driver | |
| CN209824097U (en) | LCC resonance dimming control circuit | |
| CN109870954A (en) | A kind of fence sender unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110209 |