CN201976327U - Push-pull oscillating electrodeless lamp with direct-current low-voltage power supply - Google Patents
Push-pull oscillating electrodeless lamp with direct-current low-voltage power supply Download PDFInfo
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- CN201976327U CN201976327U CN2011201013388U CN201120101338U CN201976327U CN 201976327 U CN201976327 U CN 201976327U CN 2011201013388 U CN2011201013388 U CN 2011201013388U CN 201120101338 U CN201120101338 U CN 201120101338U CN 201976327 U CN201976327 U CN 201976327U
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Abstract
The utility model relates to the field of electronic technology, and discloses a push-pull oscillating electrodeless lamp with a direct-current low-voltage power supply, which comprises the direct-current low-voltage power supply, an inverter and an electrodeless lamp tube. Further, the inverter consists of a push-pull oscillator, an adjustable pulse generator, a lamp tube circuit and an overload detecting and protecting circuit. The pulse dims light in a large range, and the output power is connected with the lamp tube circuit to generate high light efficiency. The push-pull oscillating electrodeless lamp with the direct-current low-voltage power supply has a unique and efficient circuit, and is widely applied to the higher-power electrodeless lamp illumination for cars, trains, metros and ships on the occasions without alternating-current power supplies or with inconvenient power supply.
Description
Technical field
The utility model relates to electronic technology field, specifically is the electrodeless lamp of a kind of Dc low voltage power supply push-pull oscillator.
Background technology
The occasion that does not have AC power or the open-air leisure power supply inconvenience of encamping at automobile, train, subway and ship, adopt the electrodeless lamp of Dc low voltage power supply can produce stronger illumination brightness, the high-frequency energy coupling coil excites the tube wall plasma to produce light by the fluorescent material opto-electronic conversion and penetrates, photoelectric conversion efficiency is higher, light is soft pleasant, long service life.Yet electrodeless lamp is that a kind of gas discharge produces light, and the back stable operating voltage that ignites is 90V-140V, and lamp current is at least at hundreds of milliamperes.Require the vibration power output enough big, electric current just must increase when supply voltage was low.And, big current oscillation triode power consumption temperature rise causes that pipe voltage, electric current change, and heavy current warming also makes coil magnetic permeability decline inductance value reduce simultaneously, and serious generation saturation inductors becomes very little, and then influence light tube electric voltage and electric current and change lamp luminescence brightness instability.Even burn out device.In addition, set up dimming function and can be fit to different illumination needs, when not needing floodlighting, reduce light and penetrate intensity, reduce light pollution to save power consumption.
Summary of the invention
The purpose of this utility model provides the Dc low voltage power supply power supply, drags the electrodeless lamp of a kind of Dc low voltage power supply push-pull oscillator than the high-power lamp load.
The utility model technical solution is: comprise by Dc low voltage power supply and inverter and electrodeless fluorescent tube, inverter is by pusb pull oscilator, adjustable pulse generator and tube circuit, the overload detection protective circuit is formed, pusb pull oscilator is a resonant tank by ferrimagnetism primary inductance shunt capacitance, the resonant tank two ends respectively and connect two high-power oscillating tube collector electrodes, emitter series resistance ground connection, resonant tank two ends cross-couplings also in parallel is to pipe base resistance quiescent biasing and electric capacity positive feedback are constituted pusb pull oscilator, two oscillating tube base stages also connect control signal mouthpiece collector electrode, mouthpiece base stage and collector electrode connect voltage negative feedback biasing resistor, grounded emitter, adjustable pulse generator output inserts a mouthpiece base resistance control of pusb pull oscilator light modulation, the pusb pull oscilator power output inserts two coupling coils of tube circuit by ferrimagnetism transformer secondary output inductance boost, two coupling coil ferrite beads are enclosed within on the electrodeless fluorescent tube, the overload detection protective circuit by the lamp load electric current through magnet ring inductance induced potential diode peak detection, detect voltage access interface management and control system oscillating tube, ferrimagnetism primary inductance centre cap inserts Dc low voltage power supply through high frequency choke inductance and shunt capacitance, simultaneously, the adjustable pulse generator power end inserts Dc low voltage power supply;
Wherein, adjustable pulse generator is made up of time-base integrated circuit, potentiometer and resistance, charging capacitor and diode, potentiometer one end series diode, the second and the 6th pin of another termination time-base integrated circuit, and at time-base integrated circuit the 7th pin and connect diode in series and resistance, insert power supply at the 7th pin through another resistance, potentiometer mid point slip termination charging capacitor, slide potentiometer constitutes continuously adjustable pulse generator, inserts the mouthpiece pulse width control light modulation of pusb pull oscilator through triode power amplification output.
The utility model produces useful good effect: the pusb pull oscilator by the Dc low voltage power supply power supply obtains high-power lamp load light efficiency, pulse is light modulation on a large scale, the push-pull oscillator of capacitance-resistance cross-couplings is not only efficient, the even-order harmonic output pure sine wave of cancelling out each other, reduce the inverter power device power consumption, be widely used in the occasion illumination that does not have AC power or power supply inconvenience.
Description of drawings
Fig. 1 technical solutions of the utility model functional-block diagram
Fig. 2 pusb pull oscilator and tube circuit and overload detection protective circuit
Fig. 3 adjustable pulse generator circuit
Specific implementation method
With reference to Fig. 1; Fig. 2; the utility model specific implementation method and embodiment: comprise by Dc low voltage power supply 1 and inverter and electrodeless fluorescent tube G; inverter is by pusb pull oscilator 4; adjustable pulse generator 3 and tube circuit 5; overload detection protective circuit 2 is formed; pusb pull oscilator 4 is a resonant tank by ferrimagnetism primary inductance L 1 shunt capacitance C0; the resonant tank two ends respectively and meet two high-power oscillating tube Q1; the Q2 collector electrode; emitter series resistance R3; R6 ground connection; resonant tank two ends cross-couplings also in parallel arrives pipe base resistance R1; R2 quiescent biasing and capacitor C 1; the C2 positive feedback constitutes pusb pull oscilator; two oscillating tube Q1; the Q2 base stage each and meet control signal mouthpiece Q3; the Q4 collector electrode; mouthpiece base stage and collector electrode meet voltage negative feedback biasing resistor R4; R5; grounded emitter; adjustable pulse generator 3 output signals are through capacitor C 5; resistance R 7 inserts pusb pull oscilator 4 mouthpiece Q3 control light modulation; pusb pull oscilator 4 power outputs are boosted by ferrimagnetism transformer secondary output inductance L 2 and are inserted 5 two coupling coil L4 of tube circuit; L5; two coupling coil ferrite beads are enclosed within on the electrodeless fluorescent tube G; overload detection protective circuit 2 is controlled oscillating tube Q2 and Q1 by the lamp load electric current through magnet ring inductance L 3 induced potential diode VD3 peak detection voltage access interface pipe Q4; when lamp load short circuit or fluorescent tube loose contact produce big electric current; detect voltage and make the Q4 saturation conduction; oscillating tube Q1; Q2 shields by failure of oscillation.Ferrimagnetism primary inductance L 1 centre cap inserts Dc low voltage power supply 1 through high frequency choke inductance L 6 and shunt capacitance C6, and simultaneously, adjustable pulse generator 3 power ends insert Dc low voltage power supply 1.Diode VD1, VD2 protection oscillating tube Q1, Q2 avoid high back-pressure and puncture.
Two high-power oscillating tube Q1, Q2 of capacitance-resistance cross-couplings pusb pull oscilator are with zero quiescent current half period conducting, opposite three rank of collector current phase place and high-order odd harmonic are zero, not only efficient, even-order harmonic is cancelled out each other, reduce the inverter power device power consumption, lowlyer be suppressed at resonant inductance centre cap feedback and connect power series high frequency choke inductance, shunt capacitance over the ground, stop the power consumption of even-order harmonic, make lamp load output pure sine wave.
Fig. 3, light modulation pulse generator time-base integrated circuit IC1 adopts 555, light adjusting potentiometer RP1 one end series diode VD4, the second and the 6th pin of another termination time-base integrated circuit IC1, and at the 7th pin of time-base integrated circuit IC1 and meet diode in series VD5 and resistance R 11, and insert Dc low voltage power supplies 1 by resistance R 10 at the 7th pin, potentiometer RP1 mid point slip termination charging capacitor C7, slide potentiometer constitutes continuously adjustable pulse generator, inserts the mouthpiece Q3 of pusb pull oscilator 4 through triode Q5 power amplification output.Q3 ends during low level, oscillating tube Q1, Q2 conducting work, and lamp is lighted, Q3 conducting during high level, oscillating tube Q1, Q2 end, and lamp extinguishes, and the time of lighting is determined by pulse duration.Extinguish and light again alternately with the certain frequency pulse, the control impuls duty ratio is the control generator average output power, reaches the light modulation purpose.
Because potentiometer RP1 resistance is the VD4 conducting during much larger than resistance R 10, R11 charging, VD5 conducting during discharge, the EDM Generator of Adjustable Duty Ratio scope is very big.Capacitor C 8, C9 bypass over the ground, resistance R 12, R14 metering function, R13 is a triode Q5 load resistance.
Present embodiment Dc low voltage power supply output voltage 24V, pusb pull oscilator frequency 167KHZ, the electrodeless fluorescent tube of light modulation pulse minimum duty cycle output average power coupling 30W, light modulation pulse maximum duty cycle average power 7W, light modulation obviously changes the illumination light intensity, and reduction light is penetrated intensity and played saving power consumption.
Claims (2)
1. electrodeless lamp of Dc low voltage power supply push-pull oscillator; comprise by Dc low voltage power supply and inverter and electrodeless fluorescent tube; it is characterized in that: inverter is by pusb pull oscilator; adjustable pulse generator and tube circuit; the overload detection protective circuit is formed; pusb pull oscilator is a resonant tank by ferrimagnetism primary inductance shunt capacitance; the resonant tank two ends respectively and connect two high-power oscillating tube collector electrodes; emitter series resistance ground connection; resonant tank two ends cross-couplings also in parallel is to pipe base resistance quiescent biasing and electric capacity positive feedback are constituted pusb pull oscilator; two oscillating tube base stages also connect control signal mouthpiece collector electrode; mouthpiece base stage and collector electrode connect voltage negative feedback biasing resistor; grounded emitter; adjustable pulse generator output inserts a mouthpiece base resistance control of pusb pull oscilator light modulation; the pusb pull oscilator power output inserts two coupling coils of tube circuit by ferrimagnetism transformer secondary output inductance boost; two coupling coil ferrite beads are enclosed within on the electrodeless fluorescent tube; the overload detection protective circuit by the lamp load electric current through magnet ring inductance induced potential diode peak detection; detect voltage access interface management and control system oscillating tube; ferrimagnetism primary inductance centre cap inserts Dc low voltage power supply through high frequency choke inductance and shunt capacitance; simultaneously, the adjustable pulse generator power end inserts Dc low voltage power supply.
2. the electrodeless lamp of Dc low voltage power supply push-pull oscillator according to claim 1, it is characterized in that: adjustable pulse generator is by time-base integrated circuit, potentiometer and resistance, charging capacitor and diode are formed, potentiometer one end series diode, the second and the 6th pin of another termination time-base integrated circuit, and at time-base integrated circuit the 7th pin and connect diode in series and resistance, insert power supply at the 7th pin through another resistance, potentiometer mid point slip termination charging capacitor, slide potentiometer constitutes continuously adjustable pulse generator, inserts a mouthpiece control light modulation of pusb pull oscilator through triode power amplification output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201013388U CN201976327U (en) | 2011-04-03 | 2011-04-03 | Push-pull oscillating electrodeless lamp with direct-current low-voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201013388U CN201976327U (en) | 2011-04-03 | 2011-04-03 | Push-pull oscillating electrodeless lamp with direct-current low-voltage power supply |
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| Publication Number | Publication Date |
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| CN201976327U true CN201976327U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201013388U Expired - Fee Related CN201976327U (en) | 2011-04-03 | 2011-04-03 | Push-pull oscillating electrodeless lamp with direct-current low-voltage power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105322A (en) * | 2013-04-15 | 2014-10-15 | 阮雪芬 | Double-half-bridge injection phase-locking power synthesis fluorescent lamp |
-
2011
- 2011-04-03 CN CN2011201013388U patent/CN201976327U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105322A (en) * | 2013-04-15 | 2014-10-15 | 阮雪芬 | Double-half-bridge injection phase-locking power synthesis fluorescent lamp |
| CN104105322B (en) * | 2013-04-15 | 2017-01-04 | 阮雪芬 | Dual-half-bridge injection phase-locking power synthesis fluorescent lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20130403 |