CN201976329U

CN201976329U - Electrodeless lamp synthesized by DC low voltage power source four push-pull power

Info

Publication number: CN201976329U
Application number: CN2011201013405U
Authority: CN
Inventors: 张根清; 阮树成
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-03
Filing date: 2011-04-03
Publication date: 2011-09-14
Anticipated expiration: 2021-04-03

Abstract

The utility model relates to the field of electronic technology and provides an electrodeless lamp synthesized by DC low voltage power source four push-pull power, comprising a DC low voltage power source, an inverter and electrodeless lights. The inverter includes four push-pull oscillators, three addition couplers, a light tube circuit, an adjustable pulse impulsator and an over-load checking protection circuit. The four push-pull oscillation powers synthesize pulses to adjust light in a big range. The output power is connected into the light tube circuit to produce high light efficiency. The utility model has the advantages of: unique circuit and high efficiency, and is widely used for larger power electrodeless lamps under the conditions that no alternating power supply or non-convenient power supply of cars, trains, subways and ships.

Description

Dc low voltage power supply four push-pull oscillator power synthesize electrodeless lamp

Technical field

The utility model relates to electronic technology field, specifically is the synthetic electrodeless lamps of a kind of Dc low voltage power supply four push-pull oscillator power.

Background technology

The occasion that does not have AC power or the open-air leisure power supply inconvenience of encamping at automobile, train 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 synthetic electrodeless lamp of a kind of Dc low voltage power supply four push-pull oscillator power of 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 four pusb pull oscilators, three addition couplers, tube circuit, adjustable pulse generator and overload detection protective circuit are formed, three addition couplers are divided into the first addition coupler, the second addition coupler and third phase add coupler, four pusb pull oscilators are divided into pusb pull oscilator 6a, pusb pull oscilator 6b and pusb pull oscilator 6c, pusb pull oscilator 6d, respectively by ferrimagnetism transformer T1, T2 and T3, T4 primary inductance shunt capacitance is a resonant tank, 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 constitutes pusb pull oscilator to managing base resistance quiescent biasing and electric capacity positive feedback, two high-power oscillating tube base stages each and connect control signal mouthpiece collector electrode, the mouthpiece base stage, collector electrode connects voltage negative feedback biasing resistor, grounded emitter, the adjustable pulse generator output signal inserts four pusb pull oscilator mouthpiece control light modulations, pusb pull oscilator 6a, pusb pull oscilator 6b power output is respectively by ferrimagnetism transformer T1, the anti-phase access first addition coupler primary inductance single order power of T2 secondary inductance is synthetic, pusb pull oscilator 6c and pusb pull oscilator 6d power output are respectively by ferrimagnetism transformer T3, the anti-phase access second addition coupler primary inductance single order power of T4 secondary inductance is synthetic, it is synthetic that the first addition coupler and the anti-phase access third phase of the second addition coupler secondary inductance add coupler primary inductance second order power, third phase adds the coupler secondary inductance access tube circuit that boosts, the tube circuit input also connects the resistance that absorbs the spike series connection, electric capacity, connect the series resonant circuit inductance then, electric capacity, connect two coupling coils again, two coupling coil magnet ring is 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 and insert four pusb pull oscilator mouthpiece control oscillating tubes, four pusb pull oscilator ferrimagnetism transformer T1, T2 and T3, T4 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, the potentiometer two ends diode of connecting respectively, and the resistance of at one end also connecting, be attempted by the 7th pin of time-base integrated circuit then, potentiometer mid point slip termination charging capacitor, time-base integrated circuit is connected into the continuously adjustable pulse generator of pulse duty factor on a large scale, inserts four pusb pull oscilator mouthpiece control light modulations through triode power amplification output signal.

The utility model produces useful good effect: synthetic by four pusb pull oscilator second order power of Dc low voltage power supply power supply, obtain the high light efficiency of high-power lamp load, pulse is light modulation on a large scale, capacitance-resistance cross-couplings push-pull oscillator power is synthetic 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 circuit

Fig. 3 four pushes away hunting power synthetic and overload detection protection and tube circuit

Fig. 4 adjustable pulse generator circuit

Specific implementation method

With reference to Fig. 1; 2; 3; (Fig. 2 is an example with pusb pull oscilator 6a circuit; all the other pusb pull oscilator circuit are all identical) 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 four pusb pull oscilators 6; three addition couplers 5; tube circuit 3; adjustable pulse generator 4 and overload detection protective circuit 2 are formed; three addition couplers 5 are divided into the first addition coupler 5a; the second addition coupler 5b and third phase add coupler 5c; four pusb pull oscilators 6 are divided into pusb pull oscilator 6a; pusb pull oscilator 6b and pusb pull oscilator 6c; pusb pull oscilator 6d; respectively by ferrimagnetism transformer T1; T2 and T3; T4 primary inductance L1 shunt capacitance C0 is a resonant tank; 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 is to managing base resistance R1; R2 quiescent biasing and capacitor C 1; the C2 positive feedback constitutes pusb pull oscilator; two high-power oscillating tube Q1; the Q2 base stage each and meet control signal mouthpiece Q3; the Q4 collector electrode; Q3; the Q4 base stage; collector electrode meets voltage negative feedback biasing resistor R4; R5; grounded emitter; adjustable pulse generator 4 output signals insert four pusb pull oscilator 6 mouthpiece Q3; Q4 base resistance R7; R10 and capacitor C 5 control light modulations; pusb pull oscilator 6a; pusb pull oscilator 6b power output is respectively by ferrimagnetism transformer T1; the anti-phase access first addition coupler 5a primary inductance single order power of T2 secondary inductance is synthetic; pusb pull oscilator 6c and pusb pull oscilator 6d power output are respectively by ferrimagnetism transformer T3; the anti-phase access second addition coupler 5b primary inductance single order power of T4 secondary inductance is synthetic; it is synthetic that the first addition coupler 5a and the anti-phase access third phase of the second addition coupler 5b secondary inductance add coupler 5c primary inductance second order power; third phase adds coupler 5c secondary inductance and boosts and insert tube circuit 3; tube circuit 3 inputs also connect the resistance R 14 that absorbs the spike series connection; capacitor C 8; connect series resonant circuit inductance L 3 then; capacitor C 7; connect two coupling coil L4 again; L5; two coupling coil magnet ring is enclosed within on the electrodeless fluorescent tube G; overload detection protective circuit 2 by the lamp load electric current through magnet ring inductance L 6 induced potential diode VD3 peak detections; voltage is through filter capacitor C9; resistance R 15; again through current-limiting resistance R8; R9 control interface pipe Q3; Q4 oscillating tube Q1; Q2; four pusb pull oscilator ferrimagnetism transformer T1; T2 and T3; T4 primary inductance centre cap inserts Dc low voltage power supply 1 through high frequency choke inductance L 2 and shunt capacitance C6; simultaneously, adjustable pulse generator 4 power ends insert Dc low voltage power supply 1.

Overload detection protective circuit 2, when lamp load short circuit or fluorescent tube loose contact produce big electric current, overload detection voltage makes Q3, Q4 saturation conduction, and oscillating tube Q1, Q2 play a protective role by failure of oscillation.Diode VD1, VD2 protection oscillating tube is avoided high back-pressure and is punctured.

Two high-power oscillating tube Q1, Q2 of capacitance-resistance cross-couplings pusb pull oscilator are with zero quiescent current half period conducting, the above odd harmonic in opposite three rank of collector current phase place is zero, not only efficient, and have even-order harmonic and cancel out each other, reduce inverter power device heat power consumption, for this reason, lower be suppressed at the feedback of resonant inductance centre cap and connect power supply and seal in high frequency choke inductance and shunt capacitance, suppress the even-order harmonic power consumption, make lamp load be output as pure sine wave.

General large power triode constitutes the fluorescent tube about push-pull oscillator mesh power 30W, when requiring bigger power output, when for example mating the 120W lamp load, only several the direct parallel operations of device can not be satisfactory, adopt four push-pull oscillator power synthetic effects obvious, the power output stack can be satisfied specification requirement, by two addition coupler 5a, it is synthetic that 5b pushes away the mutual anti-phase exciting power of vibration power output with four respectively, again with two addition coupler 5a, the conversion of 5b output current doubles summation, and to deliver to the 3rd addition coupler 5c power synthetic, and the high-power fluorescent tube that ignites of boosting is luminous.When three balance resistance R11, R12 and R13 equate at two synthetic electric currents of power, no power waste.

Tube circuit is connected on third phase and adds coupler 5c secondary inductance, boosts to export and connect Resistor-Capacitor Unit R14, C8 absorption negative peak high-voltage pulse, suppresses the level and smooth lamplight brightness of noise radiation.Series resonant circuit inductance L 3, capacitor C 7 meet two coupling coil L4, L5, and the coil magnet ring is placed in closed fluorescent tube G, and the fluorescent tube light efficiency was the highest when series resonant circuit frequency and four pushed away oscillator frequency and equates, easy startup.

Fig. 4, 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 17, and insert power supplys 1 by resistance R 16 at the 7th pin, potentiometer RP1 mid point slip termination charging capacitor C10, slide potentiometer constitutes continuously adjustable pulse generator, inserts mouthpiece Q3, the Q4 of four pusb pull oscilators 6 through triode Q5 power amplification output.Q3, Q4 end during low level, oscillating tube Q1 and Q2 conducting work, and lamp is lighted, Q3, Q4 conducting during high level, oscillating tube Q1 and Q2 end, and lamp extinguishes, and the time of lighting is determined by pulse duration.Therefore, extinguish and light again alternately with the certain frequency pulse, the control impuls duty ratio is promptly controlled four pusb pull oscilator average output powers, realizes light modulation.

Because potentiometer RP1 resistance is the VD4 conducting during much larger than resistance R 16, R17 charging, VD5 conducting during discharge, the EDM Generator of Adjustable Duty Ratio scope is very big.Capacitor C 11, C12 bypass effect.Resistance R 18, R20 current limliting, R19 is a triode Q5 load resistance.

Embodiment Dc low voltage power supply voltage 30V, four push-pull oscillator frequency 165KHZ, the electrodeless lamp of light modulation pulse minimum duty cycle output average power coupling 120W, light modulation pulse maximum duty cycle average power 30W, light modulation obviously changes light intensity, plays the power consumption effect of saving when reducing light intensity.

Claims

1. Dc low voltage power supply four push-pull oscillator power synthesize electrodeless lamp; comprise by forming Dc low voltage power supply and inverter and electrodeless fluorescent tube; it is characterized in that: comprise that also inverter is by four pusb pull oscilators; three addition couplers; adjustable pulse generator; tube circuit and overload detection protective circuit are formed; three addition couplers are divided into the first addition coupler; the second addition coupler and third phase add coupler; four pusb pull oscilators are divided into pusb pull oscilator (6a); pusb pull oscilator (6b) and pusb pull oscilator (6c); pusb pull oscilator (6d); respectively by ferrimagnetism transformer (T1); (T2) and (T3); (T4) the primary inductance shunt capacitance is a resonant tank; 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 constitutes pusb pull oscilator to managing base resistance quiescent biasing and electric capacity positive feedback; two high-power oscillating tube base stages also connect control signal mouthpiece collector electrode; the mouthpiece base stage; collector electrode connects voltage negative feedback biasing resistor; grounded emitter; the adjustable pulse generator output signal inserts the light modulation of four pusb pull oscilator mouthpieces; pusb pull oscilator (6a); pusb pull oscilator (6b) power output is respectively by ferrimagnetism transformer (T1); (T2) the anti-phase access first addition coupler primary inductance single order power of secondary inductance is synthetic; pusb pull oscilator (6c) and pusb pull oscilator (6d) power output are respectively by ferrimagnetism transformer (T3); (T4) the anti-phase access second addition coupler primary inductance single order power of secondary inductance is synthetic; it is synthetic that the first addition coupler and the anti-phase access third phase of the second addition coupler secondary inductance add coupler primary inductance second order power; third phase adds the coupler secondary inductance access tube circuit that boosts; the tube circuit input also connects the resistance that absorbs the spike series connection; electric capacity; connect the series resonant circuit inductance then; electric capacity; connect two coupling coils again; two coupling coil magnet ring is enclosed within on the closed 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 and insert four pusb pull oscilator mouthpiece control oscillating tubes; four pusb pull oscilator ferrimagnetism transformers (T1); (T2) and (T3); (T4) the 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. Dc low voltage power supply four push-pull oscillator power according to claim 1 synthesize electrodeless lamp, 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, and insert power supply through another resistance at the 7th pin, potentiometer mid point slip termination charging capacitor, slide potentiometer constitutes continuously adjustable pulse generator, inserts the mouthpiece control light modulation of four pusb pull oscilators through triode power amplification output.