CN203181376U - Direct-current low-voltage power supply injection-locking power synthesis high-voltage sodium lamp - Google Patents

Direct-current low-voltage power supply injection-locking power synthesis high-voltage sodium lamp Download PDF

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CN203181376U
CN203181376U CN 201320227525 CN201320227525U CN203181376U CN 203181376 U CN203181376 U CN 203181376U CN 201320227525 CN201320227525 CN 201320227525 CN 201320227525 U CN201320227525 U CN 201320227525U CN 203181376 U CN203181376 U CN 203181376U
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inductance
resistance
power
voltage
capacitor
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阮树成
阮雪芬
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Abstract

The utility model relates to the electric light source illumination technical field and specifically discloses a direct-current low-voltage power supply injection-locking power synthesis high-voltage sodium lamp. The high-voltage sodium lamp comprises a high-voltage sodium lamp tube, a direct-current low-voltage power supply, a reference crystal oscillator, an oscillation driving chip, a push-pull amplifier, a push-pull oscillator, an addition coupler, a lamp tube trigger circuit, a frequency modulation signal generator, and a lamp tube abnormal current detector. The oscillation driving chip is connected with the push-pull amplifier. A power synthesis operation is performed on an output power transformer T1 and a push-pull oscillator output power transformer T3 through the addition coupler. The synthesized power further undergoes a voltage boost and is then fed into the lamp tube trigger circuit for turning on the high-voltage sodium lamp tube. Signals of the reference crystal oscillator are injected into the oscillation driving chip through a frequency divider for phase locking. After the power synthesis of the push-pull amplifier output power transformer T1 and the push-pull oscillator output power transformer T3, a cross-coupling injection-locking frequency pulls a coherent synchronous locking phase for achieving large-power illumination. An excessive temperature rise of devices is prevented. Imbalanced oscillation frequency change power is prevented. Light rays are further prevented from deteriorating. The high-voltage sodium lamp is suitably used in illumination occasions of high-voltage sodium lamps powered by direct-current low-voltage heavy-current power supplies.

Description

Dc low voltage power supply is annotated the synthetic high-pressure sodium lamp of lock power
Technical field
The utility model relates to the electric source lighting technical field, specifically is that a kind of Dc low voltage power supply is annotated the synthetic high-pressure sodium lamp of lock power.
Background technology
The prior art electric ballast usually with LC or RC oscillator as the high-pressure sodium lamp electric light source, the frequency of oscillation that produces is subjected to the temperature change stability difference to influence the unstable light intensity of power to descend, especially the high-pressure sodium lamp of DC low-voltage, the power supply of big electric current, though this electric ballast, features simple structure, cost is low.Because supply voltage is low, obtain high-power illumination and certainly will increase electric current, and the too high frequency of oscillation that causes of hunting power pipe power consumption sharp increase temperature rise changes, the result can make light unbalance with the frequency change power magnitude.Simultaneously, big electric current descends by the high magnetic permeability of coil temperature rise, the little impedance trend zero of saturation inductors quantitative change, light fixture operating time and temperature rise direct ratio, device aging is accelerated in temperature rise, and gently then the unstable brightness of lamp luminescence descends, and is heavy then burn out device reduction of service life.Granted publication CN201957316U drags high-pressure sodium lamp by the stack of two vibration inverter powers, solves the restriction of device power capacity.But, require power to synthesize oscillating voltage phase place unanimity, it is unbalanced to overcome non-linear intermodulation power.
Summary of the invention
The purpose of this utility model provides the power supply of the big electric current of DC low-voltage, and the inversion phase locked a kind of Dc low voltage power supply of high frequency stabilization that vibrates is annotated the synthetic high-pressure sodium lamp of lock power.
The utility model technical solution is: comprise Dc low voltage power supply, the high-pressure sodium fluorescent tube, the benchmark crystal oscillator, frequency divider, vibration drives chip, push-pull amplifier, pusb pull oscilator, the addition coupler, the fluorescent tube circuits for triggering, FM signal generator, wherein, the benchmark crystal oscillator is by quartz-crystal resonator, two inverters and resistance, electric capacity is formed, first inverter input and output two ends cross-over connection biasing resistor, and respectively and connect ground capacity, simultaneously, the quartz-crystal resonator of cross-over connection series connection trimmer also, benchmark crystal oscillator output signal inserts frequency divider through second inverter, vibration drives chip and includes the RC oscillator, recommend amplification driving circuit, current detecting CS, lamp failure control SD, RC oscillator outer meeting resistance R 2, capacitor C 4Produce vibration, output meets two high-power MOS field effect transistor of push-pull amplifier Q through recommending amplification driving circuit 1, Q 2Grid, Q 1, Q 2Drain electrode also meets transformer T 1Inductance L 1Two ends, vibration drive the chip power end through resistance R 7Decompression capacitor C 8Bypass and inductance L 1Mid point is through inductance L 3, capacitor C 7Bypass connects DC low-voltage, Q 2The source series resistance R 6Ground connection is through resistance R 4, capacitor C 6Connect vibration and drive chip CS, pusb pull oscilator is by two high-power MOS field effect transistor Q 3, Q 4Drain electrode meets transformer T 3Inductance L 4Two ends, Q 3, Q 4Grid meets transformer T 2Inductance L 8Two ends, inductance L 8Mid point source ground field effect transistor in parallel Q 5Drain electrode and resistance R 8, R 14, inductance L 7, resistance R 10With transformer T 3Inductance L 5Closure, inductance L 4Mid point is through inductance L 9With shunt capacitance C 9Connect DC low-voltage, FM signal generator output sawtooth signal meets field effect transistor Q 5Grid suppresses light flash, Q 3, Q 4Source electrode is through earth resistance R 9The pressure drop sampling current connects resistance R 11, resistance R 11With the abnormal condition of lamp tube current detection signal through resistance R 12Meet field effect transistor Q 5Grid, abnormal condition of lamp tube current detector signal connect vibration and drive chip lamp failure control SD, push-pull amplifier output power transformer T 1With pusb pull oscilator output power transformer T 3Synthesize, boost through the fluorescent tube circuits for triggering high-pressure sodium lamp starter that ignites by addition coupler power, benchmark crystal oscillator signal injects vibration through frequency divider and drives chip RC oscillator C TThe end locking phase is by push-pull amplifier transformer T 1With pusb pull oscilator transformer T 3Annotate frequency locking rate traction coherent synchronization locking phase in the synthetic mutual coupling of addition coupler power, Dc low voltage power supply connects benchmark crystal oscillator, frequency divider, FM signal generator power end;
Wherein, FM signal generator is by time base chip IC 5, resistance R 20, R 21, R 22And capacitor C 15Multi-harmonic-oscillations, IC 5DIS end by resistance R 19Meet a pipe Q 6Grid, capacitor C 19Meet Q 6Source resistance R 18The bootstrapping positive feedback is exported linear sawtooth signal and is inserted two self-oscillation chip RC end frequency modulation inhibition light flash;
The fluorescent tube circuits for triggering by fluorescent tube one end through capacitor C 12, T 5Inductance L 13Meet addition coupler T 4Inductance L 11, capacitor C 12With inductance L 13Contact and connecting resistance R 16, ground capacity C 13, ground connection serial connection bidirectional trigger diode VD 2T 5Inductance L 12, the fluorescent tube other end passes lamp abnormality detection magnet ring mutual inductance inductance L 16Ground connection, high voltage direct current generator is by time base chip IC 5Vibration output meets transformer T 6Inductance L 14, through inductance L 15Boost diode VD 3Rectification, capacitor C 17, resistance R 24Filtering is by resistance R 25Connect capacitor C 12With inductance L 13Contact.
The utility model produces good effect: solve DC low-voltage low-voltage, big electric current power supply self-excitation and it and swash that two to push away the inversion high frequency stabilization Phase synchronization power that vibrates synthetic, reach single self-excitation or its sharp two high-power high voltage sodium lamp lighting that inverter is difficult to obtain that push away, avoid device temperature rise frequency of oscillation to change power imbalances, steady light increases the service life.
Description of drawings
Fig. 1 technical solutions of the utility model theory diagram
Fig. 2 benchmark crystal oscillating circuit
Fig. 3 Dc low voltage power supply is annotated the synthetic high-pressure sodium lamp circuit of lock power
Embodiment
With reference to Fig. 1,2,3, the utility model embodiment and embodiment: comprise Dc low voltage power supply 1, high-pressure sodium lamp 10, benchmark crystal oscillator 2, frequency divider 3, vibration drive chip 4, push-pull amplifier 5, pusb pull oscilator 6, addition coupler 7, fluorescent tube circuits for triggering 8, FM signal generator 9, abnormal condition of lamp tube current detector 11, wherein, benchmark crystal oscillator 2 is by quartz-crystal resonator JT, two inverter ics 1, IC 2And resistance R 1, capacitor C 0, C 1, C 2Form first inverter ic 1Input and output two ends cross-over connection biasing resistor R 1, and respectively and meet ground capacity C 1, C 2, simultaneously, go back cross-over connection series connection trimming capacitor C 0Quartz-crystal resonator JT, benchmark crystal oscillator 2 output signals are through second inverter ic 2 Insert frequency divider 3, vibration drives chip 4, i.e. IC 4IR2156 includes the RC oscillator, recommends amplification driving circuit, current detecting CS, lamp failure control SD, RC oscillator outer meeting resistance R 2, capacitor C 4Produce vibration, output inserts push-pull amplifier 5 high-power MOS field effect transistor Q through recommending amplification driving circuit 1, Q 2Grid, Q 1, Q 2Drain electrode also meets transformer T 1Inductance L 1Two ends, vibration drives chip 4 power end V CCThrough resistance R 7Decompression capacitor C 8Bypass and inductance L 1Mid point is through inductance L 3, capacitor C 7Bypass meets DC low-voltage+V, Q 2The source series resistance R 6Ground connection is through resistance R 4, capacitor C 6Meet the CS that vibration drives chip 4, pusb pull oscilator 6 is by two high-power MOS field effect transistor Q 3, Q 4Drain electrode meets transformer T 3Inductance L 4Two ends, Q 3, Q 4Grid meets transformer T 2Inductance L 8Two ends, inductance L 8Mid point source ground field effect transistor in parallel Q 5Drain electrode and biasing resistor R 8, R 14, inductance L 7, resistance R 10With transformer T 3Inductance L 5Closure, inductance L 4Mid point is through inductance L 9With shunt capacitance C 9Meet DC low-voltage+V, FM signal generator 9 output sawtooth signals meet field effect transistor Q 5Grid suppresses light flash, Q 3, Q 4Source electrode is through earth resistance R 9The pressure drop sampling current connects resistance R 11, resistance R 11With abnormal condition of lamp tube current detector 11 signals through resistance R 12Meet field effect transistor Q 5Grid, abnormal condition of lamp tube current detector 11 signals insert vibration and drive chip 4 lamp failures control SD, push-pull amplifier 5 output power transformer T 1With pusb pull oscilator 6 output power transformer T 3Synthetic by addition coupler 7 power, boost through fluorescent tube circuits for triggering 8 high-pressure sodium lamp 10 starters that ignite, benchmark crystal oscillator 2 signals inject the RC oscillator C that vibration drives chips 4 through frequency divider 3 TThe end locking phase is by push-pull amplifier 5 transformer T 1With pusb pull oscilator 6 transformer T 3Annotate frequency locking rate traction coherent synchronization locking phase in the synthetic mutual coupling of addition coupler 7 power, Dc low voltage power supply 1 connects benchmark crystal oscillator 2, frequency divider 3, FM signal generator 9 power ends.
IC 4Pin mark function: V CCPower end, C TMeet vibration timing capacitor C 4, R TMeet vibration timing resistor R 2, H ODrive Q 1, L ODrive Q 2, CS current detecting, SD lamp failure protection control, COM ground connection.
IC 5Pin mark function: V CCPower supply, the TL low level triggers, and the TH high level triggers, V MRReset Vc voltage control, DIS discharge end, V 0Output, GND ground connection.
Vibration drives chip IC 4Power end V CCBy resistance R 7Step-down, capacitor C 8Filtering is supplied with and is produced vibration, and external excited oscillation drives push-pull amplifier Q 1, Q 2, in turn conducting, by half cycle; Pusb pull oscilator self-oscillation Q 3, Q 4In turn conducting, by half cycle, two power outputs that push away drag large-power lamp through the stack of addition coupler is synthetic, dilatation is reliable, but requires two oscillating voltage phase place unanimities, non-linear intermodulation power is unbalanced obtains stable power output to eliminate.For this reason, introduce injection phase-locking and solve power synthesis phase simultaneous techniques.
Benchmark crystal oscillator quartz resonator frequency is subjected to variations in temperature minimum, and is highly stable.Reference signal is injected vibration through frequency divider and is driven the chip lock phase bit.Do not inject the reference signal vibration and drive chip IC 4RC oscillator free frequency, it is synthetic with its vector to inject reference signal RC oscillating voltage, by RC vibrator non-linearity frequency conversion locking phase, oscillator signal and injection reference signal only have a fixing phase difference.Synchronization bandwidth and injecting power direct ratio, with RC oscillator loaded Q inverse ratio, because reference signal is infused in input, gain is high, the small-power locking.Frequency divider IC 3Binary system or decade counter frequency division.
Injection phase-locking need not voltage-controlled tuning, phase demodulation and loop filtering, so circuit is simple, and fringe cost is low.Injection phase-locking there is not difference with looped phase locking in essence, superior performance, addition coupler stack push-pull amplifier and pusb pull oscilator power output are synthetic, lock effect push-pull amplifier traction pusb pull oscilator frequency coherence genlocing phase place is annotated in " closely binding " mutual coupling, it is synchronous to be suitable for the synthetic light fixture stable oscillation stationary vibration frequency plot of power, avoid the too high power imbalances of device temperature rise, steady light increases the service life.
Addition coupler T 4Inductance L 10Recommend output power transformer T with two 1, T 3Inductance L 2, L 6Anti-phase exciting current stack, 180 ° of low-order harmonics of phase difference are cancelled out each other, and the output current conversion doubles summation and delivers to lamp load, and input voltage, frequency, phase place and load are identical, and electric current equates equalizing resistance R 17No power waste.
Pusb pull oscilator T 2, T 3The dual transformer vibration, output transformer T 3Unsaturated, the effect height.Resonance frequency is transferred L 4, oscillatory feedback is transferred resistance R 10Or inductance L 5, adjusting frequency and feeding back does not mutually involve.
FM signal generator, time base chip IC 5Multi-harmonic-oscillations produces low frequency sawtooth signal, capacitor C 19Meet a pipe Q 6Source electrode bootstrapping positive feedback, capacitor C 15During charging, resistance R 22The constant charge rate that makes of pressure drop is constant, ensures the waveform linearity, frequency modulation(FM) self-oscillation chip RC oscillator, and linear saw-tooth wave is annotated the variation of lock centre frequency cycle around the benchmark crystal oscillator, eliminates fluorescent tube electric arc standing wave acoustic resonance point, suppresses the flicker steady light.High voltage direct current generator with press down to dodge FM signal generator base chip IC when same 5555 produce oscillation boosting, rectification and filtering, kill two birds with one stone.
The fluorescent tube circuits for triggering by high direct voltage through resistance R 25High frequency voltage is through capacitor C 12, resistance R 16To capacitor C 13Charging is when voltage is charged to bidirectional trigger diode VD 2Conducting, electric current is through pulse ignition transformer T 5Inductance L 12, by inductance L 13The high-voltage pulse of inducting triggers high-pressure sodium fluorescent tube G gas conducting starter.Behind the tube starting, VD 2No longer produce trigger impulse.Introduce the high direct voltage triggering and easily make tube starting.
Lamp abnormal current magnet ring inductance L 16Voltage diode VD 1Detection, resistance R 15, capacitor C 14Filtering is through resistance R 12, capacitor C 10Make Q 5Conducting, pusb pull oscilator power tube Q 3, Q 4End; Vibration drives chip IC 4Lamp failure controller SD controls failure of oscillation, protection push-pull amplifier Q 1, Q 2Simultaneously, lamp abnormal current resistance R 6Pressure drop is through resistance R 4, capacitor C 6Make chip IC 4Current detecting CS opens protection Q 1, Q 2Lamp abnormal current resistance R 9Pressure drop is through resistance R 11, capacitor C 10And then make Q 5Conducting, duplicate protection Q 3, Q 4
Embodiment Dc low voltage power supply 30V, inverter current 2.6A, coupling 70W high-pressure sodium fluorescent tube, inversion efficiency 89%, the illumination of turning on light round the clock for a long time, power tube temperature rise are in the permissible value scope, and light is stable.

Claims (3)

1. a Dc low voltage power supply is annotated the synthetic high-pressure sodium lamp of lock power, comprise Dc low voltage power supply, the high-pressure sodium fluorescent tube, it is characterized in that: also comprise the benchmark crystal oscillator, frequency divider, vibration drives chip, push-pull amplifier, pusb pull oscilator, the addition coupler, the fluorescent tube circuits for triggering, FM signal generator, wherein, the benchmark crystal oscillator is by quartz-crystal resonator, two inverters and resistance, electric capacity is formed, first inverter input and output two ends cross-over connection biasing resistor, and respectively and connect ground capacity, simultaneously, the quartz-crystal resonator of cross-over connection series connection trimmer also, benchmark crystal oscillator output signal inserts frequency divider through second inverter, vibration drives chip and includes the RC oscillator, recommend amplification driving circuit, current detecting CS, lamp failure control SD, RC oscillator outer meeting resistance R 2, capacitor C 4Produce vibration, output meets two high-power MOS field effect transistor of push-pull amplifier Q through recommending amplification driving circuit 1, Q 2Grid, Q 1, Q 2Drain electrode also meets transformer T 1Inductance L 1Two ends, vibration drive the chip power end through resistance R 7Decompression capacitor C 8Bypass and inductance L 1Mid point is through inductance L 3, capacitor C 7Bypass connects DC low-voltage, Q 2The source series resistance R 6Ground connection is through resistance R 4, capacitor C 6Connect vibration and drive chip CS, pusb pull oscilator is by two high-power MOS field effect transistor Q 3, Q 4Drain electrode meets transformer T 3Inductance L 4Two ends, Q 3, Q 4Grid meets transformer T 2Inductance L 8Two ends, inductance L 8Mid point source ground field effect transistor in parallel Q 5Drain electrode and resistance R 8, R 14, inductance L 7, resistance R 10With transformer T 3Inductance L 5Closure, inductance L 4Mid point is through inductance L 9With shunt capacitance C 9Connect DC low-voltage, FM signal generator output sawtooth signal meets field effect transistor Q 5Grid frequency modulation suppresses light flash, Q 3, Q 4Source electrode is through earth resistance R 9The pressure drop sampling current connects resistance R 11, resistance R 11With the abnormal condition of lamp tube current detection signal through resistance R 12Meet field effect transistor Q 5Grid, abnormal condition of lamp tube current detector signal connect vibration and drive chip lamp failure control SD, push-pull amplifier output power transformer T 1With pusb pull oscilator output power transformer T 3Synthesize, boost through the fluorescent tube circuits for triggering high-pressure sodium lamp starter that ignites by addition coupler power, benchmark crystal oscillator signal injects vibration through frequency divider and drives chip RC oscillator C TThe end locking phase is by push-pull amplifier transformer T 1With pusb pull oscilator transformer T 3Annotate frequency locking rate traction coherent synchronization locking phase in the synthetic mutual coupling of addition coupler power, Dc low voltage power supply connects benchmark crystal oscillator, frequency divider, FM signal generator power end.
2. Dc low voltage power supply according to claim 1 is annotated the synthetic high-pressure sodium lamp of lock power, it is characterized in that: FM signal generator by the time base chip IC 5, resistance R 20, R 21, R 22And capacitor C 15Multi-harmonic-oscillations, IC 5DIS end by resistance R 19Meet a pipe Q 6Grid, capacitor C 19Meet Q 6Source resistance R 18The bootstrapping positive feedback is exported linear sawtooth signal and is inserted two self-oscillation chip RC end frequency modulation inhibition light flash.
3. Dc low voltage power supply according to claim 1 is annotated the synthetic high-pressure sodium lamp of lock power, it is characterized in that: the fluorescent tube circuits for triggering by fluorescent tube one end through capacitor C 12, T 5Inductance L 13Insert addition coupler T 4Inductance L 11, capacitor C 12With inductance L 13Contact and connecting resistance R 16, ground capacity C 13, ground connection serial connection bidirectional trigger diode VD 2T 5Inductance L 12, the fluorescent tube other end passes lamp abnormality detection magnet ring mutual inductance inductance L 16Ground connection, high voltage direct current generator is by time base chip IC 5Vibration output meets transformer T 6Inductance L 14, through inductance L 15Boost diode VD 3Rectification, capacitor C 17, resistance R 24Filtering is by resistance R 25Connect capacitor C 12With inductance L 13Contact.
CN 201320227525 2013-04-15 2013-04-15 Direct-current low-voltage power supply injection-locking power synthesis high-voltage sodium lamp Expired - Fee Related CN203181376U (en)

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C17 Cessation of patent right
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Granted publication date: 20130904

Termination date: 20140415