CN101841950A - LED driving power supply and LED light source - Google Patents
LED driving power supply and LED light source Download PDFInfo
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- CN101841950A CN101841950A CN200910239097A CN200910239097A CN101841950A CN 101841950 A CN101841950 A CN 101841950A CN 200910239097 A CN200910239097 A CN 200910239097A CN 200910239097 A CN200910239097 A CN 200910239097A CN 101841950 A CN101841950 A CN 101841950A
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Abstract
The invention is applicable to the field of LED power supplies, and provides an LED driving power supply and an LED light source; and the LED driving power supply comprises a rectifier filter circuit, a dimming mode detection circuit, a remote control receiving module, a dummy load circuit, a main power converter, a secondary rectifier filter circuit and a main control integrated circuit. The invention can automatically detect various dimmers so as to automatically select to enter the corresponding dimming modes and achieve the multi-purposed effect. The LED driving power supply is applicable to phase-cut dimmer, button switch dimming and remote dimming without changing wiring and installing other LED driving power supplies.
Description
Technical field
The invention belongs to the LED field of power supplies, relate in particular to a kind of LED driving power and led light source.
Background technology
At present, cut type dimmer can only adapt to pure resistive incandescent lamp bulb, uses the LED driving power that the semiconductor device of cut type dimmer is damaged, and the LED lamp also scintillation can occur.Utilize key switch, open once more in the time that was controlled at for 3 seconds from be closed at every turn, design has the electricity-saving lamp of this dimming function can enter the brightness regulation pattern, but then can not carry out brightness adjustment control when using the LED lamp, only about with bright state.And remote control light modulating is applied to outdoor city lighting lamp control at present more, and general power and volume are all bigger, can not be applied in the led light source of room lighting smaller size smaller at all.
So, when the LED lamp is applied in different dimming modes, needing redesign LED driving power, people also need to buy respectively dissimilar led light sources when practical application.Simultaneously, all can be aspect lamp installation and wiring and change because of different dimmers or dimming mode, bring the very inconvenience and the wasting of resources to application.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of LED driving power, is intended to solve the problem of demand that existing LED driving power can not satisfy the remote control light modulating of cut type dimmer, key switch light modulation and miniaturization indoor application simultaneously.
The embodiment of the invention is achieved in that a kind of LED driving power, and described LED driving power comprises:
Current rectifying and wave filtering circuit is used for input voltage is carried out rectifying and wave-filtering, output dc voltage;
The light-modulating mode testing circuit is used for described direct voltage is detected, output light-modulating mode control signal;
The remote control receiver module is used to receive the remote control coding dim signal, the output pulse width modulation signal;
The dummy load circuit is used for providing dummy load when adopting cut type dimmer, output dimmer voltage volt value;
Main power inverter is used for the power according to the duty ratio conversion direct voltage that changes;
The secondary commutation filter circuit is used for the voltage after the described main power inverter conversion is carried out rectifying and wave-filtering output; And
The master control integrated circuit is used for entering different light-modulating modes according to described light-modulating mode control signal or pulse width modulating signal, controls described dummy load circuit and carries out switching, adjusts the duty ratio of described main power inverter.
Another purpose of the embodiment of the invention is a kind of led light source that comprises above-mentioned LED driving power.
The embodiment of the invention can detect different types of dimmer automatically, thereby select to enter corresponding light-modulating mode automatically, reached the effect that a lamp is used more, use this LED driving power, go for cut type dimmer, connect key switch light modulation and remote control light modulating, need not change wiring and other LED driving power is installed.
Description of drawings
Fig. 1 is the structure chart of the LED driving power that provides of first embodiment of the invention;
Fig. 2 be in the embodiment of the invention after the rectification of cut type dimmer direct voltage output waveform and master control integrated circuit drive the output waveform schematic diagram of dummy load;
Fig. 3 is the waveform schematic diagram that institute's interval time was opened and closed to key switch in the embodiment of the invention;
Fig. 4 is the waveform schematic diagram that output 50% duty ratio arrives the master control integrated circuit in the embodiment of the invention;
Fig. 5 shows the structure chart of the LED driving power that second embodiment of the invention provides;
Fig. 6 shows the circuit diagram of the LED driving power that second embodiment of the invention provides.
Embodiment
In order to make purpose of the present invention, technological invention embodiment and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention is provided with the light-modulating mode testing circuit and differentiates the dimmer kind, the remote control receiver module is set realizes remote control light modulating, the master control integrated circuit enters different light-modulating modes according to the signal of light-modulating mode testing circuit or remote control receiver module, control dummy load circuit, adjust the duty ratio of main power inverter, thereby reach the effect of adjusting led light source electric current and brightness.
Fig. 1 shows the structure of the LED driving power that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
This LED driving power can be widely used in the various led light sources, especially can be built in the led light source of room lighting smaller size smaller, comprise rectifier filter 1, main power inverter 3, secondary commutation filter circuit 4, dummy load circuit 5, light-modulating mode testing circuit 6, remote control receiver module 7 and master control integrated circuit 8.Wherein, thick line is represented main circuit signal annexation, and the fine rule of band arrow represents to detect control signal and direction thereof.
Be input between the led light source from power supply, be serially connected with rectifier filter 1, main power inverter 3 and secondary commutation filter circuit 4 successively.
The output of rectifier filter 1 also is connected to dummy load circuit 5 and light-modulating mode testing circuit 6.
The input of main power inverter 3 also connects master control integrated circuit 8.
The detection output signal of light-modulating mode testing circuit 6 and the control command signal of remote control receiver module 7 all are connected to master control integrated circuit 8, and the output signal of master control integrated circuit 8 is controlled main power inverter 3 and dummy load circuit 5 respectively.
The power supply input comes from cut type dimmer or key switch, input voltage is through rectifier filter 1 rectification, output dc voltage, the direct voltage of 6 pairs of inputs of light-modulating mode testing circuit detects, obtain different waveforms, be input to master control integrated circuit 8, master control integrated circuit 8 is judged with this and is entered cut type light-modulating mode or key switch light-modulating mode.If remote control receiver module 7 has control signal output, then master control integrated circuit 8 enters the remote control light modulating pattern.
Master control integrated circuit 8 is controlled dummy load circuit 5 in different ways and is carried out switching according to the difference of light-modulating mode, adjusts the duty ratio of main power inverter 3, thereby reaches the effect of adjusting led light source electric current and brightness.
When adopting cut type dimmer, be input to current rectifying and wave filtering circuit 1 through the voltage after the cut, be rectified into direct voltage, light-modulating mode testing circuit 6 detected signals are that a quilt has been cut the waveform signal of phase conduction angle, shown in Fig. 2 waveform 1, this signal is input to master control integrated circuit 8, and master control integrated circuit 8 enters the cut type light-modulating mode of setting, and the whole LED driving power source system is activated work.Master control integrated circuit 8 generates drive signal according to the signal of input, shown in the waveform among Fig. 22, drives 5 work of dummy load circuit.When cut type dimmer had output, drive signal was a low level, and dummy load inserts, and guaranteed cut type dimmer operate as normal.Simultaneously, master control integrated circuit 8 is according to detected dimmer voltage volt value, and the duty ratio of the main power inverter 3 of corresponding adjustment outputs to led light source through secondary commutation filter circuit 4, regulate LED electric current and brightness, reach the effect of adjusting led light source electric current and brightness.
When adopting the key switch light modulation, civil power is rectified into direct voltage through current rectifying and wave filtering circuit 1, light-modulating mode testing circuit 6 detected signals are sine wave signals, are input to master control integrated circuit 8, and master control integrated circuit 8 enters the sinusoidal wave mode circuit working of setting.The maximum duty ratio of master control integrated circuit 8 outputs arrives main power inverter 3, outputs to led light source after 4 rectifications of secondary commutation filter circuit, and this moment, the electric current and the brightness of led light source were the brightest.Simultaneously, master control integrated circuit 8 is closed and is driven dummy load circuit 5.
When key switch is closed, led light source extinguishes, if within 3 seconds once more when opening key switch, its signal waveform as shown in Figure 3, master control integrated circuit 8 outputs to the duty ratio of main power inverter 3 can adjust to 50%, the led light source electric current can descend 50%, and brightness is deepening accordingly also, as shown in Figure 4.Open when operation when repeating above being closed to once more, master control integrated circuit 8 outputs to the duty ratio of main power inverter 3 can adjust to 30%, led light source brightness is deepening accordingly also, according to 100% → 50% → 30% → 0% → 100% → ... circulation law carry out light modulation.
When adopting remote control light modulating, civil power is rectified into direct voltage through current rectifying and wave filtering circuit 1, and light-modulating mode testing circuit 6 detected signals are sine wave signals of a mains frequency, input master control integrated circuit 8.Master control integrated circuit 8 enters the sinusoidal wave mode circuit working of setting, and the maximum duty ratio of output arrives main power inverter, outputs to led light source through secondary commutation filter circuit 4, and this moment, the electric current and the brightness of led light source were the brightest.Simultaneously, master control integrated circuit 8 is closed and is driven dummy load circuit 5.
During with remote control transmitter control LED driving power, whenever by a remote control transmitter, remote control receiver module 7 can be received the respective coding dim signal, export a pulse width modulation (Pulse Width Modulation, PWM) signal is to master control integrated circuit 8, and master control integrated circuit 8 is according to the pwm signal of input, the duty ratio of the main power inverter 3 of corresponding adjustment, the electric current and the brightness of led light source are changed with remote control control, reach the effect of light modulation.
Fig. 5 shows the structure of the LED driving power that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
In the present embodiment, between rectifier filter 1 and main power inverter 3, increase circuit of power factor correction 2, simultaneously by master control integrated circuit 8 to its control.Circuit of power factor correction 2 receives the fixed frequency of master control integrated circuit 8 outputs, the signal of change in duty cycle, makes the conducting phase place of electric current consistent with voltage, and ON time is also corresponding to broaden, thereby improves power factor, realizes energy-conserving and environment-protective effectively.
Fig. 6 shows the circuit structure of the LED driving power that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
Power supply input output dc voltage after rectifier bridge 1 rectification, electric capacity 2 carries out filtering to this direct voltage.
Circuit of power factor correction 2 is made up of inductance 13, electric power field effect transistor 14, diode 15 and electrochemical capacitor 16.
The direct voltage anode is the input of circuit of power factor correction 2, inductance 13 1 termination direct voltage anodes, and the anode of another terminating diode 15, the negative electrode of diode 15 are the output of circuit of power factor correction 2.
The source electrode of electric power field effect transistor 14 connects the anode of diode 15, and drain electrode connects direct current ground, and grid is subjected to 8 controls of master control integrated circuit.The negative electrode of the positive terminating diode 15 of electrochemical capacitor 16, negative terminal connects direct current ground.
Resistance 20 is in parallel with electric capacity 21, the output of a termination circuit of power factor correction 2, the negative electrode of a terminating diode 22.
The output of winding 25-1 one a termination circuit of power factor correction 2 of transformer, the anode of a terminating diode 22.
The source electrode of electric power field effect transistor 23 links to each other with the anode of diode 22, and drain electrode is through resistance 24 ground connection, and grid is subjected to 8 controls of master control integrated circuit.
Secondary commutation filter circuit 4 is made up of transformer secondary winding 25-2, diode 33 and electrochemical capacitor 34.
The anode of the terminating diode 33 of secondary winding 25-2 forms the out-put supply positive pole through diode 33; The secondary winding 25-2 other end is the out-put supply negative pole.
Electrochemical capacitor 34 is attempted by between the out-put supply both positive and negative polarity, plays the filtering voltage regulation effect.
Light-modulating mode testing circuit 6 is made up of resistance 3, resistance 4, resistance 5, electric capacity 6, resistance 7, resistance 8, electrochemical capacitor 9.
Between direct voltage anode and ground, be in series with resistance 3, resistance 4, resistance 5 successively.Electric capacity 6 is in parallel with resistance 5, and non-earth terminal provides a signal to master control integrated circuit 8.
Between the common port of resistance 3, resistance 4 and direct current ground, be in series with resistance 7, resistance 8 successively.Electrochemical capacitor 9 is in parallel with resistance 8, and negativing ending grounding, anode provide a signal to master control integrated circuit 8.
Remote control receiver module 7 receives decoding chip 31 by remote control and diode 32 is formed.Receiving decoding chip 31 by remote control can be according to the remote-control transmitting signal that receives, and the duty ratio of regulating output pulse width automatically receives after the remote signal, delivers to master control integrated circuit 8 through diode.
Master control integrated circuit 8 is made up of power drives chip 17, resistance 18, resistance 19, Transformer Winding 25-3, electrochemical capacitor 26, diode 27, resistance 28, resistance 29, resistance 30.
Power drives chip 17 has dimmer species detection function; can regulate the duty ratio of output pulse width automatically according to detecting different dimmer kinds, and have overvoltage, overload, overpower and defencive function; can be controlled by external dimmer control, realize stepless and incremental dimming.
The pin 1 of power drives chip 17 outputs a control signal to the grid of electric power field effect transistor 12 in the dummy load circuit 5.
The pin 2 of power drives chip 17 is connected to the non-earth terminal of resistance 5 and electric capacity 6 in the light-modulating mode testing circuit 6.
The pin 3 of power drives chip 17 is connected to the non-earth terminal of resistance 8 and electric capacity 9 in the light-modulating mode testing circuit 6.
The pin 4 of power drives chip 17 is through resistance 30 ground connection.
The pin 5 of power drives chip 17 is connected to pin 10 through resistance 28, diode 27 simultaneously through resistance 29 ground connection.The anode connecting resistance 28 of diode 27 is simultaneously through Transformer Winding 25-3 ground connection.The negative electrode of diode 27 is connected to pin 10, connects the positive pole of electrochemical capacitor 26 simultaneously.The minus earth of electrochemical capacitor 26.
The pin 6 of power drives chip 17 is connected to the common point of electric power field effect transistor in the main power inverter 3 23 and resistance 24.Pin 7 ground connection of power drives chip 17.
The pin 8 of power drives chip 17 outputs a control signal to the grid of electric power field effect transistor 23 in the main power inverter 3.
The pin 9 of power drives chip 17 outputs a control signal to the grid of electric power field effect transistor 14 in the circuit of power factor correction 2.
The pin 10 of power drives chip 17 is received the output of circuit of power factor correction 2 through resistance 19, resistance 18, connects the positive pole of electrochemical capacitor 26 simultaneously.
The positive pole of electrochemical capacitor 26 is connected to remote control receiver module 7, for it provides power supply.
The embodiment of the invention can detect different types of dimmer automatically, thereby select to enter corresponding light-modulating mode automatically, reached the effect that a lamp is used more, use this LED driving power, go for cut type dimmer, key switch light modulation and remote control light modulating, need not change wiring and other LED driving power is installed.In addition, this LED driving power has also designed circuit of power factor correction, and power factor can be reached more than 0.85.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a LED driving power is characterized in that, described LED driving power comprises:
Current rectifying and wave filtering circuit is used for input voltage is carried out rectifying and wave-filtering, output dc voltage;
The light-modulating mode testing circuit is used for described direct voltage is detected, output light-modulating mode control signal;
The remote control receiver module is used to receive the remote control coding dim signal, the output pulse width modulation signal;
The dummy load circuit is used for providing dummy load when adopting cut type dimmer, output dimmer voltage volt value;
Main power inverter is used for the power according to the duty ratio conversion direct voltage that changes;
The secondary commutation filter circuit is used for the voltage after the described main power inverter conversion is carried out rectifying and wave-filtering output; And
The master control integrated circuit is used for entering different light-modulating modes according to described light-modulating mode control signal or pulse width modulating signal, controls described dummy load circuit and carries out switching, adjusts the duty ratio of described main power inverter.
2. LED driving power as claimed in claim 1 is characterized in that, described LED driving power also comprises:
Circuit of power factor correction is used to receive the fixed frequency of described master control integrated circuit output, the signal of change in duty cycle, makes the conducting phase place of electric current consistent with voltage.
3. LED driving power as claimed in claim 2 is characterized in that, described circuit of power factor correction comprises inductance 13, electric power field effect transistor 14, diode 15 and electrochemical capacitor 16;
One termination direct voltage anode of described inductance 13, the anode of the described diode 15 of another termination, the negative electrode of described diode 15 are the output of described circuit of power factor correction;
The source electrode of described electric power field effect transistor 14 connects the anode of described diode 15, and drain electrode connects direct current ground, and grid is controlled by described master control integrated circuit;
The negative electrode of the positive terminating diode 15 of described electrochemical capacitor 16, negative terminal connects direct current ground.
4. LED driving power as claimed in claim 2 is characterized in that, described main power inverter comprises resistance 20, electric capacity 21, diode 22, electric power field effect transistor 23, resistance 24 and winding 25-1 of transformer;
Described resistance 20 is in parallel with electric capacity 21, the output of the described circuit of power factor correction of a termination, the negative electrode of the described diode 22 of a termination;
The output of the described circuit of power factor correction of a termination of a winding 25-1 of described transformer, the anode of the described diode 22 of another termination;
The source electrode of described electric power field effect transistor 23 links to each other with the anode of described diode 22, and drain electrode is through described resistance 24 ground connection, and grid is controlled by described master control integrated circuit.
5. LED driving power as claimed in claim 1 is characterized in that, described light-modulating mode testing circuit 6 comprises resistance 3, resistance 4, resistance 5, electric capacity 6, resistance 7, resistance 8 and electrochemical capacitor 9;
Described resistance 3, resistance 4, resistance 5 are connected between direct voltage anode and the ground successively;
Described electric capacity 6 is in parallel with resistance 5, and its non-earth terminal provides a signal to described master control integrated circuit;
Between the common port of described resistance 3, resistance 4 and direct current ground, be in series with resistance 7, resistance 8 successively;
Described electrochemical capacitor 9 is in parallel with described resistance 8, and negativing ending grounding, anode provide a signal to described master control integrated circuit.
6. LED driving power as claimed in claim 1 is characterized in that, described master control integrated circuit comprises a power drives chip, and the peripheral circuit that is connected with described power drives chip.
7. LED driving power as claimed in claim 1 is characterized in that, described light-modulating mode comprises the light modulation of cut type, key switch light modulation and remote control light modulating.
8. led light source that comprises the LED driving power of claim 1.
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| CN 200910239097 CN101841950B (en) | 2009-12-29 | 2009-12-29 | LED driving power supply and LED light source |
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| CN101841950B CN101841950B (en) | 2013-05-08 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102123548A (en) * | 2010-12-30 | 2011-07-13 | 深圳市京泉华电子有限公司 | Brightness adjusting method and system of LED lamp |
| CN102209416A (en) * | 2011-06-16 | 2011-10-05 | 台达电子企业管理（上海）有限公司 | Dimming system and control system and control method thereof |
| CN102395233A (en) * | 2011-11-02 | 2012-03-28 | 深圳市讯宇创科技有限公司 | Switching light modulation LED driving circuit and LED lamp set |
| CN102573224A (en) * | 2011-12-26 | 2012-07-11 | 中科恒源科技股份有限公司 | Commercial power interaction type wind-solar complementation street lamp system controller |
| CN102711317A (en) * | 2012-04-28 | 2012-10-03 | 漳州市立达信绿色照明有限公司 | LED (Light emitting diode) wireless intelligent driving circuit and LED lamp adopting same |
| CN103277689A (en) * | 2013-06-05 | 2013-09-04 | 宏齐光电子(深圳)有限公司 | Manufacturing method of white LED (light emitting diode) lighting lamp |
| CN103292189A (en) * | 2013-06-06 | 2013-09-11 | 宏齐光电子(深圳)有限公司 | Led lamp |
| CN103292186A (en) * | 2013-06-03 | 2013-09-11 | 宏齐光电子(深圳)有限公司 | LED lamp |
| EP2830394A1 (en) * | 2013-07-24 | 2015-01-28 | Dialog Semiconductor GmbH | Programmable Phase-cut Dimmer Operation |
| CN105246215A (en) * | 2015-11-03 | 2016-01-13 | 佛山市南海区联合广东新光源产业创新中心 | LED driving power supply with bluetooth remote control |
| CN105375488A (en) * | 2015-11-26 | 2016-03-02 | 黎辉 | Series AC power supply system |
| CN107642754A (en) * | 2017-10-13 | 2018-01-30 | 上海小糸车灯有限公司 | Automobile-used front fog lamp and daytime running lamps multiplexing light fixture and construction method |
| CN111385934A (en) * | 2019-12-26 | 2020-07-07 | 宁波凯耀电器制造有限公司 | Silicon controlled rectifier Bleeder circuit of adjusting luminance |
| CN111836439A (en) * | 2020-06-23 | 2020-10-27 | 中国民用航空总局第二研究所 | Airport entrance prohibition light-arranging control method and system |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102123548A (en) * | 2010-12-30 | 2011-07-13 | 深圳市京泉华电子有限公司 | Brightness adjusting method and system of LED lamp |
| CN102123548B (en) * | 2010-12-30 | 2014-04-09 | 深圳市京泉华科技股份有限公司 | Brightness adjusting method and system of LED lamp |
| US8810143B2 (en) | 2011-06-16 | 2014-08-19 | Delta Electronics (Shanghai) Co., Ltd. | Dimmer system and control system and method thereof |
| CN102209416A (en) * | 2011-06-16 | 2011-10-05 | 台达电子企业管理（上海）有限公司 | Dimming system and control system and control method thereof |
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| CN102395233A (en) * | 2011-11-02 | 2012-03-28 | 深圳市讯宇创科技有限公司 | Switching light modulation LED driving circuit and LED lamp set |
| CN102573224A (en) * | 2011-12-26 | 2012-07-11 | 中科恒源科技股份有限公司 | Commercial power interaction type wind-solar complementation street lamp system controller |
| CN102711317A (en) * | 2012-04-28 | 2012-10-03 | 漳州市立达信绿色照明有限公司 | LED (Light emitting diode) wireless intelligent driving circuit and LED lamp adopting same |
| CN102711317B (en) * | 2012-04-28 | 2015-01-14 | 立达信绿色照明股份有限公司 | LED (Light emitting diode) wireless intelligent driving circuit and LED lamp adopting same |
| CN103292186A (en) * | 2013-06-03 | 2013-09-11 | 宏齐光电子(深圳)有限公司 | LED lamp |
| CN103277689A (en) * | 2013-06-05 | 2013-09-04 | 宏齐光电子(深圳)有限公司 | Manufacturing method of white LED (light emitting diode) lighting lamp |
| CN103292189A (en) * | 2013-06-06 | 2013-09-11 | 宏齐光电子(深圳)有限公司 | Led lamp |
| US20150028778A1 (en) * | 2013-07-23 | 2015-01-29 | Dialog Semiconductor Gmbh | Programmable Phase-Cut Dimmer Operation |
| EP2830394A1 (en) * | 2013-07-24 | 2015-01-28 | Dialog Semiconductor GmbH | Programmable Phase-cut Dimmer Operation |
| US9307603B2 (en) | 2013-07-24 | 2016-04-05 | Dialog Semiconductor Gmbh | Programmable phase-cut dimmer operation |
| CN105246215A (en) * | 2015-11-03 | 2016-01-13 | 佛山市南海区联合广东新光源产业创新中心 | LED driving power supply with bluetooth remote control |
| CN105375488A (en) * | 2015-11-26 | 2016-03-02 | 黎辉 | Series AC power supply system |
| CN105375488B (en) * | 2015-11-26 | 2017-12-26 | 黎辉 | A kind of tandem AC power supply system |
| CN107642754A (en) * | 2017-10-13 | 2018-01-30 | 上海小糸车灯有限公司 | Automobile-used front fog lamp and daytime running lamps multiplexing light fixture and construction method |
| CN107642754B (en) * | 2017-10-13 | 2023-12-05 | 华域视觉科技(上海)有限公司 | Multiplexing lamp for front fog lamp and daytime running lamp of vehicle and construction method |
| CN111385934A (en) * | 2019-12-26 | 2020-07-07 | 宁波凯耀电器制造有限公司 | Silicon controlled rectifier Bleeder circuit of adjusting luminance |
| CN111836439A (en) * | 2020-06-23 | 2020-10-27 | 中国民用航空总局第二研究所 | Airport entrance prohibition light-arranging control method and system |
| CN111836439B (en) * | 2020-06-23 | 2023-02-07 | 中国民用航空总局第二研究所 | Airport entrance prohibition light-arranging control method and system |
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