CN202738182U - Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp - Google Patents
Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp Download PDFInfo
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- CN202738182U CN202738182U CN 201220302203 CN201220302203U CN202738182U CN 202738182 U CN202738182 U CN 202738182U CN 201220302203 CN201220302203 CN 201220302203 CN 201220302203 U CN201220302203 U CN 201220302203U CN 202738182 U CN202738182 U CN 202738182U
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Abstract
The utility model discloses a constant current driving power supply without polarity distinguishing and a LED (Light Emitting Diode) fluorescent lamp. The constant current driving power supply without polarity distinguishing comprises an input current polarity determination unit, a double-bridge switch and a constant current controller, wherein the input current polarity determination unit is used for determining the polarity of input power; the double-bridge switch is connected with the input current polarity determination unit to rectify current provided by the input current polarity determination unit and then perform polarity switching on obtained direct current to keep the polarity of output current in a constant state; and the constant current controller is connected with the double-bridge switch for sampling a current value and a voltage value of the output current of the double-bridge switch from time to time to control the output current to be output in a constant state. The constant current driving power supply without polarity distinguishing is connected to a power supply without distinguishing the polarity of the power supply and is also suitable for a user who has no circuit knowledge.
Description
Technical field
The utility model relates to lighting technical field, is specifically related to a kind of constant-current driving power supply and LED fluorescent lamp of nonpolarity differentiation.
Background technology
The integrated circuit of traditional fluorescent lamp as shown in Figure 1.Its operation principle is: in the time of switch connection, supply voltage is added to the two poles of the earth of starter immediately by ballast and tube filament.220 volts voltage makes the ionized inert gas of starter immediately, produces glow discharge.The heat of glow discharge makes the bimetal leaf expanded by heating, the two poles of the earth contact.Electric current touches the utmost point by ballast, starter and the two ends filament consists of path.Filament is very fast by current flow heats, launches a large amount of electronics.At this moment, because starter the two poles of the earth are closed, two interpolar voltages are zero, and glow discharge disappears, and temperature reduces in the pipe; Bimetal leaf automatically resets, and the two poles of the earth disconnect.The moment that disconnects at the two poles of the earth, circuital current cuts off suddenly, and ballast produces very large self induction electromotive force, acts on the pipe two ends after superposeing with supply voltage.The a large amount of electronics that emit when filament is heated, under the lamp tube ends action of high voltage, with great speed by the low potential end to the high potential end motion.In the process of accelerated motion, argon molecules in the impact tube makes it rapid ionization.Heat is given birth in argon gas ionization, and heat makes mercury produce steam, and mercury vapor also is ionized thereupon, and sends strong ultraviolet ray.Under ultraviolet exciting, the fluorescent material in the tube wall sends the visible light of substantial white.Fluorescent lamp normal luminous after.Because alternating current is the coil by ballast constantly, produce self induction electromotive force in the coil, self induction electromotive force hinders the curent change in the coil, at this moment ballast plays the step-down current limliting, make current stabilization in the rated current scope of fluorescent tube, lamp tube ends voltage also is stabilized in the rated operational voltage scope.Because this voltage is lower than the ionization voltage of starter, also just no longer worked so be connected in parallel on the starter at two ends.Traditional fluorescent lamp has following defective:
Contain a large amount of mercury vapours in traditional fluorescent lamp, if broken mercury vapour then can evaporate in the atmosphere produces harm to human body;
Conventional lamp can produce a large amount of heat energy, and is larger for the loss of energy;
What traditional fluorescent lamp used is alternating current, because the variation of alternating current, so can produce 100-120 time stroboscopic each second, to user's eyes generation harm;
Traditional fluorescent lamp is to light by the high voltage that ballast discharges, and then can't light when lower voltage, and make a noise when ballast worked, and surrounding environment is exerted an influence;
The fluorescent tube of traditional fluorescent lamp is to adopt glass to make, and when fluorescent tube was pounded on the floor, glass was easily broken;
When the power supply of traditional fluorescent lamp accesses, can only mode according to the rules carry out wiring, because all there is lamp holder at the fluorescent lamp two ends, two conductive poles are arranged on each lamp holder, in case the misconnection power supply (for example, the two ends of power supply are connected on the same lamp holder, perhaps starter and ballast improved cross connect), can cause to start or to damage fluorescent lamp.
Summary of the invention
For the problems referred to above, the purpose of this utility model is when connecting power supply, need not to distinguish constant-current driving power supply and the LED fluorescent lamp of the nonpolarity differentiation of power supply polarity, and is applicable too for the user who does not possess electric circuit knowledge.
The technical scheme that realizes above-mentioned purpose is as follows:
The constant-current driving power supply of nonpolarity differentiation comprises input current polarity judging unit, is used for judging the polarity of input power; And
The doube bridge switch that is connected with input current polarity judging unit after the electric current that input current polarity judging unit is provided carries out rectification, carries out polarity to the direct current that obtains and switches, and the polarity that makes output current is steady state; And
The constant-current controller that is connected with the doube bridge switch, current value and the magnitude of voltage of the doube bridge switch output current of sampling constantly are to control output current with constant State-output.
Adopted such scheme, after by input current polarity judging unit the polarity of power supply being identified, carry out rectification by the doube bridge switch, if polarity is identical with doube bridge switch acquiescence, then the doube bridge switch need not to change the polarity of output current, if polarity is opposite with doube bridge switch acquiescence, then the doube bridge switch changes the polarity of output current, therefore, by the effect of doube bridge switch, make the polarity of output current remain steady state, and for the input of power supply, no matter be just to connect or reversal connection, for the output polarity of power supply all without affecting.And constant-current controller is sampled to output current, by sampled result output current is imposed control, thereby makes output current keep constant output.
Described input current polarity judging unit comprises the first electric capacity, and the low pass filter that is connected with the first electric capacity.By low pass filter power supply is processed, improved the quality of power supply.
Described doube bridge switch comprises rectifier bridge and rectification diverter switch, the rectification diverter switch comprises the second electric capacity, the second diode, the 4th diode, the 6th diode and the 3rd electric capacity, one end of the second electric capacity is connected with the cathode terminal of the second diode, the anode tap of the second diode is connected with the cathode terminal of the 4th diode, the anode tap of the other end of the second electric capacity and the 4th diode is connected with the cathode terminal of the 6th diode jointly, one end of the 3rd electric capacity is connected with the anode tap of the second diode, the other end ground connection of the 3rd electric capacity.
Described constant-current controller comprises the current sample module, gathers the current value of doube bridge switch output current; And
The voltage sample module, the magnitude of voltage of collection doube bridge switch output current; And
The controller that is connected with voltage sample module and current sample module according to the signal that current sample module and voltage sample module provide, sends and makes output current with the control signal of constant current formal output; And
The HF switch that is connected with controller receives the control signal that controller sends, and makes constant output current output; And
Stabilized voltage power supply is converted to stable voltage with the output current of doube bridge switch and supplies with controller.
Described constant-current controller also comprises current regulator, and an end of this current regulator is connected with the doube bridge output switching terminal, and the other end of current regulator is connected with an end of voltage sample module.By adjusting current regulator, change the size of output current, thereby can make the load of the applicable different capacity of driving power of the present utility model, have advantage applied widely.
Described constant-current controller also comprises filter, this filter comprises fast recovery diode, the 9th resistance, instrument transformer, the 21 resistance, the 9th resistance one end connects the anode of fast recovery diode, the other end of the 9th resistance connects an end of the first coil of instrument transformer, the other end ground connection of the first coil of instrument transformer, one end of the second coil of instrument transformer connects the doube bridge output switching terminal, the second coil other end is connected with an end of HF switch, and the 21 resistance is connected in parallel on the two ends of the 9th resistance.Filter and HF switch form the logical device of low pass filtered, avoid output current resonance to occur.
Described HF switch is field effect transistor.
Described current sample module is the 20 resistance, and described voltage sample module is photoelectrical coupler.Because photoelectrical coupler has that volume is little, long service life, wide, the strong anti-interference performance of operating temperature range. contactless and input is isolated on electric fully with output, plays the maintenance effect concerning the overall performance of driving power of the present utility model.
Described driving power also comprises a voltage processor, and this voltage processor is connected in the input of input current polarity judging unit, and voltage processor comprises piezo-resistance and the instrument transformer that is connected with piezo-resistance.By the processing of voltage processor to power supply, make input voltage range of the present utility model can be suitable for input voltage in 85V to the 265V scope, have the wider voltage scope of application.
The LED fluorescent lamp, the first daylight lamp holder and the second daylight lamp holder that comprise fluorescent tube and be connected to lamp tube ends, be provided with circuit board in the described fluorescent tube, this circuit board is provided with the led light source module, be electrically connected the constant-current driving power supply of a nonpolarity differentiation at circuit board, the constant-current driving power supply of this nonpolarity differentiation is connected with first rectifier bridge, the first rectifier bridge is connected with the first daylight lamp holder, the constant-current driving power supply of nonpolarity differentiation also is connected with second rectifier bridge, and the second rectifier bridge is connected with the second daylight lamp holder.
Adopted such scheme, owing to adopted the constant-current driving power supply of nonpolarity differentiation in the LED fluorescent lamp, the constant-current driving power supply of nonpolarity differentiation needn't be distinguished the polarity of the power supply of access LED fluorescent lamp to adjustment or the switching of power supply.And LED fluorescent lamp of the present utility model has fool-proof design, the circuit connecting that is the LED fluorescent lamp can connect arbitrarily two, perhaps butt and butt, perhaps improved cross connect, therefore, the connected mode of LED fluorescent lamp of the present utility model and power supply is diversity, for the user who does not possess electric circuit knowledge, also is to install or to replace traditional fluorescent lamp.
In addition, the power consumption of LED fluorescent lamp of the present utility model is below 1/3rd of traditional fluorescent lamp, and the life-span also is 10 times of traditional fluorescent lamp, can use for a long time and need not to change, and reduces labour cost, is more suitable in the occasion that is difficult to change.Compare with common fluorescent lamp, the LED fluorescent lamp need not ballast, need not starter, and is non-maintaining without stroboscopic, and frequent switch can not cause any damage.LED safe fluorescent-lamp and stable quality is arranged can stand the 4kv high voltage, and heat dissipation capacity is low, works in-30 ℃-55 ℃ the environment of can working.Owing to do not have ultraviolet ray and infrared ray when LED is luminous, there is not deleterious material, such as mercury, the protection eyes do not have noise yet.Because the freedom from vibration of fluorescent tube is good, not only be convenient to transportation, but also anti-crushing.In addition, energy-saving and emission-reduction are advocated in the current whole world, and the LED fluorescent lamp must can replace conventional lamp in future completely as a kind of green light source product of novel energy-saving and environmental protection.
In addition, the utlity model has following characteristics:
1, moulded attractive in appearance;
2, waterproof and dustproof reaches the IP65 level;
3, radiating effect is remarkable, can normally use in-40 ℃ of-40 ℃ of scopes;
4, can use in the world;
5, can use in the area of line voltage shakiness;
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Description of drawings
Fig. 1 is the circuit structure diagram of traditional fluorescent lamp in the prior art;
Fig. 2 is the circuit block diagram of the constant-current driving power supply of nonpolarity differentiation of the present utility model among Fig. 1;
Fig. 3 is the circuit theory diagrams of Fig. 2;
Fig. 4 is the structural representation of LED fluorescent lamp;
Fig. 5 is the first johning knot composition of LED fluorescent lamp and power supply;
Fig. 6 is the second johning knot composition of LED fluorescent lamp and power supply;
Fig. 7 is the third johning knot composition of LED fluorescent lamp and power supply;
Fig. 8 is the 4th kind of johning knot composition of LED fluorescent lamp and power supply;
Embodiment
With reference to Fig. 2, the constant-current driving power supply of nonpolarity differentiation of the present utility model is comprised of voltage processor 10, input current polarity judging unit 20, doube bridge switch 30 and constant-current controller 40.The below is elaborated to every part respectively:
With reference to Fig. 2 and Fig. 3, driving power also comprises a voltage processor 10, and this voltage processor is connected in the input of input current polarity judging unit 20.The instrument transformer T2 that voltage processor 10 comprises piezo-resistance Z1 and is connected with piezo-resistance, voltage processor 10 also comprises fuse F1, the end of fuse F1 is connected with piezo-resistance Z1.Because piezo-resistance Z1 resistance value in certain current/voltage scope becomes with voltage, and instrument transformer T2 can become the standard low-voltage with high voltage or large electric current scaling transformation.Therefore, voltage processor of the present utility model can be suitable for the input voltage in 85V to the 265V scope, has the wider voltage scope of application.
With reference to Fig. 2 and Fig. 3, input current polarity judging unit 20 is used for judging the polarity of input power.Described input current polarity judging unit 20 comprises the first capacitor C X1, and the low pass filter that is connected with the first capacitor C X1.The two ends of the first capacitor C X1 are connected with the two ends of instrument transformer T2 respectively.Low pass filter is by the second inductance L 2, and ten nine resistance R 19 in parallel with the second inductance L 2 form, and an end of low pass filter connects the first capacitor C X1, and the other end of low pass filter connects the doube bridge switch.
With reference to Fig. 2 and Fig. 3, input current polarity judging unit 20 connects doube bridge switch 30, after the electric current that the doube bridge switch provides input current polarity judging unit 20 carries out rectification, the direct current that obtains is carried out polarity switch, the polarity that makes output current is steady state.The doube bridge switch comprises rectifier bridge U3 and rectification diverter switch.The full bridge rectifier that rectifier bridge U3 is comprised of four diodes, the output of rectifier bridge U3 connects a capacitor C 8, processes output current is carried out filtering.The rectification diverter switch comprises the second capacitor C 2, the second diode D2, the 4th diode D4, the 6th diode D6 and the 3rd capacitor C 3, one end of the second capacitor C 2 is connected with the cathode terminal of the second diode D2, the anode tap of the second diode D2 is connected with the cathode terminal of the 4th diode D4, the anode tap of the other end of the second capacitor C 2 and the 4th diode D4 is connected with the cathode terminal of the 6th diode D6 jointly, one end of the 3rd capacitor C 3 is connected with the anode tap of the second diode, the other end ground connection of the 3rd capacitor C 3.The second capacitor C 2 and the 3rd capacitor C 3 are electrochemical capacitor.
With reference to Fig. 2 and Fig. 3, doube bridge switch 30 connects constant-current controllers 40, constant-current controller 40 sample constantly current value and the magnitude of voltage of doube bridge switch output current, with the control output current with constant State-output.Constant-current controller 40 comprises the current sample module, gathers the current value of doube bridge switch output current, and the current sample module is the 20 resistance R 20.And voltage sample module, gather the magnitude of voltage of doube bridge switch output current, the voltage sample module is photoelectrical coupler, photoelectrical coupler is comprised of light-emitting diode U2A and phototriode U2B, light-emitting diode U2A is connected to the output of doube bridge switch 30, and phototriode U2B is connected with controller.And the controller U1 that is connected with voltage sample module and current sample module, according to the signal that current sample module and voltage sample module provide, send and make output current with the control signal of constant current formal output.Controller U1 is the OB2263 cake core, pin 1 ground connection of controller U1, and the pin 2 of controller U1 is connected with the 4th capacitor C 4 with the electric capacity 9 of parallel connection, and the pin 3 of controller U1 connects the every triode U2B of light, and the pin 4 of controller U1 connects the 20 resistance R 20.The pin 5 of controller U1 connects stabilized voltage power supply, and the pin 6 of controller U1 connects HF switch.HF switch Q1 is connected with the pin 6 of controller, receives the control signal that controller sends, and makes constant output current output, and HF switch Q1 is field effect transistor.Stabilized voltage power supply is converted to stable voltage supply controller with the output current of doube bridge switch, stabilized voltage power supply comprises the first resistance R 1, the 18 resistance R 18, the 5th capacitor C 5 and voltage stabilizing didoe D7, one end of the first resistance R 1 connects the output of doube bridge switch, one end of connection the 18 resistance R 18 of the first resistance R 1, the other end of the 18 resistance R 18 connects an end of the 5th capacitor C 5, the other end ground connection of the 5th capacitor C 5, voltage stabilizing didoe D7 is connected in parallel on the two ends of the 5th capacitor C 5.Can be controller U1 by stabilized voltage power supply stable operating voltage is provided.Constant-current controller 40 also comprises current regulator, and an end of this current regulator is connected with the doube bridge output switching terminal, and the other end of current regulator is connected with an end of voltage sample module.Current regulator is comprised of the 7th resistance R 7 and the 8th resistance R 8, the 7th resistance R 7 and 8 parallel connections of the 8th resistance R.By adjusting current regulator, change the size of output current, thereby can make the load of the applicable different capacity of driving power of the present utility model, have advantage applied widely.Constant-current controller 40 also comprises filter, and filter and HF switch Q1 form the logical device of low pass filtered, avoid output current resonance to occur.Filter comprises fast recovery diode D5, the 9th resistance R 9, instrument transformer T1, the 21 resistance R 21, the 9th resistance R 9 one ends connect the anode of fast recovery diode D5, the negative electrode of fast recovery diode D5 connects the pin 5 of controller U1, the other end of the 9th resistance R 9 connects the end of the first coil T1A of instrument transformer T1, the other end ground connection of the first coil T1A of instrument transformer T1, the end of the second coil T1B of instrument transformer T1 connects the doube bridge output switching terminal, the second coil T1B other end is connected with an end of HF switch, and the 21 resistance R 21 is connected in parallel on the two ends of the 9th resistance R 9.
With reference to Fig. 4, LED fluorescent lamp of the present utility model, the first daylight lamp holder 2 and the second daylight lamp holder 3 that comprise fluorescent tube 1 and be connected to lamp tube ends, be provided with circuit board 4 in the described fluorescent tube, this circuit board is provided with led light source module 5, be electrically connected the constant-current driving power supply 100 of a nonpolarity differentiation at circuit board, this constant-current driving power supply 100 is the constant-current driving power supply of above-mentioned execution mode, the constant-current driving power supply of this nonpolarity differentiation is connected with first rectifier bridge 6, the first rectifier bridge is connected with the first daylight lamp holder 2, the constant-current driving power supply 100 of nonpolarity differentiation also is connected with second rectifier bridge 7, and the second rectifier bridge 7 is connected with the second daylight lamp holder 3.Because the constant-current driving power supply 100 of the first rectifier bridge 6, the second rectifier bridge 7 and nonpolarity differentiation exists, and when fluorescent lamp is connected power supply, need not to distinguish power positive cathode, and the mode that connects also is to have diversity, and is specific as follows:
With reference to Fig. 5, the first johning knot composition for the utility model LED fluorescent lamp and power supply, if when using the fluorescent lamp among LED fluorescent lamp replacement Fig. 1 of the present utility model, since on the support of traditional fluorescent lamp ballast is arranged, therefore, with the ballast short circuit, starter then need not to take off, the lamp holder that is connected into LED fluorescent lamp one end is live wire (positive source), and the other end is that zero line (power cathode) gets final product, and four conductive poles need not distinguished both positive and negative polarity;
With reference to Fig. 6, the second johning knot composition for the utility model LED fluorescent lamp and power supply, two conductive poles of the first daylight lamp holder 2 of LED fluorescent lamp of the present utility model directly connect the power supply of 85V-265V, and two conductive poles on same the second daylight lamp holder 3 also can directly connect the power supply of 85V-265V.
With reference to Fig. 7, the third johning knot composition for the utility model LED fluorescent lamp and power supply, a conductive pole of the first daylight lamp holder 2 of LED fluorescent lamp of the present utility model connects an end of the power supply of 85V-265V, a conductive pole on the second daylight lamp holder 3 connects the other end of the power supply of 85V-265V, and the conductive pole of the conductive pole of the first daylight lamp holder 2 and the second daylight lamp holder 3 is located along the same line.
With reference to Fig. 8, the 4th kind of johning knot composition for the utility model LED fluorescent lamp and power supply, a conductive pole of the first daylight lamp holder 2 of LED fluorescent lamp of the present utility model connects an end of the power supply of 85V-265V, a conductive pole on the second daylight lamp holder 3 connects the other end of the power supply of 85V-265V, and the conductive pole of the conductive pole of the first daylight lamp holder 2 and the second daylight lamp holder 3 is positioned on the diagonal of same rectangle.
Can find out that by above several connected modes the circuit connecting of LED fluorescent lamp of the present utility model can connect arbitrarily two, perhaps butt and butt, improved cross connect, this fool-proof design that is designed to does not namely possess electric circuit knowledge people user and can use yet, and has enlarged user's the scope of application.
Claims (10)
1. the constant-current driving power supply of nonpolarity differentiation is characterized in that, comprises input current polarity judging unit, is used for judging the polarity of input power; And
The doube bridge switch that is connected with input current polarity judging unit after the electric current that input current polarity judging unit is provided carries out rectification, carries out polarity to the direct current that obtains and switches, and the polarity that makes output current is steady state; And
The constant-current controller that is connected with the doube bridge switch, current value and the magnitude of voltage of the doube bridge switch output current of sampling constantly are to control output current with constant State-output.
2. the constant-current driving power supply of nonpolarity differentiation according to claim 1 is characterized in that, described input current polarity judging unit comprises the first electric capacity (CX1), and the low pass filter that is connected with the first electric capacity (CX1).
3. the constant-current driving power supply of nonpolarity differentiation according to claim 1, it is characterized in that, described doube bridge switch comprises rectifier bridge (U3) and rectification diverter switch, the rectification diverter switch comprises the second electric capacity (C2), the second diode (D2), the 4th diode (D4), the 6th diode (D6) and the 3rd electric capacity (C3), one end of the second electric capacity (C2) is connected with the cathode terminal of the second diode (D2), the anode tap of the second diode (D2) is connected with the cathode terminal of the 4th diode (D4), the anode tap of the other end of the second electric capacity (C2) and the 4th diode (D4) is connected with the cathode terminal of the 6th diode (D6) jointly, one end of the 3rd electric capacity (C3) is connected with the anode tap of the second diode, the other end ground connection of the 3rd electric capacity (C3).
4. the constant-current driving power supply of nonpolarity differentiation according to claim 1 is characterized in that, described constant-current controller comprises the current sample module, gathers the current value of doube bridge switch output current; And
The voltage sample module, the magnitude of voltage of collection doube bridge switch output current; And
The controller that is connected with voltage sample module and current sample module according to the signal that current sample module and voltage sample module provide, sends and makes output current with the control signal of constant current formal output; And
The HF switch that is connected with controller receives the control signal that controller sends, and makes constant output current output; And
Stabilized voltage power supply is converted to stable voltage with the output current of doube bridge switch and supplies with controller.
5. the constant-current driving power supply of nonpolarity differentiation according to claim 4, it is characterized in that, described constant-current controller also comprises current regulator, and an end of this current regulator is connected with the doube bridge output switching terminal, and the other end of current regulator is connected with an end of voltage sample module.
6. the constant-current driving power supply of nonpolarity differentiation according to claim 4, it is characterized in that, described constant-current controller also comprises filter, this filter comprises fast recovery diode (D5), the 9th resistance (R9), instrument transformer (T1), the 21 resistance (R21), the 9th resistance (R9) end connects the anode of fast recovery diode (D5), the other end of the 9th resistance (R9) connects an end of first coil (T1A) of instrument transformer (T1), the other end ground connection of first coil (T1A) of instrument transformer (T1), one end of second coil (T1B) of instrument transformer (T1) connects the doube bridge output switching terminal, the second coil (T1B) other end is connected with an end of HF switch, and the 21 resistance (R21) is connected in parallel on the two ends of the 9th resistance (R9).
7. the constant-current driving power supply of nonpolarity differentiation according to claim 4 is characterized in that, described HF switch is field effect transistor.
8. the constant-current driving power supply of nonpolarity differentiation according to claim 4 is characterized in that, described current sample module is the 20 resistance (R20), and described voltage sample module is photoelectrical coupler.
9. according to claim 1 to the constant-current driving power supply of the described nonpolarity differentiation of 8 any one, it is characterized in that, described driving power also comprises a voltage processor, this voltage processor is connected in the input of input current polarity judging unit, the instrument transformer (T2) that voltage processor comprises piezo-resistance (Z1) and is connected with piezo-resistance.
10. LED fluorescent lamp, the first daylight lamp holder and the second daylight lamp holder that comprise fluorescent tube and be connected to lamp tube ends, be provided with circuit board in the described fluorescent tube, this circuit board is provided with the led light source module, it is characterized in that: the constant-current driving power supply that is electrically connected a nonpolarity differentiation at circuit board, the constant-current driving power supply of this nonpolarity differentiation is connected with first rectifier bridge, the first rectifier bridge is connected with the first daylight lamp holder, the constant-current driving power supply of nonpolarity differentiation also is connected with second rectifier bridge, and the second rectifier bridge is connected with the second daylight lamp holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302203 CN202738182U (en) | 2012-06-26 | 2012-06-26 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302203 CN202738182U (en) | 2012-06-26 | 2012-06-26 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
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|---|---|
| CN202738182U true CN202738182U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220302203 Expired - Fee Related CN202738182U (en) | 2012-06-26 | 2012-06-26 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711341A (en) * | 2012-06-26 | 2012-10-03 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
| CN103796392A (en) * | 2014-02-12 | 2014-05-14 | 昱京科技股份有限公司 | LED lamp structure suitable for common fluorescent lamp |
| CN104540296A (en) * | 2015-01-08 | 2015-04-22 | 福建思科通电子科技有限公司 | Compatible LED intelligent fluorescent lamp tube and control method thereof |
-
2012
- 2012-06-26 CN CN 201220302203 patent/CN202738182U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711341A (en) * | 2012-06-26 | 2012-10-03 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
| CN102711341B (en) * | 2012-06-26 | 2014-06-18 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing |
| CN103796392A (en) * | 2014-02-12 | 2014-05-14 | 昱京科技股份有限公司 | LED lamp structure suitable for common fluorescent lamp |
| CN104540296A (en) * | 2015-01-08 | 2015-04-22 | 福建思科通电子科技有限公司 | Compatible LED intelligent fluorescent lamp tube and control method thereof |
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