CN201479415U - LED lamp tube circuit - Google Patents
LED lamp tube circuit Download PDFInfo
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- CN201479415U CN201479415U CN2009201920829U CN200920192082U CN201479415U CN 201479415 U CN201479415 U CN 201479415U CN 2009201920829 U CN2009201920829 U CN 2009201920829U CN 200920192082 U CN200920192082 U CN 200920192082U CN 201479415 U CN201479415 U CN 201479415U
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Abstract
The utility model relates to an LED lamp tube circuit, which is connected in series with an LED lamp. The LED lamp tube circuit is characterized in that a cathode of a first diode and an anode of a second diode are connected with a first pin; an anode of a third diode and a cathode of a fourth diode are connected with a second pin; a cathode of a fifth diode and an anode of a sixth diode are connected with a third pin; an anode of a seventh diode and a cathode of an eighth diode are connected with the third pin and a fourth pin; an anode of the first diode and an anode of the fourth diode are connected with a cathode of the LED lamp; an anode of the fifth diode and an anode of the eighth diode are connected with the cathode of the LED lamp; a cathode of the sixth diode and a cathode of the seventh diode are connected together and then are connected with an anode of the LED lamp; and a cathode of the second diode and a cathode of the third diode are connected together and are connected with the anode of the LED lamp. The lamp tube circuit of the utility model can perform bidirectional conduction work without considering the anode and cathode installation of the LED lamp, and can guarantee normal luminescence of the LED lamp no matter an input voltage is a DC positive half-wave or a DC negative half-wave to make the replacement installation of an LED lamp tube more convenient.
Description
Technical field
The utility model relates to a kind of lighting apparatus, particularly relates to a kind of LED tube circuit.
Background technology
Fluorescent lamp is a low pressure mercury lamp, and it is to utilize the radiation ultraviolet ray in discharge process of hypobaric mercury vapour, thereby it is luminous to make fluorescent material send the principle of visible light.At present, the device that is used for Filament of fluorescent lamp heating and supply of electrical energy mainly contains Inductive ballast and electric ballast, and electric ballast more is widely used in all kinds of light fixtures owing to have characteristics of energy saving.But, need the high pressure activated phosphor when fluorescent lamp is luminous, there is certain danger; And, when fluorescent lamp is worked, the scintillation (being called stroboscopic) with equifrequent can appear, harm people's health and infringement people's vision system under AC power.Led light source owing to have use low-tension supply, power consumption less, advantages such as stability height, response time weak point, environmentally safe, replacing traditional fluorescent light and be applied to decoration and lighting field.
Because intrinsic electric current, the voltage characteristic of LED itself makes LED not adopt same driving power with ordinary light source.Desirable LED type of drive is to adopt constant voltage, constant current, at present, LED fluorescent lamp on the market is to add a switch drive power supply in the two ends or the back of existing fluorescent lamp tube, and the LED fluorescent tube can replace fluorescent tube directly to insert civil power or use on the lamp panel that adopts Inductive ballast.For the lamp panel that adopts electric ballast, as shown in Figure 7, this circuit of electronic ballast is by an oscillating circuit I, fluorescent tube T, inductance L, capacitor C and PTC (positive temperature coefficient) thermistor RZ forms, AC power becomes the filament that the direct current oscillating voltage outputs to fluorescent lamp T through oscillating circuit I rectifying and wave-filtering, the pin t1 of fluorescent tube T, pin t2 is connected on this direct current oscillating voltage output, and the pin t3 of fluorescent lamp T, pin t4 then is connected the capacitor C two ends, capacitor C and inductance L play the effect of series resonance, under the effect of high pressure, the filament conductive heater of fluorescent tube T, negative ions motion forms gas discharge, excites inside pipe wall fluorescent material and visible light takes place.Because the lamp panel that adopts electric ballast can produce the interchange ripple of a high-frequency and high-voltage (40KHZ) at the output of oscillating circuit I, the common LED lamp pipe is replace fluorescent lamps pipe and being applied in the circuit of electronic ballast directly.
Existing application number is that 200810141701.1 Chinese invention patent " a kind of replace fluorescent lamps pipe uses at the LED fluorescent tube on the fluorescent lamp lamp bracket " relates to a kind of replace fluorescent lamps pipe and uses LED fluorescent tube on the fluorescent lamp lamp bracket, the LED fluorescent tube comprises at least three LED lamps, described LED lamp is connected and is connected in parallel, the internal resistance value of the internal resistance value that makes the LED fluorescent tube during with the fluorescent tube operate as normal that is substituted is identical, with described LED lamp series connection and in parallel, the internal resistance value of the internal resistance value that makes the LED fluorescent tube during with the fluorescent tube operate as normal that is substituted is identical.Though provide the LED fluorescent tube to be installed in the circuit theory diagrams that comprise Inductive ballast and electric ballast lamp bracket in the above-mentioned patent, but this patent directly connects the LED fluorescent tube at the output of ballast 6, if this ballast 6 is an electric ballast, because electric ballast is output as the high-frequency ac ripple, and the electric current that flows through LED has one-way, when the negative half-wave of alternating current flows through the LED lamp, be that the conducting direction of the sense of current and LED lamp is opposite the time, LED just can't operate as normal, even can damage the LED lamp and cause fluorescent tube to scrap, therefore, also there is certain defective in actual use in the circuit in the above-mentioned patent, awaits doing further improvement.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of to need not to consider the cathode and anode directions of LED fluorescent tube and make things convenient for LED fluorescent tube mounted LEDs tube circuit at above-mentioned prior art present situation, and this tube circuit can make the LED fluorescent tube directly replace fluorescent tube and be installed on the lamp bracket that uses Inductive ballast or use on the lamp bracket of electric ballast.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this LED tube circuit, be serially connected with a LED lamp (Td) on this LED tube circuit, the positive pole and the negative pole two ends of described LED lamp (Td) are respectively arranged with a plug, being arranged on wherein, the plug of an end includes first pin (a1), second pin (a2), the plug that is arranged on the other end includes the 3rd pin (b1) and the three or four pin (b2), it is characterized in that: described LED tube circuit includes first diode (D1), second diode (D2), the 3rd diode (D3), the 4th diode (D4), the 5th diode (D5), the 6th diode (D6), the 7th diode (D7) and the 8th diode (D8); Wherein, after connecing altogether, the anode of the negative electrode of described first diode (D1) and second diode (D2) is connected described first pin (a1), after connecing altogether, the negative electrode of the anode of described the 3rd diode (D3) and the 4th diode (D4) is connected described second pin (a2), described the 5th diode (D5) negative electrode be connected described the 3rd pin (b1) after the 6th diode (D6) anode connects altogether, described the 7th diode (D7) anode be connected described the three or four pin (b2) after the 8th diode (D8) negative electrode connects altogether; And, the anode of the anode of described first diode (D1) and described the 4th diode (D4) connects the back altogether and links to each other with the negative pole of described LED lamp (Td), also links to each other with the negative pole of described LED lamp (Td) after the anode of the anode of described the 5th diode (D5) and described the 8th diode (D8) connects altogether; The negative electrode of the negative electrode of described the 6th diode (D6) and described the 7th diode (D7) connects the back altogether and links to each other with the positive pole of described LED lamp (Td), also links to each other with the positive pole of described LED lamp (Td) after the negative electrode of the negative electrode of described second diode (D2) and described the 3rd diode (D3) connects altogether.
Because the reverse cut-off characteristics of diode, when the direct current oscillating voltage produced positive half wave, forward voltage was added in first pin (a1) and second pin (a2) end, second diode (D2) or the 3rd diode (D3) conducting work; And when half-wave is born in the generation of direct current oscillating voltage, forward voltage is added in the 3rd pin (b1) and four-limbed (b2) end, the 6th diode (D6) or the 7th diode (D7) conducting work, promptly when circuit turn-on, the operating current of input all only is carried in separately on second diode (D2) or the 3rd diode (D3) or the 6th diode (D6) or the 7th diode (D7), be easy to cause circuit to work because of electric current excessive two damages diode.In order to protect single diode, realize the shunting action of electric current, be connected with first lead (s1) between described first pin (a1) and second pin (a2), be connected with second lead (s2) between described the 3rd pin (b1) and the three or four pin (b2).So, what no matter import on the plug is positive half wave direct current or negative half-wave DC, because the current/voltage between two pins of input is under the drainage of lead, can be respectively by being connected the diode on each pin, can play certain shunting action, prevent that single diode from damaging because of operating current is excessive, improved the reliability that circuit uses.
In order to improve shunting effect, as preferably, be serially connected with first inductance (L1) on described first lead, be serially connected with second inductance (L2) on described second lead.
In order to play better shunting and electric current guiding function, improve the stability and the reliability of circuit working, assurance LED lamp is worked under constant current, and described LED tube circuit also includes the 9th diode (D9), the tenth diode (D10), the 11 diode (D11) and the 12 diode (D12); Wherein, the negative electrode one tunnel of described the 9th diode (D9) links to each other with the anode of described first diode (D1), another road links to each other with the anode of described the 5th diode (D5), the anode of the 9th diode (D9) links to each other with the negative pole of described LED lamp (Td), the anode of described the tenth diode (D10) also is connected on the negative pole of described LED lamp (Td), the negative electrode one tunnel of the tenth diode (D10) links to each other with the anode of described the 4th diode (D4), and another road links to each other with the anode of described the 8th diode (D8); The negative electrode of described the 11 diode (D11) links to each other with the positive pole of described LED lamp (Td), the anode one tunnel of the 11 diode (D11) links to each other with the negative electrode of described the 6th diode (D6), another road links to each other with the negative electrode of described the 3rd diode (D3), the negative electrode of described the 12 diode (D12) also is connected on the positive pole of described LED lamp (Td), the anode one tunnel of the 12 diode (D12) links to each other with the negative electrode of described the 7th diode (D7), and another road links to each other with the negative electrode of described second diode (D2).
For accelerating second diode (D2), the 4th diode (D4), the conducting of the 5th diode (D5) and the 7th diode (D7), shorten the ON time of LED lamp, also include first electric capacity of using as speed-up capacitor (C1), second electric capacity (C2), the 3rd electric capacity (C3) and the 4th electric capacity (C4), wherein, described first electric capacity (C1) is connected in parallel on the two ends of described second diode (D2), described second electric capacity (C2) is connected in parallel on the two ends of described the 4th diode (D4), described the 3rd electric capacity (C3) is connected in parallel on the two ends of described the 5th diode (D5), and described the 4th electric capacity (C4) is connected in parallel on the two ends of described the 7th diode (D7).
When preventing that circuit from just having started, excessive rush of current LED lamp and cause fluorescent tube to damage, also include the 3rd inductance (L3), the 3rd inductance plays certain current buffering effect, one end of the 3rd inductance (L3) links to each other with the positive pole of described LED lamp (Td), and the other end of the 3rd inductance (L3) connects altogether with the negative electrode of the negative electrode of described the 11 diode (D11), the 12 diode (D12) respectively and is a bit.
For operating voltage and the current requirements that the resistance that satisfies circuit working requires and satisfies each light-emitting diode, described LED lamp (Td) can be gone here and there and be connect and combine by a plurality of light-emitting diodes (led).
Compared with prior art, advantage of the present utility model is: be core with the diode, but designed a kind of mounting anode and cathode that need not to consider the LED lamp and the tube circuit of two-way admittance work, no matter input voltage is the negative half-wave of direct current positive half wave or direct current to this tube circuit, can both guarantee the normally luminous of LED lamp, reduce the difficulty of installation and maintenance, prolonged the useful life of LED lamp work, improved reliability and fail safe that fluorescent tube uses; This LED tube circuit can directly be replaced the interior fluorescent tube of existing lamp support by enough LED fluorescent tubes, and be complementary with the circuit of electronic ballast or the Inductive ballast circuit that are applied on the fluorescent lamp, make that the replacement installation of LED fluorescent tube is more easy, range of application is more extensive.
Description of drawings
Fig. 1 is the circuit connection structure figure of the utility model embodiment one.
Fig. 2 is the circuit connection structure figure of the utility model embodiment two.
Fig. 3 is the circuit connection structure figure of the utility model embodiment three.
Fig. 4 is the circuit connection structure figure of the utility model embodiment four.
Fig. 5 is the circuit connection structure figure of the utility model embodiment five.
Fig. 6 is the lamp tube connection structure schematic diagram of the utility model embodiment.
Fig. 7 is an electronic ballast for fluoresent lamp drive circuit schematic diagram of the prior art.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 6, lamp tube connection structure figure for the utility model embodiment, this fluorescent tube includes a circuit board 1 that the LED tube circuit is installed, one by a plurality of light-emitting diodes 2 (in the circuit diagram of Fig. 1～Fig. 5, this light-emitting diode 2 promptly is denoted as led) go here and there and connect the LED lamp Td that combines, lampshade 3, the radiator 4 and the lamp socket 6 that are used for mounting circuit boards 1, be provided with circuit of electronic ballast (also can be Inductive ballast) in the lamp socket 6, the vibration direct voltage of circuit of electronic ballast output one high voltagehigh frequency after over commutation filters, circuit board 1 can be connected to one with the LED lamp, also circuit board 1 can be linked to each other with circuit of electronic ballast and be fixedly mounted in the lamp socket 6;
The positive pole of LED lamp Td and negative pole two ends are respectively arranged with first plug 51 and second plug 52 of an external direct current oscillating voltage, being positioned at wherein, first plug 51 of an end includes the first pin a1, the second pin a2, second plug 52 that is positioned at the other end includes the 3rd pin b1 and four-limbed b2, four pins of this LED lamp respectively with prior art in four pin correspondences of fluorescent lamp T in (as shown in Figure 7), can be directly with LED lamp replacement fluorescent lamp and be installed in the ballast circuit;
In each cycle of oscillation, when input voltage was the direct current positive half wave, the first pin a1 or the second pin a2 were input, and the 3rd pin b1 or four-limbed b2 are output; When voltage was the negative half-wave of direct current, the 3rd pin b1 or four-limbed b2 were input, and the first pin a1 or the second pin a2 are output.
Embodiment one, referring to Fig. 1:
In the present embodiment, this LED tube circuit includes the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7 and the 8th diode D8; Wherein, after connecing altogether, the anode of the negative electrode of the first diode D1 and the second diode D2 is connected the first pin a1, after connecing altogether, the negative electrode of the anode of the 3rd diode D3 and the 4th diode D4 is connected the second pin a2, the 5th diode D5 negative electrode be connected the 3rd pin b1 after the 6th diode D6 anode connects altogether, the 7th diode D7 anode be connected four-limbed b2 after the 8th diode D8 negative electrode connects altogether; And the anode of the anode of the first diode D1 and the 4th diode D4 connects the back altogether and links to each other with the negative pole of LED lamp Td, also links to each other with the negative pole of LED lamp Td after the anode of the anode of the 5th diode D5 and the 8th diode D8 connects altogether; The negative electrode of the negative electrode of the 6th diode D6 and the 7th diode D7 connects the back altogether and links to each other with the positive pole of LED lamp Td, also links to each other with the positive pole of LED lamp Td after the negative electrode of the negative electrode of the second diode D2 and the 3rd diode D3 connects altogether.
When the voltage on being connected on fluorescent tube is the direct current positive half wave, connect positive polarity if set the first pin a1, the 3rd pin b1 connects the voltage negative pole, the second pin a2 and four-limbed b2 are unsettled, at this moment, electric current forms the loop through the first pin a1, the second diode D2, LED lamp Td, the 5th diode D5 and the 3rd pin b1, and the LED lamp is normally luminous;
When the voltage on being connected on fluorescent tube is the negative half-wave of direct current, connect positive polarity if set four-limbed b2, the second pin a2 connects the voltage negative pole, the 3rd pin b1, the first pin a1 are unsettled, at this moment, electric current then forms the loop through four-limbed b2, the 7th diode D7, LED lamp Td, the 4th diode D4 and the second pin a2, and the LED lamp is normally luminous.
Embodiment two, referring to Fig. 2:
The difference of present embodiment two and embodiment one is, is connected with the first lead s1 between the first pin a1 and the second pin a2, is connected with the second lead s2 between the 3rd pin b1 and the four-limbed b2.
The first lead s1 and the second lead s2 can realize the shunting action of electric current, when the first pin a1 and the second pin a2 are input, if the first pin a1 is an electrode input end, the second pin a2 is unsettled, at this moment, the second diode D2 conducting, the 3rd diode D3 also conducting work under the shunting action of the first lead s1; When the 3rd pin b1 and four-limbed b2 are input, if the 3rd pin b1 is an electrode input end, four-limbed b2 is unsettled, then the 6th diode D6 conducting, the 7th diode D7 also conducting under the second lead s2 shunting action, therefore, the first lead s1 and the second lead s2 play shunting action respectively, avoid operating current all to be added on the single diode and damage diode, improved the reliability of circuit working.
In order further to improve shunting effect, can be serially connected with on the first lead s1 on first inductance L, 1, the second lead s2 and can be serially connected with second inductance L 2, because inductance has the accumulation of energy characteristic, shunting effect is better.
Embodiment three, referring to Fig. 3:
Interference for fear of high-frequency signal, further improve shunting effect and guide current trend, improve the stability of LED tube circuit, embodiment three has also increased the 9th diode D9, the tenth diode D10, the 11 diode D11 and the 12 diode D12 on the basis of embodiment two;
Wherein, the negative electrode one tunnel of the 9th diode D9 links to each other with the anode of the first diode D1, another road links to each other with the anode of the 5th diode D5, the anode of the 9th diode D9 links to each other with the negative pole of LED lamp Td, the anode of the tenth diode D10 also is connected on the negative pole of LED lamp Td, the negative electrode one tunnel of the tenth diode D10 links to each other with the anode of the 4th diode D4, and another road links to each other with the anode of the 8th diode D8; The negative electrode of the 11 diode D11 links to each other with the positive pole of LED lamp Td, the anode one tunnel of the 11 diode D11 links to each other with the negative electrode of the 6th diode D6, another road links to each other with the negative electrode of the 3rd diode D3, the negative electrode of the 12 diode D12 also is connected on the positive pole of LED lamp Td, the anode one tunnel of the 12 diode D12 links to each other with the negative electrode of the 7th diode D7, and another road links to each other with the negative electrode of the second diode D2.
So, when input voltage is the direct current positive half wave, suppose that the first pin a1 is an input, the 3rd pin b1 is an output, the second pin a2 and four-limbed b2 are unsettled, at this moment, electric current one tunnel flows to the positive pole of LED lamp Td through the first pin a1, the second diode D2, the 12 diode D12, and another road first pin a1, first inductance L 1, the 3rd diode D3, the 11 diode D11 flow to the positive pole of LED lamp Td; Electric current is divided into two-way then after the negative pole of LED lamp Td flows out, the one tunnel flows out from the 3rd pin b1 through the 9th diode D9, the 5th diode D5, and another Lu Jingdi ten diode D10, the 8th diode D8, second inductance L 2 flow out from the 3rd pin b1;
When input voltage is the negative half-wave of direct current, also be as a same reason, electric current can be imported through the 6th diode D6 and the 7th diode D7 respectively from the 3rd pin b1 or four-limbed b2, flows out from the first pin a1 or the second pin a2 through the first diode D1 and the 4th diode D4 respectively through LED lamp Td then.Because electric current all is that two-way is parallel from being input to output, make input current be diverted to respectively on each diode, balance the operating current on the diode, prolonged the useful life of diode, and then improved the reliability of circuit working.
Embodiment four, referring to Fig. 4:
In order to accelerate the conducting of the second diode D2, the 4th diode D4, the 5th diode D5 and the 7th diode D7, shorten the ON time of LED lamp Td, embodiment four has also increased by first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3 and the 4th capacitor C of using as speed-up capacitor 4 on the basis of embodiment three, wherein, first capacitor C 1 is connected in parallel on the two ends of the second diode D2, second capacitor C 2 is connected in parallel on the two ends of the 4th diode D4, the 3rd capacitor C 3 is connected in parallel on the two ends of the 5th diode D5, and the 4th capacitor C 4 is connected in parallel on the two ends of the 7th diode D7.And, between first capacitor C 1, second capacitor C 2 and first inductance L 1, and also form filter circuit respectively between the 3rd capacitor C 3, the 4th capacitor C 4 and second inductance L 2, and can the high-frequency high-voltage direct-current signal of input be filtered, reduce the interference of high-frequency signal to circuit.
Embodiment five, referring to Fig. 5:
When preventing that circuit from just having started, excessive rush of current LED lamp and cause fluorescent tube to damage, can also increase the 3rd inductance L 3 that plays certain current buffering effect in the circuit, present embodiment promptly is the further improvement of making on the basis of embodiment four, one end of the 3rd inductance L 3 links to each other with the positive pole of LED lamp Td, and the other end of the 3rd inductance L 3 connects altogether with the negative electrode of the negative electrode of the 11 diode D11, the 12 diode D12 respectively and is a bit.
The operation principle of present embodiment is as follows:
When voltage is positive half wave, suppose that the second pin a2 is an input, four-limbed b2 is an output, wherein, the first pin a1 and the 3rd pin b1 are unsettled, so, electric current is imported from the second pin a2, through 1 shunting of first inductance L, one the tunnel through the second diode D2, the 12 diode D12, the 3rd inductance L 3 is to LED lamp Td positive pole, another Lu Jingdi three diode D3, the 11 diode D11, the 3rd inductance L 3 is to LED lamp Td positive pole, electric current is divided into two-way again after the negative pole output of this LED lamp Td, at this moment, the first diode D1 and the 4th diode D4 are in reverse blocking state, so electric current one tunnel is through the 9th diode D9, the 5th diode D5, second inductance L 2 is from four-limbed b2 output, another Lu Jingdi ten diode D10, the 8th diode D8 exports from four-limbed b2;
When voltage is when bearing half-wave, suppose that four-limbed b2 is an input, the second pin a2 is an output, the 3rd pin b1 and the first pin a1 are unsettled, so, electric current is imported from four-limbed b2, through 2 shuntings of second inductance L, one the tunnel through the 6th diode D6, the 11 diode D11, the 3rd inductance L 3 is to LED lamp Td positive pole, another Lu Jingdi seven diode D7, the 12 diode D12, the 3rd inductance L 3 is to LED lamp Td positive pole, electric current is divided into two-way again after the negative pole output of this LED lamp Td, at this moment, the 5th diode D5, the 8th diode D8 oppositely ends, and electric current one tunnel is through the 9th diode D9, the first diode D1, first inductance L 1 is exported from the second pin a2, another Lu Jingdi ten diode D10, the 4th diode D4 exports from the second pin a2.
LDE tube circuit of the present utility model is still born half-wave no matter the direct current oscillating voltage of input LED lamp is a positive half wave, the LED lamp is all normally luminous, the user need not to consider the both positive and negative polarity installation direction of lamp tube socket when the LED fluorescent tube is installed, make the LED fluorescent tube can directly replace fluorescent tube and match with electronics or Inductive ballast in the prior art tube stand, reduce design cost, made the installation of fluorescent tube replace and safeguard more convenient.
Claims (5)
1. LED tube circuit, be serially connected with a LED lamp (Td) on this LED tube circuit, the positive pole and the negative pole two ends of described LED lamp (Td) are respectively arranged with a plug, being arranged on wherein, the plug of an end includes first pin (a1), second pin (a2), the plug that is arranged on the other end includes the 3rd pin (b1) and four-limbed (b2), it is characterized in that: described LED tube circuit includes first diode (D1), second diode (D2), the 3rd diode (D3), the 4th diode (D4), the 5th diode (D5), the 6th diode (D6), the 7th diode (D7) and the 8th diode (D8);
Wherein, after connecing altogether, the anode of the negative electrode of described first diode (D1) and second diode (D2) is connected described first pin (a1), after connecing altogether, the negative electrode of the anode of described the 3rd diode (D3) and the 4th diode (D4) is connected described second pin (a2), described the 5th diode (D5) negative electrode be connected described the 3rd pin (b1) after the 6th diode (D6) anode connects altogether, described the 7th diode (D7) anode be connected described the three or four pin (b2) after the 8th diode (D8) negative electrode connects altogether;
And, the anode of the anode of described first diode (D1) and described the 4th diode (D4) connects the back altogether and links to each other with the negative pole of described LED lamp (Td), also links to each other with the negative pole of described LED lamp (Td) after the anode of the anode of described the 5th diode (D5) and described the 8th diode (D8) connects altogether; The negative electrode of the negative electrode of described the 6th diode (D6) and described the 7th diode (D7) connects the back altogether and links to each other with the positive pole of described LED lamp (Td), also links to each other with the positive pole of described LED lamp (Td) after the negative electrode of the negative electrode of described second diode (D2) and described the 3rd diode (D3) connects altogether.
2. LED tube circuit according to claim 1 is characterized in that: be connected with first lead (s1) between described first pin (a1) and second pin (a2), be connected with second lead between described the 3rd pin (b1) and the three or four pin (b2).
3. LED tube circuit according to claim 2 is characterized in that: be serially connected with first inductance (L1) on described first lead (s1), be serially connected with second inductance (L2) on described second lead (s2).
4. LED tube circuit according to claim 3 is characterized in that: described LED tube circuit also includes the 9th diode (D9), the tenth diode (D10), the 11 diode (D11) and the 12 diode (D12);
Wherein, the negative electrode one tunnel of described the 9th diode (D9) links to each other with the anode of described first diode (D1), another road links to each other with the anode of described the 5th diode (D5), the anode of the 9th diode (D9) links to each other with the negative pole of described LED lamp (Td), the anode of described the tenth diode (D10) also is connected on the negative pole of described LED lamp (Td), the negative electrode one tunnel of the tenth diode (D10) links to each other with the anode of described the 4th diode (D4), and another road links to each other with the anode of described the 8th diode (D8);
The negative electrode of described the 11 diode (D11) links to each other with the positive pole of described LED lamp (Td), the anode one tunnel of the 11 diode (D11) links to each other with the negative electrode of described the 6th diode (D6), another road links to each other with the negative electrode of described the 3rd diode (D3), the negative electrode of described the 12 diode (D12) also is connected on the positive pole of described LED lamp (Td), the anode one tunnel of the 12 diode (D12) links to each other with the negative electrode of described the 7th diode (D7), and another road links to each other with the negative electrode of described second diode (D2).
5. LED tube circuit according to claim 4, it is characterized in that: also include first electric capacity (C1), second electric capacity (C2), the 3rd electric capacity (C3) and the 4th electric capacity (C4), wherein, described first electric capacity (C1) is connected in parallel on the two ends of described second diode (D2), described second electric capacity (C2) is connected in parallel on the two ends of described the 4th diode (D4), described the 3rd electric capacity (C3) is connected in parallel on the two ends of described the 5th diode (D5), and described the 4th electric capacity (C4) is connected in parallel on the two ends of described the 7th diode (D7).
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| CN2009201920829U CN201479415U (en) | 2009-08-31 | 2009-08-31 | LED lamp tube circuit |
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| CN2009201920829U CN201479415U (en) | 2009-08-31 | 2009-08-31 | LED lamp tube circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032539A (en) * | 2010-10-28 | 2011-04-27 | 映瑞光电科技(上海)有限公司 | Lighting circuit |
| CN102454891A (en) * | 2010-10-22 | 2012-05-16 | 达能科技股份有限公司 | Two-loop LED lamp tube and lamp group |
| TWI477188B (en) * | 2012-07-27 | 2015-03-11 | Justenergy Technology Corp | LED tube |
-
2009
- 2009-08-31 CN CN2009201920829U patent/CN201479415U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454891A (en) * | 2010-10-22 | 2012-05-16 | 达能科技股份有限公司 | Two-loop LED lamp tube and lamp group |
| CN102032539A (en) * | 2010-10-28 | 2011-04-27 | 映瑞光电科技(上海)有限公司 | Lighting circuit |
| CN102032539B (en) * | 2010-10-28 | 2012-11-21 | 映瑞光电科技(上海)有限公司 | Lighting circuit |
| US9345086B2 (en) | 2010-10-28 | 2016-05-17 | Enraytek Optoelectronics Co., Ltd. | Lighting circuit |
| TWI477188B (en) * | 2012-07-27 | 2015-03-11 | Justenergy Technology Corp | LED tube |
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