CN201898450U - Power converter and light-emitting diode (LED) lamp - Google Patents
Power converter and light-emitting diode (LED) lamp Download PDFInfo
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- CN201898450U CN201898450U CN2010900005316U CN201090000531U CN201898450U CN 201898450 U CN201898450 U CN 201898450U CN 2010900005316 U CN2010900005316 U CN 2010900005316U CN 201090000531 U CN201090000531 U CN 201090000531U CN 201898450 U CN201898450 U CN 201898450U
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Abstract
The utility model relates to a power converter and a light-emitting diode (LED) lamp. On the basis of a converting circuit of the traditional power converter, a boosting circuit is added, and a voltage doubling rectifying filter circuit is adopted for boosting, rectification and filtration at the same time to stabilize the circuit and prevent the phenomenon that an LED light-emitting body dithers, does not work or is burnt out. The power converter has a simpler structure and can convert input power frequency, low frequency and direct currents. After an electro-magnetic interference (EMI) filter circuit is added, a high-frequency interference signal can be inhibited; EMI can be effectively inhibited by a constant-current output circuit; and the electro-magnetic interference can be reduced to the minimum. After a piezoresistor is connected between the voltage doubling rectifying filter circuit and the constant-current output circuit in parallel, a constant-current driving chip is not burnt off because of over high current when the output end of the converting circuit is not loaded. Since the power converter is arranged to convert the LED lamp, the volume limitation is broken through; and under the present condition that chip integration is not high, the maximum output power of the power converter can be up to 4 to 12W by adding the EMI filter circuit and the boosting circuit, and the operation is stable.
Description
[technical field]
The invention belongs to the electric lighting technical field, relate to a kind of power supply changeover device and LED lamp, be specifically related to a kind of be used to the transfer power supply changeover device of led light source and the LED lamp that is integrated with this power supply changeover device.
[background technology]
Because of the principle of luminosity of restriction of the size of MR16 Lamp cup and Halogen lamp LED has determined the cold shot-light of traditional MR16 is to adopt Halogen lamp LED as light source mostly, it is very little that but its power all is difficult to accomplish, in the energy more and more rare today, it will certainly be substituted by the led light source of energy-conserving and environment-protective.And owing to Halogen lamp LED is worked under communication environment, and led light source is worked under DC environment, think that the power supply of Halogen lamp LED power supply can not directly power for LED, if directly halide lamp power supply is replaced to the LED power supply then can cause very huge waste, can touch 110V～220V alternating current when changing power supply simultaneously, so need the professional to go construction, then the human cost of Geng Huaning is also very high.So consider after the output of halide lamp power supply increases power supply changeover device, to power to the LED lamp again, perhaps directly behind the change-over circuit of LED lamp internal integration power supply changeover device, directly connect halide lamp power supply.
The voltage of most of MR16 halide lamp power supply output is high frequency (10K HZ～40K HZ) low pressure (12V) alternating current, and the operating current of LED is a direct current, and the LED forward current can increase along with the rising of temperature, for fear of causing light decay, so need elder generation that the AC rectification of 12V is become direct current, and then constant current output.Number of patent application is: 200710164780.3 Chinese invention patent discloses a kind of MR16 type high-capacity LED lamp, its drive circuit comprises current rectifying and wave filtering circuit and constant current output circuit, the 12V alternating current is exported 14V～18V direct current behind rectifying and wave-filtering, export to the LED luminous element less than 12V again after the constant current output circuit step-down.And because the maximum output current of constant current output circuit is 1A, so this drive circuit peak power output only is 3W, if will connect this drive circuit greater than the LED luminous element of 4W by force, then can cause the LED luminous element jitter phenomenon to occur or do not work, even burn the LED luminous element.
Because the high-frequency signal of halide lamp power supply output can produce interference to constant-current circuit, flash phenomenon simultaneously so the LED luminous element can occur.
And because the cold shot-light afterbody of MR16 is provided with the cavity volume restriction of drive circuit board, makes to be difficult on the existing circuit board basis and improve, make it can put into the afterbody cavity, can drive the above LED luminous element of 4W again.
[summary of the invention]
The present invention is just in order to solve the above problems the LED lamp that has proposed a kind of novel power supply changeover device and be integrated with this power supply changeover device, this power supply changeover device has increased booster circuit on the basis of above-mentioned drive circuit, make this power supply changeover device peak power output can reach 12W, increased the EMI filter circuit simultaneously, EMI has been carried out effective inhibition.
Concrete technical scheme of the present invention is as follows:
The invention provides a kind of power supply changeover device, comprise change-over circuit, described change-over circuit comprises current rectifying and wave filtering circuit, the constant current output circuit that is connected with rectification filter circuit output end, it is characterized in that, this change-over circuit also comprises booster circuit, is used for offering constant current output circuit after the voltage rising with the change-over circuit input.
Booster circuit and current rectifying and wave filtering circuit are formed the current rectifying and wave filtering circuit that boosts, the output of the described current rectifying and wave filtering circuit that boosts is connected with constant current output circuit, this current rectifying and wave filtering circuit that boosts is made up of four rectifier diodes and two electric capacity, the positive pole of first rectifier diode and the negative pole of second rectifier diode are connected the first input end of this current rectifying and wave filtering circuit that boosts jointly, the negative pole of the positive pole of the 3rd rectifier diode and the 4th rectifier diode is connected second input of this current rectifying and wave filtering circuit that boosts jointly, the negative pole of the negative pole of first rectifier diode and the 3rd rectifier diode is connected the positive pole of first electric capacity jointly, the anodal negative pole that is connected second electric capacity jointly of the positive pole of second rectifier diode and the 4th rectification, anodal second input that is connected this current rectifying and wave filtering circuit that boosts jointly of the negative pole of first electric capacity and second electric capacity; First output of current rectifying and wave filtering circuit of boosting connects the positive pole of first electric capacity, and second output of the current rectifying and wave filtering circuit that boosts connects the negative pole of second electric capacity.
Described constant current output circuit is by a constant-current driven chip, one resistance and a diode, one inductance and two electric capacity that is connected in series is formed, first stitch of constant-current driven chip links to each other with the positive pole of diode, the negative pole of this diode connects first output and an end of resistance and second stitch of constant-current driven chip of the current rectifying and wave filtering circuit that boosts simultaneously, the other end of this resistance connects the 3rd stitch of constant-current driven chip, the 4th stitch of constant-current driven chip connects second output of the current rectifying and wave filtering circuit that boosts, one end of described inductance connects the positive pole of diode, the other end of inductance is connected between two electric capacity, and two of two electric capacity connects second output of the other end of described resistance and the current rectifying and wave filtering circuit that boosts respectively; First output of constant current output circuit is connected with the other end of described resistance, and second output of constant current output circuit is connected between two electric capacity.
Described change-over circuit also comprises the EMI filter circuit that links to each other with the input of the current rectifying and wave filtering circuit that boosts, described EMI filter circuit is made up of a transformer and an electric capacity, this transformer comprises two inductance, the output of first inductance and the first input end of the current rectifying and wave filtering circuit that boosts are connected an end of electric capacity jointly, and the output of second inductance and second input of the current rectifying and wave filtering circuit that boosts are connected the other end of this electric capacity jointly.
Described change-over circuit also comprises a piezo-resistance, one end of described piezo-resistance is connected between the first input end of first output of the current rectifying and wave filtering circuit that boosts and constant current output circuit, and the other end of this piezo-resistance is connected between second input of second output of the current rectifying and wave filtering circuit that boosts and constant current output circuit.
Described change-over circuit also comprises even divider resistance, and first divider resistance is connected on the first input end of EMI filter circuit, and second divider resistance is connected on first output of constant current output circuit.
Described constant-current driven chip also comprises the 5th stitch, and the 5th stitch is used to obtain pwm signal.
Described power supply changeover device also comprises shell, described change-over circuit setting in the enclosure, described power supply changeover device also comprises input adapter and out splice going splice, described input adapter connects the input of shell, described out splice going splice is connected with the output of shell by lead, described input adapter is provided with two stitch, and described out splice going splice is provided with two pin holes.Two inputs of described change-over circuit connect two stitch respectively, and two outputs of described change-over circuit connect two pin holes respectively.
The another kind of LED lamp of the present invention comprises the LED luminous element group that change-over circuit and a plurality of LED luminous element connection in series-parallel are formed, and the output of described change-over circuit connects LED luminous element group, and described change-over circuit is aforesaid change-over circuit.
Beneficial technical effects of the present invention is:
1. on the basis of existing change-over circuit, increased booster circuit, make the change-over circuit peak power output can reach 4W～12W, adopt simultaneously that the voltage multiplying rectifier filter circuit boosts, rectification and filtering, make circuit stable, can the LED luminous element do not shake, do not work or burn phenomenon, and structure is simpler, all can compatible conversion to power frequency, low frequency and the direct current of input.
2. after having increased the EMI filter circuit, can produce high-frequency interferencing signal and suppress, and constant current output circuit also can be reduced to electromagnetic interference minimum to effectively inhibition of EMI generation.
3. boosting between current rectifying and wave filtering circuit and the constant current output circuit after the piezo-resistance in parallel, making that constant-current driven chip is unlikely to burn because of electric current is excessive when the output of change-over circuit is unloaded.
4. by power supply changeover device switching LED lamp is set, make power supply changeover device break through volume restrictions, under the not high situation of current chip integrated level, can be by increasing EMI filter circuit and booster circuit, make the peak power output of change-over circuit can reach 4W～12W, and stable.
[description of drawings]
Fig. 1 is the perspective view of the embodiment of the invention 1 and embodiment 2;
Fig. 2 is the circuit diagram of the embodiment of the invention 1 change-over circuit;
Fig. 3 is the circuit diagram of the embodiment of the invention 2 change-over circuits;
Fig. 4 is the circuit diagram of the embodiment of the invention 3 change-over circuits.
[embodiment]
The present invention relates to a kind of be used to the transfer power supply changeover device of led light source and the LED lamp that is integrated with this power supply changeover device change-over circuit.The invention will be further elaborated and explanation below in conjunction with specific embodiment and Figure of description:
As shown in Figure 1, present embodiment provides a kind of power supply changeover device, this power supply changeover device comprises shell 1 and is arranged at the change-over circuit 2 (not looking among the figure) of shell 1 inside, described power supply changeover device also comprises input adapter 3 and out splice going splice 4, described input adapter 3 connects the input 11 of shell, described out splice going splice 4 is connected with the output 12 of shell by lead, and described input adapter 3 is provided with two stitch 31, and described out splice going splice 4 is provided with two pin holes 41.Two inputs of described change-over circuit connect two stitch 31 respectively, and two outputs of described change-over circuit connect two pin holes 41 respectively.
As shown in Figure 2, described change-over circuit 2 comprise EMI filter circuit 21, the current rectifying and wave filtering circuit 22 that boosts, constant current output circuit 23.Described EMI filter circuit 21 is made of transformer T1 and capacitor C 1, this transformer T1 comprises two inductance, one end of inductance L 1 is the first input end 211 of EMI filter circuit 21, first output of described EMI filter circuit 21 is gone into end 211 and be the first input end of change-over circuit 2, first input end 221 common ends that are connected capacitor C 1 of the other end of inductance L 1 and the current rectifying and wave filtering circuit 22 that boosts; One end of inductance L 2 is second input 212 of EMI filter circuit 21, second input 212 of this EMI filter circuit 21 is second input of change-over circuit 2, and second input 222 of the other end of inductance L 2 and the current rectifying and wave filtering circuit 22 that boosts is connected the other ends of this capacitor C 1 jointly.The described current rectifying and wave filtering circuit 22 that boosts is by four rectifier diode D1, D2, D3, D4 and two capacitor C 2, C3 constitutes, the negative pole of the positive pole of rectifier diode D1 and rectifier diode D2 is connected the first input end 221 of this current rectifying and wave filtering circuit 22 that boosts jointly, the negative pole of the positive pole of rectifier diode D3 and rectifier diode D4 is connected second input 222 of this current rectifying and wave filtering circuit that boosts jointly, the negative pole of rectifier diode D1 and the negative pole of rectifier diode D3 are connected the positive pole of capacitor C 2 jointly, the anodal negative pole that is connected capacitor C 3 jointly of the negative pole of rectifier diode D2 and rectifier diode D4, anodal second input 222 that is connected this current rectifying and wave filtering circuit 22 that boosts jointly of the negative pole of capacitor C 2 and capacitor C 3; First output 223 of current rectifying and wave filtering circuit 22 of boosting connects the positive pole of capacitor C 2, and second output 224 of the current rectifying and wave filtering circuit 22 that boosts connects the negative pole of capacitor C 3.Described constant current output circuit 23 is made of capacitor C 4, the C5 that constant-current driven chip IC1, resistance R 1, diode D5, inductance L 3 and two are connected in series, the stitch 10 of constant-current driven chip IC1 links to each other with the positive pole of diode D5, the negative pole of this diode D5 connects first output 223 and an end of resistance R 1 and the stitch 20 of constant-current driven chip IC1 of the current rectifying and wave filtering circuit 22 that boosts simultaneously, the other end of this resistance R 1 connects the stitch 30 of constant-current driven chip IC1, and the stitch 40 of constant-current driven chip IC1 connects second output 224 of the current rectifying and wave filtering circuit that boosts.Described constant-current driven chip IC1 also comprises stitch 50, this stitch 50 is used to obtain pwm signal, one end of described inductance L 3 connects the positive pole of diode D5, the other end of inductance L 3 is connected between capacitor C 4 and the capacitor C 5, and two of capacitor C 4 and capacitor C 5 is connected second output 224 of the other end of described resistance R 1 and the current rectifying and wave filtering circuit 22 that boosts respectively; First output 231 of constant current output circuit 23 is connected with the other end of described resistance R 1, and second output 232 of constant current output circuit 23 is connected between two capacitor C 4, the C5.First output 231 of described constant current output circuit 23 is first output of change-over circuit, and second output 232 of described constant current output circuit 23 is second output of change-over circuit.
When the input input 6～12V of change-over circuit high-frequency alternating current, electric current is behind EMI filter circuit 21, EMI has obtained inhibition, again behind the current rectifying and wave filtering circuit 22 that boosts, voltage is elevated to more than 2 times, and obtained rectifying and wave-filtering, interchange has become stable direct current, the stable DC electricity that forms is supplied with constant current output circuit 23, constant-current driven chip IC1 changes the electric current of output by the resistance of regulating resistance R 1, this output current is a constant current, constant-current driven chip IC1, diode D5 and inductance L 3 constitute the buck reduction voltage circuit, make voltage drop to 6～12V again, the circuit that inductance L 3 and capacitor C 4 and capacitor C 5 constitute can further suppress EMI, and it is minimum that electromagnetic interference is reduced to.
In the described current rectifying and wave filtering circuit 22 that boosts, the booster circuit that rectifier diode D1, D2 and capacitor C 2, C3 constitute plays the function of voltage multiplying rectifier filtering, and the circuit that rectifier diode D3, D4 constitute plays the function of rectification.
The power supply changeover device that present embodiment provides is not only applicable to the conversion of 6～12V high-frequency alternating current, also is applicable to 6～12V power frequency, low frequency ac conversion and 12V～24V direct current conversion, and the output peak power can reach 12W, and maximum current can reach 1A.
When the change-over circuit of the power supply changeover device that provides in the above-described embodiments is unloaded; the power supply that connects at the input adapter of power supply changeover device does not have under the protective circuit situation; the electric current that constant-current driven chip can occur is excessive and burn; so on the basis of embodiment 1, described change-over circuit has been done following improvement:
As shown in Figure 3, described change-over circuit 2 also comprises piezo-resistance VR1, the end of described piezo-resistance VR1 connects first output 223 of the current rectifying and wave filtering circuit 22 that boosts, and the other end of this piezo-resistance VR1 connects second output 224 of the current rectifying and wave filtering circuit 22 that boosts.Described change-over circuit 2 also comprises and connects divider resistance FR1 and FR2, and first input end 211, the second divider resistance FR2 that divider resistance FR1 is connected on EMI filter circuit 21 are connected on first output 231 of constant current output circuit 23.
Present embodiment is by boosting between current rectifying and wave filtering circuit 22 and the constant-current circuit 23 behind the piezo-resistance VR1 in parallel, make when the output of change-over circuit 2 is unloaded, piezo-resistance plays the effect of shunting, is unlikely to excessive because of electric current, and constant-current driven chip is burnt.
Present embodiment provides a kind of LED lamp, as shown in Figure 4, this LED lamp comprises that as embodiment 1 described change-over circuit 2 and LED luminous element group 5 output of change-over circuit connects LED luminous element group 5, and described LED luminous element group 5 is that a plurality of LED luminous element series and parallels constitute.The rated power of described LED luminous element rent 50 is 4W～12W.Because the LED luminous element group and the change-over circuit of the LED lamp that embodiment provides link together, so the situation of change-over circuit zero load can not occur, need not to set up piezo-resistance VR1.
Need to prove; those skilled in the art can also expect other technical scheme easily at the above embodiments; as long as these technical schemes in design scope of the present invention, should be equal to the technical scheme of this patent, belong to the protection range of this patent.
Claims (9)
1. power supply changeover device, comprise change-over circuit, described change-over circuit comprises current rectifying and wave filtering circuit, the constant current output circuit that is connected with rectification filter circuit output end, it is characterized in that, this change-over circuit also comprises booster circuit, is used for offering constant current output circuit after the voltage rising with the change-over circuit input.
2. power supply changeover device according to claim 1, it is characterized in that, booster circuit and current rectifying and wave filtering circuit are formed the current rectifying and wave filtering circuit that boosts, the output of the described current rectifying and wave filtering circuit that boosts is connected with constant current output circuit, this current rectifying and wave filtering circuit that boosts is made up of four rectifier diodes and two electric capacity, the positive pole of first rectifier diode and the negative pole of second rectifier diode are connected the first input end of this current rectifying and wave filtering circuit that boosts jointly, the negative pole of the positive pole of the 3rd rectifier diode and the 4th rectifier diode is connected second input of this current rectifying and wave filtering circuit that boosts jointly, the negative pole of the negative pole of first rectifier diode and the 3rd rectifier diode is connected the positive pole of first electric capacity jointly, the anodal negative pole that is connected second electric capacity jointly of the positive pole of second rectifier diode and the 4th rectification, anodal second input that is connected this current rectifying and wave filtering circuit that boosts jointly of the negative pole of first electric capacity and second electric capacity; First output of current rectifying and wave filtering circuit of boosting connects the positive pole of first electric capacity, and second output of the current rectifying and wave filtering circuit that boosts connects the negative pole of second electric capacity.
3. power supply changeover device according to claim 2, it is characterized in that, described constant current output circuit is by a constant-current driven chip, one resistance and a diode, one inductance and two electric capacity that is connected in series is formed, first stitch of constant-current driven chip links to each other with the positive pole of diode, the negative pole of this diode connects first output and an end of resistance and second stitch of constant-current driven chip of the current rectifying and wave filtering circuit that boosts simultaneously, the other end of this resistance connects the 3rd stitch of constant-current driven chip, the 4th stitch of constant-current driven chip connects second output of the current rectifying and wave filtering circuit that boosts, one end of described inductance connects the positive pole of diode, the other end of inductance is connected between two electric capacity, and two of two electric capacity connects second output of the other end of described resistance and the current rectifying and wave filtering circuit that boosts respectively; First output of constant current output circuit is connected with the other end of described resistance, and second output of constant current output circuit is connected between two electric capacity.
4. power supply changeover device according to claim 3, it is characterized in that, described change-over circuit also comprises the EMI filter circuit that links to each other with the input of the current rectifying and wave filtering circuit that boosts, described EMI filter circuit is made up of a transformer and an electric capacity, this transformer comprises two inductance, the output of first inductance and the first input end of the current rectifying and wave filtering circuit that boosts are connected an end of electric capacity jointly, and the output of second inductance and second input of the current rectifying and wave filtering circuit that boosts are connected the other end of this electric capacity jointly.
5. power supply changeover device according to claim 4, it is characterized in that, described change-over circuit also comprises a piezo-resistance, one end of described piezo-resistance is connected between the first input end of first output of the current rectifying and wave filtering circuit that boosts and constant current output circuit, and the other end of this piezo-resistance is connected between second input of second output of the current rectifying and wave filtering circuit that boosts and constant current output circuit.
6. power supply changeover device according to claim 5 is characterized in that, described change-over circuit also comprises even divider resistance, and first divider resistance is connected on the first input end of EMI filter circuit, and second divider resistance is connected on first output of constant current output circuit.
7. according to the arbitrary described power supply changeover device of claim 3-6, it is characterized in that described constant-current driven chip also comprises the 5th stitch, the 5th stitch is used to obtain pwm signal.
8. according to the arbitrary described power supply changeover device of claim 1-6, it is characterized in that, described power supply changeover device also comprises shell, described change-over circuit setting in the enclosure, described power supply changeover device also comprises input adapter and out splice going splice, described input adapter connects the input of shell, described out splice going splice is connected with the output of shell by lead, described input adapter is provided with two stitch, described out splice going splice is provided with two pin holes, two inputs of described change-over circuit connect two stitch respectively, and two outputs of described change-over circuit connect two pin holes respectively.
9. a LED lamp comprises the LED luminous element group that change-over circuit and a plurality of LED luminous element connection in series-parallel are formed, and the output of described change-over circuit connects LED luminous element group, it is characterized in that described change-over circuit is the arbitrary described change-over circuit of claim 1-4.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101054934A CN101483947A (en) | 2009-02-20 | 2009-02-20 | Power source converter for halogen tungstem lamp switching energy saving lamp |
| PCT/CN2009/075477 WO2010045891A1 (en) | 2009-02-20 | 2009-12-10 | Power supply converter for switching tungsten-halogen lamp to energy-saving lamp |
| PCT/CN2010/074184 WO2011069360A1 (en) | 2009-12-10 | 2010-06-21 | Power supply converter and led lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201898450U true CN201898450U (en) | 2011-07-13 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101054934A Pending CN101483947A (en) | 2009-02-20 | 2009-02-20 | Power source converter for halogen tungstem lamp switching energy saving lamp |
| CN2009901000266U Expired - Fee Related CN201854465U (en) | 2009-02-20 | 2009-12-10 | Power supply converter for switching halogen-tungsten lamp to energy-saving lamp |
| CN2010900005316U Expired - Fee Related CN201898450U (en) | 2009-02-20 | 2010-06-21 | Power converter and light-emitting diode (LED) lamp |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101054934A Pending CN101483947A (en) | 2009-02-20 | 2009-02-20 | Power source converter for halogen tungstem lamp switching energy saving lamp |
| CN2009901000266U Expired - Fee Related CN201854465U (en) | 2009-02-20 | 2009-12-10 | Power supply converter for switching halogen-tungsten lamp to energy-saving lamp |
Country Status (2)
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| CN (3) | CN101483947A (en) |
| WO (1) | WO2010045891A1 (en) |
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| WO2011069360A1 (en) * | 2009-12-10 | 2011-06-16 | Wong Pun | Power supply converter and led lamp |
| CN101483947A (en) * | 2009-02-20 | 2009-07-15 | 黄斌 | Power source converter for halogen tungstem lamp switching energy saving lamp |
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2009
- 2009-02-20 CN CNA2009101054934A patent/CN101483947A/en active Pending
- 2009-12-10 WO PCT/CN2009/075477 patent/WO2010045891A1/en active Application Filing
- 2009-12-10 CN CN2009901000266U patent/CN201854465U/en not_active Expired - Fee Related
-
2010
- 2010-06-21 CN CN2010900005316U patent/CN201898450U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506318A (en) * | 2011-10-25 | 2012-06-20 | 杭州鸿德照明科技有限公司 | Light-emitting diode (LED) bulb lamp with flame-retardant plastic shell |
| CN102510615A (en) * | 2011-10-25 | 2012-06-20 | 杭州鸿德照明科技有限公司 | Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) |
| CN102510615B (en) * | 2011-10-25 | 2014-04-02 | 杭州鸿德照明科技有限公司 | Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) |
| CN102711339A (en) * | 2012-06-21 | 2012-10-03 | 深圳市耀星光电子有限公司 | LED (Light Emitting Diode) drive circuit |
| CN102932998A (en) * | 2012-11-13 | 2013-02-13 | 镇江路美耐光电科技有限公司 | Power converter |
| CN108696126B (en) * | 2018-06-15 | 2024-02-09 | 黎明职业大学 | BUCK drive circuit |
| CN108924996A (en) * | 2018-06-28 | 2018-11-30 | 上思县东岽电子科技有限责任公司 | A kind of LED street lamp that voltage multiplying rectifier is with an automatic light meter |
| CN108990210A (en) * | 2018-06-28 | 2018-12-11 | 上思县东岽电子科技有限责任公司 | A kind of LED street lamp driver that voltage multiplying rectifier is with an automatic light meter |
| CN114024454A (en) * | 2021-10-15 | 2022-02-08 | 矽力杰半导体技术(杭州)有限公司 | Power converter |
| CN114024454B (en) * | 2021-10-15 | 2023-11-14 | 矽力杰半导体技术(杭州)有限公司 | power converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN201854465U (en) | 2011-06-01 |
| WO2010045891A1 (en) | 2010-04-29 |
| CN101483947A (en) | 2009-07-15 |
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| C14 | Grant of patent or utility model | ||
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