CN203167379U - An isolated driving power supply of a LED fluorescent lamp - Google Patents
An isolated driving power supply of a LED fluorescent lamp Download PDFInfo
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- CN203167379U CN203167379U CN2013201659125U CN201320165912U CN203167379U CN 203167379 U CN203167379 U CN 203167379U CN 2013201659125 U CN2013201659125 U CN 2013201659125U CN 201320165912 U CN201320165912 U CN 201320165912U CN 203167379 U CN203167379 U CN 203167379U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses an isolated driving power supply of a LED fluorescent lamp. The isolated driving power supply comprises an AC input end, an input filtering module, a rectification module, a omega-type filter, a RCD absorption circuit, a flyback transformation module, an output filtering module, and a DC output end which are connected successively. The driving power supply comprises a PFC control module. The current sampling end of the PFC control module is connected with the primary winding of a transformer T1 in the flyback transformation module. The pulse signal output end of the PFC control module is connected with the control end of the flyback transformation module. A PFC chip U1 in the PFC control module is an integrated chip SY5800. The transformer T1 is a transformer EDR2809. The driving power supply samples the current on the primary side of the transformer T1. Compared with a product in the prior art, the driving power supply has simpler circuit structure and reduces the height of the housing of the driving power supply. Therefore, the driving power supply not only saves space, but also is easy to install.
Description
Technical field
The utility model relates to the fluorescent lamp driving power supply technical field, relates in particular to a kind of isolated LED fluorescent lamp driving power supply.
Background technology
Although the LED fluorescent lamp is than common daylight lamp energy-saving and luminous efficiency height, but it can not be as the direct use utility grid voltage of common fluorescent lamp, so must be furnished with the specialized voltages conversion equipment, provide can driving LED rated voltage and electric current, just can make the LED operate as normal, this voltage conversion apparatus is exactly so-called LED fluorescent lamp driving power supply.There are non-isolated and isolated two kinds in existing driving power, wherein, isolated LED fluorescent lamp driving power supply mainly is to use PFC chip and inverse-excitation converting module to carry out anti-commendable increase and presses processing, and the isolation feedback loop that utilizes optocoupler and TL431 to constitute is sampled to the secondary current of transformer, the circuit structure complexity of this driving power, element is more, so have higher cost.Simultaneously, in the existing LED fluorescent lamp driving power supply, because the volume of transformer is bigger, make outer cover height too high, not only take up room but also be not easy to and install.Therefore, the defective that there is the circuit structure complexity in existing isolated LED fluorescent lamp driving power supply, cost is high and be not easy to install.
The utility model content
The technical problems to be solved in the utility model is, a kind of isolated LED fluorescent lamp driving power supply is provided, this driving power has adopted the mode of transformer primary current sampling, need not the isolation feedback loop that optocoupler and TL431 constitute, make circuit simpler, simultaneously, transformer is ultra-thin transformer, so reduced the outer cover height of driving power, not only saved the space but also be convenient to and install.
For solving the problems of the technologies described above, the utility model adopts following technical scheme.
A kind of isolated LED fluorescent lamp driving power supply, it includes an AC input that connects successively, one input filtration module, one rectification module, one pi type filter, one RCD absorbs circuit, one inverse-excitation converting module, one output filtration module and a DC output, described driving power also includes a PFC control module, the current sample end of described PFC control module links to each other with the elementary winding of transformer T1 in the inverse-excitation converting module, its pulse signal output end links to each other with the control end of inverse-excitation converting module, PFC chip U1 in the described PFC control module is the SY5800 integrated chip, and described transformer T1 is the EDR2809 transformer.
Preferably, described input filtration module is electromagnetic interface filter, it includes a common mode inductance L 1, be connected with resistance R 1 and the resistance R 2 of potentiometer RV1, capacitor C X1 and series connection successively between two inputs of described common mode inductance L1, two outputs of described common mode inductance L1 are connected to the input of rectification module.
Preferably, described rectification module is bridge rectifier BD1.
Preferably, described pi type filter includes inductance L parallel with one another 2 and resistance R 3, the two ends of described inductance L 2 connect front end power supply ground by capacitor C 1A and capacitor C 1 respectively, one end of this inductance L 2 is as the input of pi type filter and be connected to the output of rectification module, and its other end is as the output of pi type filter and be connected to first end of the elementary winding of transformer T1.
Preferably, described RCD absorbs circuit and includes resistance R parallel with one another 6, resistance R 7, resistance R 8 and capacitor C 2, end after four parallel connections links to each other with first end of the elementary winding of transformer T1, the other end after four parallel connections is connected to the negative electrode of diode D1 by resistance R 9, and the anode of diode D1 is connected in second end of the elementary winding of transformer T1.
Preferably, described inverse-excitation converting module includes a metal-oxide-semiconductor Q1, the drain electrode of described metal-oxide-semiconductor Q1 is connected in second end of the elementary winding of transformer T1, its source electrode connects front end power supply ground by resistance R 19, its grid is the control end of inverse-excitation converting module, the first termination back-end power supply ground of first secondary winding of described transformer T1, its second end is connected in the anode of diode D4, the negative electrode of diode D4 connects the positive pole of electrochemical capacitor EC2, the minus earth of electrochemical capacitor EC2, the output of the just very inverse-excitation converting module of described electrochemical capacitor EC2.
Preferably, described output filtration module is electromagnetic interface filter, and it includes a common mode inductance L 3, is connected with resistance R 25 between two inputs of described common mode inductance L3, described resistance R 25 is parallel to electrochemical capacitor EC2, and two outputs of common mode inductance L3 are respectively positive pole and the negative pole of DC output.
Preferably; described PFC control module includes diode D2 and voltage-stabiliser tube ZD1; the anode of described diode D2 is connected in first end of the second subprime winding of transformer T1 by resistance R 10; the second termination front end power supply ground of the second subprime winding of transformer T1; the negative electrode of described diode D2 links to each other with the negative electrode of voltage-stabiliser tube ZD1; the tie point of the two also is connected to the power end VIN of PFC chip U1; the plus earth of voltage-stabiliser tube ZD1; the negative electrode of voltage-stabiliser tube ZD1 is resistance R 5 and resistance R 4 output that is connected to pi type filter by series connection successively also; be connected with resistance R 16 between the power end VIN of PFC chip U1 and the Enable Pin EN; its earth terminal TM and earth terminal GND all are connected in front end power supply ground; its current compensation end COMP is by capacitor C parallel with one another 4 and capacitor C 5 ground connection; its zero passage protection end ZCS is by resistance R parallel with one another 21 and resistance R 22 ground connection; this zero passage protection end ZCS also is connected to first end of the second subprime winding of transformer T1 by resistance R 13; the pulse output end DRV of PFC chip U1 is connected to the grid of metal-oxide-semiconductor Q1 by resistance R 11; this pulse output end DRV also is connected in the negative electrode of diode D3 by resistance R 12; the anode of diode D3 is connected in the grid of metal-oxide-semiconductor Q1; the grid of metal-oxide-semiconductor Q1 also connects the negative electrode of voltage-stabiliser tube ZD2; the anode of voltage-stabiliser tube ZD2 is connected to the source electrode of metal-oxide-semiconductor Q1; voltage-stabiliser tube ZD2 is parallel with resistance R 14; the current sample end ISEN of PFC chip U1 is connected to the source electrode of metal-oxide-semiconductor Q1 by resistance R 15; the source electrode of this metal-oxide-semiconductor Q1 also connects the anode of diode D5, the minus earth of diode D5.
Preferably, described AC input includes a fuse F1, and described fuse F1 is series at one of two inputs of input filtration module.
Preferably, the anode of described diode D4 also is connected to an end of capacitor C 6 by resistance R parallel with one another 23 and resistance R 24, and the other end of capacitor C 6 is connected to the negative electrode of diode D4.
In the disclosed driving power of the utility model, line voltage transfers to the input filtration module through the AC input, high-frequency interferencing signal with the filtering line voltage, through rectification module line voltage is carried out rectification afterwards, pulsating dc voltage after the rectification is crosstalked by pi type filter filtering ripple, the voltage of pi type filter output absorbs the elementary winding that circuit transfers to transformer T1 in the inverse-excitation converting module by RCD, described PFC control module is adjusted the duty ratio of pulse-modulated signal according to sample rate current, and pulse-modulated signal is exported to the control end of inverse-excitation converting module, thereby drive the inverse-excitation converting module and realize anti-commendable increase pressure, voltage signal after boosting is through after the output filtration module filtering ripple, export the LED fluorescent lamp to via the DC output, make that the LED fluorescent lamp obtains continuing and stable voltage.In the utility model, because the elementary winding of the transformer T1 in the current sample end of PFC control module and the inverse-excitation converting module links to each other, thereby realized the primary current of transformer T1 is sampled, compare the existing sample mode that constitutes the isolation feedback loop with optocoupler and TL431, circuit structure of the present utility model is simpler, simultaneously, because transformer is that model is the ultra-thin transformer of EDR2809, so reduced the outer cover height of driving power, made the utility model not only save the space but also be convenient to and install.
Description of drawings
Fig. 1 is the circuit block diagram of the isolated LED fluorescent lamp driving power supply that the utility model proposes.
Fig. 2 is the circuit theory diagrams of the isolated LED fluorescent lamp driving power supply that the utility model proposes.
Embodiment
Below in conjunction with drawings and Examples the utility model is done more detailed description.
The utility model discloses a kind of isolated LED fluorescent lamp driving power supply, in conjunction with Figure 1 and Figure 2, it includes an AC input 1 that connects successively, one input filtration module 2, one rectification module 3, one pi type filter 4, one RCD absorbs circuit 5, one inverse-excitation converting module 6, one output filtration module 7 and a DC output 8, described driving power also includes a PFC control module 9, the current sample end of described PFC control module 9 links to each other with the elementary winding of transformer T1 in the inverse-excitation converting module 6, its pulse signal output end links to each other with the control end of inverse-excitation converting module 6, PFC chip U1 in the described PFC control module 9 is the SY5800 integrated chip, and described transformer T1 is the EDR2809 transformer.
In the above-mentioned driving power, line voltage transfers to input filtration module 2 through the AC input, high-frequency interferencing signal with the filtering line voltage, carry out rectification through 3 pairs of line voltages of rectification module afterwards, pulsating dc voltage after the rectification is crosstalked by pi type filter 4 filtering ripples, this pi type filter 4 has lower input and output impedance, effective filtering ripple, also have the lower characteristics of power consumption, the voltage of pi type filter 4 outputs absorbs the elementary winding that circuit 5 transfers to transformer T1 in the inverse-excitation converting module 6 by RCD, this RCD absorbs the leakage inductance voltage that circuit 5 is used for sponging the elementary winding of transformer T1, thereby avoid this leakage inductance voltage to the impact of other elements, described PFC control module 6 is adjusted the duty ratio of pulse-modulated signal according to sample rate current, and pulse-modulated signal is exported to the control end of inverse-excitation converting module 6, thereby drive inverse-excitation converting module 6 and realize anti-commendable increase pressure, voltage signal after boosting is through after the output filtration module 7 filtering ripples, export the LED fluorescent lamp to via DC output 8, make that the LED fluorescent lamp obtains continuing and stable voltage.In the utility model, because the elementary winding of the transformer T1 in the current sample end of PFC control module 9 and the inverse-excitation converting module 6 links to each other, thereby realized the primary current of transformer T1 is sampled, compare the existing sample mode that constitutes the isolation feedback loop with optocoupler and TL431, circuit structure of the present utility model is simpler, simultaneously, because transformer is that model is the ultra-thin transformer of EDR2809, so reduced the outer cover height of driving power, made the utility model not only save the space but also be convenient to and install.
In the present embodiment, described input filtration module 2 is electromagnetic interface filter, it includes a common mode inductance L 1, be connected with resistance R 1 and the resistance R 2 of potentiometer RV1, capacitor C X1 and series connection successively between two inputs of described common mode inductance L1, two outputs of described common mode inductance L1 are connected to the input of rectification module 3.The low-pass filter circuit that this electromagnetic interface filter is made up of reactor and capacitor, its effect are to hinder the external high frequency interference signal to enter driving power.
Described rectification module 3 is bridge rectifier BD1, described pi type filter 4 includes inductance L parallel with one another 2 and resistance R 3, the two ends of described inductance L 2 connect front end power supply ground by capacitor C 1A and capacitor C 1 respectively, one end of this inductance L 2 is as the input of pi type filter 4 and be connected to the output of rectification module 3, and its other end is as the output of pi type filter 4 and be connected to first end of the elementary winding of transformer T1.Wherein, pi type filter 4 exports RCD absorption circuit 5 to after being converted to more level and smooth direct voltage for the pulsating dc voltage with its input.
Described RCD absorbs circuit 5 and includes resistance R parallel with one another 6, resistance R 7, resistance R 8 and capacitor C 2, end after four parallel connections links to each other with first end of the elementary winding of transformer T1, the other end after four parallel connections is connected to the negative electrode of diode D1 by resistance R 9, and the anode of diode D1 is connected in second end of the elementary winding of transformer T1.Described inverse-excitation converting module 6 includes a metal-oxide-semiconductor Q1, the drain electrode of described metal-oxide-semiconductor Q1 is connected in second end of the elementary winding of transformer T1, its source electrode connects front end power supply ground by resistance R 19, its grid is the control end of inverse-excitation converting module 6, the first termination back-end power supply ground of first secondary winding of described transformer T1, its second end is connected in the anode of diode D4, the negative electrode of diode D4 connects the positive pole of electrochemical capacitor EC2, the minus earth of electrochemical capacitor EC2, the output of the just very inverse-excitation converting module 6 of described electrochemical capacitor EC2.In the practical application, when metal-oxide-semiconductor Q1 turn-offs, the energy of the elementary winding of transformer T1 can not be delivered to secondary, if do not take measures, leakage inductance will release energy by parasitic capacitance, cause circuit overshoot and vibration, influence the circuit working performance, can burn device when serious, in the present embodiment, absorb the leakage inductance voltage that circuit 5 sponges elementary winding by this RCD, thereby improve the reliability of driving power.
Described output filtration module 7 is electromagnetic interface filter, it includes a common mode inductance L 3, be connected with resistance R 25 between two inputs of described common mode inductance L3, described resistance R 25 is parallel to electrochemical capacitor EC2, and two outputs of common mode inductance L3 are respectively positive pole and the negative pole of DC output 8.Because this output filtration module 7 is low pass filter, thereby the High-frequency Interference effectively in the filtering circuit.
Described PFC control module 9 includes diode D2 and voltage-stabiliser tube ZD1; the anode of described diode D2 is connected in first end of the second subprime winding of transformer T1 by resistance R 10; the second termination front end power supply ground of the second subprime winding of transformer T1; the negative electrode of described diode D2 links to each other with the negative electrode of voltage-stabiliser tube ZD1; the tie point of the two also is connected to the power end VIN of PFC chip U1; the plus earth of voltage-stabiliser tube ZD1; the negative electrode of voltage-stabiliser tube ZD1 is resistance R 5 and resistance R 4 output that is connected to pi type filter 4 by series connection successively also; be connected with resistance R 16 between the power end VIN of PFC chip U1 and the Enable Pin EN; its earth terminal TM and earth terminal GND all are connected in front end power supply ground; its current compensation end COMP is by capacitor C parallel with one another 4 and capacitor C 5 ground connection; its zero passage protection end ZCS is by resistance R parallel with one another 21 and resistance R 22 ground connection; this zero passage protection end ZCS also is connected to first end of the second subprime winding of transformer T1 by resistance R 13; the pulse output end DRV of PFC chip U1 is connected to the grid of metal-oxide-semiconductor Q1 by resistance R 11; this pulse output end DRV also is connected in the negative electrode of diode D3 by resistance R 12; the anode of diode D3 is connected in the grid of metal-oxide-semiconductor Q1; the grid of metal-oxide-semiconductor Q1 also connects the negative electrode of voltage-stabiliser tube ZD2; the anode of voltage-stabiliser tube ZD2 is connected to the source electrode of metal-oxide-semiconductor Q1; voltage-stabiliser tube ZD2 is parallel with resistance R 14; the current sample end ISEN of PFC chip U1 is connected to the source electrode of metal-oxide-semiconductor Q1 by resistance R 15; the source electrode of this metal-oxide-semiconductor Q1 also connects the anode of diode D5, the minus earth of diode D5.Wherein, because PFC chip U1 is the SY5800 integrated chip, thereby realized the control of single-stage PFC inverse-excitation type, and had higher operating efficiency.
Described AC input 1 includes a fuse F1, and described fuse F1 is series at one of two inputs of input filtration module 2.The anode of described diode D4 also is connected to an end of capacitor C 6 by resistance R parallel with one another 23 and resistance R 24, the other end of capacitor C 6 is connected to the negative electrode of diode D4.This resistance R 23, resistance R 24 and capacitor C 6 are used for suppressing surge voltage to the impact of diode D4, avoid diode D4 to damage because of withstand voltage deficiency.
In the disclosed isolated LED fluorescent lamp driving power supply of the utility model, because the current sample end ISEN of PFC chip U1 is connected to the elementary winding of transformer T1 by resistance R 15 and metal-oxide-semiconductor Q1, thereby realized the primary current of transformer T1 is sampled, compare existing sample mode with optocoupler and TL431 formation isolation feedback loop, circuit structure of the present utility model is simpler.Simultaneously, because transformer is that model is the ultra-thin transformer of EDR2809, so reduced the outer cover height of driving power, makes the utility model not only save the space but also be convenient to and install.In addition, adopt the working method that this driving power has also adopted quasi-resonance, can reach very little power loss, make the conversion efficiency of driving power reach 91%.In conjunction with above some as can be seen, the utility model has application promise in clinical practice in LED fluorescent lamp driving power supply technical field, and is adapted at using in the multiple environment such as family, office space.
The above is the utility model preferred embodiment, is not limited to the utility model, all modifications of making in technical scope of the present utility model, is equal to and replaces or improvement etc., all should be included in the scope that the utility model protects.
Claims (10)
1. isolated LED fluorescent lamp driving power supply, it is characterized in that, described driving power includes an AC input (1) that connects successively, one input filtration module (2), one rectification module (3), one pi type filter (4), one RCD absorbs circuit (5), one inverse-excitation converting module (6), one output filtration module (7) and a DC output (8), described driving power also includes a PFC control module (9), the current sample end of described PFC control module (9) links to each other with the elementary winding of transformer T1 in the inverse-excitation converting module (6), its pulse signal output end links to each other with the control end of inverse-excitation converting module (6), PFC chip U1 in the described PFC control module (9) is the SY5800 integrated chip, and described transformer T1 is the EDR2809 transformer.
2. isolated LED fluorescent lamp driving power supply as claimed in claim 1, it is characterized in that, described input filtration module (2) is electromagnetic interface filter, it includes a common mode inductance L 1, be connected with resistance R 1 and the resistance R 2 of potentiometer RV1, capacitor C X1 and series connection successively between two inputs of described common mode inductance L1, two outputs of described common mode inductance L1 are connected to the input of rectification module (3).
3. isolated LED fluorescent lamp driving power supply as claimed in claim 1 is characterized in that, described rectification module (3) is bridge rectifier BD1.
4. isolated LED fluorescent lamp driving power supply as claimed in claim 1, it is characterized in that, described pi type filter (4) includes inductance L parallel with one another 2 and resistance R 3, the two ends of described inductance L 2 connect front end power supply ground by capacitor C 1A and capacitor C 1 respectively, one end of this inductance L 2 is as the input of pi type filter (4) and be connected to the output of rectification module (3), and its other end is as the output of pi type filter (4) and be connected to first end of the elementary winding of transformer T1.
5. isolated LED fluorescent lamp driving power supply as claimed in claim 1, it is characterized in that, described RCD absorbs circuit (5) and includes resistance R parallel with one another 6, resistance R 7, resistance R 8 and capacitor C 2, end after four parallel connections links to each other with first end of the elementary winding of transformer T1, the other end after four parallel connections is connected to the negative electrode of diode D1 by resistance R 9, and the anode of diode D1 is connected in second end of the elementary winding of transformer T1.
6. isolated LED fluorescent lamp driving power supply as claimed in claim 1, it is characterized in that, described inverse-excitation converting module (6) includes a metal-oxide-semiconductor Q1, the drain electrode of described metal-oxide-semiconductor Q1 is connected in second end of the elementary winding of transformer T1, its source electrode connects front end power supply ground by resistance R 19, its grid is the control end of inverse-excitation converting module (6), the first termination back-end power supply ground of first secondary winding of described transformer T1, its second end is connected in the anode of diode D4, the negative electrode of diode D4 connects the positive pole of electrochemical capacitor EC2, the minus earth of electrochemical capacitor EC2, the output of the just very inverse-excitation converting module (6) of described electrochemical capacitor EC2.
7. isolated LED fluorescent lamp driving power supply as claimed in claim 6, it is characterized in that, described output filtration module (7) is electromagnetic interface filter, it includes a common mode inductance L 3, be connected with resistance R 25 between two inputs of described common mode inductance L3, described resistance R 25 is parallel to electrochemical capacitor EC2, and two outputs of common mode inductance L3 are respectively positive pole and the negative pole of DC output (8).
8. isolated LED fluorescent lamp driving power supply as claimed in claim 6; it is characterized in that; described PFC control module (9) includes diode D2 and voltage-stabiliser tube ZD1; the anode of described diode D2 is connected in first end of the second subprime winding of transformer T1 by resistance R 10; the second termination front end power supply ground of the second subprime winding of transformer T1; the negative electrode of described diode D2 links to each other with the negative electrode of voltage-stabiliser tube ZD1; the tie point of the two also is connected to the power end VIN of PFC chip U1; the plus earth of voltage-stabiliser tube ZD1; the negative electrode of voltage-stabiliser tube ZD1 is resistance R 5 and resistance R 4 output that is connected to pi type filter (4) by series connection successively also; be connected with resistance R 16 between the power end VIN of PFC chip U1 and the Enable Pin EN; its earth terminal TM and earth terminal GND all are connected in front end power supply ground; its current compensation end COMP is by capacitor C parallel with one another 4 and capacitor C 5 ground connection; its zero passage protection end ZCS is by resistance R parallel with one another 21 and resistance R 22 ground connection; this zero passage protection end ZCS also is connected to first end of the second subprime winding of transformer T1 by resistance R 13; the pulse output end DRV of PFC chip U1 is connected to the grid of metal-oxide-semiconductor Q1 by resistance R 11; this pulse output end DRV also is connected in the negative electrode of diode D3 by resistance R 12; the anode of diode D3 is connected in the grid of metal-oxide-semiconductor Q1; the grid of metal-oxide-semiconductor Q1 also connects the negative electrode of voltage-stabiliser tube ZD2; the anode of voltage-stabiliser tube ZD2 is connected to the source electrode of metal-oxide-semiconductor Q1; voltage-stabiliser tube ZD2 is parallel with resistance R 14; the current sample end ISEN of PFC chip U1 is connected to the source electrode of metal-oxide-semiconductor Q1 by resistance R 15; the source electrode of this metal-oxide-semiconductor Q1 also connects the anode of diode D5, the minus earth of diode D5.
9. isolated LED fluorescent lamp driving power supply as claimed in claim 1 is characterized in that, described AC input (1) includes a fuse F1, and described fuse F1 is series at one of two inputs of input filtration module (2).
10. isolated LED fluorescent lamp driving power supply as claimed in claim 6, it is characterized in that, the anode of described diode D4 also is connected to an end of capacitor C 6 by resistance R parallel with one another 23 and resistance R 24, the other end of capacitor C 6 is connected to the negative electrode of diode D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201659125U CN203167379U (en) | 2013-04-03 | 2013-04-03 | An isolated driving power supply of a LED fluorescent lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201659125U CN203167379U (en) | 2013-04-03 | 2013-04-03 | An isolated driving power supply of a LED fluorescent lamp |
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| CN203167379U true CN203167379U (en) | 2013-08-28 |
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| CN2013201659125U Expired - Fee Related CN203167379U (en) | 2013-04-03 | 2013-04-03 | An isolated driving power supply of a LED fluorescent lamp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103476179A (en) * | 2013-09-12 | 2013-12-25 | 广东科谷电源有限公司 | Integrated multifunctional LED power source with functions of dimming and color temperature adjusting in remote-control mode |
| CN112187036A (en) * | 2020-09-28 | 2021-01-05 | 深圳市暗能量电源有限公司 | Voltage-stabilizing output power supply circuit for sound equipment |
| CN112271939A (en) * | 2020-11-06 | 2021-01-26 | 深圳市道和实业有限公司 | Flyback switching power supply circuit for driving LED fluorescent lamp |
| CN114400620A (en) * | 2022-01-04 | 2022-04-26 | 青岛鼎信通讯股份有限公司 | Flyback framework input under-overvoltage protection circuit applied to power industry |
| CN114501727A (en) * | 2022-04-06 | 2022-05-13 | 广东东菱电源科技有限公司 | BUCK inductance series connection detection control circuit |
| WO2022217493A1 (en) * | 2021-04-14 | 2022-10-20 | 金钊 | Control circuit of led lamp source and stone lamp |
-
2013
- 2013-04-03 CN CN2013201659125U patent/CN203167379U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103476179A (en) * | 2013-09-12 | 2013-12-25 | 广东科谷电源有限公司 | Integrated multifunctional LED power source with functions of dimming and color temperature adjusting in remote-control mode |
| CN112187036A (en) * | 2020-09-28 | 2021-01-05 | 深圳市暗能量电源有限公司 | Voltage-stabilizing output power supply circuit for sound equipment |
| CN112271939A (en) * | 2020-11-06 | 2021-01-26 | 深圳市道和实业有限公司 | Flyback switching power supply circuit for driving LED fluorescent lamp |
| WO2022217493A1 (en) * | 2021-04-14 | 2022-10-20 | 金钊 | Control circuit of led lamp source and stone lamp |
| CN114400620A (en) * | 2022-01-04 | 2022-04-26 | 青岛鼎信通讯股份有限公司 | Flyback framework input under-overvoltage protection circuit applied to power industry |
| CN114400620B (en) * | 2022-01-04 | 2023-08-08 | 青岛鼎信通讯股份有限公司 | Flyback architecture input underovervoltage protection circuit applied to power industry |
| CN114501727A (en) * | 2022-04-06 | 2022-05-13 | 广东东菱电源科技有限公司 | BUCK inductance series connection detection control circuit |
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