CN105491722A - LED autotransformer driver - Google Patents

LED autotransformer driver Download PDF

Info

Publication number
CN105491722A
CN105491722A CN201511022750.XA CN201511022750A CN105491722A CN 105491722 A CN105491722 A CN 105491722A CN 201511022750 A CN201511022750 A CN 201511022750A CN 105491722 A CN105491722 A CN 105491722A
Authority
CN
China
Prior art keywords
led
transformer
voltage
driver
autotransformer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201511022750.XA
Other languages
Chinese (zh)
Inventor
吴文武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201511022750.XA priority Critical patent/CN105491722A/en
Publication of CN105491722A publication Critical patent/CN105491722A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30Driver circuits
    • H05B45/37Converter circuits

Abstract

The invention provides an LED autotransformer driver. An induction transformer is combined with auto-induction voltage reduction as an inductor ballast to be provided to an LED lamp as a lighting drive power supply after being rectified and filtered.

Description

LED autotransformer driver
Technical field
LED illumination lamp driving power
Background technology
LED illumination lamp is made up of numerous light-emitting diode, is by connecting between them, and in parallel or connection in series-parallel combines.
Single pearl or single LEDs light-emitting diode it be powered by low-voltage DC, the general volt more than 2 of luminous voltage is within the scope of volt more than 3, the power supply device that the LED of serial or parallel connection needs one to be applicable to it, this power supply custom be upper title it be LED driver.
At present, the driving power scheme of LED has a lot, but the most frequently used is capacitance current-limiting Buck driver and Switching Power Supply driver, capacitance driver discharges so claim it to be capacitance-resistance driver by its to allow electric capacity resistance in parallel when idle, Switching Power Supply driver has used to obtain very general electronic switch transformer exactly at present, it is by being reverse into high frequency through electronic component again after the direct rectification of alternating current and then going the supply voltage required for high frequency transformer transformation becomes to go to power supplies such as LED, do the work of on off state so claim it to be Switching Power Supply or switch transformer with transistor in this conversion process.
In fact LED driver is exactly a kind ofly become a kind of LED that can be applicable to certain serial or parallel connection lamp pearl by user's High Level AC Voltage and normally light, the transformation of inductor also can accomplish this point, inductance coil also can be used for current limliting step-down, transformer also can become line voltage the LED use of certain power applicable, but just because simple inductor or the shortcoming such as its weight large volume of transformer is large are so current LED illumination industry seldom uses, at this, I combines inductance and transformer is that autotransformer is all over the body to do a kind of new LED illumination lamp driver.
Summary of the invention
Be used in LED illumination as a kind of driver in order to inductor element can be allowed, the invention provides a kind of LED autotransformer driver, its feature: two the interchange input pins receiving the bridge rectifier block be made up of four diodes with the centre cap output and ground of the decompression autotransformer of inductor, export from direct current and obtain the direct voltage after step-down transformer step-down through electrochemical capacitor filtering afterwards as the driving power of LED, this driving power is relatively applicable to the more lamp pearl of series connection and uses, transformer is primary and secondary is all same group of coil, step-down is carried out by the mode of self coupling, the voltage fallen is as the criterion depending on the sum voltage of a series connection small electric bulb number, driven to LED by rectifying and wave-filtering after transformer pressure-reducing, also have it also by inductance from centre cap and direct output over the ground, form current limit by inductance step-down supply LED, the efficiency utilizing inductor transformer that so just can be comprehensive by the supply power of two aspects, just constitute the minimizing of the volume and weight making transformer, can also adapt to alternating current be pressed with certain mobility scale can luminous lighting.
First, illustrate that its structure is also a kind of LED non-isolated power driving circuit, the efficiency of the transformer of inductor itself why is mainly fully utilized with autotransformer, a such as use one watt of one pearl be connected into 30 lamp pearls, total wattage is that the LED of 30 watts just can do the driving power of this LED with the inductive transformer of less than ten watts, because every LED lamp pearl has a minimum luminous voltage and a high light voltage the highest, generally minimum luminous voltage is 2.8V, and the highest high light voltage is about 3.6V, the fluctuation LED lamp bead of any voltage between this 2.8V--3.6V can normally work, if calculated with every pearl ceiling voltage, so the assembly of LED lamp bead of 30 is the direct voltage of 108V by voltage, so just can be arranged on can bear 200V alternating voltage autotransformer wire circle in the middle of to give to export in secondary coil 100V alternating voltage just passable, the coil position that can export 100V voltage picks out a centre tapped wiring come namely to hold the output AC voltage forming this lamp then to receive this LED of 30 watts as the power supply driving this lamp through rectifying and wave-filtering with common port.But when it can also be seen that the Non voltage output when secondary end, that is when the common port of autotransformer does not connect AC power, alternating current circuit also can from primary side can bear 120V coil from centre cap wiring flow through rectifier and carry out rectification then filtering go to light this LED, thus this process it only inductance ballast effect be not the effect of transformer, this is power supply process on the one hand, but be again an electric power-feeding structure after the secondary coil connection of autotransformer plays a role certainly, the electric power-feeding structure of these two aspects just constitutes a kind of comparatively ideal driving power.
Accompanying drawing explanation
Accompanying drawing is the structure chart of LED autotransformer driver
Embodiment
The autotransformer drive circuit of this inductor can only in the LED high-power lamp that series connection pearl number is more its advantage of competence exertion, but the LED of the pearl number of series connection again under full voltage drives has been best suited for, the pearl number of connecting exactly design lamp of less than 80 more than 30 is the most applicable, and series lamp pearl just can drive by direct full voltage more than 80.
Because the driving of autotransformer has the drive circuit of two aspects to combine, so the power of the inductor transformer selected can about the half of lamp power just, come again be exactly understand grasp this transformer unloaded capacity in how many turn coil just can bear one volt of voltage, that is the electric main pressure of 220V needs around how many turn coil just can afford, be aware of the voltage number of turns than afterwards, remaining is exactly see the series connection pearl number of lamp pearl, after devising the series connection pearl number of lamp pearl, after the minimum luminous voltage measuring single lamp pearl again and the most high-strength photovoltage, then go to design the number of turns required for secondary coil of autotransformer finally to connect rectifier rectification and go out the direct voltage electrochemical capacitor of parallel filtering on series lamp pearl again, the direct current that rectifier rectification goes out is distinguished and has positive and negatively been connect LED just.

Claims (1)

1. in order to inductor element can be allowed to be used in LED illumination as a kind of driver, the invention provides a kind of LED autotransformer driver, its feature: two the interchange input pins receiving the bridge rectifier block be made up of four diodes with the centre cap output and ground of the decompression autotransformer of inductor, export from direct current and obtain the direct voltage after step-down transformer step-down through electrochemical capacitor filtering afterwards as the driving power of LED, this driving power is relatively applicable to the more lamp pearl of series connection and uses, transformer is primary and secondary is all same group of coil, step-down is carried out by the mode of self coupling, the voltage fallen is as the criterion depending on the sum voltage of a series connection small electric bulb number, driven to LED by rectifying and wave-filtering after transformer pressure-reducing, also have it also by inductance from centre cap and direct output over the ground, form current limit by inductance step-down supply LED, the efficiency utilizing inductor transformer that so just can be comprehensive by the supply power of two aspects, just constitute the minimizing of the volume and weight making transformer, can also adapt to alternating current be pressed with certain mobility scale can luminous lighting.
CN201511022750.XA 2015-12-31 2015-12-31 LED autotransformer driver Pending CN105491722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511022750.XA CN105491722A (en) 2015-12-31 2015-12-31 LED autotransformer driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511022750.XA CN105491722A (en) 2015-12-31 2015-12-31 LED autotransformer driver

Publications (1)

Publication Number Publication Date
CN105491722A true CN105491722A (en) 2016-04-13

Family

ID=55678330

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511022750.XA Pending CN105491722A (en) 2015-12-31 2015-12-31 LED autotransformer driver

Country Status (1)

Country Link
CN (1) CN105491722A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906859A (en) * 1987-11-30 1990-03-06 Nec Corporation Power supply circuit with symmetrically tapped auto-transformer
CN201118448Y (en) * 2007-11-22 2008-09-17 高效电子股份有限公司 Self-coupling transformer voltage increase/decrease circuit
CN102468774A (en) * 2010-11-17 2012-05-23 日本捲线工业株式会社 Power supply circuit
CN102932998A (en) * 2012-11-13 2013-02-13 镇江路美耐光电科技有限公司 Power converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906859A (en) * 1987-11-30 1990-03-06 Nec Corporation Power supply circuit with symmetrically tapped auto-transformer
CN201118448Y (en) * 2007-11-22 2008-09-17 高效电子股份有限公司 Self-coupling transformer voltage increase/decrease circuit
CN102468774A (en) * 2010-11-17 2012-05-23 日本捲线工业株式会社 Power supply circuit
CN102932998A (en) * 2012-11-13 2013-02-13 镇江路美耐光电科技有限公司 Power converter

Similar Documents

Publication Publication Date Title
TWI489903B (en) Light emitting diode lighting device and its current control method
CN104868703B (en) High-voltage converter without assists winding
CN101207954B (en) Mr16 type high power led lamp
JP2014524141A5 (en)
WO2010054523A1 (en) Combination of a drive power supply of high-power led lamp and matched lamps
CN102223748A (en) Drive method and drive power source of light-emitting diode (LED) lamp with alternating current power supply
CN202738205U (en) LED dimming drive circuit
WO2014079134A1 (en) Led constant current power supply circuit
US20070063657A1 (en) Light string and method of assembling thereof
CN201131072Y (en) MR16 type high-capacity LED lamp
CN107306465A (en) Led drive circuit
CN105491722A (en) LED autotransformer driver
KR20110084606A (en) Led lighting circuit with stabilizer for fluorescent lamp of boost-up type
CN207884931U (en) LED illumination system with dimming function
CN104780695B (en) A kind of LED non-pole light regulatings constant-current driving power supply
CN100514823C (en) Adjustable high brightness light emitting diode LED lighting driving circuit
CN204518140U (en) A kind of isolated constant current driver circuit for LED
CN109996366A (en) LED illumination system with dimming function
CN104219828A (en) Light-emitting diode illuminating system
CN202634748U (en) Quasi parallel resonance light emitting diode (LED) lamp circuit
CN204652709U (en) The linear LED drive power of dividing potential drop rectification falls in non-polar condenser
CN203708584U (en) Bidirectional driving LED circuit
CN206775789U (en) The driving power and illuminator of a kind of lighting apparatus
TWI667941B (en) High-efficiency color LED lamp shared drive
EP2645820A1 (en) Lighting control circuit and illumination control device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20160413