CN108135056A - A kind of electrically driven (operated) LEDbulb lamp of alternating current-direct current - Google Patents
A kind of electrically driven (operated) LEDbulb lamp of alternating current-direct current Download PDFInfo
- Publication number
- CN108135056A CN108135056A CN201810051649.4A CN201810051649A CN108135056A CN 108135056 A CN108135056 A CN 108135056A CN 201810051649 A CN201810051649 A CN 201810051649A CN 108135056 A CN108135056 A CN 108135056A
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- China
- Prior art keywords
- circuit
- ledbulb lamp
- direct current
- current
- operated
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- 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.)
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of LEDbulb lamp of alternating current-direct current driving, breaks LEDbulb lamp driving power orthodox practice, discloses a kind of LEDbulb lamp, driving power type is regardless of direct current or AC power, LEDbulb lamp can be driven to work normally, and the voltage of driving power is very wide, can be 12~220V.
Description
Technical field
The present invention relates to a kind of electrically driven (operated) LEDbulb lamps of alternating current-direct current.
Background technology
LEDbulb lamp currently on the market is got in power drives type it is clear that exchanging electrically driven (operated) LED ball bubble
Lamp is only used for alternating current to drive, it is impossible to be driven with direct current；Equally, the LEDbulb lamp of DC powered, also can only
It is driven with direct current, the two cannot share.
Invention content
The present invention breaks LEDbulb lamp driving power orthodox practice, discloses a kind of LEDbulb lamp, driving power type is not
Point direct current or AC power, can drive LEDbulb lamp to work normally, and the voltage of driving power is very wide, can be 12~
220V。
A kind of electrically driven (operated) LEDbulb lamp of alternating current-direct current, circuit composition by rectifier circuit, circuit of power factor correction,
PWM modulation circuit, LED lighting board driving circuit and luminescent screen circuit composition.
Description of the drawings
Fig. 1 is a kind of circuit diagram of the electrically driven (operated) LEDbulb lamp of alternating current-direct current.
Specific embodiment
As shown in Figure 1, B is single phase bridge type rectifier circu, alternating current can be become the direct current of pulsation.C1、C2、C3、D1、
D2, D3 and R1 form circuit of power factor correction.The Rectified alternating current exported by rectifier, voltage is continuous, and electric current is discontinuous,
Harmonic distortion is very big, and power factor is very low, affects the utilization rate of electric energy.After introducing circuit of power factor correction, correction is utilized
Power factor can be increased to more than 0.90 by the function of circuit.Specific implementation is that circuit of power factor correction is balancing half-bridge
Another arm of one arm of compensation circuit, C1 and D1 composition half-bridges, C2 and D3 composition half-bridges, D2 and R1 composition charging connections,
And R1 has surge buffering and current-limiting function, is compensated using Fill valley principle.Filter capacitor C1 and C2 are in series, on capacitance
Voltage highest be charged to the half (V of input voltageAC/ 2), once line drop is to VAC/ 2 hereinafter, diode D1 and D3 will be by
Forward bias, in this way, C1 and C2 is made to start parallel discharge.After this circuit, the power factor of system can reach 090 with
On.
As shown in Figure 1, IC and peripheral circuit composition pulse-width modulation circuit (abbreviation PWM), IC is model CXL9910 cores
Piece, the current sample input circuit of the external resistance R4 composition LED arrays of 2 feet, selects suitable resistance value, can meet institute
The operating current of the LED array needed, the external field-effect tube T of 4 feet control the operating current of LED array in a manner of PWM modulation.
Field-effect tube T is connected to D4, L, filter capacitor C5 and LED array, and wherein L is energy storage inductor, and D4 is fast recovery diode,
The two forms freewheeling circuit, i.e., when IC exports low level, field-effect tube T cut-offs, LED array will lack driving current, at this point,
LED array operating current is supplied to by freewheeling circuit, maintains the continuity of LED array operating current.
CXL9910 is a kind of LED driving IC of efficient PWM modulation, it effectively drives in the range of 8~450VDC of input voltage
Dynamic highlighted LED.When driving power is alternating current, alternating current becomes the direct current of pulsation after bridge rectifier, then
By power factor correction circuit, the direct current of output about 310V is conveyed to CXL9910, driving LEDbulb lamp work；Work as driving power
During for direct current, lead to direct current resistance exchange principle using inductance, DC power supply can effectively be transported to CXL9910, so as to drive LED ball
Steep lamp work.
As shown in Figure 1, field-effect tube T is LED drive circuit, under the driving of IC output duty cycles voltage signal, control
The operating current of LED array.
As shown in Figure 1, LED is the LED array of high brightness, series wiring mode all the way is selected, makes the work of LEDbulb lamp
Electric current becomes smaller, and so as to reduce the operating temperature of LED array, makes LEDbulb lamp durable.
As shown in Figure 1, V is varistor, such as lightning stroke transient overvoltage protective effect is played in circuit；E is subzero temperature
The thermistor of coefficient is spent, plays the role of Antisurge current in circuit.
Claims (1)
1. a kind of electrically driven (operated) LEDbulb lamp of alternating current-direct current, circuit is formed by rectifier circuit, circuit of power factor correction, PWM
Modulation circuit, LED lighting board driving circuit and luminescent screen circuit composition；It is characterized in that：A kind of LEDbulb lamp, driving electricity are disclosed
Source category can drive LEDbulb lamp to work normally, and the voltage of driving power is very wide regardless of direct current or AC power, can
Think 12~220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051649.4A CN108135056A (en) | 2018-01-18 | 2018-01-18 | A kind of electrically driven (operated) LEDbulb lamp of alternating current-direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051649.4A CN108135056A (en) | 2018-01-18 | 2018-01-18 | A kind of electrically driven (operated) LEDbulb lamp of alternating current-direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108135056A true CN108135056A (en) | 2018-06-08 |
Family
ID=62399924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810051649.4A Withdrawn CN108135056A (en) | 2018-01-18 | 2018-01-18 | A kind of electrically driven (operated) LEDbulb lamp of alternating current-direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108135056A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925232B (en) * | 2010-08-12 | 2013-04-03 | 无锡科尔华电子有限公司 | LED street lamp constant current control power supply |
-
2018
- 2018-01-18 CN CN201810051649.4A patent/CN108135056A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925232B (en) * | 2010-08-12 | 2013-04-03 | 无锡科尔华电子有限公司 | LED street lamp constant current control power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180608 |