CN206865366U - A kind of inexpensive LED lamp power circuit - Google Patents
A kind of inexpensive LED lamp power circuit Download PDFInfo
- Publication number
- CN206865366U CN206865366U CN201720275917.1U CN201720275917U CN206865366U CN 206865366 U CN206865366 U CN 206865366U CN 201720275917 U CN201720275917 U CN 201720275917U CN 206865366 U CN206865366 U CN 206865366U
- Authority
- CN
- China
- Prior art keywords
- rectifier bridge
- filter
- filter capacitor
- resistance
- led lamp
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model is a kind of inexpensive LED lamp power circuit, and the power circuit utilizes the direct rectifying and wave-filtering of civil power, including rectifier bridge D1, filter resistance R3 and filter capacitor C2；The two-phase of civil power connects rectifier bridge D1 two ac input ends respectively, rectifier bridge D1 output cathode termination filter resistance R3 one end, filter resistance R3 another termination filter capacitor C2 one end, filter capacitor C2 another termination rectifier bridge D1 output negative pole end is, it is specified that the LED of quantity is connected in series at filter capacitor C2 both ends.This is a kind of very cheap LED lamp power circuit of cost, without the higher component of the costs such as transformer or switching tube.
Description
Technical field
It the utility model is related to the LED lamp power circuit of low cost.
Background technology
Develop with the production technology of LED, the cost of LED lamp bead is more and more lower, and LED lamp turns into huge numbers of families
Reality, household LED lamp generally replace incandescent lamp even other electricity-saving lamps to become a reality, and LED lamp turns into energy-conservation worthy of the name
Lamp.
The power circuit of LED lamp generally comprises the circuits such as transformer, current rectifying and wave filtering circuit or Switching Power Supply at present.And
The universal cost of circuit of these LED lamps is higher, it is impossible to meets the requirement of user.
Utility model content
A kind of higher deficiency of power circuit regular senior middle school cost of the utility model based on current LED lamp, there is provided purpose
It is：A kind of inexpensive LED lamp power circuit is provided.
The technical solution of the utility model：A kind of inexpensive LED lamp power circuit, the power circuit are straight using civil power
Meet rectifying and wave-filtering, including rectifier bridge D1, filter resistance R3 and filter capacitor C2；The two-phase of civil power connects rectifier bridge D1's respectively
Two ac input ends, rectifier bridge D1 output cathode termination filter resistance R3 one end, filter resistance R3 another termination filter
Ripple electric capacity C2 one end, filter capacitor C2 another termination rectifier bridge D1 output negative pole end is, it is specified that the LED series winding of quantity
It is connected to filter capacitor C2 both ends.
It is higher without costs such as transformer or switching tubes due to directly carrying out rectification to civil power in the utility model
Component is depressured, and is a kind of very cheap LED lamp power circuit of cost.
Further, in above-mentioned inexpensive LED lamp power circuit：Also wrapped in rectifier bridge D1 access civil powers one end
Include current-limiting resistance R1, filter resistance R2 and filter capacitor C1；The L phase lines of civil power meet current-limiting resistance R1 one end, current-limiting resistance R1
Another termination filter resistance R2 one end and filter capacitor C1 one end, the filter resistance R2 other end and filter capacitor C1's
The other end connects a rectifier bridge D1 input, the N phase lines of rectifier bridge D1 another input termination civil power.
Below with reference to drawings and examples, the utility model is described in detail.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Embodiment 1, the present embodiment be low cost LED lamp power circuit, as shown in figure 1, the circuit do not have transformer,
Also unlike Switching Power Supply, it is necessary to there is switching tube, an only rectifier bridge D1, three resistance, the circuit of two electric capacity compositions.
As shown in figure 1, the inexpensive LED lamp power circuit of the present embodiment include current-limiting circuit, input filter circuit,
Rectification circuit, output filter circuit.The L phase lines of civil power connect after current-limiting resistance R1 by by filter resistance R2, electric wave electric capacity C1 simultaneously
The input filter circuit that connection is formed is followed by a rectifier bridge D1 ac input end, rectifier bridge D1 another exchange input
Terminate the N phase lines of civil power.Output cathode termination filter resistance R3 one end, filter resistance R3 another termination filter capacitor C2's
One end, filter capacitor C2 another termination rectifier bridge D1 output negative pole end is, it is specified that the LED of quantity is connected in series and filtered
Electric capacity C2 both ends.In the present embodiment, civil power is usually 220V, can be with filter capacitor C2 both ends after rectifying and wave-filtering
Reach 250VDC, 38 LED lamps that can so contact as needed are at filter capacitor C2 both ends.
The LED lamp power circuit of the present embodiment is suitable for the more stable area of civil power, be cost the advantages of the circuit compared with
Low volume is smaller, the electric current of circuit also relative constancy, is mainly determined by the size of current of LED by filter capacitor C1.
As shown in figure 1, the LED lamp power circuit of the present embodiment has perfect triple impulse-current-proofs protection, can be most
The safety of the protection LED lamp bead of limits.I.e.：
Heavy current impact rectifier bridge when current-limiting resistance R1 prevents from turning on light.
Filter capacitor C2 is strobed, and high current is rushed to LED lamp bead when preventing from turning on light jointly with filter resistance R3
Hit.
Filter resistance R3 effect be in a short time repeatedly switch lamp when prevent high voltage and high current to LED lamp bead rush
Hit.
When filter capacitor C1 is 0.33uF, the electric current of circuit is within 20mA, be best suitable for connecing connected within 20 it is luminous
Pipe, the more electric currents of luminous tube quantity are then smaller, and about 0.47uF, filter capacitor C1 can be selected in filter capacitor C1 when more than 30
Operating voltage with filter capacitor C2 will be from more than 250V, and filter resistance R2, filter resistance R3 power are with 1W's.
Claims (2)
- A kind of 1. inexpensive LED lamp power circuit, it is characterised in that：The power circuit utilizes the direct rectifying and wave-filtering of civil power, Including rectifier bridge D1, filter resistance R3 and filter capacitor C2；The two-phase of civil power connects rectifier bridge D1 two exchange inputs respectively End, rectifier bridge D1 output cathode termination filter resistance R3 one end, filter resistance R3 another termination filter capacitor C2's One end, filter capacitor C2 another termination rectifier bridge D1 output negative pole end is, it is specified that the LED of quantity is connected in series and filtered Electric capacity C2 both ends.
- 2. inexpensive LED lamp power circuit according to claim 1, it is characterised in that：Accessed in rectifier bridge D1 Civil power one end also includes current-limiting resistance R1, filter resistance R2 and filter capacitor C1；The L phase lines of civil power connect the one of current-limiting resistance R1 End, current-limiting resistance R1 another termination filter resistance R2 one end and filter capacitor C1 one end, the filter resistance R2 other end A rectifier bridge D1 input, rectifier bridge D1 another input termination civil power are connect with the filter capacitor C1 other end N phase lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275917.1U CN206865366U (en) | 2017-03-21 | 2017-03-21 | A kind of inexpensive LED lamp power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275917.1U CN206865366U (en) | 2017-03-21 | 2017-03-21 | A kind of inexpensive LED lamp power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206865366U true CN206865366U (en) | 2018-01-09 |
Family
ID=60814481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720275917.1U Expired - Fee Related CN206865366U (en) | 2017-03-21 | 2017-03-21 | A kind of inexpensive LED lamp power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206865366U (en) |
-
2017
- 2017-03-21 CN CN201720275917.1U patent/CN206865366U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20190321 |