CN203884034U - Non-isolated LED driving power source - Google Patents
Non-isolated LED driving power source Download PDFInfo
- Publication number
- CN203884034U CN203884034U CN201420139467.XU CN201420139467U CN203884034U CN 203884034 U CN203884034 U CN 203884034U CN 201420139467 U CN201420139467 U CN 201420139467U CN 203884034 U CN203884034 U CN 203884034U
- Authority
- CN
- China
- Prior art keywords
- driving power
- led driving
- power source
- lnk302p
- chip
- 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
Links
Landscapes
- Led Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model belongs to the technical field of switching power sources and relates to a non-isolated LED driving power source. The non-isolated LED driving power source comprises an LED lamp group, a chip LNK302P as well as a wiring end J1 and a wiring end J2 which are used for connecting the power source. With the non-isolated LED driving power source adopted, only a few peripheral components are needed, and therefore, the cost of the system is low, and the size of the system is small.
Description
Technical field
The utility model relates to switch power technology field, relates in particular to non-isolation LED driving power.
Background technology
LED, as novel energy-conserving light source, has the features such as light efficiency is high, environmental protection, life-span length.It is that power supply supply is converted to specific electric current and voltage with the luminous power supply changeover device of driving LED that LED needs the driving power LED driving power of constant current output while use, under normal circumstances, the input of LED driving power comprises high pressure industrial frequency AC (being civil power), low-voltage direct, high voltage direct current, low pressure high-frequency ac etc.
Existing non-isolation LED driving power also exists peripheral component more, and system cost is higher, the shortcoming that volume is larger.
Summary of the invention
The purpose of this utility model is to provide for the deficiencies in the prior art a kind of non-isolation LED driving power, only needs few peripheral cell, and system cost is lower, small volume.
For achieving the above object, the utility model adopts following technical scheme: non-isolation LED driving power, it comprises LED lamp group, chip LNK302P, and for connecting terminals J1 and the J2 of power supply, terminals J1 is connected with one end of frequency sensitive resistor RF1, the other end of frequency sensitive resistor RF1 is connected with the positive pole of rectifier diode D1, the negative pole of rectifier diode D1 is connected with one end of frequency sensitive resistor RF2 and the positive pole of capacitor C 1, and one end of frequency sensitive resistor RF2 is connected with the positive pole of capacitor C 1 and the 1st pin of chip LNK302P; Between the 3rd pin of chip LNK302P and the 5th pin, be connected with capacitor C 3, the 5th pin of chip LNK302P is connected with one end of inductance L 1 and the negative pole of rectifier diode D1; LED lamp group is connected between terminals J2 and the positive pole of rectifier diode D1; Described capacitor C 1, C2 and the other end of inductance L 1 are connected terminals J2.
The utility model beneficial effect is: non-isolation LED driving power described in the utility model, only need few peripheral cell, and system cost is lower, small volume.
Brief description of the drawings
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described: as shown in Figure 1, non-isolation LED driving power described in the utility model, it comprises LED lamp group, chip LNK302P, and for connecting terminals J1 and the J2 of power supply, terminals J1 is connected with one end of frequency sensitive resistor RF1, the other end of frequency sensitive resistor RF1 is connected with the positive pole of rectifier diode D1, the negative pole of rectifier diode D1 is connected with one end of frequency sensitive resistor RF2 and the positive pole of capacitor C 1, and one end of frequency sensitive resistor RF2 is connected with the positive pole of capacitor C 1 and the 1st pin of chip LNK302P; Between the 3rd pin of chip LNK302P and the 5th pin, be connected with capacitor C 3, the 5th pin of chip LNK302P is connected with one end of inductance L 1 and the negative pole of rectifier diode D1; LED lamp group is connected between terminals J2 and the positive pole of rectifier diode D1; Described capacitor C 1, C2 and the other end of inductance L 1 are connected terminals J2.This non-isolated buck-booster type LED driving power, can replace polarity free capacitor or resistance step-down mode, and number of elements is few, has low cost, little, the lightweight advantage of size.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (1)
1. non-isolation LED driving power, it is characterized in that: it comprises LED lamp group, chip LNK302P, and for connecting terminals J1 and the J2 of power supply, terminals J1 is connected with one end of frequency sensitive resistor RF1, the other end of frequency sensitive resistor RF1 is connected with the positive pole of rectifier diode D1, the negative pole of rectifier diode D1 is connected with one end of frequency sensitive resistor RF2 and the positive pole of capacitor C 1, and one end of frequency sensitive resistor RF2 is connected with the positive pole of capacitor C 1 and the 1st pin of chip LNK302P; Between the 3rd pin of chip LNK302P and the 5th pin, be connected with capacitor C 3, the 5th pin of chip LNK302P is connected with one end of inductance L 1 and the negative pole of rectifier diode D1; LED lamp group is connected between terminals J2 and the positive pole of rectifier diode D1; Described capacitor C 1, C2 and the other end of inductance L 1 are connected terminals J2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139467.XU CN203884034U (en) | 2014-03-26 | 2014-03-26 | Non-isolated LED driving power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139467.XU CN203884034U (en) | 2014-03-26 | 2014-03-26 | Non-isolated LED driving power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203884034U true CN203884034U (en) | 2014-10-15 |
Family
ID=51684491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420139467.XU Expired - Fee Related CN203884034U (en) | 2014-03-26 | 2014-03-26 | Non-isolated LED driving power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203884034U (en) |
-
2014
- 2014-03-26 CN CN201420139467.XU patent/CN203884034U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204069441U (en) | LED illumination non-isolated drive circuit | |
| CN202551459U (en) | LED (Light Emitting Diode) driving power supply module for silicon controlled regulating circuit | |
| CN204652745U (en) | A kind of constant current driver circuit for LED | |
| CN202035201U (en) | LED (light-emitting diode) energy-saving lamp integration module | |
| CN202713751U (en) | LED energy saving lamp integrated module | |
| CN203884034U (en) | Non-isolated LED driving power source | |
| CN203912244U (en) | An LED array illuminating lamp drive circuit | |
| CN203884031U (en) | LED constant current driving circuit | |
| CN203387719U (en) | LED driver used for illumination | |
| CN202310223U (en) | Stable-sampling-voltage LED (light-emitting diode) constant-current drive power source | |
| CN201789659U (en) | LED drive circuit | |
| CN205093010U (en) | Light -emitting diode (LED) driving circuit | |
| CN203801129U (en) | High-efficiency low-cost LED driving circuit | |
| CN204377187U (en) | A kind of LED Modular street lamp with single-stage PFC control circuit | |
| CN102781136A (en) | LED (Light-emitting diode) energy-saving lamp integration module | |
| CN203884030U (en) | LED switching power source adopting primary side control technology | |
| CN204005588U (en) | Lamp affixed to the ceiling | |
| CN203883679U (en) | LED switching power source controller integrated circuit | |
| CN203608437U (en) | LED power supply with PFC circuit | |
| CN202602959U (en) | Bridge circuit and led driving circuit | |
| CN202998593U (en) | Anti-impact power supply circuit and LED lamp | |
| CN203086794U (en) | Constant-current source of LED lamp | |
| CN202660389U (en) | High-voltage light emitting diode (LED) outdoor lighting lamp | |
| CN201821541U (en) | Energy-saving circuit enduing LED lamp with various levels of brightness | |
| CN206807828U (en) | A kind of conversion equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20150326 |
|
| EXPY | Termination of patent right or utility model |