LED driver

A LED driver, the first technology, applied in the direction of lighting devices, light sources, electrical components, etc., can solve the problems that LED drivers cannot meet the height requirements of flat lamps, lamps lose competitiveness, and the cost of magnetic cores is expensive, etc., to achieve high frequency suppression Electromagnetic noise, meeting height requirements, effect of reducing height
CN109451630APending Publication Date: 2019-03-08NINGBO FAREAST LIGHTING
0 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NINGBO FAREAST LIGHTING
Publication Date
2019-03-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to an LED driver. The LED driver comprises a first capacitor, a second capacitor, a transistor, a diode, an energy storage inductance unit and a control circuit board; two ends of the first capacitors are electrically connected with a power supply, two ends of the second capacitor are electrically connected with the load; a source electrode of the transistor is grounded through a resistor, a drain electrode is electrically connected with the first end of the second capacitor; the energy storage inductance unit comprises at least two energy storage inductors in series connection; a first connecting end of the energy storage induction unit is electrically connected with the second end of the first capacitor and the second end of the second capacitor, and a second connecting end of the energy storage induction unit is electrically connected with the drain electrode of the transistor; a control signal connecting end of the control circuit board is electrically connected with a grid electrode of the transistor. Through the LED driver disclosed by the invention, a magnetic core in each energy storage inductor of the energy storage induction unit is small, and the flattening arrangement can be realized, and then the height of the energy storage inductor can be reduced, and the height requirement of the flattened lamp is satisfied.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of LED lamps, and specifically relates to an LED driver. Background technique

[0002] At present, LED light sources have been gradually accepted by the lighting market and are constantly replacing traditional light sources. One of the differences between LED light sources and traditional light sources lies in the driving method. LED light sources must be driven by an LED driver to provide a constant DC current to realize the lighting function. In addition, the LED light source is a point light source. In order to realize large-area lighting, it is necessary to use multiple LED light sources to connect in series and parallel, and to achieve uniform surface lighting through the light distribution of the lamps. Therefore, a lamp composed of an LED light source can realize a flat lamp.

[0003] However, when designing a flat lamp, because the LED light source needs to be driven by an LED driver, the thickness...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More