How to determine the LED bulb stroboscopic

by:Sehon     2020-10-22

  现在许多人家里都使用LED灯泡了

  究竟LED灯泡现在也比较廉价

  并且在功耗方面是最节能的

  下面给我们拆解一下这种LED灯泡

  看看内部的电路是怎样的

  这是拆下的一枚2W的灯泡

  如果直接拧灯罩是比较难拆开的

  使用吹风机吹一下边边的胶

  封口胶受热软化后

  就很容易打开了

  打开之后能够看到

  里边有一片LED控制电路和一片LED铝基板

  LED铝基板上有许多LED

  LED分成两组

  每组有6个LED相互串联

  LED灯泡控制电路的元器件

  包含有电阻、电容、二极管

  能够看到其实电路板很简单

  包含的元件并不多

  将上面电路板的电路图画出来是这样的

  图中只画了部分LED

  电容C1和电阻R1组成阻容降压电路

  降压后通过桥式整流电路进行整流

  整流后用电容进行滤波

  然后通过限流电阻R3输出电压点亮2组LED灯

  只需要这些元件就做成了一个LED灯泡

  是不是感觉很简单?

but similar to that of LED bulbs stroboscopic is actually bigger

under the simulation circuit of voltage waveform

stroboscopic is lower, the smaller the eye damage

high quality LED bulbs is constant current to drive the LED chip

this stroboscopic low

industry standard stroboscopic requirements for the qualified products in our country is 3125 Hz

which how to quickly distinguish the stroboscopic of the LED?

simple

is directly using a mobile phone camera

light leds in the camera focus

will be able to tell the stroboscopic of

low stroboscopic light bulbs, and investigation to the naked eye under the lens so little difference between

stroboscopic low LED bulbs

high stroboscopic light bulb, the line of mobile phone screen appear frequently moved

even blink

stroboscopic high LED bulbs

internal persistence flow chip, can effectively reduce the stroboscopic

usually chip with persistence flow light bulb with a higher price

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