How to determine the LED bulb stroboscopic

　　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