The light-emitting diode (LED) has become ubiquitous in the technology that surrounds our lives today. Practically everywhere you look, LEDs are visible; your car, your computer, your microwave oven, your cell phone, etc. Even in household and commercial lighting applications, we see LED technology taking over where the older less efficient fluorescent and filament bulbs use to dominate.To get more news about Best led flashlight, you can visit official website.

In the interests of greater electrical efficiency, older technology light bulbs are being phased-out in favor of the newest LED and fluorescent technologies, which have advanced to the point where the light that is produced from an LED bulb for instance, is comparable in brightness (in some cases, better) than the old standbys, while using less energy and generating less heat.

One of the most useful innovations related to LED bulbs in our daily lives has been in flashlight technology. How many times have you picked-up an older flashlight with an energy hungry filament bulb, only to find the batteries are low or dead, or the bulb is burned-out?. Of course the filament bulb was also prone to failure from impact, which could cause the filament to break. And of course filament bulbs have a very short life compared to an LED bulb.
LEDs are direct-current (‘D.C.’) semiconductors; solid-state diodes. Diodes conduct electrons (current) in one direction only, and in that one direction, depending on the particular diode, they have some ability to handle momentary over-voltage conditions. However, their capability to handle reverse voltage is very low and they will readily fail. The alternating current (‘A.C.’) powered LED lights, as well as compact fluorescent lights use switching transistors in their design to allow the use of A.C. current, and these solid-state semiconductors are also very sensitive to momentary transitory high-voltage electromagnetic fields.

And here’s the ‘gotcha’: An EMP will generate a high-voltage electromagnetic field that will hammer most of these solid-state semiconductors, rendering them useless.

With this understanding, we now see that tactical LED flashlights and electronic targeting optics as well as any other devices that have any solid-state semiconductors inside will likely be damaged by an electromagnetic pulse (‘EMP’).

As we begin to apply this information to the equipment that many Preppers, law-enforcement and military have integrated into their plans, we suddenly realize that even the most basic items would be toast, just when they are needed most: