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- Опубліковано 1 жов 2024
- Electro Magnetic Pulses, or EMP, are powerful pulses of energy that come from several sources and could harm electronic circuits and equipments. We will explore what EMP are, where they come from, and how to protect your circuit from them.
#Electromagnetic pulses, or #EMP for short, can be a source of serious problems in eletronic equipments. While the most "spectacular" EMP comes from the detonation of a nuclear bomb in upper atmosphere that hopefully we'll never witness, the most common source of EMPs are #lightnings. They can cause severe havoc if not destruction to many electronic devices. In this video I'll discuss the three main types of EMPs, where they come from, and what to do to prevent them causing faults in your electronic #circuit board.
Full series of #Electronics:
• Hands on electronics
Dear Accidental Scientist, I'm happy to find your channel by accident! I myself happened to be an accidental scientist in lifelong apprenticeship!
I'm interested in making ones home less prone to surges and transients produced by grid in and off and from environmental forces.
Thank you for your vlog introducing us how the phenomenon of EMP can affect the electronics around us!
Great Video! Do you think the damage to your board through the power was from the EMP or Direct lightning - via the power wires? I havn't considered protection on the power input but I have mostly worked on battery powered devices.
Thank you. Yes I think it was from the EMP. The power port of that board is 24VDC from a SELV power supply that is shielded and connected to PE. That board is a module of a complex building automation system, so the power supply comes from a long cable that also carries the AB RS485 data singnal, and connects in parallel all the modules in the system. The cable is a standard ethernet cat.5. Thus I think the EMP induced a surge of voltage through that long cable (by long I mean ~100m). I think to the EMP also because there was no signs of burned components, that otherwise would had happened in the case of a direct lightning discharge that would have been wildly more destructive. When that incident happened every, and I mean *EVERY* electronic equipment in the building got destroyed. Fridge, TV, burglar alarm system, washing machine, gate control ...everything. The lightning stroke a nearby (about 50m) telephone junction box. Six other nearby houses were affected in total, every one had almost everything destroyed. At the Telecom local station the connected cabinet catched fire.
Note that the bulding where my modules were installed did not have the telephone line at the time (the building was a new construction). In one of the other houses interested by the event the telephone literally exploded.
It was an interesting experience.
@@AccidentalScience Wow! That is very interesting. Thanks for such a thorough reply!
@@mahmoodmirza3301as I've said in the previous reply, it was.