Electromagnet Interference.

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Report: Electromagnet Interference

In this report I will look into the basis of electromagnet interferences! What is it may you think? Well never the matter because further on in this report, there would be more in-depth explanation on this topic! There will be annotated pictures which illustrate what is happening in some parts of this report so you the reader can understand it much better!

What is Electromagnetic Interference (EMI)?

First of all what is electromagnet might you ask? Well to put it in simple terms it is basically a live current going through an electrical wire that produces what we call a magnetic field! The term "electromagnetic" comes from the relationship between electricity and magnetism. The two forces always accompany each another. Where you have magnetism you have electricity and vice versa. Either cannot work nor exist without the other!

Another occasion is when you are next to your television set and you mobile phone goes off! You should notice a noise that interferes with the sound which is what we call electromagnet interference.

What Causes EMI?

There are three types of causes EMI. They are inherent, natural and man made! I will now talk through how each one of these work!

* Inherit: This produces noise but with any electronic equipment! A good example would be your television set making funny sounds when say a mobile phone is ring! The technical explanation for this is the thermal agitations of electrons that are flowing through the circuit resistance!

* Man Made: A number of different classes of electronic and electrical equipment produce man-made EMI! They include power generators transmitters, power lines, motors, lighting, engines and electrical controllers. People might think these equipment help us live better in life but they do have downsides! These devices can cause severe EMI, which can damage operation to land and sea data processing equipment.

* Natural EMI: This is caused by natural events such as rain, snow electrical and solar radiation! Usually the interference comes in the form of static or noise. Older communications and data links between e.g. land, sea and air would be affected by this the most but as technology is more advanced, most modern day digital equipment is not affected but this type of EMI. Talking from experience, the new digital TV service I have doesn't get affected by the weather much and the picture quality is clearer whereas before when I had the satellite TV, every time when the weather is bad I wouldn't be able to watch it because the signals are getting disruptive easier than digital TV.
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What Are The Effects of EMI?

Electromagnetic interference could affect anything that uses electricity. Anything from pacemakers to computer monitors can be affected! The difference is that they can be affected in different ways!

For example a pacemaker can malfunction because the EM signals disrupt the circuit boards inside of it. It is such a problem that even airport and hospitals have banned the use of them! Many hospitals have use wireless for equipment networking. For instance looking at the picture of the heart monitor, the black aerial/antenna sticking out of the top of the ...

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