• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Electromagnet Interference.

Extracts from this document...

Introduction

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! ...read more.

Middle

This means that space with magnetic fields can be turned into corridors, storerooms, or lounge areas so there is a minimum chance EMI can take place! Obviously doing this sort of planning takes a lot of time and expertise; you can't just move things around and think you have done it all! In some cases, individual devices can emit fields and can interfere with other equipment so asking students/colleagues to take care when using such devices. FMS Jitter Box Another way in stopping EMI is by using the device which is called FMS Jitter Box. This box goes around the monitor of a PC and protects the monitor by attracting and absorbing the external ELF magnetic fields! The interference is prevented and the image remains stable like normal. I will give another scenario so that it is easier for you to understand! There are common (elevated magnetic fields include printers, monitors, scanners, copiers and power lines) and hidden sources (magnetic fields include electrical cables, power transformers or electric doors) can cause the computer screen monitor to jump and pictures colours going in waves and jitter! As you can see from the diagram on the left, the magnetic emissions are going through the monitor which would cause the problems I've mentioned previously! ...read more.

Conclusion

Infra red systems can be safely used at the same time with the most sensitive electronic equipment without any adverse effect! Advantages of using Infrared I have shortened out some advantages for using infrared as a way of communicating: * No potential health risks. * Short range predictable area of coverage, allows total security and the segregation of systems by distance. * It is unaffected by other electromagnet radiation in the spectrum up to and including several GHz. * Has little or no electromagnetic radiation below several GHz. * Requires no licence requirements. * Very clear communications. Disadvantages of using Infra-Red * Not being able to cover far distances as radio waves does * The signals cannot pass through walls or ceilings Conclusion After reading this report, you may have come to the conclusion that EMI affects us in everyday life whether you're at an airport, petrol station forecourt or even at home! Some may even not know it is happening but we know it is happening all day and everyday somewhere on Earth. As technology advances, we may have more EMI to deal with, but what goes with bad has to come good! Maybe a new theory or invention could come out within the distance future which could put an end to EMI? Name: Lan Cun Nim Student Number: 031155108 Systems & Signals (EE1FSS) ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Fields & Forces section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Fields & Forces essays

  1. Peer reviewed

    Investigating the forces acting on a trolley on a ramp

    5 star(s)

    = displacement / time The percentage error relating to the measurement of the piece of card can also be incorporated into the final percentage error. This is calculated in the following way; (0.5 / 102.0) x 100 = 0.49% (2d.p.)

  2. Peer reviewed

    Energy and its uses

    3 star(s)

    to rotational energy at the generator with losses due heat and sound. It then becomes kinetic energy at the belt with losses due to heat, friction and sound, energy is then converted to rotational energy driving the line shaft with losses due to heat and friction whilst applying gravitational potential energy (GPE)

  1. To investigate the effect of current on the strength of an electromagnet field.

    domains are being lined up and this is shown by the approximate straight line. Towards the end of the graph the electromagnet is running out of domains to line up in the magnet and as shown on the predicted graph the magnet should reach saturation, the point at which all

  2. Investigating the relationship of projectile range and projectile motion using a ski jump.

    the following table: Drop height (h1)/cm Velocity/m s-2 Time/sec Theoretical Distance calculated/cm 30 24.26 2.47 59.92 40 28.01 2.86 80.11 50 31.32 3.19 99.91 60 34.31 3.50 120.09 70 37.10 3.78 140.24 80 39.62 4.04 160.06 Below is a graph that shows the theoretical values and my actual values Evaluation

  1. To see how the number of coils on an electromagnet affect its strength.

    Another thing is that the power pack's voltage should always be set to four Volts, no more and no less. If I do change it, it will disrupt my experiment and cause my results to be awry. As the circuit was switched on, the wires got hot.

  2. New Technological Advances in Wing Design

    Conversely at supersonic speeds, which are speeds greater or equal to the speed of sound (768 mph), air flow becomes rather turbulent just a few centimetres behind the leading edge of the wing. This turbulence causes friction on the wing and a massive amount of drag.

  1. What Affects the Strength of Magnetism Exerted By an Electromagnet?

    Therefore, a weak magnet can be formed. Later on, 'Hans Christian Oersted' discovered that electricity has a magnetic effect. A wire carrying a current exerts a magnetic field. We can determine the direction by using the 'Right-hand Grip Rule'. However, we could also determine the direction be looking down on

  2. Lab Report - In this lab report, it will describe the weight of the ...

    of 1.47 � 0.01 seconds, having a time difference of 0.07 � 0.01 seconds compared to the second displacement. This also confirms the conclusion statement, as the displacement increases the period of the pendulum increases. The source of error is human error in timing of the swing using a stopwatch.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work