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Electromagnetic Interference (EMI) & Electromagnetic Compatibility (EMC)

Electromagnetic Interference (EMI) & Electromagnetic Compatibility (EMC). Presented by Devraj Sabat EC200117322. Under the Guidance of Mr. N. Srinivasu. EMI SOURCES OF EMI REDUCING EMI EMC EMC DESIGN CONSIDERATIONS EMC & EMI TESTING. AGENDA. EMI-

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Electromagnetic Interference (EMI) & Electromagnetic Compatibility (EMC)

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  1. Electromagnetic Interference (EMI) & Electromagnetic Compatibility (EMC) Presented by Devraj Sabat EC200117322 Under the Guidance of Mr. N. Srinivasu

  2. EMI SOURCES OF EMI REDUCING EMI EMC EMC DESIGN CONSIDERATIONS EMC & EMI TESTING AGENDA

  3. EMI- It consists of any unwanted conducted or radiated signals of electric origin that can cause degradation in system or equipment performance. EMC- It is the ability of the system to function as designed without any degradation in performance due to EMI with in the operational environment INTRODUCTION

  4. INTRASYSTEM EMI- EMI problems with in the system one is dealing with. INTERSYSTEM EMI- EMI problems, that occur between two or more systems. Classification of EMI

  5. Sources Transmission Path Response EMI arises due to three basic factors

  6. Natural EMI sources Man made EMI sources Broadband EMI sources Narrowband EMI sources Conducted EMI sources Radiated EMI sources Sources of EMI

  7. Both Filtering & Shielding techniques are used to reduce electromagnetic disturbances. To reduce noise due to EMI at sources by EMC oscillators. Reduction of EMI

  8. First, EMC implies that the equipment will not generate unacceptable interference emission levels which could cause interference . Second, EMC implies that the equipment can tolerate ambient levels of interference without degradation of performance Electromagnetic compatibility (EMC)

  9. Connectors Grounding Shielding Components Electrostatic discharge EMC Design considerations

  10. Low level testing- Component, Equipment, Subsystem testing Intermediate level testing- System testing High level testing- Electromagnetic environment with the test item Testing

  11. Compliance tests- Performed at the end of design. Engineering tests- Deals with potential problems in the designing process . Audit tests- It is associated with manufacturing & quality Testing

  12. EMI is a major problem in the development of systems. EMC must be taken in to consideration during the design stage. Environmental reliability testing is used to eliminate potential problems There are many EMC standards used in the regulation of products that may cause EMI. Conclusion

  13. “Electromagnetic Compatibility Design Guide for Avoinics and Related Ground Support Equipment” by AD NAVAIR. “Electromagnetic Compatibility”, design handbook series 1.0. A.A. Smith Jr., Coupling of External electromagnetic fields to Transmission lines, John Willey & Sons. www.google. Com Military specification, Electric Cable, Aerospace vehicle, General specification for, MIL-C-7078, August 9, 1971. References

  14. Thank you

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