Cables (161)

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Chapter Outline

Chapter 5 - Cables (Grounding and Shielding Techniques for EMI, EMC and ESD)

  • Magnetic Coupling into a Loop
  • Twisted Pair
  • Ribbon Cables
  • Large Mutual Inductance—Lines Close Together
  • Small Mutual Inductance—Lines Farther Apart
  • Effect of Poor Cable Grounding
  • Ground Current
  • Shielding
    • Shielded Capacitive Coupling
    • Coupled Response
    • Proper Termination of Shield
    • Conductor Shielding
    • Magnetic Field Produced by Current
    • Single-Point Ground
    • Magnetic Shield Carries Return Current
    • Alternate Current Paths
    • Magnetic Coupling Between Shield and Center Conductor
    • Shield Cutoff
    • Shield Loop Analysis
    • Ground Current
    • Effectiveness of Various Methods
    • Poor Shield Grounding
    • High-Frequency Current Flow
    • Poor Grounding Causes External Shield Current
    • Ferrite Choke Raises Z[sub]ex
  • Measuring Common-Mode Currents on Cables
  • Level of Allowed Current on Cables
  • Common-Mode Current Measurement Procedure
  • Coaxial Cable vs. Twisted Pair

Video Outline

Cables

Magnetic Coupling into a Loop • Twisted Pair • Ribbon Cables • Ribbon Cables • Large Mutual Inductance- Lines Close Together • Small Mutual Inductance - Lines Farther Apart • Poor Cable Grounding • Effect of Poor Cable Grounding • Ground Current • Shielding • Shielded Capacitive Coupling • Coupled Response • Shielding • Proper Termination of Shield • Conductor Shielding • Magnetic Field Produced by Current • Single-Point Ground • Magnetic Shield Carries Return Current • Alternate Current Paths • Magnetic Coupling Between Shield and Center Conductor • Shield Cutoff • Shield Loop Analysis • Ground Current • Effectiveness of Various Methods • Poor Shield Grounding • High-Frequency Current Flow • Poor Grounding Causes External Shield Current • Ferrite Choke • Measuring Common-Mode Currents on Cables • Level of Allowed Current on Cables • Common-Mode Current Measurement Procedure • Coaxial Cable vs. Twisted Pair