App note: Understanding common-mode signals

in app notes by DP | 1 comment

maxApp

Here is a tutorial from Maxim on common-mode signals.

To understand how common-mode signals are created and then suppressed, you should first understand the interaction of shields and grounds in common cable configurations. The following discussion defines a common-mode signal, reviews the common cable configurations, considers shielded vs. unshielded cables, and describes typical grounding practices. The article discusses methods whereby common-mode signals are created and rejected.

The primary focus of this discussion is on RS-485/RS-422 cables and signals, but the discussion also applies to telephone, audio, video, and computer-network signals.

This entry was posted in app notes and tagged , .

Comments

  1. Alan says:

    If signals get coupled into an earth line, does that effect the operation of Earth Leakage Circuit Breakers [ELCB’s] ?
    Older models purely check for balance between active & neutral: any mismatch triggers the breaker. Do newer models check for current on the earth wire?

Leave a Comment

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Notify me of followup comments via e-mail. You can also subscribe without commenting.