Terminology ("shunting away")

Discussion in 'General Electronics Chat' started by gerases, Feb 19, 2013.

  1. gerases

    Thread Starter Member

    Oct 29, 2012
    I'm reading Charle's Platt's encyclopedia of electronic components Vol I and while reading about inductors, their use as high-pass / low-pass filters is mentioned (resistor + coil). When describing the high-pass filter, the author says that in it, the signal is "shunted away" from the output.

    What does "shunting away" mean in general and specifically in that context?

    The way I understand a high-pass filter based on a coil (coil after a resistor) is that a coil will drop all of the voltage if it's from a high-frequency signal. Thus, if a load is connected across that coil, it will get voltage spikes corresponding to each high-frequency spike. But I can't deduce what "shunting away" would mean.
  2. BillB3857

    AAC Fanatic!

    Feb 28, 2009
    It means sent another way.
  3. JMac3108

    Active Member

    Aug 16, 2010
    As Bill said, shunting is to send another way.

    For example, in an RC low-pass filter ... a simple way to look at it is to say the C shunts the high frequencies to ground.

    Or in an LC low-pass filter ... the L blocks high frequencies, and the C shunts them to ground.
    Last edited: Feb 19, 2013