Negative voltage generator article

Discussion in 'General Electronics Chat' started by upand_at_them, Sep 1, 2016.

  1. upand_at_them

    Thread Starter Senior Member

    May 15, 2010
    I thought I understood capacitors, voltage doublers and such until I read this article:


    If you charge one side of a capacitor to 10V the other side does not go to 10V as well. Right? This is very confusing.
  2. Robin Mitchell

    Distinguished Member

    Oct 25, 2009
    Hi, I am the author of this article.

    This is called capacitive coupling and is concerned with AC signals that change quickly. For DC voltages this is not true but if you apply an AC voltage on one side of a capacitor plate you will see a voltage "trying" to match this voltage on the other side.