question about the difference between components..

Discussion in 'Homework Help' started by transgalactic, May 16, 2008.

  1. transgalactic

    Thread Starter Active Member

    Apr 29, 2008
    74
    0
    i got here these two components

    http://img183.imageshack.us/my.php?image=64333414ko8.jpg

    i assume that this twisted square is some sort of battery
    but unlike normal battery
    when i looked at the solutions of questions regarding its KVL equations
    i got that unlike the normal battery when we go from + to - (inside threw the component )we get +V in the KVL equation

    unlike a normal battery
    when we go from + to - (inside threw the component )we get -V in the KVL equation
    ????
     
  2. Caveman

    Active Member

    Apr 15, 2008
    471
    0
    It is supposed to be a diamond. The typical convention (which is ignored all of the time) has 3 different types of voltage sources:

    1. The bottom symbol is a battery.
    2. Another symbol that you don't have here is a circle with + and -. This is an ideal independent voltage source.
    3. The top symbol is typically used with a dependent voltage source. It is typically used in modeling such as a transistor in which the collector current depends on the base current.

    Look here for a more thorough description: http://en.wikipedia.org/wiki/Voltage_source
     
  3. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    144
    The squared symbol is a controlled voltage source and for the purposes of the KVL analysis should behave the same as the battery voltage source.

    Caveman beat me to it!

    Dave
     
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