# 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
145
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