For simple circuit simulation, you can use Ktechlab (directly su -c
'yum install -y ktechlab').
It's not very fast, not very accurate, but very graphic and
simple. It
may fits for your purpose...
wow this app suits my requirement. Thanks
Thanks for all you foryour quick and friendly responses. KTechlab was
more that enough for my requirement. It seems that the other apps
including gEDA are move advanced and need a lot of effort in learning.
We will be having a module on circuit simulation in near future. They
use Spice and I hope to use ng-spice as I'm much more interested in
FOSS.