dc to ac

Hi,
Sorry, but I did not get what you are trying to say.

Actually, I know a truth and that is: "No circuit has 100% effeciency." Thus "Power in is always greater than power out."
You always loose some power in the circuit in the form of heat and other things. What do you say?

yes it's true that at 100% efficiency, power in=power out or visa versa. But as kinjalgp said, with the heat dispersment of all the components in the circuit, power in<power out or power out>power in. Heat=power