I have designed a common emitter amplifier using a BJT and I need to perform a DC analysis, followed by a small signal AC analysis, on it. Before I continue, I will admit that this is homework, but please don't stop reading yet. I am not looking for anyone to do these analyses for me, but I merely want to know if it is even possible to perform them by hand, and if so, then what is meant by these terms so that I can do it myself. If I put this question in the homework help forum, probably no one would know the answer. Now, I think I know how to do this using a simulator, but in the outline of the task, it mentions that simulation is optional, making me think that it is possible to do these by hand. Am I right in thinking that for DC analysis, you just replace any AC voltage sources with a short circuit, and replace capacitors with an open circuit, and then just perform standard circuit analysis? Then for AC analysis, I'm much more lost. I guess you would replace DC voltage sources with a short circuit, but then what defines a 'small' signal, what source frequency do you choose to analyse with, etc? Please help, I need a reply ASAP because I can't start this until I know what it is I'm even supposed to be doing!