I would like to get a better intuitive feel for impulse currents and voltages. I can [for the most part] work them out mathematically but I'm not really feeling what's going on from a physics standpoint. Does anyone have any explanations and/or suggestions for good places to read more about this?

Question

anonymous · Answer

impulse is not real it's the bridge between math and reality . so u can't feel it . 
i think the nearest function in reality is turning on and after that turning off immediately the keys .

anonymous · Answer

But there is such a thing as an impulse imput in circuitry, right? what would be it's "non ideal" equivalent in an actual circuit?

anonymous · Answer

as i know we can't make a real impulse for our circuit ! the nearest function is pulse . 
some times we show impulse in this way : 
$$\delta = \lim \epsilon \rightarrow \infty  1/\epsilon$$
may i know for which lesson u need this ?

anonymous · Answer

Impulse can be thought of as a pulse having very small width 'd' such that its width 'd' tends to zero and the area of impulse is 1. So its amplitude becomes 1/d with limit d tends to 0. This way theoretically, Impulse function has infinite amplitude and is present at origin only. As Roya said, Impulse can not be practically synthesised, it is only used in theory.