Hi there- I'm a general electronics hobbyist and experimenter (not a very advanced one but a very curious one!). Yesterday I noticed that when I feed a 0-2 V sine wave in to a capacitor, and trace it on the other side of the cap, that over time the wave recenters itself over 0, becoming a -1 to +1 (approx) sine wave. Small cap happens instantly, but bigger cap I can see it happening over time... I'll attach a screen shot of the beginning, where it's slowly dropping lower. This is 50v 22uF cap. I've googled this all over and thought about it all day (I'm sure it has to do with the cap charging; but, why does it even charge (since I'm feeding it AC shouldn't it charge/discharge constantly?)). And once the cap is charged, why is it going up and down across 0 instead of just continuing to go 0-2? The sine wave generator and scope are one in the same device connected to my computer via USB. Thanks! Chris
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