I'm not sure if my multimeter is at fault here, but I made a partial circuit in which I soldered in a voltage regulator (7805CT) and hooked a 22uF capacitor at the input and output (I connected the other leg of each capacitor to ground). I also added another 0.1uF capacitor at the output as well.
I measured the voltage at the output leg of the regulator using the 20 DCV setting on my multimeter (model DT-830B) and it displayed 5.11 instead of 5.
Is my voltmeter being stupid or do voltage regulators have tolerances? I don't understand why the value should be 5.11 and not 5.
I don't think my tracks have much to do with it because I have everything connected within 3mm of each other and the track width is at least 0.5mm.
Also, my input is a DC wall adapter that outputs 6 VDC and 900mA.