Can a DC signal voltage charge a capacitor?

Answer 1

Um, Michael L is completely incorrect.
A DC signal means a constant voltage--as if a battery were connected across the capacitor. Because the voltage across the capacitor therefore has to be the same as the voltage across the battery, and because the only way to get a voltage across a capacitor is by charging the capacitor (C=Q/V is the definition of capacitance) the DC voltage must charge the capacitor.

Answer 2

Absolutely. No question - capacitors are used to smooth out the ripples in a rectified AC signal for a more consistant DC supply. They can do this because when the voltage starts to fall, the capacitor discharges to boost it back closer to a straight DC pattern.

Answer 3

No it can't. A capacitor relies on an AC signal to become charged. It's the positive and negative flow of an AC signal which incites a strong magnetic field in a capacitor.

Answer 4

A DC signal is what charges it, or one half, + or - rectified off the AC signal. The AC signal will charge it, but the charge will discharge as the voltage cycles the other way. That's referred to as a lag voltage.

Answer 5

Yes! But you might get better answers describing the circuit in which you have a DC signal voltage?

Answer 6

Yes ,It needs 5(1/RC) Sec to complete charge

Answer 7

Better than AC. It leads to a steady charge.
Th

Answer 8

yes