- #1
pooface
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My knowledge on how inductors and capacitors operate in AC/DC is a bit shaky. My textbook and online material don't help my understanding, so I am hoping someone would be able to explain it more clearly.
In DC I know that capacitors store energy and charge up by time constants and then release their energy when used as independent sources. They gain voltage as they charge. I have firm knowledge here.
In AC, I have a few questions. I do know that there is Xc and using ohms law there is voltage dropped across the capacitor.
My question, is there energy stored in the capacitor in the same way of DC? In a FW bridge filter circuit, to smooth out the AC current the capacitor does discharge some current, hence the ripple. How does this work in AC?
My educated guess would be to convert the AC voltage to the DC equivalent and use DC properties to see how much the capacitor charges etc. This would mean that the capacitor stores energy in DC and has a separate AC voltage drop. Is this statement correct?
For inductors I have a much weaker understanding.
In DC, I don't know how inductors actually work except that they store energy in the form of an magnetic field. But I don't know how this actually works. Is it the same as capacitors where as time goes by the capacitor produces voltage opposing the DC source? Does it use time constants as well?
In AC, I know that Inductors have XL and also drop a voltage by ohms law. But how do they work in AC? What is their purpose except to bring the current/voltage out of phase and for resonance?
Thank you.
In DC I know that capacitors store energy and charge up by time constants and then release their energy when used as independent sources. They gain voltage as they charge. I have firm knowledge here.
In AC, I have a few questions. I do know that there is Xc and using ohms law there is voltage dropped across the capacitor.
My question, is there energy stored in the capacitor in the same way of DC? In a FW bridge filter circuit, to smooth out the AC current the capacitor does discharge some current, hence the ripple. How does this work in AC?
My educated guess would be to convert the AC voltage to the DC equivalent and use DC properties to see how much the capacitor charges etc. This would mean that the capacitor stores energy in DC and has a separate AC voltage drop. Is this statement correct?
For inductors I have a much weaker understanding.
In DC, I don't know how inductors actually work except that they store energy in the form of an magnetic field. But I don't know how this actually works. Is it the same as capacitors where as time goes by the capacitor produces voltage opposing the DC source? Does it use time constants as well?
In AC, I know that Inductors have XL and also drop a voltage by ohms law. But how do they work in AC? What is their purpose except to bring the current/voltage out of phase and for resonance?
Thank you.