I try to understand the current behavior in capacitor when the AC source is connected. I have read many blogs in the internet to understand the concept of the charge flow in the capacitor when the ac is pass through it . In all the blog I have read, it starts with the +ve half cycle ac voltage and don't find very detailed and clear explanation for the negative half cycle.
I could follow the positive cycle of the ac voltage applied to the capacitor.
In the first +ve cycle ( 0 - 90 degree ) -- Voltage across the capacitor is 0 at t = 0. Hence the current starts from Max and reaches to 0 as the voltage across the capacitor starts build up which opposes the charge flow from the source.
In the first +ve cycle ( 90 - 180 degree ) -- Capacitor starts discharging the charge as the voltage across the capacitor > source voltage until it reaches the no charge state. Current reaches the negative peak now.
i(t) = C dv / dt
In the first -ve cycle ( 180 - 270 degree ) -- here i unable to get the point. when the voltage is dropping to more negative slope is negative. But the current tends to move to more positive ( -3, -2, -1 ). I am not able to follow this point. the voltage builds up in the capacitor should start opposing the voltage from the source. in this cast current should start decreasing but here it is increasing. My understanding is not correct. I try to visualize the current flow as if it happens in the complete 360 degree cycle. But i got stuck up here. Can some one please help to resolve my question with clear explanation of the current flow in the capacitor in the -ve cycle of AC source. please...
I could follow the positive cycle of the ac voltage applied to the capacitor.
In the first +ve cycle ( 0 - 90 degree ) -- Voltage across the capacitor is 0 at t = 0. Hence the current starts from Max and reaches to 0 as the voltage across the capacitor starts build up which opposes the charge flow from the source.
In the first +ve cycle ( 90 - 180 degree ) -- Capacitor starts discharging the charge as the voltage across the capacitor > source voltage until it reaches the no charge state. Current reaches the negative peak now.
i(t) = C dv / dt
In the first -ve cycle ( 180 - 270 degree ) -- here i unable to get the point. when the voltage is dropping to more negative slope is negative. But the current tends to move to more positive ( -3, -2, -1 ). I am not able to follow this point. the voltage builds up in the capacitor should start opposing the voltage from the source. in this cast current should start decreasing but here it is increasing. My understanding is not correct. I try to visualize the current flow as if it happens in the complete 360 degree cycle. But i got stuck up here. Can some one please help to resolve my question with clear explanation of the current flow in the capacitor in the -ve cycle of AC source. please...