How to find the charge time of a capacitor in series with a resistor?

[rocko75]

how do find the charge time of a capacitor in series with a resistor? Question for school

 

[pabloec]

capacitor charging

Very good page

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capchg.html

 

[barrybear]

Re: capacitor charging

CxR=T
C= capacitance in Farads
R= resistance in ohms
T= time in seconds
In t time the voltage across the capacitor wil be .6v

 

[electronics_kumar]

capacitor charging

it charging duration depends on its time constant RC ..Usually five times RC sec...

 

[vivek_bahire]

Re: capacitor charging

Vc = Vf-(vf-Vi)*e^(-t/(R*C))


Vf= vfinal
Vi=Vinitial

 

[Kral]

Re: capacitor charging

rocko75,
Assuming that the capacitor is initially dischharged, the following equation works:
Let Vin = the input voltage to the resistor
Vout = the capacitor voltage at the time of interest
Then
t = -ln[(Vin - Vout)/Vin]
Regards,
Kral

 

[miky_boy]

Re: capacitor charging

Fine thank's