# Capacitor Charge Time

by OZwurld
Tags: capacitor, charge, time
 P: 7 Hello all, I was reading this post on calculating the capacitor charge time: http://www.physicsforums.com/showthread.php?t=145203 . My problem is i have a capacitor (1000uF) and i want to determine its charge time but dont know the R value, is it something i chose arbitrarily or should it be in a datasheet. Thanks.
 P: 107 It should come from the circuit. If your resistance is at or near 0, then your current is very large and your capacitor would fill up instantaneously.
 P: 7 is there a typical value that i should use, or does that all depend on how much current i want?