Matthew Kerwin
::
Circuits Problems
–
Step Response
5V
10kΩ
0.1µF
0.1µF
20V
5kΩ
v
c
(0
-
) = -5 V
;
i
c
(0
+
) = -1 mA
v
c
(∞) = -20 V
;
i
c
(∞) = 0 mA
τ = 1 ms
v
c
(t) = -20 + 15e
-1000t
[V] ; t ≥ 0
time for v
c
to reach 0V:
never
i
c
(t) = -5 - 1e
-1000t
[V] ; t ≥ 0
time for i
c
to reach 0A:
never, but 5ms is close