Matthew Kerwin
::
Circuits Problems
–
Step Response
-5mA
5kΩ
0.5µF
1mA
2kΩ
v
c
(0
-
) = 25 V
;
i
c
(0
+
) = 12.5 mA
v
c
(∞) = 2 V
;
i
c
(∞) = 0 mA
τ = 1 ms
v
c
(t) = 2 + 23e
-1000t
[V] ; t ≥ 0
time for v
c
to reach 0V:
never
i
c
(t) = 25 + 12.5e
-1000t
[V] ; t ≥ 0
time for i
c
to reach 0A:
never, but 5ms is close