Matthew Kerwin
::
Circuits Problems
–
Step Response
-2.5mA
1kΩ
1µF
2.5mA
10kΩ
v
c
(0
-
) = 2.5 V
;
i
c
(0
+
) = 0.25 mA
v
c
(∞) = 25 V
;
i
c
(∞) = 0 mA
τ = 10 ms
v
c
(t) = 25 - 22.5e
-100t
[V] ; t ≥ 0
time for v
c
to reach 0V:
never
i
c
(t) = 2.5 + 0.25e
-100t
[V] ; t ≥ 0
time for i
c
to reach 0A:
never, but 50ms is close