Matthew Kerwin
::
Circuits Problems
–
Step Response
1mA
10kΩ
50µH
1µH
20mA
5kΩ
i
c
(0
-
) = 1 mA
;
v
c
(0
+
) = 5 V
i
c
(∞) = -20 mA
;
v
c
(∞) = 0 V
v
c
(t) = 0 + 5e
-t
[V] ; t ≥ 0
time for v
c
to reach 0V:
never, but 0.98ms is close
i
c
(t) = 5 + 21e
-t
[V] ; t ≥ 0
time for i
c
to reach 0A: 0.01ms