Matthew Kerwin
::
Circuits Problems
–
Step Response
20mA
5kΩ
5µH
1µH
1V
2kΩ
i
c
(0
-
) = -20 mA
;
v
c
(0
+
) = -40 V
i
c
(∞) = 0.5 mA
;
v
c
(∞) = 0 V
v
c
(t) = 0 - 40e
-t
[V] ; t ≥ 0
time for v
c
to reach 0V:
never, but 2.083ms is close
i
c
(t) = -40 - 20.5e
-t
[V] ; t ≥ 0
time for i
c
to reach 0A: 1.547ms