Matthew Kerwin
::
Circuits Problems
–
Step Response
10V
5kΩ
5µF
1µF
20mA
2kΩ
v
c
(0
-
) = -10 V
;
i
c
(0
+
) = -5 mA
v
c
(∞) = 40 V
;
i
c
(∞) = 0 mA
τ = 12 ms
v
c
(t) = 40 - 50e
-t/0.012
[V] ; t ≥ 0
time for v
c
to reach 0V: 2.678ms
i
c
(t) = -10 - 5e
-t/0.012
[V] ; t ≥ 0
time for i
c
to reach 0A:
never, but 60ms is close