Help with Series RLC circuit

Discussion in 'Homework Help' started by wiz0r, Nov 20, 2011.

1. wiz0r Thread Starter Active Member

May 2, 2008
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Edited for assignment purposes...

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2. t_n_k AAC Fanatic!

Mar 6, 2009
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Write the KVL differential equation form for the simple series loop comprising the capacitor, inductor and two 60Ω resistors. Use the voltage on 1mF C at t=0 as the initial condition and decide what the current will be at t=∞. You've correctly stated that i(0+)=0.

Then solve the differential equation per standard methods to find i(t).

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3. wiz0r Thread Starter Active Member

May 2, 2008
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Edited for assignment purposes...

Last edited: Nov 20, 2011
4. t_n_k AAC Fanatic!

Mar 6, 2009
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Looks fine so far.

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5. wiz0r Thread Starter Active Member

May 2, 2008
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Edited for assignment purposes...

Last edited: Nov 20, 2011
6. t_n_k AAC Fanatic!

Mar 6, 2009
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Correct - but I'm tired of holding your hand.

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7. wiz0r Thread Starter Active Member

May 2, 2008
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Edited for assignment purposes...

PS: I'm really thankful for all your help...

Last edited: Nov 20, 2011
8. wiz0r Thread Starter Active Member

May 2, 2008
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After several headaches and the help of others I found out that:

i(t) = 0.388e^(-10.73 * t) + -0.388e^(-37.26 * t)

Woohoo.. topic closed..

9. thatoneguy AAC Fanatic!

Feb 19, 2009
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This thread will certainly help those who come along in 6 months asking the same question.

10. t_n_k AAC Fanatic!

Mar 6, 2009
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Presumably Wiz0r doesn't want their circuit theory teacher too easily deducing they were receiving help online.