# HELP-solving differential equation RL- RLC

Discussion in 'Homework Help' started by marten.100, Jan 1, 2017.

1. ### marten.100New Member

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I am trying to solve the questions below could you help me ?

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2. ### RatchitWell-Known Member

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Before you can solve the DEs, you have to derive them. So, what are the DE's?

Ratch

3. ### RatchitWell-Known Member

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It looks like the OP ran away from his question. Therefore, I will do the first problem just to show those unfamiliar with differential equations (DE) a glimpse of how certain DEs are solved by the separation of variables. As the circuit is shown, the capacitor is energized to 8 volts before the switch is opened. The DE's are determined and solved below. The output voltage is one-third the capacitor voltage.

Next we plot the voltage for 3 seconds.

Ratch

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5. ### specWell-Known MemberMost Helpful Member

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Majestic Ratch.

spec