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Use this tag for circuits that only contain passive components, such as resistors, capacitors, and inductors. This includes RC, RL, LC, and RLC circuits.
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Trying to understand the critically damped equations of a RLC circuit
I am trying to understand the equations of the critically damped equations of a RLC circuit here
I see this part on page 16
The part I do not understand is this one:
How can part of the equatio …
1
vote
2
answers
239
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Trying to understand why the signal was inverted on this RC step response equation
I am watching this video where the guy is deriving the equations for the step function of a series RC circuit.
At some point he has the following equation:
\$ \frac{dt}{RC} = \frac{dv}{v_s - v} …
1
vote
1
answer
152
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Trying to understand the magic the author of this PDF did explaining the critically damped e...
I am reading this doc about the equations for the step function for the RLC circuit, critically damped solution.
At page 16 we have these lines...
But there is a magic between these lines...
Ho …
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1
answer
2k
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What is the meaning of current at infinite time for a series RLC circuit formula
I am reading this doc.
At one point, the author says the current equation form a critically damped series RLC circuit when a step function is applied is:
\$ I_L(t) = I_{\infty} + (B_1 + B_2t)e^{-\al …
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2
answers
1k
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Why exactly a RLC Circuit powered by DC oscillates?
First sorry if the question is stupid... I am learning.
I am trying to visualize here, without equations, what happens to a RLC circuit that makes it oscillate.
Consider a RLC circuit, a switch and …
0
votes
1
answer
176
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How do I calculate the unknowns of the current equation for a RLC series circuit?
Suppose I was dealing with the following voltage equation for the RLC series circuit:
\$ v(t) = Ae^{m_1t} + Be^{m_2t} + V_s \$
To know the values of A and B I would do the two initial conditions:
…
1
vote
1
answer
73
views
Finding the unknowns of a current equation leads to non-sense
Suppose a series RLC circuit that is critically damped.
Circuit is RLC in series with a DC voltage source \$ V_S \$ and a switch initially open. Capacitor and inductor are both discharged.
at t=0 th …
0
votes
1
answer
519
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How do I find the current equations for the RLC Series Circuit?
Let's talk about a RLC series circuit. R, L and C are in series with a battery and a switch. The switch is open. L and C are discharged.
At t=0, the switch is closed and the battery (V1) feeds the ci …
0
votes
2
answers
216
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What are the initial conditions used to find the coefficients in the current equations?
Suppose a RLC series circuit. R, L and C are in series with a battery and a switch. The switch is open. L and C are discharged.
At t=0, the switch is closed and the battery (V1) feeds the circuit.
I …
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2
answers
895
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Simulating all transient solutions for RLC series circuits
I am reading this page that contains the transient solutions for RLC series circuits: over-damped, critically damped and under-dumped.
This site presents these graphics for the 3 cases:
Then I h …
0
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1
answer
150
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Trying to understand the transient current equation on a RLC circuit
I am reading this doc
I see this magic happening on the third line of equations...
How in the name of Math, does this
\$ Ae^{st} \$
appeared there?
Magic?
1
vote
1
answer
133
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Trying to solve a RL circuit by hand but simulator calculates a value I do not understand
I have this circuit. V3 is just a trigger to close the switch, just ignore it.
The switch is open for a long time. So, the left part of the circuit is working for a long time and the inductor is fu …