Engineering Solving RC Circuit Pulse with Step-by-Step Approach

AI Thread Summary
The discussion revolves around solving an RC circuit problem using a step-by-step approach. The initial assumption for the voltage solution is v(t) = K1 + K2 * e^(-t/RC), but there are concerns about the accuracy of the constants K1 and K2. It is noted that V(0+) and V(0-) are both zero, indicating that the capacitor does not charge instantly with a pulse. Participants emphasize the need to recalculate the constants based on the correct initial conditions and to determine the circuit's response for t > 1s. The focus remains on ensuring the solution aligns with the principles of RC circuits.
DefaultName
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Hi, I have this problem to do for HW. I did what it asked for, or so I think. I think I may have made a mistake somewhere, it's telling me its not correct. Can you check it out?

BTW, I have to use the step by step approach. I'm assuming my solution will be v(t) = K1 + K2 * e^(-t/RC).
I then find V(infinity), V(0+) and V(0-), Rthevenin.

http://img240.imageshack.us/img240/6569/untitledzn8.png
 
Last edited by a moderator:
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DefaultName said:
Hi, I have this problem to do for HW. I did what it asked for, or so I think. I think I may have made a mistake somewhere, it's telling me its not correct. Can you check it out?

BTW, I have to use the step by step approach. I'm assuming my solution will be v(t) = K1 + K2 * e^(-t/RC).
I then find V(infinity), V(0+) and V(0-), Rthevenin.

http://img240.imageshack.us/img240/6569/untitledzn8.png

V(0+) = V(0-) = 0. The input pulse does not charge the capacitor instantly. Only an impulse can do that.
 
Last edited by a moderator:
ah I see, we haven't hit impulses yet. Is the rest correct?
 
DefaultName said:
ah I see, we haven't hit impulses yet. Is the rest correct?

You must recalculate the constants K1 and K2 for the correct initial condition.
And you must calculate the response for t > 1s.
 

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