Question:
The circuit shown is at steady state before the switch opens at time t=0. Determine the voltage accross the inductor for t>0. The op-amp is assumed to be ideal.
Attempt:
I'm following the method the book uses for these types of questions which is to first convert the circuit connected to the capacitor to its Thévenin equivalent. So first I find the open circuit voltage and I get this to be 10V. Next I want the short circuit current so that I can get the Thévenin resistance. But if I replace the capacitor by a short circuit then I have a problem. The op-amp is ideal so no current flows along the inputs, which means that the short circuit current must flow around the outer loop. But then i'm going to get 3 voltage drops and no voltage rise
Thanks for any help!
Jon.
The circuit shown is at steady state before the switch opens at time t=0. Determine the voltage accross the inductor for t>0. The op-amp is assumed to be ideal.
Attempt:
I'm following the method the book uses for these types of questions which is to first convert the circuit connected to the capacitor to its Thévenin equivalent. So first I find the open circuit voltage and I get this to be 10V. Next I want the short circuit current so that I can get the Thévenin resistance. But if I replace the capacitor by a short circuit then I have a problem. The op-amp is ideal so no current flows along the inputs, which means that the short circuit current must flow around the outer loop. But then i'm going to get 3 voltage drops and no voltage rise
Thanks for any help!
Jon.