Thevenin equivalent Definition and 160 Threads

I trying to figure out a thevenin equivalent circuit I want to calculate the current I so I can't get the resistance for the thevenin equivalent. Im not 100% sure how to calculate I, can I use KCL on the node under the number -8.7V? http://img98.imageshack.us/my.php?image=curfc7.jpg

Homework Statement I really don't see how the Thevenin equivalent circuit is obtained from the one on the left. The way learned to find Thevenin equivalent circuit considers the circuit network in between 2 nodes. This one appears to have 3 nodes. And why is the thevenin resistance given as...

Homework Statement you have a phototransistor that you have modeled as a Thevenin equivalent circuit. It has a output impedence(Thevenin Impedence) of 10kohm and produces a peak voltage o2 2V at a frequency of 80 MHz. The input impedence of the oscilloscope as this simple combination of input...

Hello, I am working on the following problem: http://img155.imageshack.us/img155/2478/thevpo9.jpg I am stuck on this seemingly simple circuit problem. I've worked many Thevenin circuit problems in my introductory circuit analysis. This problem is from a new class and seems different...

Homework Statement Find the Thevenin equivalent of the circuit shown below Homework Equations Nothing but basic principlesThe Attempt at a Solution Alright, I realize that it will take some time for the attachement to be approved, but it's a really simple circuit. It has just one loop...

Homework Statement There is a non-inverting op-amp below. http://img291.imageshack.us/img291/8242/chapter5lastproblemea1.jpg The op-amp is NOT ideal. We assume that R_i\,=\,\infty, R_0\,>\,0 and A is finite. Find the general Thevenin equivalent circuit seen at the terminals...

Homework Statement Find the Thevenin equivalent at terminals a-b of the circuit below. http://img153.imageshack.us/img153/6116/chapter4problem40ef4.jpg Homework Equations v = i R, KCL, KVL, R_{TH}\,=\,\frac{V_{OC}}{I_{OC}}.The Attempt at a Solution To get R_{TH}, I removed the independent...

i have an attempted solution to a HW problem, and I want to know if it is right or wrong. Could you guys please help me out. I have attached the image as a pdf

[SOLVED] Thevenin equivalent of a half-wave rectifier Hello folks, I'm trying to wrap my head around the process of reducing a half-wave rectifier (w/ filter) with an AC input into a simple Thevenin circuit with a DC equivalent voltage. My brain seems to be stuck in "but the input is not...

Sorry for such a basic question, but I'm having trouble grasping the idea of why the Thevenin equivalent of a network (as seen from two terminals) almost always has a Norton equivalent in the form in which it has been defined. More specifically, I've been trying to work out from staring at the...