Help with Modeling Circuits Using Sedra/Smith Book

[Lanot]

Hi

A year ago I took an Electronics course using https://www.amazon.com/dp/0805302859/?tag=pfamazon01-20 book.

So few days ago I realized that I didn't remember anything about the subject and then started studying again from the ground up and chose the Sedra/Smith Microelectronics book for the task. So in this book I stumbled upon a different way of modeling the circuits, like this one:

http://img42.imageshack.us/img42/5637/diodecircuit.png

My question is: How do I rewrite this kind of circuit in a closed loop manner? The other book that I mentioned usually provided the closed loop circuit, so it was a trivial task to analyze them. But this one I have no idea, and the introductory chapter doesn't mention anything about it...

Thanks in advance.

 

[vk6kro]

This sort of thing?

http://dl.dropbox.com/u/4222062/diode%20problem.PNG

 

[Lanot]

So you're saying that I must plug all the voltage sources of my circuit to that GND? And how about the other GND in that picture? the Potential Difference will be calculated between the point after the 10k resistor and the the junction between the 2 voltage sources and the other diode?

 

[vk6kro]

So you're saying that I must plug all the voltage sources of my circuit to that GND? And how about the other GND in that picture? the Potential Difference will be calculated between the point after the 10k resistor and the the junction between the 2 voltage sources and the other diode?

Yes.
The other terminal of voltage sources shown like this is earthed, and all Earth's can be considered joined together.

The diagram in the book actually shows the components laid out according to the potentials at various points in the circuit, relative to earth.

You may get a surprise when you work out what V is.

 

[Lanot]

Excellent!

Thank you so much.