Let us consider the circuit analysis method, using a tree structure. For example, we take a tree of the graph and arbitrary link. They…

# Category: Circuit Fundamentals

**Circuit Fundamentals****: Preface**

**Aim of the study element**

To explain basic concepts of circuit theory, and explain techniques needed to analyse simple linear and non-linear circuits.

**Learning outcome**

Having successfully completed this element you will be able to:

- Understand the building blocks of circuit theory.
- Understand the key concepts in circuits, such as impedance, current, power, voltage.
- Analyse ideal simple analogue circuits.
- Analyse circuits using complex numbers.
- Build and undertake measurements for simple analogue circuits.
- Select and use propper mathematical tools for the solution of problems in circuits.

## Equivalent voltage and current sources

Equivalent voltage and current sources are equivalent - if you are replacing one with another and the rest of the circuit response is the…

## Two-node scheme transformations

Let us consider the circuit in Figure 27a. Converting voltage sources to the current sources we achieve the scheme in Figure 27b. All the…

## Sources shift in an electric circuit

Calculation of the electric circuit can be simplified by moving voltage and current sources. How to move them along the circuit is described here.…

## Thevenin’s and Norton’s Theorems

Now we will study theorems which help to determine parameters of only a part of an electric circuit, for example current, voltage and power…

## Quiz

Solve these problems and submit your answers down in the comments. Problem 1. Find equivalent resistance Req for the network of resistances in Figure…