# 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.

## 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…

## 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…

Circuit Fundamentals

## 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…