Aim of the study element

To teach students to characterise non-linear circuit and use sinusoidal analysis, to understand  transition processes, apply nodal analysis and conduct variable current circuit investigation or design.

Learning outcome

Having successfully completed this element you will be able to:

• Successfully analyse nonlinear circuits of constant and variable currents.
• Analyse and design magnetic circuits, to understand the impact of magnetic components, and make calculations of their parameters.
• Use already known basics about circuits from the first module to create complex circuits with magnetic and nonlinear effects.
• Analyse and characterise transient responses of a circuit with complex mathematical tools.
• Understand functions of the circuit components like filters, transformers and others.
• Measure and calculate circuit properties and characteristics.

Covered topics

• Nonlinear DC electric circuits.
• Magnetic circuits.
• Nonlinear AC electric circuits.
• Transient processes in nonlinear electric circuits.
• Electric circuits with variable parameters.
• Sinusoidal and network analysis.
• Two-point networks.
• Complex frequency.

The complete content for this module will be posted here soon.

## Introduction

Sinus-wave signals. In the previous module we determined resistant circuits, learned how to calculate resistive circuit parameters and their energy characteristics. In this module…

## The term of complex conductance. Active and reactive power

Complex conductance Y is the value, reverse to the complex resistance Z, where Y=1Z=ye-jφ. Complex conductance is measured with Siemens  1Ohm. Y=1R+jX=R-jXR2+X2=RR2+X2-j XR2+X2 Ohm Law’s using the conductivity…

## Two-terminal networks in the AC circuit

Let's consider a passive two-terminal network (Figure 1), connected to the input source E. The input resistance in this case is Zin=EI,Zin=Rin+jXin, the input conductance is Yin=1ZinIf…

## Equivalent two-terminal network

Equivalent two-terminal transformations are transformations that lead to the simplification of complex two-terminal networks with the smallest amount of L, C and R elements.…

## Magnetically related networks – transformers

Often networks contain magnetic elements, for example coils, that can create magnetic induction in the other close placed coils, generating the self-induction EMF. Let's…

## Four-terminal circuits

Four-terminal is an abstract element of an electrical circuit, having four terminals - two-input and two-output. The four-terminals are shown in the scheme in…

## Electrical Filters

Electrical filters are four-terminal devices that serve to transfer electrical current between the source and load in a certain frequency range. The transparency range…

## Three-phase circuits

Three-phase circuits of voltage supplies are the three connected voltage supplies, with the same magnitude of amplitude and frequency, but shifted to 120 grad.…

## Periodic non-sinusoidal currents in linear circuits

Periodic non-sinusoidal currents and voltages are those that change in a periodical non-sinusoidal way. It may happen when the source is generating non-sinusoidal signals, and…