BJT transistor is a three terminal semiconductor device, based on three layers of p and n layers, with different doping concentration. BJT transistor can…

# Category: Advanced Circuit Analysis

**Advanced Circuit Analysis: Preface**

**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 non–linear 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 non–linear 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**

- Non–linear DC electric circuits.
- Magnetic circuits.
- Non–linear AC electric circuits.
- Transient processes in non–linear electric circuits.
- Electric circuits with variable parameters.
- Sinusoidal and network analysis.
- Two-point networks.
- Complex frequency.

## Single-phase circuits. Sine-wave signals.

Sine-wave signals In this post we will learn about AC circuits, magnetic circuits and transient processes in these systems, and other aspects of complex…

## 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, connected to the input source E. The input resistance in this case is Zin=EI, Zin=Rin+jXin, the input conductance is Yin=1Zin. If the Xin<0, then…

## 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. These equivalent networks…

## 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 networks

Four-terminal network is an abstract element of an electrical circuit, having four terminals - two-input and two-output. The four-terminal network is depicted below. If…

## Electronic filter

Electronic 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…