A Linear Variable Differential Transformer (LVDT) is a displacement transducer, used to measure displacement, based on the effect of the mutual inductances. It is…
Category: Learning
Discrete LTI systems
This post answers the question "What is discrete LTI system?". It is useful to consider discrete-time signals as a sequence of impulses. For example,…
Fourier function representation
This post covers topic of fourier representation of a function. Most signals are represented with a set of exponential functions, resulting in complex exponential…
Fourier transform for continuous-time functions
This post covers the topic of fourier transform for continuous signal. Let's consider a Fourier representation of aperiodic signals. Let’s also consider an aperiodic…
Fourier transform for discrete-time periodic function
Here we consider Fourier transform for discrete-time periodic function. Let's consider the discrete-time Fourier-representation of a function fn=1N∑-∞∞anejn2πnK, where an=1N∑-∞∞F(jw)e-jn2πNk and F(jw)=∑xne-jn2πNk-∞∞. The pair of…
LTI systems and their properties
This post covers properties of LTI system. Linear-time invariant systems, that were partially discussed before, play an important role in describing signals. Generally speaking,…
Introduction to power electronics and power circuits
In this introduction to power electronics and power circuits we will discuss energy devices and energy control. All the processes in our daily lives…
What is a power diode?
In this post we will answer the question "What is the power diode?". A power diode is a two terminal device, where one terminal…
The digital concept in electronics
The basic idea of a digital concept is discretion. The idea is to cut single values of a signal corresponding to the discrete-times of…
Boolean logic. Truth tables for logic expressions.
Digital circuits implement logic using "if-statements". The simplest logic operations are AND, OR, NOT. AND operation is represented with "*", OR operation - with symbol "+", NOT operation - with…