Among all IoT applications, it’s the ones that are based in industry that are most challenging, and it is also the key factor behind…
Category: Learning
Rotating electric machines
The operating of rotating electric machines is based on the very well known laws of electric and magnetic fields. The key role in the…
What is an optical communication system
The typical optical carrier frequencies are ~ 200THz. The microwave carrier frequencies are ~1GHz. This means that optical communication systems have a larger capacity…
Step-index and grade-index fibers
This post answers the question "What is meant by step-index and grade-index fibers?". Geometrical fiber is the simplest type of fiber optics, has cylindric…
Coulomb’s law. Electric field.
Electric charge is a measure of the elementary particles that enable electrical and magnetic interactions. Electric charge, is the basis for Coulomb Law, and…
Introduction into semiconductor memory
Memory is a very important part of a computer that stores programs and data. It can be classified as non-volatile and volatile. First of…
MOSFET amplifier basics
Besides the resistive function, MOSFETs can also perform an amplification function. Let’s consider how we can obtain the amplification function from a MOSFET. Figure…
Top IoT terms and challenges
This post covers top IoT terms and challenges. IoT usage is growing rapidly. Manufacturers are creating more and more IoT devices. Consumers buy and…
Divergence theorem
The Coulomb Law and superposition principle can lead to divergence theorem which is valid for bilateral, axial and spherical charged objects. Let’s divide the…
Digital position encoder
This post covers the topic of what is a working principle of digital position encoder. A digital position encoder is a sensor that generates…