Digital concept of a MOSFET Electrical switch (MOSFET) is a three terminal device that can perform two states – ON and OFF. In the…
Author: eazambuja
Capacitive displacement transducer
This post answers the question how capacitive displacement sensor works. Capacitance of a parallel-plates capacitor is determined by the formula C=εadwhere a is the…
CMOS techniques
This post covers CMOS formation techniques. There are a few CMOS formation technologies: 1. P-well process 2. N-well process 3. Twin-well process 4. Triple-well…
What are MOS devices
A MOS-device is a simplified example of a MOSFET structure (without source and drain). Let's consider how the MOS-device works. The simplest MOS-device has…
Piezoelectric transducer
This post is about how piezoelectric transducer work. Piezoelectric transducer is used to measure force, pressure and acceleration. These sensors contain a piezoelectric element…
IoT applications in industry
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…
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…
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…
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…