The transmission line theory, in contrary, works in conditions where the transmission line is equal to a part of the signal wavelength. The transmission…
Category: Learning
MOSFET small-signal model and equivalent circuit
As we discussed before, the output voltage for the MOSFET amplifier is non-linear towards the input voltage: vout=VS-K(vDS-VTh)22RL. Figure 1 shows the MOSFET amplifier…
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…
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…