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Shahab Yousafzai

Shahab Yousafzai is a professional electrical engineer, who has a history with the field since 2008. He is happy to share his experience and thoughts over the forum. He is interested in Power Electronics, Analog Electronics, and Electric Machines.

Depletion Region formation in PN Junction diode

August 7, 2025December 9, 2018 by Shahab Yousafzai
PN Junction Diode

At the time of developing the PN junction diode, the depletion region is formed. Where free electrons and hole cross the conjunction between P- and N-region and recombine.

Categories Electronics Engineering Articles and Tutorials Tags diode Leave a comment

Power Electronics Handbook by Muhammad H. Rashid

August 8, 2025September 18, 2018 by Shahab Yousafzai
Power Electronic Handbook by Muhammad H. Rashid 4th Edition

This handbook is a textbook for power electronics Starting from the electronics devices like Diodes, Transistors, SCR and so on. Then Muhammad H. Rashid explains its applications like DC-DC, DC-AC, AC-DC, AC-AC converter.

Categories Basic Electrical and Electronics Engineering Book PDF Tags Electronic Devices, Power Electronics Leave a comment

Phasor Algebra in AC circuit Analysis: Addition and Multiplication

August 8, 2025September 13, 2018 by Shahab Yousafzai
Parallelogram law for vector / phasor addition

Phasor diagram in an AC circuit analysis is to represent the phase angle i.e. leading and lagging effect through vector representation. Phasor algebra, polar form, and complex number conversions are also explained.

Categories Electrical Circuit Analysis in Electrical Engineering Tags Alternating current Leave a comment

The First course on Power Electronics and Drives

August 8, 2025September 6, 2018 by Shahab Yousafzai
The first course on power electronics and drive by Ned Mohan and Mnpere

The author Ned Mohan tried his best to prepare students for industries by providing a broad and depth knowledge of power electronics by giving the gift of “The first course on Power Electronics and Drive”.

Categories Basic Electrical and Electronics Engineering Book PDF Tags Electronic Devices Leave a comment

Power Factor in an AC circuit Explained with Power Triangle

August 8, 2025September 2, 2018 by Shahab Yousafzai
https://electric-shocks.com/wp-content/uploads/2018/09/Average-Power-in-AC-circuit-and-the-role-of-power-factor.jpg

Power Factor (PF) play an important role in average power dissipation in an ac circuit. PF leads to the concept of three different real, reactive and apparent power, which is better explained by Power triangle.

Categories Electrical Circuit Analysis in Electrical Engineering Tags Alternating current, capacitor, Electrical Inductor, Resistors 1 Comment

How to Calculate Impedance Triangle: Resistance and Impedance

August 8, 2025August 28, 2018 by Shahab Yousafzai
current is leading in inductor

Capacitor and inductor oppose current in AC circuit because of inertia of electron motion, which is called capacitive and inductive reactance respectfully.

Categories Electrical Circuit Analysis in Electrical Engineering Tags Alternating current, capacitor, Electrical Inductor, Resistors Leave a comment

Difference between Alternating Current and Direct Current

August 8, 2025August 25, 2018 by Shahab Yousafzai
Difference between Alternating Current and Direct Current

Alternating current (AC) is the type of electrical current which changes its direction and magnitude every moment.

Categories Electrical Circuit Analysis in Electrical Engineering Tags Current Source, Voltage Source Leave a comment

Inductor Charging and Discharging in RL Circuit Analysis Equations

August 8, 2025August 20, 2018 by Shahab Yousafzai
LR circuit analysis

In RL series circuit, during the inductor charging phase, the voltage across the inductor gradually decrease to zero and the current through the inductor goes to the maximum in five-times constant (5 taus).

Categories Electronics Engineering Articles and Tutorials Tags Electrical Inductor 6 Comments
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