Alternating current Archives

What is Transistor hFE? Current Gain in a Transistor

August 25, 2024April 11, 2024 by Gul Faraz

What is a transistor hFE, current gain of a transistor

Among the various parameters used to characterize transistor behavior, one crucial factor is the forward current gain, often denoted as hFE or β.

Breaker Size Calculator: AC and DC Circuit Breaker Sizing Calculator

July 31, 2025February 4, 2024 by Gul Faraz

3 phase circuit breaker sizing calculator

Optimize safety with our Breaker Size Calculator. Tailor breaker sizing based on load characteristics. Ensure precision and reliability in your electrical system.

Complete Guide to Circuit Analysis in Electrical Engineering

February 24, 2026February 23, 2022 by Gul Faraz

This complete guide explains circuit analysis in electrical engineering, covering Ohm’s law, Kirchhoff’s laws, network theorems, AC/DC analysis, power concepts, and practical applications with clear explanations.

Diode Voltage Doubler Circuit with Tripler and Quadrupler

February 18, 2026August 9, 2019 by Gul Faraz

Voltage Multipliers are electric circuits to increase the voltage by a factor of two, three or four in case of Voltage Doubler, Tripler or Quarple respectively. The Voltage multiplier circuit uses capacitors and resistors to enhance the voltage level.

Full Wave Bridge Rectifier with Capacitor Filter Design

September 20, 2025June 3, 2019 by Gul Faraz

full bridge rectifier current flow during positive half cycle

The Bridge type full wave rectifier can convert an AC to DC by the mean of four diodes in such configuration that the output peak voltage remains equal to secondary of transformer peak. In each half cycle, a set of two diodes conduct and block the current alternately.

RLC Series circuit, phasor diagram with solved problem

August 8, 2025September 27, 2018 by Gul Faraz

RLC Series Circuit Example with solution

RLC Series circuit contains a resistor, capacitor, and inductor in series combination across an alternating current source. The behavior of components can be explained by phasor diagrams, impedance and voltage triangles.

Phasor Algebra in AC circuit Analysis: Addition and Multiplication

February 23, 2026September 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.

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.

How to Calculate Impedance Triangle: Resistance and Impedance

August 8, 2025August 28, 2018 by Shahab Yousafzai

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