Step Response of RL Circuits

Step Response of RL Circuits When a constant voltage is suddenly applied to an RL circuit, an increasing a current goes through the conductor and creates a magnetic field that expands with the increasing current. This current will reach a maximum value, and the magnetic field stop expanding. The expanding magnetic field induces a Counter-Electromotive Force […]

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Inductance Definition

Definition of inductance

An inductor has the property to oppose any change in the current passing through it.

This property is called inductance. When a current flows through a conductor, a magnetic field is created.

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Capacitor Discharge Process

Capacitor Discharge Process.

In a series RC circuit, a capacitor does not immediately discharge after being disconnected from a power source of direct current. The capacitor voltage Vc decreases from the initial voltage on the capacitor to 0 volts in some amount of time.

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Capacitor Charging Process

The capacitor charging process has two parts

– A transient part where values of Ic and Vc varies with time. (Approximately 5 times the time constant T).
– A stable part where values of Vc and IC are constant.

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Capacitor and Direct Current

Capacitor and Direct Current.

Direct Current that varies over time, the current starts from a maximum value and decreases to 0 amperes, when there is no current flow. This happens in a very short period of time and is called “transient current”.

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Series and Parallel Resistor Reduction

Series and Parallel Resistor Reduction.

Simplifing a series resistor circuit and / or parallel resistor circuit is simple, it is only necessary to make the necessary simplifications using formulas we already know

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Power in AC circuits

Power in AC circuits.

Electric power. Electrical power on a circuit with reactive load (reactance).

How to obtain the current in a circuit having resistance and reactance.

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Electricity and structure of matter

The matter is divided into molecules, which in turn are divided into atoms. These atoms are composed of two parts: nucleus and periphery.
1- In the nucleus of the atom there are: Positive charged protons, Neutrons which as its name suggests, have no electric charge or are neutral.
2- On the periphery of the atom there are: Negatively charged electrons.

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What is an electric charge?

Electric charge.

The electron (or proton, since they have the same charge) is the basic unit of electric charge. We can therefore consider the electron as the elementary unit of electric charge.

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Electronics – Electrical Unit Definitions

Electronics – Electrical Unit Definitions

Definitions of basic measurement units in electricity and electronics. Ampere (A), Coulomb (C), Joule (J), Watt (W), Farad (F), Henry (H), Ohm (Ω), Siemens (S), Volt (V), Hertz (Hz), Radian, Angular frequency (w), Time (t)

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