Electrical4u Knowledge

An electrolytic capacitor is a special type of capacitor which uses an electrolyte for achieving higher capacitance ranging from 1uF to 50mF value, unlike other capacitors. An electrolyte is a solution having a high concentration of ions in it. Aluminium electrolytic capacitor, tantalum electrolytic

What is a Ceramic Capacitor? A ceramic capacitor is the most commonly used capacitor in an electronic circuit. A ceramic capacitor is used due to its small physical size and large charge storage capability. The ceramic capacitor gets its name from its use of ceramic as a dielectric medium. We call t

Capacitance of a Cylindrical Power Cable Electrical Power Cable is a very popular example of cylindrical capacitor . In a power cable, there is a conductor at the center surrounding which there is insulating layer. Outer surface of the cable is generally covered with metallic cover which is grounded

A transformer is a device that transfers electrical energy from one circuit to another by electromagnetic induction. Transformers are widely used in power systems to step up or step down voltages , isolate circuits, and balance loads. Transformers can be classified into different types based on thei

Complex Power It is very conceptual and essential to understand. For establishing the expression of complex power , we have to first consider a single phase network that’s voltage and current can be represented in complex form as V.e jα and I.e jβ . Where α and β are angles that voltage vector and c

To derive the relations between line and phase currents and voltages of a star connected system , we have first to draw a balanced star connected system. Suppose due to load impedance the current lags the applied voltage in each phase of the system by an angle ϕ. As we have considered that the syste

Before studying electrical engineering it is essential to know that angular relation between mainly voltage and current in a system. For understanding the relation between voltage and we should first know definition of vector and go through vector algebra and vector diagram . Definition of Vector Th

There are two types of system available in electric circuit , single phase and three phase system . In single phase circuit, there will be only one phase, i.e the current will flow through only one wire and there will be one return path called neutral line to complete the circuit. So in single phase

A planar circuit is a circuit that can be drawn on a flat surface without any wires crossing each other. A non-planar circuit is a circuit that cannot be drawn on a flat surface without any wires crossing each other. Planar and non-planar circuits have different properties and methods of analysis. I

What is an Open Circuit? An open circuit is defined as an electric circuit in which current does not flow. Current can only flow in a circuit if it finds a continuous path—known as a “closed circuit”. If there’s a break anywhere in the circuit, you have an open circuit, and current can not flow. In

What is a Schmitt Trigger? A Schmitt Trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier . A Schmitt Trigger uses two input different threshold voltage level to avoid noise in the input signal.

What is ELI the ICE man? ELI the ICE man is used to remember the relationship between current and voltage in an inductor and capacitor . ELI the ICE man stands for the fact that voltage [E] leads current [I] in an inductor [L] (that’s the ELI part) and current [I] leads voltage [E] in a capacitor [C