Posts Tagged ‘alternating current’

How to Use a Capacitance meter?

March 2nd, 2015 | 1 Comment | Posted in Others
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Last time, Nasir told us about measuring current with ammeters, today here’s an article about capacitance meter…

What is a Capacitor?

A capacitor is a bi terminal charge storing device which stores the electric charge between its two conducting plates which are separated by a resistance. This is the basic intro of a capacitor which summarizes its working in the shortest possible way. It is necessary to know about the functioning and working of a capacitor before going into the details of a Capacitance meter.

Capacitor stores energy but it is not as efficient as other energy storing devices like batteries etc. The main reason for this is that it discharges quite quickly and that is one of the reasons that it is quite useful in applications where rapid energy is required.

How to Use a Capacitance meter 1
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What is an Inverter?

October 31st, 2013 | 3 Comments | Posted in Electrical distribution
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New series of tutorial by our mamber Nasir! This time, let him tell you about inverters. Here’s the 1st part.

Introduction

An inverter is an electrical device which converts DC voltage, almost always from batteries, into standard household AC voltage so that it is able to be used by common appliances. In short, an inverter converts direct current into alternating current.

Direct current is used in many of the small electrical equipment such as solar power systems, since solar cells is only able to produce DC.

They are also used in places where a small amount of voltage is to be used or produced such as power batteries which produce only DC. Other than these fuel cells and other power sources also produce DC.

What is an Inverter

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Centre Tapped Transformer

June 27th, 2013 | 12 Comments | Posted in Electrical distribution
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Here’s the 6th part Nasir’s tutorial on transformers. Enjoy and leave your impressions. Don’t forget you can send your own articles, works, reviews or tutorials; just send us a mail!

Working Principle of a Centre Tapped Transformer

A Centre Tapped transformer works in more or less the same way as a usual transformer. The difference lies in just the fact that its secondary winding is divided into two parts, so two individual voltages can be acquired across the two line ends.

The internal process is the same, which is when an alternating current is supplied to the primary winding of the transformer it creates a magnetic flux in the core, and when the secondary winding is brought near, an alternating magnetic flux is also induced in the secondary winding as the flux flows through the ferromagnetic iron core and changes its direction with each and every cycle of the alternating current. In this way an alternating current also flows through the two halves of the secondary winding of the transformer and flows to the external circuit.

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