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Monthly Archive for: «February, 2012»

Why do we find electric motor drive very important?

Electric motors impact almost every aspect of modern living. Refrigerators, vacuum cleaners, air conditioners, fans, computer hard drives, automatic car windows, and multitudes of other appliances and devices all use electric motors… Read more

Feb 29, 2012 | Edvard

Capacitor banks in power system (part 1)

When a charge is delivered to a conductor its potential is raised in proportion to the quantity of charge given to it. At a particular potential a conductor can hold a given… Read more

Feb 27, 2012 | Asif Eqbal

Capacitor banks in power system (part 1)

Under the Hood of Light Detector

Detectors of electromagnetic radiation in the spectral range from ultraviolet to far infrared are called light detectors. From the standpoint of a sensor designer, absorption of photons by a sensing material may… Read more

Feb 24, 2012 | Edvard

Light Detectors - Introduction And Purpose

Voltage Instrument Transformer (VT) – Introduction

Instrument transformers are primarily used to provide isolation between the main primary circuit and the secondary control and measuring devices. This isolation is achieved by magnetically coupling the two circuits. In addition… Read more

Feb 20, 2012 | Edvard

Voltage Transformer (VT) - Introduction And Purpose

220V DC system at thermal power station

The 220V DC system supplies direct current as source of operating power for control, signaling, relays, tripping and closing of switchgears, emergency motors of most important auxiliary systems. Under normal conditions of… Read more

Feb 15, 2012 | Bipul Raman

220V DC system at thermal power station
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