Scientist and inventor – Mihailo Pupin
Mihailo (Mihailo Idvorsky) Pupin was born in Idvor, Banat, October 9, 1854. Received his academic education at Columbia College, New York, and his scientific education at the universities of Cambridge, England,and Berlin, Germany. Obtained his… Read more
Apr 11, 2011 | Edvard
Switchboard Construction Basics For Engineers
Power distribution systems are used in every residential, commercial, and industrial building to safely control the distribution of electrical power throughout the facility. Most of us are familiar with the power distribution system found in… Read more
Apr 09, 2011 | Edvard
Tesla’s view on war
Tesla was opposed to wars in general. Nikola Tesla did devise protective measures that would prevent wars. Tesla found exceptions in some wars and some justifiable situations. Tesla envisioned that more terrible weapons were going… Read more
Mar 25, 2011 | Edvard
Protective Grounding Requirements
Each region shall implement procedures to ensure the adequacy of protective grounds and shall periodically review grounding practices at each facility to determine the proper size, length, and number (if parallel grounds are required) of… Read more
Mar 19, 2011 | Edvard
Tesla’s death, New York Times 1943
Tesla died alone in the hotel New Yorker of heart failure, some time between the evening of January 5 and the morning of January 8, 1943. Despite selling his AC electricity patents, Tesla was essentially… Read more
Mar 11, 2011 | Edvard
How circuit breaker trip unit works?
In addition to providing a means to open and close its contacts manually, a circuit breaker must automatically open its contacts when an overcurrent condition is sensed. The trip unit is the part of the… Read more
Mar 10, 2011 | Edvard
Calculating lightning strike distance
Return stroke current magnitude and strike distance (length of the last stepped leader) are interrelated. A number of equations have been proposed for determining the striking distance. The principal ones are as follows: S =… Read more
Mar 09, 2011 | Edvard
Early years of Nikola Tesla
Nikola Tesla was born “at the stroke of midnight” with lightning striking during a summer storm. He was born in Croatia in the Austro-Hungarian Empire. The midwife commented, “He’ll be a child of the storm,”… Read more
Mar 05, 2011 | Edvard
How to improve the power quality with harmonic filters
In electrical plants the loads draw from the network electric power (active) as power supply source (e.g. personal computers, printers, diagnostic equipment, etc.) or convert it into another form of energy (e.g. electrical lamps or… Read more
Mar 01, 2011 | Edvard
Protection Relay – ANSI Standards
In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or circuit breaker). These types of devices protect electrical systems and components… Read more
Feb 22, 2011 | Edvard
Technology Innovation Is Everybody’s Business!
For close to 10,000 years, science and technology have been at the heart of economic growth and social prosperity. From the agricultural revolution to the information revolution, advances in society have been underpinned by new… Read more
Feb 18, 2011 | Edvard
Electrical Engineering Job – How to Find It?
Finding a job is not always as easy as expected. This article will list a few places to look for jobs in the field of electrical engineering. Contact electrical engineering firms in your area. Even… Read more
Feb 09, 2011 | Edvard
AC Vs. DC
What’s this thing about AC anyway? A little history lesson might be in order. It all started when Edison built the first incandescent bulb and the power station to light it. A big disadvantage of… Read more
Feb 08, 2011 | Edvard
Electrically Held Contactors – Siemens
Most lighting and heating applications require a contactor to control the loads. One type of contactor is an electrically held contactor, which is similar to a magnetic starter. Unlike a magnetic starter, however, a lighting… Read more
Feb 05, 2011 | Edvard
The Advantages Of Maintaining A High Power Factor
A high power factor eliminates penalty dollars imposed when operating with a low power factor. For many years, most utilities demanded a minimum of 85% power factor as an average for each monthly billing. Now… Read more
Feb 03, 2011 | Edvard
