Electronics
Ethernet History
Ethernet is the most popular and widely deployed network technology in the world. In 1973, while working on a way to link the Xerox “Alto” computer to a printer, Bob Metcalfe designed and tested the first Ethernet network. This first… Read more
Jan 25, 2011 | By Edvard Csanyi
Energy and Power
Economic advantages of power factor correction
Power supply authorities apply a tariff system which imposes penalties on the drawing of energy with a monthly average power factor lower than 0.9. The contracts applied are different from country to country and can vary also according to the… Read more
Dec 04, 2010 | By Edvard Csanyi
Metering
Megger Tests
The insulation resistance meter test method for determining the condition of electrical insulation has been widely used for many years as a general nondestructive test method. A serious limitation of this test is that its operating voltage of 500 to… Read more
Nov 26, 2010 | By Edvard Csanyi
