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Autonomous Vehicle Challenge
Steven, 8/30/2010

Two driverless and solar power vans have departed from Italy on their way to China via the silk road. During the 13,000 kM trip the vans will drive themselves on standard roads. The hope is that this will help to prove the viability of using current technology to enable autonomous vehicles on public roads.

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Ultra Low-loss Amorphous Metal Transformer from ABB
ABBman, 8/20/2010

Amorphous Metal Distribution Transformers (AMDT) from ABB represent the ultra-low loss design solution,  delivering the highest efficiencies. They are designed with a unique alloy whose structure of metal atoms  occurs in a random pattern.

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More Efficient Solar Power For Batteries
SolarCharger, 7/31/2010

University of southern California researchers demonstrate a more effective use of graphene solar panels. Could you imagine people powering their cellphone or music/video device while jogging under the sun?

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Getting Started with Patents
Steven, 7/22/2010

If you have a great idea or invent something the last thing you want is someone to steal the idea. One of the things you can do is protect the intellectual property of on the idea by using patents.

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LSF or LSZH Cable
Steven, 7/21/2010

I've noticed that sometimes there is confusion between LSF and LSZH cable sheaths and what the differences are. In essence the difference is that both give lower smoke and fumes compared to PVC and in addition LSZH emits no halogens. I have started a Wiki page going into a...

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MIT OpenCourseWare
Steven, 7/8/201200

MIT OpenCourseWare, makes the materials used in teaching all MIT subjects available on the Web, free of charge, to any user in the world.

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E-Ink
Steven, 7/6/201200

Before the technical, some general information. E-ink display are found in a lot of e-readers, some mobile phones and similar devices and the intent is to provide a reading experience closer to that of ink on paper than conventional LCD displays deliver. E-ink screens are not...

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Making myElectrical - update 2
Steven, 6/21/2010

Continuing the theme of documenting how the site is (has) changed, here is update 2. This update highlight a few of the changes which have taken place over the past few weeks.

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Meeting room of the future
Steven, 6/16/2010

The IET site has a video of a visit showing of a high tech meeting room developed at Napier University in Edinburgh. It a good demonstration of innovative use of technology, genuinely interesting to watch.

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Maximum Demand for Buildings
Steven, 6/15/2010

Estimating maximum demand is a topic frequently discussed. Working out how much power to allow for a building in my experience a very subjective . Allowing too much power results in additional equipment, increased space requirements, greater system losses and extra cost. On...

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MIT OpenCourseWare, makes the materials used in teaching all MIT subjects available on the Web, free of charge, to any user in the world.

Posted by Steven 08-Jul-2010
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Wiki: latest page updates

FAS, editied by Faiz Ahmad,    2d ago
IDS, editied by Faiz Ahmad,    2d ago
SIS, editied by Faiz Ahmad,    2d ago
LSI, editied by Faiz Ahmad,    2d ago
SSI, editied by Faiz Ahmad,    2d ago
CCTV, editied by Faiz Ahmad,    2d ago
ACS, editied by Faiz Ahmad,    2d ago
SMS, editied by Faiz Ahmad,    2d ago
Tan Delta, editied by Faiz Ahmad,    2d ago
BS 7671 Cable Voltage Drop, editied by Mullac,    5d ago

The windings of many smaller transformers are protected by restricted earth fault (REF) systems.

The illustration shows the principal of REF protection. Under normal conditions and by application of Kirchhoff’s laws the sum of currents in both current transformers (CTs) equals zero. If there is an earth fault between the CTs then some current will bypass the CT's and the...

Last updated: 05-Oct-2009

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