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Dan Ryan's Articles

Dan Ryan works for Gil-lec, an Electrical Wholesaler based in the UK. They supply electrical goods such as extractor fans, consumer units, chrome switches, fire alarms and other electrical goods at competitive prices. They also supply to contractors all over the UK and have been voted the UK's Best Electrical Wholesaler for the fourth year running.

What is LED?

Posted on 9/14/2013 8:06 AM By Dan Ryan

Light Emitting Diodes (LED ) are increasing gaining favour in both the domestic and commercial sectors; due to their efficiency, sustainability and durability.  LED are semiconductor devices, which work on the movement of electrons.  This movement of electrons converts the energy supplied to the LED into protons, producing light. This process is called electroluminescence. Depending on the band of energy used by the semiconductor in the device, an LED can be a number of different colours and can be used in a variety of ways, from creating the infra-red beam in your TV remote, to providing white light for illuminating your home.

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Switchboard - Forms of Internal Separation

IEC 61439 'Low-voltage switchgear and controlgear assemblies', specifies standard arrangements of switchboard (call forms of internal separation). The...

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It's been a busy few months on different projects or busy couple of decades depending on how I look at it. I can say that on the odd (frequent) occasion...

IEC Reference Designations

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MIT OpenCourseWare

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

UPS Sizing - Rules of Thumb

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Motor Starting - Introduction

Motor starting and its associated problems are well-known to many people who have worked on large industrial processes. However, these things are, of course...

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