Geoff's Challenge 2005

For year 7 of Geoff's Challenge, the theme was anything to help with Foundation Licence Training. There were three entries:

· A unit to demonstrate why fuses are needed.

· A practical for showing the effects of resistors in parallel and series

· A micro Henry meter.

Entries

Fuse Demonstrator	Resistors in Parallel and Series
Micro Henry Meter	Judging

Keeping the Scores

Keeping the scores

This year the entries were judged by popular vote, with the winning entry by a small margin being the Demonstrator that Alan had built to show the purpose of a fuse. With this unit a piece of wire is first connected across the output of a high current transformer. After some time, the wire melts from the heat generated in a rather dramatic fashion. The process is then repeated with a fuse in circuit, and the wire stays in tact, but the fuse blows. Unfortunately on this occasion, Alan could not demonstrate his unit functioning, for fear of setting off the college smoke detectors!

As usual, Tex did an excellent job of keeping the scores. Don’t forget Geoff’s Challenge for 2006.

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