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Old 26-06-2014, 15:54   #204
heero_yuy
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Join Date: Mar 2009
Location: Worthing West Sussex
Age: 68
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heero_yuy is seeing silvered starsheero_yuy is seeing silvered starsheero_yuy is seeing silvered starsheero_yuy is seeing silvered starsheero_yuy is seeing silvered stars
heero_yuy is seeing silvered starsheero_yuy is seeing silvered starsheero_yuy is seeing silvered starsheero_yuy is seeing silvered stars
Re: What have you fixed lately?

The ignition unit on the gas hob. A legacy of it having had cola spilled in it was the circuit board inside the ignitor box arcing across. Cleaned that up but I've never been happy with the way it works: You press the button but only get one spark when you release it. Very simple circuit charges up a capacitor and then the switch dumps that into the spark transformer that has 4 outputs.

What I really want is a stream of sparks all the time the button is pressed. With the addition of a Thyristor and Diac (two kinds of electronic switch) resistor and capacitor it now does just that.
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