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| MrSleepy:
If you do decide to use a CDI type ignition coil you may find this site interesting.. http://www.sportdevices.com/ignition/ignition.htm#differences It shows the basics of how the CDI system works..and how the coil is energised by a generated 300vDC.. through a capacitor. The spark being produced by the firing of a thyristor and subsequent grounding of the primary(through the capacitor). Which may require you to add a microcontroller to obtain the required timing accuracy. Rob |
| geoff_p:
Many thanks to Rob for your link, which is most informative. And to KRV: I worked out what you are saying and realise it exactly fits the motorcycle coils I have. Where I had been trying to use these coils in 'the old-fashioned way' of interrupting a (DC) current through the primary, KRV's description makes total sense - a flywheel-magneto 'dumps' a short-duration, heavy current into the primary, which is of very low impedance. It also makes sense of why my Thai motorcycle-repairman friend, who speaks almost no English, couldn't understand my problem - we were coming from diametrically opposed views, though we didn't realise it. Again, thanks to all for your input. Geoff |
| krv3000:
no problem geoff_p glad to hellp sos for me spelling :nrocks: |
| geoff_p:
Well I tried Translate.Google.com for geordie first :D, then I realised it was just spelling. Cheers, Geoff |
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