> Is the 300V to charge the capacitor to be discharged into the ignition
> coil? That seems a lot of power just for the spark.
>=20
> How many cylinders your CDI will ignite? I once designed a CDI using a
> small 1 cubic cm ferrite transformer switched by a single MOSFET. I
> don't remember the details, but it used much less power.

You do need to have a fair amount of power available to recharge the capaci=
tor in time for the next cylinder firing. 20W would be a minimum for any so=
rt of sport vehicle, and I wouldn't consider his 50W unreasonable.
--=20
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