Hi sorry for my english
I built my own CDI to motorbike 600cm, i use 1.5uF capacitor to strong spark, if i use 0,47uF capacitor voltage wil be higher and curent wil be less. Don't use converter when igniton coil is disconnected or add resistor obout 100kohm instead ignition coil

schemhttp://www.ust.tke.pl/wilk/przet.JPG

This is mesure for 0,75uF cap and V=12V VCC
t [ms] Vcap [V] I[A]
8 400 0,45
7 400 0,75
6 400 0,8
5 380 0,9
4 340 1,0
3 330 0,95
2 280 0,902 ms = 500Hz = 30000 rot/min
1 210 0,851ms = 1000Hz = 60000 rot/min


regard's



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