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Last Updated: July 21, 2010

AC-CDI

Inside an AC-CDI of a GY6 50cc-125cc engine. An AC-CDI is a type of ignition wherein it can be operated without a battery installed on a bike but needing a HIGH VOLTAGE GENERATOR that will charge the capacitor inside the cdi to discharge tthrough your ignition coil producing spark at the spark plug unlike, dc-cd wherein no HV generator is necessary for they have a built in converter inside.

The circuit below is from a gy6 based engine. it incorporate a pulse shaping circuit, unlike the cdi of yamaha DT125 posted here Yamaha DT125 cdi.

for more ac cdi circuits and schematic diagram click here
More Ac-cdi schematic for you...

4 comments:

Anonymous said...

can you tell me the valus of Q1 to Q7.

LEI said...

any general purpose transistor will do....2n3904 and 2n3906 shall be enough...

alberto said...

can i use this instead of the DT 125 cdi you posted?

Nathaniel Berdan said...

on what particular model of the bike you will be using this cdi.