**This is a replay from the old podcast series lost to the internet**
Original upload date: 07/07/2020
How CDI systems work is thanks to capacitors. Capacitors are a form of batteries that can physically store energy. This is useful to ignition systems as the energy can be discharged instantaneously unlike traditional ignition coils which require time to generate and collapse a magnetic field to generate the high voltage needed for an ignition spark.
The short stronger spark produced by CDI systems greatly benefits the upper rpm range. This is not very good for low load and rpm conditions which require longer spark durations to complete combustion. Most manufacturers use multiple sparks over a short period of crankshaft rotate to combat this.
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