What type of systems can a CDI ignition be designed for?

A CDI (Capacitor Discharge Ignition) system is versatile in its design and can indeed be configured to work with both AC and DC electrical systems, which is why the correct answer is both AC and DC systems.

CDI systems operate by charging a capacitor and then discharging it to produce a high-voltage spark at the ignition coil. This mechanism allows for efficient energy use and effective ignition timing, which is crucial for optimal engine performance.

In AC systems, particularly in smaller engines like motorcycles, the CDI unit often draws its power from the alternating current generated by the engine's stator. Conversely, in DC systems, a battery provides a stable source of voltage, allowing the CDI to function independently of engine RPM.

The ability to adapt to both types of systems enhances the versatility of CDI technology, making it suitable for various applications across different engine types. This design flexibility is essential for manufacturers like Yamaha, who may utilize CDI systems in a wide range of products.