Capacitor discharge ignition Capacitor discharge ignition Capacitor discharge ignition (CDI) or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, turbine-powered aircraft, and some cars. It was originally developed to overcome the long charging times associated with high inductance coils used in inductive discharge ignition (IDI) systems, making the ignition system more suitable for high engine speeds (for small engines, racing engines and rotary engines). The capacitive-discharge ignition uses capacitor discharge current to the coil to fire the spark plugs. The history of the capacitor discharge ignition system can
Archaic Greece of the eighth century BC until the beginning of the fifth century BC, with the foundation of the Olympic Games in 776 BC and the Second Persian invasion of Greece in 480 BC forming notional start and end dates. The Archaic period was long considered to have been less important and historically interesting than the Classical period, and was primarily studied as a precursor to it. More recently, however, Archaic Greece has come to be studied for its own achievements. With this reassessment of the significance of the Archaic period, some scholars have objected to the term "archaic", due to