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Which ignition type stores energy in a capacitor rather than a coil field?

  • A.Inductive discharge ignition, which is the conventional arrangement and stores the energy within the magnetic field
  • B.Magneto ignition
  • C.Transistorised ignition, which uses a capacitor in place of the contact breaker and therefore stores the energy
  • D.Capacitor discharge ignition

Answer: D

A capacitor is charged to several hundred volts and dumped into the coil primary, giving a very fast rising spark. Inductive systems store energy in the coil field, which is precisely the distinction and makes the second option a correct description of the alternative. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. The shared behaviour explains why these belong together and the differences explain why both exist.

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