Digital camera and transformer: what they have in common

1. Step 1. Digital camera — has part — Photographic flash. The flash lights the shot when it is dark.
2. Step 2. Photographic flash — has part — Capacitor. Energy is stored in a capacitor.
3. Step 3. Capacitor — is part of — Defibrillator. The energy of the shock is stored in a capacitor.
4. Step 4. Defibrillator — has part — Transformer. Stepping up the voltage.

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