P–n junction and boiler: what they have in common

1. Step 1. P–n junction — is used in — IGBT. A transistor structure with p–n junctions.
2. Step 2. IGBT — is part of — Inverter. The power switches of inverters.
3. Step 3. Inverter — is part of — Solar power station. Inverters convert direct current into alternating current.
4. Step 4. Solar power station — is a kind of — Power station. A power station.
5. Step 5. Power station — includes — Thermal power station. A kind of power station.
6. Step 6. Thermal power station — has part — Boiler. Boilers.

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