Base station and transformer: what they have in common

1. Step 1. Base station — is part of — Cellular network. Cells.
2. Step 2. Cellular network — is used in — Smart meter. Data transmission.
3. Step 3. Smart meter — is part of — Smart grid. Meters.
4. Step 4. Smart grid — evolved from — Electrical grid. A digital grid.
5. Step 5. Electrical grid — has part — Transformer. Transformer substations.

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