Step-up Transformer vs Step-down Transformer — Difference (with Table)
Step-up Transformer vs Step-down Transformer compared side by side — a 6-row comparison table and 4 key points. Class 10 Physics, free and no sign-up.
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TL;DR: Step-up Transformer vs Step-down Transformer compared side by side — a 6-row comparison table and 4 key points. Class 10 Physics, free and no sign-up.
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The main difference between Step-up Transformer and Step-down Transformer: A step-up transformer increases voltage while decreasing current in the secondary coil. A step-down transformer decreases voltage while increasing current
Step-up Transformer vs Step-down Transformer — Comparison Table
| Basis | Step-up Transformer | Step-down Transformer |
|---|---|---|
| Primary to Secondary Turns | Secondary has more turns than primary | Secondary has fewer turns than primary |
| Voltage Change | Increases voltage in secondary | Decreases voltage in secondary |
| Current Change | Decreases current in secondary | Increases current in secondary |
| Power | Power remains same (ignoring losses) | Power remains same (ignoring losses) |
| Use | For long-distance power transmission | For household appliances and devices |
| Example | Power transmission lines increase voltage to 400 kV | Home transformer reduces 230 V to 12 V for devices |
Key Points
- Transformer equation: Vs/Vp = Ns/Np
- Step-up and step-down are complementary transformations
- Step-up transformers reduce losses during long-distance transmission
- Step-down transformers make power safe for household use