Small Transformer and Low Voltage Transformers are related but not the same thing.
Many small transformers are low-voltage transformers
Most palm-sized transformers are:
- Low power
- Low output voltage
- Used in electronics
So in practice, small size often goes with low voltage.
But size ≠ voltage
Physical size depends mainly on:
- Power rating (VA or watts)
- Operating frequency
- Core material
Not directly on voltage.
Examples:
- A small transformer can still output 230 V (e.g., isolation or signal transformer)
- A low-voltage transformer can be large if it delivers high current (e.g., 12 V, 100 A transformer)
