Make an electromagnetic bell with an easy way.
It runs with AC current.
AC current's magnetical effect causes vibration on the magnets.
This vibration rings the bell.

MATERIALS:

- Bell of bicycle
- Isolated cupper wire
- Push button
- 2 small magnets
- Anti magnet piece of tin
- Nail
- AC power supply (9-12 V)
- 1 piece of wood


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