Ec-1 Wind Your Own Transformer


To illustrate the principle of a transformer.


  • Variac
  • Specially built transformer
  • 6 V globe
  • Wrap around wire

Wind Your Own Transformer 1 Wind Your Own Transformer 2

Transformer and Coil with 6V Light Globe


a) Principle of Physics illustrated

Faraday's Law of Induction etc.

b) Procedure

The primary coil is energised with 100V a.c. from the portable variac. A long length of thin wire connected to a 6V bulb is slowly wound around that part of the core which projects from the primary coil. The lamp initially unlit steadily increases in brightness as more turns are added.