PHYS 2212L Chapter Notes - Chapter Transformer: Electric Power Industry, Electric Power Distribution, Electromagnetic Induction
Document Summary
In electric power distribution systems it is important to convert a small ac voltage to a larger one or vice versa. The device used for these conversions is the transformer. Transformers are found in many electronic devices nowadays, such as television and mobile phone. A transformer is a device that changes (transforms) and alternating potential difference (voltage) from one value to another value be it smaller or greater using the principle of electromagnetic induction. A transformer consists of a soft iron coil with two coils wound around it which are not connected to one another. These coils can be wound either on separate limbs of the iron core or be arranged on top of each other. The coil to which the alternating voltage is supplied is called the primary coil or primary winding. When an alternating potential difference is supplied the resulting alternating current in the primary coil produces a changing magnetic field around it.
