Use of Transformers

• Use of Transformers

  • Transformers have a number of roles:
  • They are used to increase the potential difference of electricity before it is transmitted across the national grid
  • They are used to lower the high voltage electricity used in power lines to the lower voltages used in houses
  • They are used in adapters to lower mains voltage to the lower voltages used by many electronic devices
• • The type of current produced in power stations is alternating current (AC) which is transferred through to homes via the National Grid
  • Transformers are used to increase and decreases the potential difference of the AC electricity before and after transmission across the National Grid
  • Step-up transformers are used to increase the potential difference from the power station to the transmission cables
  • Step-down transformers are used to decrease the potential difference, to a much lower value, from transmission cables for domestic use (houses, offices, shops)
• Diagram showing transformers