Jack Willepotte
Mind Map by Jack Willepotte, updated more than 1 year ago
Jack Willepotte
Created by Jack Willepotte about 4 years ago


Mind Map on Transformers, created by Jack Willepotte on 02/02/2016.

Resource summary

1 How They Work
1.1 (BASIC) A transformer needs an alternating current to create a changing magnetic field This changing magnetic field causes a changing voltage in a coil.
1.2 Primary coil attached to AC supply
1.2.1 Alternating current pases through the coil which is wrapped around an iron core This changing current produces a magnetic field This causes a changing voltage in the secondary coil In turn causing an AC in the circuit attached to the secondary coil
2 These change the voltage of an AC supply if the transformer increases voltage its a "step up" if it decreases voltage its a "step down". They cannot work with a DC supply.
3.1 There is no electrical connection between primary and secondary coils.
3.1.1 Transformers only work if AC is provided to there primary coil if DC was supplied there would be no current in the secondary coil As current in the primary coil increases or decreases steadily there is a constant voltage caused in the secondary coil As voltage in the primary coil reaches its maximum the voltage in the secondary coil is at its weakest (zero)
Show full summary Hide full summary


Test 2 Bishop 2nd year
Analisa Olivarez
Macbeth Scene Summaries
Atoms, Protons, Neutrons & Electrons quiz
AS Unit 2 Physics Flashcard Deck
Callum McClintock
Biology AQA 3.1.3 Absorption
Main People in Medicine Through Time
Holly Bamford
F211- Module 1 Cells, exchange and transport
GCSE History – The early years and the Weimar Republic 1918-1923
Ben C
Using GoConqr to study History
Sarah Egan
Biology - B2 - AQA - GCSE - Exam Style Questions
Josh Anderson
Biology - B1 - AQA - GCSE - Keeping Healthy and Defending Against Infection
Josh Anderson