Contents
Key Stage 4
Meaning
A dynamo is a device used to generate Direct electrical current.
About Dynamos
- A dynamo is just a D.C. Motor working in reverse. By spinning the motor it generates a direct current.
- Dynamos use the generator effect to generate and electrical current.
- Dynamos are used simple circuits which charge cells and batteries.
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| This diagram shows a dynamo which has a moving coil of wire rotating through a magnetic field.
Due to the split ring commutator the direction of the current remains constant at the output. |
References
AQA
- Dynamo, pages 261-62, GCSE Physics; Student Book, Collins, AQA
- Dynamos, page 225, GCSE Physics; Third Edition, Oxford University Press, AQA
- Dynamos, page 235, GCSE Physics, Hodder, AQA
- Dynamos, page 305, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Dynamos, page 97, GCSE Physics; The Revision Guide, CGP, AQA