Looped Systems

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Open Looped and Closed Looped Systems

Electronic systems can be open looped or closed looped.

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Open looped systems

  • The input controls the output.
  • There is no feedback.
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Example: toaster

  • Example a toaster:
    • There is no feedback.
    • The bread will pop up after a set time even if the toast is not brown enough.
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Closed looped systems

  • The input controls the output.
  • There is a feedback loop which enables the system to make a decision.
  • This usually uses a sensor.
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Example: kettle

  • Example a kettle:
    • There is feedback.
    • A sensor will continue to detect the heat and input into the process until the water reaches a certain temperature when the kettle will turn off.

Jump to other topics

1Core Technical Principles

2Paper & Board: Specialist Technical Principles

3Timber: Specialist Technical Principles

4Metal: Specialist Technical Principles

5Polymers: Specialist Technical Principles

6Textiles: Specialist Technical Principles

7Designing & Making Principles

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