Build a dynamo yourself

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With the help of a magnet and a coil you can build a kind of dynamo yourself. Even if this should not work particularly effectively, it can still serve as an illustrative model.

Generate electricity with a magnet
Generate electricity with a magnet © Albrecht E. Arnold / Pixelio

What you need:

  • Horseshoe magnet
  • several meters of insulated copper wire
  • Voltmeter (multimeter)
  • Metal body (for example thick screw)
  • some thread to hang the magnet

A dynamo as an illustrative model

A demonstration model of a dynamo is intended to illustrate how the power generator works. You can certainly build such a functional model yourself.

  • This will certainly not be suitable for effective electricity generation, but it can also illustrate the basic principle of electricity generation.
  • The most important thing you need to build a dynamo yourself is a strong magnet.
  • You hang this over a self-wound coil made of insulated copper wire, in which electricity is then generated by the rotation of the magnet.
  • You can use a voltmeter to prove the presence of the generated electrical voltage.
    • Build a dynamo - this is how an illustrative model succeeds

    You need a visual model of how a dynamo works. The easiest way to ...

  • The coil is made by winding insulated copper wire around a metal body and connecting the two ends to a voltmeter.

Build a visual model yourself

  1. First, make the coil for the dynamo. To do this, take the insulated copper wire and wind about 100 to 150 turns on a thick screw. This screw is intended to increase the electrodynamic effect.
  2. Then strip the ends of the wire and connect them to a voltmeter. This can be a simple multimeter, for example, which you can buy cheaply in any hardware store.
  3. Then place the self-made coil on a table and switch on the voltmeter. The voltmeter must be set to measure AC voltage. With most measuring devices you have to set the switch to Volt-AC. AC is the name for alternating voltage. Feel free to select a low measuring range (e.g. B. 2 volts).
  4. Now take a thread and tie it to the magnet so that it can be easily rotated.
  5. Now hold the magnet with the thread over the bobbin so that the ends of the magnet circle around the bobbin when it is turned.
  6. Now set the magnet in a rotating motion and watch the voltage measuring device. The presence of a voltage should be clearly visible in this.

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