Current transformation

Article no. P1376900 | Type: Experiments

10 Minutes
10 Minutes
grades 7-10 , grades 10-13


When very high current strengths are required on a technical scale, e.g. for welding equipment or electric smelting furnaces, then so-called heavy current transformers are used. Their secondary coils have only a few turns of large diameter wire.
In the case of an ideal transformer under load, the primary and secondary performances are equal, so that I ∕ IN ∕ Ns is valid. The students should recognise from this experiment that the ratio I ∕ Ip increases with increasing load, so that I ∕ I ≈ N ∕ Ns is true for the transformer under load.


  • No additional cable connections between the building blocks needed - clear arragned and quick setup
  • Contact saftey due to puzzle blocks system
  • Corrosion-free gold plated contacts
  • Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside


How does a transformer perform under load?

Set up a model of a transformer and use it to examine which conformity to law is given when the transformer is under load.


File name
File size
File type
(en) Experiment guide
p1376900e .pdf
File size 0.33 Mb
(de) Versuchsbeschreibung
p1376900_de .pdf
File size 1.21 Mb
(es) Versuchsbeschreibung
p1376900_es .pdf
File size 1.20 Mb
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