Principle

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
Is  ∕ Ip 
= Np  ∕ Ns
is valid. The students should recognise from this experiment that
the ratio Is 
∕ Ip increases with increasing load, so
that Is 
∕ Ip 
≈ Np  ∕ Ns
is true for the transformer under load.

Benefits


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



Tasks

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.