Principle
A gas discharge tube is connected to a vacuum pump. Applying a high voltage causes a variety of light phenomena in the tube, which are dependent on the pressure at that moment. The 0...10-kV high-voltage power supply used here (13670-93) is particularly appropriate ...
PEM (proton exchange membrane) technology refers to the type of fuel cell favoured by car makers and companies that build combined heat and power plants. The demonstration set-up depicted here produces hydrogen using the classic method by reacting hydrochlori ...
Electrical energy from solar cells supplies an electrolyser. The gases generated by the PEM electrolyser - hydrogen and oxygen - are sent directly to the PEM fuel cell. The electrical energy generated is used to drive a small motor. The solar cells can be ...
First Kirchhoff's laws are verified by measuring current, voltage and resistance in series and parallel circuits. The Wheatstone bridge circuit is used to determine unknown resistances more precisely.
Tasks
The Hall effect in thin zinc and copper foils is studied and the Hall coefficient determined. The effect of temperature on the Hall voltage is investigated.
PHYWE présente la nouvelle unité de rayons x: une technologie novatrice, haut de la page sécurité, un confort maximum !
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