Electronic halogen transformer, round 85 mm, 230V to 12V, 35 - 105W : Amazon.co.uk: Everything Else
Dimmable Electronic Transformer 20-105 W for Halogen No Worry for Flattening Constant Output Voltage / Overvoltage / Short Circuit Protection (Low Voltage) : Amazon.de: DIY & Tools
Elektronischer Konventer Mini Trafo Transformator für Halogen 20W dimmbar : Amazon.de: Baumarkt