Using MightyBoyEV - Shielding RFI from the Sevcon DC to DC converter.....
This Sevcon DC to DC converter is a 300 watt "potted" unit and designed for rough on-board vehicle use
The only problem is under certain charging conditioning (when driving the vehicle) if transmits a lot of RFI
Fabricating this steel enclosure (a shielded box...) solved the problem beautifully.....
Now I can use the AM radio!
Additional heatsink fins inside the enclosure keep the unit nice and cool. I have avoided using fan cooling throughout this project.
Small fans require servicing (cleaning etc) and can fail under on road conditions.