Anode grounded
  • Classical technical design for high power
  • HT polarity: (-) minus
  • Anode at ground potential
  • Water cooling
  • Filament at high potential
  • X-ray window near to focal spot
Cathode grounded
  • Low power X-ray tube design
  • HT polarity: (+) plus
  • Anode at high potential
  • Cooling through electrically insulating
  • material (e. g. oil or ceramic)
  • Filament at ground potential
  • X-ray window positioned outside of the HT field
Bipolar
  • Preferable designed for higher voltages
  • HT polarity: (-) minus and (+) plus
  • Anode and cathode at high potential
  • Cooling through electrical insulating
  • material (oil or ceramic)
  • Filament at high potential
  • X-ray window positioned outside of the HT field