X-ray tube head:
Image from: Haring J, Jansen L: Dental radiography: principles and techniques, ed 2, Philadelphia, 2000, Saunders
Components:
Glass XR tube
Step-up transformer → required to 'step-up' the mains voltage of 240 volts to the high voltage required to produce X-rays (roughly 60,000-70,000 volts or 60 to 70kV)
Step-down transformer →
Insulating oil → facilitates heat removal
Spacer cone →
Lead collimator →