What component is responsible for adjusting kVp in an x-ray tube?

The autotransformer is an essential component in an x-ray tube that adjusts the kVp (kilovolt peak) settings. It allows for precise control of the voltage supplied to the x-ray tube during an imaging procedure. By varying the number of turns in the coil through which the current flows, the autotransformer adjusts the voltage output. This adjustment is critical because kVp directly influences the energy of the x-ray photons produced, which affects both image quality and the radiation dose to the patient.

While other components like the filtration system and transformers play important roles in x-ray production and image quality, they do not specifically adjust the kVp. The rectifier's role is to convert AC (alternating current) to DC (direct current), which is necessary for the operation of the tube, but it does not control the kVp settings themselves. Thus, the autotransformer's function in modulating the voltage is key to setting the appropriate kVp required for optimal imaging.