MEDRADSC 3G03 Lecture Notes - Lecture 2: Christmas Lights, Series And Parallel Circuits, Electric Potential Energy
23 Oct 2017
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Principle parts of an x-ray system: the x-ray tube, the x-ray generator, control panel (operating console, transformer assembly, low-voltage transformer, high-voltage transformer (220- What is a generator: converts mechanical energy into electrical energy by definition, modifies incoming energy to meet requirements of the x-ray tube. We require incoming electrical energy in the x-ray tube: (thermal ionic emission) electrons are boiled off the filament shoots electrons across the tube. The generator contains a different circuit for each of these functions: filament circuit, high voltage circuit (draws them across the x-ray tube) Valence energy bands: determines conduction properties, the closer the valence energy band is to the outermost orbital electron shell (of an atom), the more likely it is to permit electron flow easily, copper/gold are good conductors. Conduction bands: refers to presence of free electrons beyond the valence band of an orbital shell, able to move freely from one orbital conduction band (of one atom) to another.
