Equipment
What factors can you select on the operating console?
kVp, mA, and exposure time
What are the three main parts of the x-ray imaging system?
X-ray Tube, Operating Console, High Voltage Generator
The step-down transformer is located in which circuit?
Filament
How many windings does the autotransformer have?
1
Which generator has the most constant voltage across the x-ray tube?
High frequency generators
When will an AEC imaging system terminate exposure?
When sufficient radiation reaches the IR
The first component to receiver power in the x-ray circuit is the...
Autotransformer
Which circuit will provide electrons for the cathode?
Filament
What is the common voltage that x-ray imaging systems operate on?
220 V
360
In modern imaging systems, what is used to rectify AC to DC?
Solid state semiconductors
How many times does the step-up transformer increase voltage?
500 to 1000
What x-ray factor does thermionic emission at the filament rely on?
mA
Which direction does current flow in the x-ray tube?
Cathode to anode
Current in the x-ray tube flows during which part of the cycle in rectified waveforms?
Positive only
The operating console has what kind of circuits? High voltage, low voltage, or both?
Low voltage
On the tube circuit side, along with the step-up transformer, what else is included?
Timers and rectifiers
The mAs timer provides what setting?
Maximum mA at minimum time
What is the most noticeable difference in the waveform between the primary and secondary sides of a high voltage transformer?
The amplitude
Which circuit heats the filament to release electrons by thermionic emission?
What is the most accurate timer?
Electronic
Which component will correct variations in voltage distribution to the x-ray imaging system?
Line voltage compensator
What is the term for electrons repelling additional electrons due to there being no more space in the focusing cup making it harder for more to be emitted from the filament?
The space charge effect
What does a line compensator actually do in the circuit?
Measure the incoming voltage and then adjust it to 220 V
The high voltage (tube) circuit