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RADT334-XRay Circuit

Review parts of the x-ray circuit

QuestionAnswer
part of the x-ray circuit that contains the kvp selector, kvp meter, exposure timer and exposure switch primary side/circuit
part of the x-ray circut that contains the mA selector, focal spot selector and step-down transformer filament circuit
part of the x-ray circuit that contains the mA meter and rectifiers secondary side/circuit
adjusts autotransformer to deliver precisely 220 volts line voltage compensator
supplies a precise voltage to the high voltage circuit autotransformer
reads the voltage that will be applied to the secondary side of the step up transformer kVp meter
filament uses this current 3 to 6 A
this is what happens to current when voltage is increased decreased
this is what happens to voltage when current is increased decreased
type of timer that has a minimum exposure time of 1/60 s and has to be reset each time exposure is made synchronous
type of timer that is the most accurate but also most sophisticated and complicated electronic
type of timer that monitors the product of mA and exposure time and terminates the exposure when desired mAs value is attained; used on falling load imaging systems mAs
type of timer that measures the quantity of radiation reaching the image receptor and terminates the exposure when the image receptor has received enough radiation to provide the required optical density AEC
most commonly used AEC ionization chamber
type of rectifiers used in x-ray imaging systems today solid-state
if positive charge is applied to the n side of the solid state rectifier then electrons____ flow will not
if negative charge is applied to the n side of the solid state rectifier then electrons _____ flow will
number of rectifiers used in half-wave rectification two
number of rectifiers used in full-wave rectification four
number of pulses per second with half wave rectification 60
number of pulses per second with full wave rectification 120
number of pulses per second with three phase power (non rectified/6 pulse) 360
number of pulses per second with three phase power (rectified/12 pulse) 720
type of generator that generates high voltage, full-wave rectified power to a higher frequency (usually 500-25,000 Hz) high-frequency
type of generator used in portable machines high-frequency
type of generator that builds up a charge then releases it with completion of the circuit capacitor-discharge
type of generator that is used to provide the highest mA setting at the shortest possible times where the computer will automatically calibrate the time of the exposure allowing consistently shorter exposures falling-load generator
voltage ripple percent for single phase half wave rectified units one hundred
voltage ripple percent for single phase full wave rectified units one hundred
voltage ripple percent for three phase, six pulse units thirteen
voltage ripple percent for three phase, twelve pulse units four
voltage ripple percent for three phase, high frequency units less than 1
X-ray production efficiency ______ with an increase in voltage ripple decreases
High frequency generators cost _____ than single phase generators more
multiplying mA and kVp then dividing by 1000 is the equation for power rating for _______. three phase and high frequency
multiplying 0.7, mA, and kVp then dividing by 1000 is the equation for power rating for _____. single phase units
Created by: hschmuck1