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DS boards review
xray circuit
| Question | Answer |
|---|---|
| AC supply | supplies circuit with 220-2040 volts |
| what type of current is the AC supply | alternating current |
| master wall switch | "Double switch blade" |
| fuses | stop the connection if hazard happens |
| line voltage meter | measure incoming line voltage |
| line voltage compensator | adjust voltage to 220 volts for the rest of the circuit |
| autotransformer | adjust to get wanted voltage |
| how many coils does the autotransformer have | 1 coil |
| what kind of induction is the autotransformer | self induction |
| what do the major kvp selectors count by | 10s |
| what do the minor kvp selectors count by | 1,2,3s |
| pre reading kv meter | pre reads what the voltage is going to be |
| exposure switch | closes fire to rest of the circuit |
| exposure timer circuit | controls duration of exposure |
| mA selector | select how much to feed to the filament of the x-ray tube (3-6 Amps) |
| what is the small FS size | 0.1-1mm |
| what is the large FS size | 0.3-2mm |
| what type of induction is the step-down transformer | mutual induction |
| what happens with a step down ttransformer | increases current, deceases voltage |
| filament curcuit | entire bottom section of the x-ray tube |
| what type of induction is the step up transformer | mutual induction; increases voltage |
| diodes | keep current flowing in one direction |
| mA meter | midpoint if secondary side, connected to ground measures exact mA to make electrons |
| what side is the primary/lo voltage side | left side |
| what side is the secondary/high voltage side | right side |
| the anode is | positive (A+) |
| the cathode is | negative (C-) |
| what is the most common type of time | electronic |
| what does the AEC timer do | select ionization chambers |
| the number of x-rays produced at the target depends on | mA, target material, and square of kV |
| what is the anode made of | tungsten |
| what is the cathode made of | tungsten rhenium |
| voltage ripple for 1/2 wave | 100% |
| voltage ripple for full wave | 100% |
| voltage ripple for 3 phase 6 pulse | 13% |
| voltage ripple for 3 phase 12 pulse | 3-4% |
| input phosphor converts | xrays to light |
| photocathode converts | light to electrons |
| output phosphor converts | electrons to light |
| what is the input phosphor made of | cesium iodide |
| what is the output phosphor made of | zinc cadmium |
| what is the control path of electrons | electrostatic lenses |
| ___ is the single greatest source of acute radiation exposure in diagnostic radiology | fluoroscopy |
| brightness gain= | minification gain x flux gain |
| what is the flow of xrays | x-rays - light - electrons - light |
Created by:
rnmps