X Ray Circuit Vocabulary Flashcards

Includes the console elements and other low voltage circuit elements including:  Line monitor/Line compensator, Autotransformer, kVp selector, Timing circuit, kVp meter, mA selector

Includes:  Step-up (high voltage) transformer, step-down (filament) transformer, rectifiers, mA meter

Another way of separating the circuit parts instead of high/low voltage.  This portion includes:  Line compensator/line monitor, autotransformer, timing circuit, PRIMARY side of the step-up transformer

Another way of separating the circuit parts instead of high/low voltage.  This portion includes:  SECONDARY side of the step-up transformer, rectifiers, x-ray tube

Another way of separating the circuit parts instead of high/low voltage.  This portion includes the items that deal with the creation of mA which comes from the electron cloud created at the filament:  mA selector (rheostats, precision resistors), filament transformer (step-down)

Works with the autotransformer to make sure the incoming voltage is exactly what it is supposed to be, i.e. 220V

A single winding and single core, this still follow transformer law.  It's the first transformer in the x-ray circuit and provides electricity to both the step-up and step-down transformers.  Is capable of moving voltage up or down but only a limited amount

A pre-meter that displays what your kVp will be after the exposure is made

Displayed on the low voltage side but found on the high voltage side.  This meter reads the actual current (mA) as it moves from cathode to anode

Also called the mA selector.  This precision resistors refine the current so that the filament transformer will produce the desired mA station in the x-ray tube

Moves voltage down and current up.  High current (quantity) is needed at the filament to create the electron cloud which will be sent to the anode

Moves voltage up and current down.  High voltage is needed to provide kinetic energy to the electrons which will be moved from cathode to anode

The exposure timer, electronic timers can use a wide range of intervals and make exposures as fast as 1 ms.

Change AC to DC.  Must be located between the step-up transformer and x-ray tube because transformers require AC and the x-ray tube requires DC.

Has 100% voltage ripple and provides 120 x-ray pulses per second

Has ~14% voltage ripple and provides 360 x-ray pulses per second

Has ~4% voltage ripple and provides 720 x-ray pulses per second

Transformers use this principle to create a current in the secondary winding without touching it.  Requires an alternating magnetic field (and therefore AC current) in order to work.

Vs/Vp = Ns/Np  V = Voltage, N = Number of Windings (s = secondary, p = primary)

Converts incoming electricity to a higher frequency, has less than 1% voltage ripple