High Voltage Generator Flashcards

(44 cards)

0
Q

Allows generator to be disconnected from power line

A

Circuit breaker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Limits current from power line to generator

A

Circuit breaker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Used to change incoming power to levels needed to produce xrays

A

High voltage generator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Reponsible for increasing the output voltage from the auto transformer to kVp

A

High voltage section

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Purpose of oil in high voltage section?

A

electrical insulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The second voltage is higher than the primary voltage

A

Step up transformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

High voltage only operates on

A

Alternating current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Voltage wave form is

A

Sinusoidal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Difference bet primary and secondary waveform

A

Amplitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Derived from a cell and uni-directional

Positive and negative terminals are FIXED

A

Direct current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Current changes its direction after equal intervals of time

It has no fixed terminals

A

Alternating current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Produced by acceleration of electrons from cathode to anode

A

Xrays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Process whereby alternating current is converted to direct current

A

Rectification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Electronic device that allows current flow in one direction

A

Rectifier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A device which performs the opposite function ( DC to AC)

A

Inverter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Electronic device that contains two electrodes

A

Diode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Conductor through which electric current is passed

A

Electrode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Solid state rectifiers are made of ___

18
Q

The ability to conduct electricity

A

Semiconductors

19
Q

2 types of semi conductors

A

N-type

P-type

20
Q

Have loosey bound electrons

21
Q

Have spaces (holes) there are no electrons

22
Q

Flow of electrons

A

Electric current

23
Q

The current that passes through the xray tube exists inly during positive half of the cycle

A

Unrectified voltage

24
Types of rectification
Half wave rectification | Full wave rectification
25
Simpliest type of rectifier since it only uses one diode
Half wave rectification
26
Consists of at least four diodes in high voltage circuit
Full wave rectification
27
Four rectifiers arranged this way are called
Bridge rectifier
28
Characterized the voltage waveform
Voltage ripple
29
Characteristics of waveforms
Period Frequency Amplitude
30
Length of time
Period
31
Time for sine waves
Periodic time
32
Time of square waves
Pulse width
33
Number of waveform
Frequency
34
Intensity of the signal
Amplitude
35
Voltage waveforms are produced by
Single phase power
36
It exist when the xrays are produce near the peak voltage
Pulsating xray beam
37
Caused by the alternate in swing in voltage from 0 to maximum potential
Pulsating xray beam
38
Xray produced with SPP has a value of near zero ate of little value because of lower energy
Pulsed Radiation
39
Multiple voltage waveform are superimposed on one another resulting a nearly constant high voltage
Three-phase power
40
It uses inverter circuits
High frequency voltage generator
41
Converts DC into a series of square pulses
Inverter circuits
42
Near constant potential voltage waveform improving image quality at lower patient radiation dose
High frequency generator
43
Guidelines set by the manufacturer
Power rating