1 / 9

High Voltage Supply

High Voltage Supply. High voltage Supplies Generators should provide a smooth constant high voltage to the X-ray tube. Transformers. N primary. N secondary. Step up transformers N primary = 100 N secondary = 50000 V primary = 240V V secondary = 120 kV.

mari-jefferson
Download Presentation

High Voltage Supply

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. High Voltage Supply

  2. High voltage Supplies Generators should provide a smooth constant high voltage to the X-ray tube.

  3. Transformers N primary N secondary Step up transformers Nprimary= 100 Nsecondary = 50000 V primary = 240V V secondary = 120 kV

  4. Single phase Full Rectification

  5. High frequency power supplies Modern High Voltage supplies use a high high frequency chopped DC voltage (500V) which is transformed to a high voltage (74kV) The 500V DC signal is chopped at between 20kHz and 30 kHz and transformed using a step up transformer to 74kV. The smoothed supply may have a ripple of below 3%

  6. A Typical Frequency Generator : HSA RP • Kilovolts • ·kV selections: 80,1 00,120, and 140 kV • ·Basic kVp Accuracy: + 3% +/- (3% + 2kV) • Excludes first 10msec of exposure • ·kVp during first 10 ms: Basic accuracy +/- 5 kV • Milliamperes • ·mA selections: 40 to 400 mA, by 10 mA increments • Patient scanning subject to tube limitations and 48kW maximum

  7. Chopped 550 Supply

  8. Resonance Voltage Control

More Related