Manufacture of high frequency direct current dental X-ray machine.
- Author:
Jun-Jie SU
1
;
Hai-Hui CHEN
;
Yang-De ZHANG
Author Information
1. School of Mechanical Engineering, University of South China, Hengyang, Hunan 421001, China.
- Publication Type:Journal Article
- MeSH:
Equipment Design;
Humans;
Radiographic Image Enhancement;
Radiographic Image Interpretation, Computer-Assisted;
methods;
Radiography, Dental;
instrumentation
- From:
Chinese Journal of Medical Instrumentation
2008;32(6):443-448
- CountryChina
- Language:Chinese
-
Abstract:
This paper introduces five dental X-ray machines which are manufactured with IGBT to realize high frequency, real-time sampling and PWM to ensure the closed-loop control for tube current and Anodes's high voltage. These five machines also use microcomputer and combined X-ray tube for precise control. The sets don't have high voltage outside. The error of tube voltage is less than 1% and exposure time is less than 3%. The photos of pulp cavity and surrounding tissue can be seen clearly. These sets surely meet the requirements of perspective use in clinical.
