Radiant energy – Ion generation – With sample vaporizing means
Patent
1977-07-21
1979-10-09
Anderson, Bruce C.
Radiant energy
Ion generation
With sample vaporizing means
250413, 250402, H05G 110
Patent
active
041707354
ABSTRACT:
By providing a hand-held remote controller capable of controlling, at a low voltage level, all operational functions of an X-ray generating module with all high voltage lines contained within the main housing, a portable X-ray unit is achieved having both mobility and flexibility. This is chiefly attained by employing kVp line selection in the remote controller with high speed solid state switching in the main housing for energizing the desired windings in the high voltage transformer, and digital control of the current in the remote controller for delivery to the filament transformer of the X-ray tube. The filament current to the X-ray tube, which is automatically varied as a function of the kVp level and exposure time selected, is controlled by changing the frequency of the pulse delivered to the filament transformer. The particular current level being employed is automatically determined by the system, to assure maximum power utilization of the X-ray tube within its heat dissipation capabilities. In this way, a low power and lightweight X-ray tube is used with maximum power capabilities and long life. In the preferred embodiment, the X-ray unit incorporates a sealed X-ray generating module, containing the X-ray tube and the high voltage transformers, which is entirely replaceable quickly and easily when necessary, thereby allowing replacement by unskilled personnel.
REFERENCES:
patent: 2894143 (1959-07-01), Graves
patent: 3406286 (1968-10-01), Bross
patent: 3971946 (1976-07-01), Craig et al.
Codina Jorge G.
Estelle Weems E.
Stussman Gerald J.
Anderson Bruce C.
General X-Ray Corporation
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