A manual of X-ray technic by Arthur C. Christie

By Arthur C. Christie

Excerpt from A guide of X-Ray Technic

Every X-ray Operator is recommended to make himself completely accustomed to the main points of development of the actual equipment with which he's operating. he's then in place to maintain it always at its element of utmost potency. together with his gear in good shape he can then progressively grasp the small de tails so necessary to sturdy X-ray paintings, and with perform in studying radiograms he'll ultimately gather skill to correctly interpret them and so as to arrive at right diagnoses.

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By some means. Ventril or valve tubes, previously described, have been used for this purpose, but most high-tension transformers are now provided with some form of mechanical rectifying switches. Fig. 17 represents diagrammatically the nections of the motor, transformer con- and rectifying EXCITING THE RONTGEN-RAY TUBE 43 switches of the so-called " interrupterless " apparatus A direct current used for Rontgen-ray work. is fur- nished from the line and passes through the switch the line L to the armature 2, From generator.

They are practically never used in (2) an Storage Batteries. electric X-ray work. —The storage battery of automobile will operate a coil and inter- A MANUAL OF X-RAY TECHNIC 36 Small portable storage batteries rupter. The used. may also be greatest objections to the use of storage batteries for portable apparatus are their great weight and the latter is difficulties now of getting them charged. The accomplished in the military service by using a generator connected with the motor of an auto- mobile or with a small portable gas engine.

A) Vibrating. (b) Mercury. This is the slowest. Medium 1. Dipper. 2. Rotary. rate. 3. Jet. (2) Electrolytic. Most rapid and there- fore give the strongest current. 1. Wehnelt. 2. Caldweil-Simon. Vibrating Interrupter. ates — This interrupter oper- on the same principle as the electric bell, consists essentially of a spring carrying at its and end a platinum contact point and an armature of soft iron. The armature is close to the end of the induction coil. The instant a current flows through the primary of A MANUAL OF X-RAY TECHNIC 32 the coil the core becomes magnetized, and acting upon the armature of soft iron pulls the platinum contact point away from its contact with the general circuit.

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