Chapter 3 Part 13
It is important that an electrolytic interrupter should be connected correctly, the platinum to the positive pole of the source. If connected otherwise, the platinum will gradually Induction-coils have been already referred to in the intro- duction to this chapter, and some of the conditions of their working discussed. We do not propose to enter into any detail of their theory or construction, since those will be found sufficiently described in any modern text-book on electricity. (A few notes on their practical working are appended to this chapter for the convenience of workers not familiar with them.) The coil forms, however, a most important part of an X-ray installation, and it is advisable that every operator should make himself thoroughly acquainted with its theory and practical working. For our present purpose it is sufficient to recall that its function, broadly speaking, is to raise or dissolve, or possibly fuse if thin, and the coil will not work well. If the direction of current be correct, the sparks in the interrupter have a red colour; if wrong, they have a blue colour. Litmus-paper can, of course, give us the necessary indication before connection is made, the positive pole making a red stain on the moist paper, as described in the section on the charging of accumulators.
On the Continent electrolytic interrupters are used com- monly, but in conjunction with coils specially made to suit them. The chief check to their use here is the heavy mortality amongst tubes, most of which can stand the heavy current transmitted for a very brief period.
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Tom Thym on December 10th 2009 in x-ray
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