A manual of practical X-ray work / by David Arthur and John Muir.

  • Davey Arthur
Date:
1909
Catalogue details

Licence: Public Domain Mark

Credit: A manual of practical X-ray work / by David Arthur and John Muir. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

    46/264 page 30
    (e) A number of other so-called ' rectifiers' have been designed to render an alternating current unidirectional, but in our experience none of those have proved of practical value. II. Accumulators. [By request we have in the following section dealt with accumulators in more detail than with most of the other apparatus, so as to furnish a guide in their practical application.] Accumulators are valuable as sources of direct supply— (1) Where portability is of prime importance ; (2) Where there is an existent source of supply, but Fig. 17. not convenient for direct connection by wiring to the X-ray installation ; (3) In occasional cases where supply is available, but not of a nature for direct use. 1. Where an X-ray outfit is chosen mainly with a view to portability, the advantage of accumulators will depend largely upon convenient opportunity of recharging them, since they can by no means be made to produce electricity unless in the degree to which that has been previously supplied to them. Elsewhere in this chapter (pp. 46 and 47) we suggest possible arrangements of a portable nature where the set must be self-
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