Electro-diagnosis and electro-therapeutics : a guide for practitioners and students . Fig. 37.—Double Collector. series). Thus quite an even and economical use of thebattery is made possible. The price of a stationary ap-paratus for the faradic and galvanic current which willmeet all demands varies. In localities where there is an electric-lighting or otherdirect current dynamo-plant* it is best to have the * Alternating current plants can not be used. A transformerwhich changes the alternating current to a direct current is costly. APPARATUS 221 electro-therapeutic apparatus connected with a
Electro-diagnosis and electro-therapeutics : a guide for practitioners and students . Fig. 37.—Double Collector. series). Thus quite an even and economical use of thebattery is made possible. The price of a stationary ap-paratus for the faradic and galvanic current which willmeet all demands varies. In localities where there is an electric-lighting or otherdirect current dynamo-plant* it is best to have the * Alternating current plants can not be used. A transformerwhich changes the alternating current to a direct current is costly. APPARATUS 221 electro-therapeutic apparatus connected with a streetwire. This saves the buying of cells and cost of resistances (incandescent bulbs) included in the ap-. FiG. 38-Wall Case Plate for Street Current. paratus constructed for this purpose the current pro-duced by the street system, which is far too strong forour use, is so far weakened as, with the aid of large 222 ELECTBO-THEBAPEUTICS rheostats, to be practicable for diagnostic and therapeu-tic ends. These apparatus are considerably cheaper than thosein which cells are used. They are made either in theform of tables (cabinets), like those with cell-batteries,or in the shape of wall cases, often of very pleasing ap-pearance (Fig. 38). The cases have the advantage ofeconomy of space and greater cheapness, but the tablesare more useful for fine current gradation because theycan hold larger rheostats. Portable Apparatus. For treatment outside of the physicians office portableapparatus are The faradic portable apparatus are constructed (seeFig. 39) on the same principles as the stationary, onlythe spirals are, as a rule, smaller. The spirals and oneor two active (Leclanche) cells
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1904
