Electro-diagnosis and electro-therapeutics : a guide for practitioners and students . Fig. 36. of a slight switching may be used either as galvanom-eters (amperemeters) or as voltmeters, from which notonly the current intensity, but also the (volt) tension canbe read. This takes into especial consideration the ex-periments of Dubois mentioned above (page 12, foot-note) according to which the depends not on theintensity alone, but upon the tension. So long as these 220 ELEGTBO-TREBAFEUTICS Cell Collectors ConnectingApparatus experimental results are still contested, such apparatusis qu
Electro-diagnosis and electro-therapeutics : a guide for practitioners and students . Fig. 36. of a slight switching may be used either as galvanom-eters (amperemeters) or as voltmeters, from which notonly the current intensity, but also the (volt) tension canbe read. This takes into especial consideration the ex-periments of Dubois mentioned above (page 12, foot-note) according to which the depends not on theintensity alone, but upon the tension. So long as these 220 ELEGTBO-TREBAFEUTICS Cell Collectors ConnectingApparatus experimental results are still contested, such apparatusis quite superfluous for the practitioner. Of cell-collectors, those constructed by Eeinizer, Geb-bert, and Schall are particularly to be mentioned. Theycontain a so-called double-collector (see Fig. 37) whichmakes it possible to include in the circuit any desirednumber of cells of a battery (beginning at any cell in the. 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-
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