High Frequency Apparatus Page 115

PHYSICIANS' PORTABLE APPARATUS 115 a further refinement of control. One of the secondary units or "inductors" as they are called by the manufacturer, is wound with comparatively few turns of coarse wire to produce the hot spark for fulguration, while the other coil is wound with a greater number of turns of finer wire to produce the higher voltage necessary for vacuum tube work. For diathermy where an exceedingly heavy current is made to pass through a localized area of the body, the coil Fig. 2. Portable kicking coil outfit that will operate on either alternating current direct or is quite unique as it is capable of delivering a current varying between zero and 2,000 milliamperes between the diathermic electrodes. Direct Current Outfits.-Fig. 2 illustrates a treatment outfit of the kicking coil type that sells for $75.00. This outfit weighs but thirty pounds, will operate on either direct or alternating current circuits, and combines all of the high frequency modalities with the exception of heavy autocondensation and X-ray work. True, it will do light gen