New concepts in diagnosis and treatment : physico-clinical medicine, the practical application of the electronic theory in the interpretation and treatment of disease, with an appendix on new scientific facts . Fig. 69.—Sphygmobiometer. Showing the components and the directionof the energy Fig. 70.—Sphygmobiomclcr. A, receiving electrode; B, pusii bulton;C, abdominal electrode; D, ground wire; E, potentiometer; F, variable con-denser; G, rheostat; H, induction coil which may be put in or out of the cir-cuit by aid of a lever. SPHYGMOBIOMETER 2 / 0 The Induction Coil (Fig. 69 b) is co
New concepts in diagnosis and treatment : physico-clinical medicine, the practical application of the electronic theory in the interpretation and treatment of disease, with an appendix on new scientific facts . Fig. 69.—Sphygmobiometer. Showing the components and the directionof the energy Fig. 70.—Sphygmobiomclcr. A, receiving electrode; B, pusii bulton;C, abdominal electrode; D, ground wire; E, potentiometer; F, variable con-denser; G, rheostat; H, induction coil which may be put in or out of the cir-cuit by aid of a lever. SPHYGMOBIOMETER 2 / 0 The Induction Coil (Fig. 69 b) is constructed on the con-ventional principle with vibrator eliminated. Its essentialobject is to increase the voltage of energy. The Resistance Coil (Fig. 69 e) is practically the biody-namometer (Fig. 18). This may .be used for vibrodynamometry (p. 49) pro-\ided the index of the condenser is at zero. The POTENTIOMETER (Fig. 70) is an arrangement for soregulating the voltage of energy that it will render thedetector (heart) as sensitive as possible. The index is usually left at zero (of the scale) but whenthe energy is too strong so as to diminish the force of theventricular contractions (page 85), more resistance isinterposed. The foregoing apparatus is designated, biometer. The Sphygmophone
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