. Dental electro-therapeutics. same in both diagrams, the courseof the current and its action on the secondary coil and themagnet are easily comprehended. The diagrams are fromLewis Jones book. One pole of the battery is connectedto the coil at A. The current then passes by the adjustingscrew B, the vibrator //, and the support A, to the magnetJ), which actuates the contact-breaker. After traversingthis the circuit gives off a branch to the binding screw P,and is continued to the primary coil EE, the return wirefrom which again gives off a branch to the secondary bindingscrew at I, and is then
. Dental electro-therapeutics. same in both diagrams, the courseof the current and its action on the secondary coil and themagnet are easily comprehended. The diagrams are fromLewis Jones book. One pole of the battery is connectedto the coil at A. The current then passes by the adjustingscrew B, the vibrator //, and the support A, to the magnetJ), which actuates the contact-breaker. After traversingthis the circuit gives off a branch to the binding screw P,and is continued to the primary coil EE, the return wirefrom which again gives off a branch to the secondary bindingscrew at I, and is then continued to the other pole of thebattery. The two binding screws at P are thus in connectionwith the two ends of the primary coil, and by means ofelectrodes attached to them the patient may be treated with 84 MAGNETIC FIELD, CURRENTS AND BATTERIES the primary current of this coil. The secondary coil F iswound on a separate hollow bobbin and has its terminals at bobbin is made to slide like a sledge on guides, so that. Fig. 24.—Arrangement of wires of an induction coil. it can be made to approach or recede from the primary G a handle is seen attached to the iron core which canslide in and out of the primary coil and so further modify theelectro-motive force induced in the primary and secondarycoils by varying the strength of their magnetic field.
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