File:The electro-therapeutic guide, or, A thousand questions asked and answered (1907) (14799518053).jpg

Identifier: electrotherapeut00benn (find matches)
Title: The electro-therapeutic guide, or, A thousand questions asked and answered
Year: 1907 (1900s)
Authors: Bennett, Homer Clark, 1865-1928
Subjects: Electrotherapeutics Electricity in medicine Ohm's law X-rays Electricity Electricity X-Rays Electromagnetic Phenomena Electric Stimulation Therapy
Publisher: Lima (Ohio) : Literary Dept. of the National College of Electro-Therapeutics
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
^ the more magnetic lines of force cut and the greaterthe inductive force, within the limit of saturation. What is the limit of satwration? There is a limit to the extent of the combination or electro-magneticfield beyond which the induced current is not strong enough to overcomethe resistance to the passage of the secondary current through the secondarycoil. This is called the ^^ limit of saturation. THE PHYSICIANS INDUCTION COIL What are the essentials of a isLtadic battery? The accompanying sketch shows a complete electro-therapeutic induc-tion coil. It consists of the following essentials for the best results in ther-apeutics. 48 THE EIvECTRO-THERAPEUTlC GUIDE
Text Appearing After Image:
1. 2.3.4.5.6.7.8.9.10. \MovW^v^c^ DvaQTavw.- PKus^cvaia^ IyxcIucTloix Coil Some form of chemical or other generator. A primary coil. A soft iron temporary magnet, or core. An interrupte? or circuit-breaker (vibrator). A secondary coil. A means of varying the primary current. A means of varying the secondary current. Binding posts. Electrodes and conducting cords. A shield, or muffler (not absolutely essential). What is the fttnction of the vibrator and muffler? The vibrator is in fact a rheotome, whose function it is to automaticallyinterrupt the current in the primary coil, thereb)^ producing hysteresis inthe soft iron core within the coil. The mufflers purpose is to restrict theextension of the electro-magnetic field into the substance of the secondarycoil. The amount of restriction depends upon the degree to which the coreis covered by the muffler. The muffler acts as a short circuit to the magneticflux. It may be (and usualh^ is) placed between the core and primary coil,in which p

Note About Images