[D8968AAU], Letter from Arthur Edwin Kennelly to Alfred Ord Tate, December 11th, 1889
https://edisondigital.rutgers.edu/document/D8968AAU
→ View document with UniversalViewer
→ View document on Archive.org
→ Re-use this digital object via a IIIF manifest
Title
[D8968AAU], Letter from Arthur Edwin Kennelly to Alfred Ord Tate, December 11th, 1889
Editor's Notes
Orange, NJ 11th Dec. 89 A.O. Tate Esq Dear Sir The accompanying phonoplex coil appears to be satisfactory in every respect except provision for insulation, which is an important one as the momentary e.m.f. obtained from the coil is about 200 volts. I would suggest that the wires leading beneath the base to the terminals be in all cases insulated by thin rubber tubing with the bottom of the terminals covered by a thin layer of shellac or paraffine wax also that a thin lager of shellac be spread in the form of varnish over the outer layer before coating with braid to prevent the possible absorption of moisture Yours faithfully A.E. Kennelly
Author
Recipient
Date
1889-12-11
Type
Subject
Folder/Volume ID
D8968-F
Microfilm ID
128:375
Document ID
D8968AAU
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University