[MBN003161C], Technical Note, Charles Batchelor, July 18th, 1879
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Title
[MBN003161C], Technical Note, Charles Batchelor, July 18th, 1879
Editor's Notes
No. 216 alter 4 telephones for England to have a coil in them of primary .40 ohms secondary 150 ohms tertiary 400 ohms and make a new box and base to suit them hinge the top pf the box so that we can get to transmitter to adjust it connections bk 38 & 24 also [sketch?] finished 19 July; No. 217 make one coil with primary and secondary only but coil to be made one inch longer than our regular coils & wound with same wire & number of layers
Author
Date
1879-07-18
Type
Folder/Volume ID
MBN003-F
Microfilm ID
90:747
Document ID
MBN003161C
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University