[LB022081], Letter from Thomas Alva Edison to C H Rudd, May 13th, 1886
https://edisondigital.rutgers.edu/document/LB022081
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- Title
- [LB022081], Letter from Thomas Alva Edison to C H Rudd, May 13th, 1886
- Editor's Notes
- [SELECTABLE] I have just been trying some experiments with the "Phonoplex". I find that with one primary coil and two cells of battery, I get a certain result through an artificial line with condensors, and by putting two coils of the same resistance and size in series and double the battery, so that the[y] are the same amperes, I get precisely the same quickness of discharge, but double the electro-motive-force, hence I think that putting a number of primaries in series, say two or three, and connecting the secondary in series, you will derive great benefit. I know you certainly would if you use primary coils only, if you were to try using excessively small condensors at the receiving end of the wires. On the "Phonoplex", when I use the musical sound diminishing the size of the condensors did not seem to effect the musical sound, while it constantly diminished the inductive sounds. ## I do not see why you cannot use the cable, for you can cut it up as much as you please and can easily make a splice by using tape. I am trying a great number of experiments to help you out, and I certainly believe that between the two of us we will bring the invention to perfection. Yours very truly,
- Author
- Edison, Thomas Alva
- Recipient
- Rudd, C H
- Date
- 1886-05-13
- Type
- Letter
- Folder ID
- LB022-F
- Microfilm ID
- 83:619
- Document ID
- LB022081
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- License
- CC0 1.0 Universal
- Has Version
- Archive.org Viewer, Microfilm Series Reel 83
- Item sets
- [LB022-F] LB-022 (1886)