[NM018AAK], Technical Note, Thomas Alva Edison, May 31st, 1883
https://edisondigital.rutgers.edu/document/NM018AAK
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Title
[NM018AAK], Technical Note, Thomas Alva Edison, May 31st, 1883
Editor's Notes
For village plant: means to keep ckt of 3 lamps energized in case one in series fails. "Have I anything like this Differential wound magnets when lamps ok the current in low res coil a balances the magnetism produced by the current in the fine wire b. R is a low resistance or it may be another lamp-- when the lamp 1 2 or 3 breaks the diffrential bal is destroyed the armature of the magnet is attracted & the coil R is thrown in ckt-- E" Embodied in patent 438,301. Also cf. doc.NM018AAO and NM018AAQ.
Author
Mentioned
Date
1883-05-31
Type
Folder/Volume ID
NM018-F
Microfilm ID
44:553
Document ID
NM018AAK
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University