[NM018AAK], Technical Note, Thomas Alva Edison, May 31st, 1883

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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.

Mentions

Date

1883-05-31

Decade

1880-1889

Identifier

NM018AAK

Folder Set

NM018-F

Microfilm ID

44:553

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University

Item sets