Figs. 15 and 16.—Showing Siemens’ Alternate Current Dynamo, with its Excitor.details

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Figs. 15 and 16.—Showing Siemens’ Alternate Current Dynamo, with its Excitor. more

machinery, electrics, greyscale

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background: none

Image title: Figs. 15 and 16.—Showing Siemens’ Alternate Current Dynamo, with its Excitor.
Source: Walker, Sydney F.: “Electric Lighting for Marine Engineers” (1892)
Place shown: none
Keywords: machinery, electrics, greyscale
Status: out of copyright (called public domain in the USA), hence royalty-free stock image for all purposes usage credit requested
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Fig. 15 shows the only form of alternator that has been used on board ship [as of 1892]. It is of the Siemens pattern; having, as already explained, a double crown of short field-magnets with the starlike armature revolving in the space between them.

Fig. 16 shows the excitor, as it is termed, that is used with this dynamo. It is a series wound Siemens’ dynamo of the early type.

The initials W.M.R.Q. on the engraving could be the engraver’s initials, the artist’s initials, or both.

Dimensions: 100 x 80mm (3.9 x 3.1 inches)
Filename: 015-Siemens-Alternate-Current-Dynamo-q75-1552x1175.jpg
Scanner dpi: 2400
Unmarked: You can get a version of this image without the watermark at the lower right corner by requesting it in using the comment link below. The images are watermarked to help people find where they came from if they get reposted to blogs or other sites. Images under 1200 pixels on a side are still free, although I will ask for a donation :-)
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