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

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

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

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Notes:

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.

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100 x 80mm (3.9 x 3.1 inches)

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015-Siemens-Alternate-Current-Dynamo-q85-500x379.jpg

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2400 dots per inch

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