Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 171
ever the linevoltage may be. This motor should be used for drivingan electric generator wound for the proper voltage, whichin the case above specified would be about 70 volts. Withsuch motor generator installation changing the line volt-age to 70 volts there will, of course, be required a…
Motion picture theaters · Electric lighting
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