Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 158
eries as is more clearlyillustrated in Fig. 88. Again referring to the operation of this form of rhe-ostat with unequal resistance units I may say that if re-sistance No. 3 in Fig. 86 is made for 5 amperes, and re-sistance unit No. 10 is made for only one ampere, it wouldnot do to leave only these… … Fig. 87 Fig. 88 pere capacity it should always be in series with No. 3,which is also of 5 ampere capacity. METHODS OF CONNECTING When using the term rheostat we naturally refer toa resistance box, within which is contained one or moreresistance units of either the non-adjustable or adjustabletype.…
Motion picture theaters · Electric lighting
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