. Popular electricity magazine in plain English. be. Take a match and compress the tinfoiltight. Then take it put and do likewise withthe other roll and leave it in. Now put a pieceof silicon and iron pyrites in the tube and takethe other roll and force it gently against the top-most mineral. Connect up the detector andtap the glass tube until you hear the signals theloudest. Carefully disconnect and pour meltedsealing wax into each end. Perikon crystals of course could be used inplace of those mentioned and will work well.—T. C. Kearfott. MORSOPHONE The Morsophone is a little French device of
. Popular electricity magazine in plain English. be. Take a match and compress the tinfoiltight. Then take it put and do likewise withthe other roll and leave it in. Now put a pieceof silicon and iron pyrites in the tube and takethe other roll and force it gently against the top-most mineral. Connect up the detector andtap the glass tube until you hear the signals theloudest. Carefully disconnect and pour meltedsealing wax into each end. Perikon crystals of course could be used inplace of those mentioned and will work well.—T. C. Kearfott. MORSOPHONE The Morsophone is a little French device ofvery small cost which enables one to learntelegraph receiving very quickly. A set offlat pieces resembling dominoes are used andthese are made of some insulating material andcarry metal plates on the under side representingdots and dashes. The upper side carries onlyan arrow to show the direction for moving thedominoes, and it only remains to move themalong the box over a double contact piece toproduce the Morse signals by closing an electric. Morsophone and Plates domino for each letter or other character of theusual alphabet. WIRELESS TELEPHONE FOR THEEXPERIMENTER A simple system which all amateurs owning awireless station can install with no additionalexpense other than a common telephone trans-mitter, is shown in Figs, i and 2. A current of four amperes at 110 volts, 60cycles, is connected by wires (A) and (B) toprimary (C) of a yi kilowatt transformer. Fromthe secondary (D), wires connect to the termi-nals (E) and (F) of a micrometer gap shown indetail in Fig. 2. This gap is made by taking two
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectri, bookyear1912
