Electric toy making for amateurs. This work treats on the making of electrical toys, electrical apparatus, motors, dynamos and instruments in general ... By T. O'Conor Sloane .. (1914)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, The N.W. Henley publishing co. · leaf 94
d as describedfor the spark coil. After wrapping the core withsome shellacked paper, the primary wire is wound onas compactly as possible. It should be insulated wire,and it is well, if it is cotton covered, to paint overthe successive layers with alcoholic solution of shellac. For ordinary coils… … Fig. 37. Induction Coil. cover the primary coil and core. On this the second-ary core is wound. The tube must be well paraf-fined. Here, far more precautions in the way of insulatingthe wire have to be taken. The wire itself is muchfiner. If the potential is to be raised to one thousandtimes the…
Electric apparatus and appliances · Electric toys
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