Handy man's workshop and laboratory . connectingthem to a direct-current house-lighting circuit through a suitableresistance, but where the-current supply is alternating many havesupposed that good results cannot be obtained without the useof complicated and expensive apparatus for converting the alter-nating into direct current. By following out the instructionsgiven below, however, an electrolytic rectifier suitable for charg-ing a six-volt sixty-ampere-hour battery from no volts can be 284 HANDY MAN S WORKSHOP AND LABORATORY made and used at home with small expense and satisfactoryresults.
Handy man's workshop and laboratory . connectingthem to a direct-current house-lighting circuit through a suitableresistance, but where the-current supply is alternating many havesupposed that good results cannot be obtained without the useof complicated and expensive apparatus for converting the alter-nating into direct current. By following out the instructionsgiven below, however, an electrolytic rectifier suitable for charg-ing a six-volt sixty-ampere-hour battery from no volts can be 284 HANDY MAN S WORKSHOP AND LABORATORY made and used at home with small expense and satisfactoryresults. There are two parts to the required apparatus—the autotrans-former for reducing the voltage of the line from no to thatrequired by the battery, and the electrolytic cell for rectifyingthe current or causing it to pass always in the same direction. The autotransformer is shown by the drawings in Fig. 226. Itconsists of a single coil of magnet wire wound on a rectangularwooden spool, inside of which a bundle of steel strips is after-. Fig. 226—The autotransformer ward placed to form a core. The spool is best made of well-seasoned white pine or whitewood, as these soft woods are readilyobtained and easy to work. It is a good plan to dry the woodthoroughly in an oven before it is cut up. For the body of the spool, four pieces 2 1/16 inches wide, 4inches long, and not thicker than J/\. inch are required. Theseshould be securely glued and nailed together so as to form arectangular tube 4 inches long and measuring I 9/16 inch by2 1/16 inches on the inside. For the heads, two pieces y2 inchthick, 3^ inches wide, and 4 inches long are needed. Throughthe middle of each a hole about 2 1/16 inches wide by 2 9/16 HANDY MANS WORKSHOP AND LABORATORY 285 inches long should be cut to fit snugly over the ends of the the heads are securely glued to the central tube, andbraced by a few wire nails driven into them from the inside, thewhole will form a strong spool having a space 3 inc
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
