. Practical wireless telegraphy; a complete text book for students of radio communication . e terminals of a 30 volt battery with aregulating resistance R connected in series. The resistance of R varies as the normal charg-ing rate of the particular battery under charge, from 5 amperes in the smaller types of cellsto 50 or 100 amperes in the larger types. The resistance coil may be of fixed or variablevalue. It is sometimes fitted with a single blade switch, permitting a portion of the coil tobe short circuited, to provide two values of charging current. It is made up of a resistancewire alloy
. Practical wireless telegraphy; a complete text book for students of radio communication . e terminals of a 30 volt battery with aregulating resistance R connected in series. The resistance of R varies as the normal charg-ing rate of the particular battery under charge, from 5 amperes in the smaller types of cellsto 50 or 100 amperes in the larger types. The resistance coil may be of fixed or variablevalue. It is sometimes fitted with a single blade switch, permitting a portion of the coil tobe short circuited, to provide two values of charging current. It is made up of a resistancewire alloy, constructed to withstand continuous flow of current at the normal rating of the bat-tery without overheating. When the circuit from the charging generator is closed, current flows fromplate to plate through the electrolyte until the surface is converted to activematerial, the process requiring several hours, according to the degree to whichthe cell has been discharged. In any case the charging should continue untilthere is no further rise in either the specific gravity or the & ms
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
