. Practical wireless telegraphy; a complete text book for students of radio communication . •a 76 PRACTICAL WIRELESS IIEGATiVE_PLATE JVOODSEPARATOR ships charging panel whereby these two values can be obtained. The flow of chargingcurrent is automatically taken care of by the battery, the counter E. M. F. of which risesas the charge progresses. This gradually reduces the charging current without extraappliances. 75. How to Determine the Polarity of the Charging Generator.—We have mentioned that during charge thepositive pole of the storage bat-teries must be connected to thepositi
. Practical wireless telegraphy; a complete text book for students of radio communication . •a 76 PRACTICAL WIRELESS IIEGATiVE_PLATE JVOODSEPARATOR ships charging panel whereby these two values can be obtained. The flow of chargingcurrent is automatically taken care of by the battery, the counter E. M. F. of which risesas the charge progresses. This gradually reduces the charging current without extraappliances. 75. How to Determine the Polarity of the Charging Generator.—We have mentioned that during charge thepositive pole of the storage bat-teries must be connected to thepositive pole of the dynamo. The polarity of the chargingmains may be determined in threeways: (1) By a direct current voltmeter ofthe magnetic type; (2) By an electrochemical polarityindicator; (3) By dipping the terminals of thedynamo in a glass of plain orsalt water. Direct current voltmeters withmagnetic mechanism have a (+).and(—) mark on the binding posts. Ifconnected improperly to a source ofdirect current the pointer instead ofswinging in the direction of the fullscale position will move to the left ofthe zero positio
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
