. Practical wireless telegraphy; a complete text book for students of radio communication . o / \ o / \ -^ 1 1 zna: + \ ^ O 1 «;» AUXILIARY APPARATUS OR EMERGENCY TRANSMITTERS. 185 the circuit breaker open the circuit of the no-voltage release magnet when the breaker should be thoroughly understood that this breaker will open the charging circuit in caseof an overload during the charging p^iod, or in case the voltage of the generator falls belowthe voltage of the battery. The breaker will also open when the pointer on the ampere-hourmeter touches the contact point at the zero p
. Practical wireless telegraphy; a complete text book for students of radio communication . o / \ o / \ -^ 1 1 zna: + \ ^ O 1 «;» AUXILIARY APPARATUS OR EMERGENCY TRANSMITTERS. 185 the circuit breaker open the circuit of the no-voltage release magnet when the breaker should be thoroughly understood that this breaker will open the charging circuit in caseof an overload during the charging p^iod, or in case the voltage of the generator falls belowthe voltage of the battery. The breaker will also open when the pointer on the ampere-hourmeter touches the contact point at the zero position (during the charging process). CHARGIN6 RESISTANCESFOR BATTERY A =^ CHARGING RESISTANCESFOR 5WTERY & \ AUX OPtHIHG SW. OPENS WHEH CB OPENS [j=f> RESISTANCE i °Z:~^LOW VOUTASE RELEASE s /. ■M\W * EJvTTERV A * ^ BATTERY A ZZZ TO LIGHTS Fig. 208 Rear View Actual Wiring Diagram of Electric Storage Battery Companys Charging Panel. P-1 and P-2 are 2S-watt incandescent lamps which are shunted around the circuitbreaker and the resistance units. Through these, a small value of charging current con-stantly flows through the cells, compensating for local losses, such as may be caused bylocal action or a slight surface leakage of the cell. 186 PRACTICAL WIRELESS TELEGRAPHY. TO DISCHARGE MAIN560 CELLS IN SERIES r0~\^ i BATTERY UNIT A An important part of this apparatus is the double pole double throw reversing switchplaced in the upper left-hand corner of the drawing. Should the connections from theships generator to the switchboard be reversed, say, duriflg repair or rewiring, the correctpolarity can always be obtained by plugging in the voltmeter connection to the power line,followed hy closing this switch. // the pointer of the meter moves in the proper directionor across the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
