. Popular electricity magazine in plain English. m? G&& Test Set Connections magneto (G). The parallel connectiongh en ni 1 he drawing. For telephone work the arrangement shownin Fig. 2, using watchcase receivemployed. (G) and I B) coi ■ aerator and bell. The double pole double throw switchis arranged to make connection to the magnetosei or to the telephone set. (iPS single point switch used to disconnect the tele-phone transmitter and ba1 tery in use. X populatj ElectricituWireless Club. RADIO-TELEGRAPHY SET FOR AEROPLANES BY L. J. LESH Apparatus for transmitting wireless messages voltmeter a


. Popular electricity magazine in plain English. m? G&& Test Set Connections magneto (G). The parallel connectiongh en ni 1 he drawing. For telephone work the arrangement shownin Fig. 2, using watchcase receivemployed. (G) and I B) coi ■ aerator and bell. The double pole double throw switchis arranged to make connection to the magnetosei or to the telephone set. (iPS single point switch used to disconnect the tele-phone transmitter and ba1 tery in use. X populatj ElectricituWireless Club. RADIO-TELEGRAPHY SET FOR AEROPLANES BY L. J. LESH Apparatus for transmitting wireless messages voltmeter and tachometer were arranged so as from aeroplanes to stations on the ground may-assume a variety of forms but lightness andefficiency are ever the main requirements. At first, it would seem that the problem couldbe easily solved by belting the generator directto the motor of the aeroplane. This has beentried but the system has a fatal defect. Thewireless is inoperative when the motor stops orslows down. In other words, when an aviatoris out over the ocean and runs out of gasoline hewill have no power with which to send his callfor help. A storage battery interposed in the


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectri, bookyear1912