. An elementary manual of radiotelegraphy and radiotelephony for students and operators . Fig. 20.—Section of Chaffee discharger for producing highlydamped discharges. be described as methods for the production of closely sequenttrains of damped waves which run into one another so closely no RADIOTELEGRAPHY that they are practicitUy equivalent to imdamped waves. One ofthese is due to E. Leon. Chaffee, who has produced such closelysequent trains by means of very rapid condenser discharges takingplace between a flat aluminium cathode or negative pole and acopper anode or positive pole. Two flat
. An elementary manual of radiotelegraphy and radiotelephony for students and operators . Fig. 20.—Section of Chaffee discharger for producing highlydamped discharges. be described as methods for the production of closely sequenttrains of damped waves which run into one another so closely no RADIOTELEGRAPHY that they are practicitUy equivalent to imdamped waves. One ofthese is due to E. Leon. Chaffee, who has produced such closelysequent trains by means of very rapid condenser discharges takingplace between a flat aluminium cathode or negative pole and acopper anode or positive pole. Two flat surfaces of aluminium and copper are placed afraction of a millimetre apart in an atmosphere of moist hydrogen(see Fig. 20). If a condenser discharges across this gap, thecondenser being maintained constantly charged by a dynamogiving a continuous electromotive force of 500 to 600 volts,there is a very rapid sequence of highly damped discharges. p/vwyw. ■Q)—^rr&r^ L0-J Fig. 21.—Diagram of connections for Ctiaffee discharger. If a secondary circuit is connected to the condenser circuit (seeFig. 21), then in this secondary circuit we have a close sequenceof feebly damped discharges which are practically equivalent toan undamped oscillation. Two other methods have been devised which accomplish verymuch the same thing. Galletti has invented a method, the scheme of connections ofwhich is shown in Fig. 22,in which a number of con-densers, Ci, C2, C3, etc., eachin series, with an inductiveresistance, Ei, E2, E3, etc.,are charged off constantpotential mains through acommon condenser Cq. Eachcondenser, when charged,discharges through its ownspecial gap, Ti, T2, T3, etc. The peculiarity of this arrangementis that these discharges do not take place simultaneously butsuccessively, so that in one common inductance, L, there is a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1916
