100-Radio-Hookups-EICO-1924

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100 RADIO HOOK-UPSFig. 92. Another similar arrangement wherein the crystaldetector may be used by closing the switch S and pitting oat thetube.Fig. 93. Here is a vacuum tube hóok-np without a "B" battery.It operates best when a soft tube is used. Such an arrangementcomes in handy when the "B" battery goes dead. Note thatone side of the phones connects to the paddy, terminal of the "A"battery.Pig. 9LFig. 94. A three circuit regenerative íiceivet lit which therela the preference of the vacuum detector and the one stageaudio frequency amplifier. or thtt,1 detector and the amplifier.The crystal is brought intq e..3 u n by closing switch SW andextinguishing the, tube.'Llb/ anr di'.uasa2:rme,9abin)4e
100 RADIO HOOK-UPSFig. 95. A combination long and short wave receiver of theregenerative type. Long waves can be received when switches Sand S-1 are open. L and L-1 are the coils of a variocoupler. TheHoneycomb coils should be of such a value to cover the long wavelengths desired to be received.Fig. 96. Another form of short and long wave receiver whichis also very sensitive. The diagram is self-explanatory.Fig. 97 Fig. 99Fig. 97. A capacity coupled receiver using a variocoupler andthree variable condensers. This arrangement is very selectiveindeed.Fig. 98. Another type of capacity coupled receiver with theaddition of a tickler coil for regeneration. L can well be a oneslide tuning coil while L-1 and L-2 are the coils of a variocoupler.Most of the tuning is accomplished by the variable condensers.megohm.00025E ociFig. 99Fig. 99. A circuit with the addition of a switch for connectingthe variable condenser is series, out of the circuit, or inparallel with the primary coil of the coupler.47
Page 1 and 2: 1THE EXPERIMENTERS LIBRARY, No. ilo
Page 3 and 4: THE EXPERIMENTER'S LIBRARY, No.100
Page 5 and 6: FOREWORDBEFORE entering upon the st
Page 7 and 8: 100 RADIO HOOK-UPSThe detectors to
Page 9 and 10: 1100 RADIO HOOK-UPSSYMBOLS USED IN
Page 11 and 12: 100 RADIO HOOK-UPScircuit can be tr
Page 13 and 14: 100 RADIO HOOK-UPSbefore he can rea
Page 15 and 16: 100 RADIO HOOK-UPShouse WD -11. The
Page 17 and 18: 100 RADIO HOOK-UPSFig. 6. Honeycomb
Page 19 and 20: -100 RADIO HOOK-UPSt'Jrxyriet Méb
Page 21 and 22: 100 RADIO 11O0H-UP8"T'Fig. 26Fig. 2
Page 23 and 24: 100 RADIO HOOK-UPS01504017Lb07Fit.
Page 25 and 26: 100 RADIO HOOK-UPS.00i lmegohmChore
Page 27 and 28: i!e RADIO HOAX -13143AUDIO FREQUENC
Page 29 and 30: 100 RADIO ROOK -UPSA..`%M7S .f4,Mf.
Page 31 and 32: 100 RADIO HOOK-UPSrm. 53Fig. 53. Th
Page 33 and 34: 100 RADIO HOOK-UPSR.f7.R.fxPv/rn/iA
Page 35 and 36: 100 RADIO HOOK-UPSFig. 61Fig. 61. A
Page 37 and 38: 193 11ADIO HOOK-UPSFig. 65. Here is
Page 39 and 40: 140 RADIO HOOK-UPSREFLEX CIRCUITSFi
Page 41 and 42: á_100 RADIO HOOK-UPS,401iloopTOLlm
Page 43 and 44: 100 RADIO HOOK-UPS.-:90J5j40Qf-DL /
Page 45 and 46: 100 RADIO HOOK -U PS1MDJ MF.ri....c
Page 47: 100 RADIO HOOK-UPSFig. 88. Another
Page 51 and 52: "The Radio Constructor Series"The C

100-Radio-Hookups-EICO-1924

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