12 table model

Ferguson (in the United States - see text)

Daten
Forum
Bilder
Sammlungen

  • Jahr
  • 1926/1927
  • Kategorie
  • Rundfunkempfänger (Radio - oder Tuner nach WW2)
  • Radiomuseum.org ID
  • 40495
    • anderer Name: Ferguson Co., J.B. || Ferguson Radio Corp. || Ferguson Radio &Television Co., Inc.

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 Technische Daten

  • Anzahl Röhren
  • 6
  • Röhren
  • Hauptprinzip
  • Geradeaus allg. (mit oder ohne Rückk.)
  • Wellenbereiche
  • Mittelwelle, keine anderen.
  • Betriebsart / Volt
  • Akku und/oder Batterie
  • Lautsprecher
  • - Dieses Modell benötigt externe(n) Lautsprecher.
  • Material
  • Gerät mit Holzgehäuse
  • von Radiomuseum.org
  • Modell: 12 table model - Ferguson in the United States
  • Form
  • Tischmodell, Zusatz nicht bekannt - allgemein.
  • Bemerkung
  • Two dials (primary tuning control knobs)
  • Originalpreis
  • 75.00 $
  • Datenherkunft extern
  • Ernst Erb

 Sammlungen | Museen | Literatur

Sammlungen

Das Modell 12 befindet sich in den Sammlungen folgender Mitglieder.

 Forum

Forumsbeiträge zum Modell: Ferguson in the: 12 table model

Threads: 1 | Posts: 3

Hello,

       I own a Ferguson - 12, but I do not know if it is the old or the new one. I have unmounted it from the case for drawing schematic and doing some minor repairs.
    It has 3 AF stages. The coupling between 1-2 and 2-3 are RC. The coupling between detector and 1st AF is by a transformer of the brand “Silver - Marshall”. Because the shape of transformer mounting and  connections I think it could not to be the original.
    In addition, I need some information about DC supply:
     The are four +B sources ( detector plate, RF , AF(1-2) stages and power stage. May be 22.5 for detector, 135 for power and ¿ what for AF and RF ?
    There is -C for grid returns of the 3 AF stages, the same for all three, two of them 201A and the last one of 112A type. For both tubes -C would be -9 volts if +B were 135. But 201A and 112A have a diferent DC wire.

    The reostat  is only conected to the RF amplifier (2 tubes). Then, all other tubes should work at battery voltage ( 6 or more volts) ?
    Finally, I suppose that -B is connected to ground. Ins this case, if +A battery is connected to -B, the grid return of AF would be to +A, not usual, I think. The grid of detector tube returns also to +A, but it is a 200A, and for this also seems to be wrong.

     I will be thankful for much any information or suggestion on this subject.

Felix Corrochano, 13.Jan.11

Weitere Posts (3) zu diesem Thema.