Power Amplifier and Plate Supply Type 420

General Radio Company; Cambridge (MA)

  • Anno
  • 1929
  • Categoria
  • Amplificatore audio o mixer audio
  • Radiomuseum.org ID
  • 328544
    • alternative name: GenRad

 Specifiche tecniche

  • Numero di tubi
  • 2
  • Principio generale
  • Amplificatore audio
  • Gamme d'onda
  • - senza
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 230 Volt
  • Altoparlante
  • - Questo apparecchio richiede altoparlante/i esterno/i.
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: Power Amplifier and Plate Supply Type 420 - General Radio Company;
  • Forma
  • Soprammobile con qualsiasi forma (non saputo).
  • Annotazioni
  • Power Amplifier and Plate Supply

    This unit operates from 230 volt (50 cycle) A.C. and provides plate voltages of 45, 90 and 130 in addition to supplying the proper plate voltage for the UX -171 tube of the power amplifier.

    An outstanding feature of the type 420 is that it has no variable resistance voltage controls to get out of order and cause noisy reception. Voltages in this unit are controlled by fixed resistances tightly sealed from dust and moisture.

    This unit is designed for the UX -213 Rectron rectifier tube and UX -171 power tube in the amplifier. It is contained in a metal case with black crystalline finish. The type 420 may be used to replace "B" batteries with all popular makes and circuits of radio receivers regardless of whether they may be operated by dry cell or storage battery tubes.

  • Bibliografia
  • -- Collector info (Sammler) (HRSA Radio Waves Magazine #156, April 2021, Page 16.)
  • Autore
  • Modello inviato da Gary Cowans. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

Letteratura

Il modello Power Amplifier and Plate Supply è documentato nella seguente letteratura.

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