4030 One Stage Audio Amplifier

Atwater Kent Mfg. Co.; Philadelphia, USA

  • Año
  • 1923
  • Categoría
  • Amplificador de audio o mezclador
  • Radiomuseum.org ID
  • 187048

 Especificaciones técnicas

  • Numero de valvulas
  • 1
  • Principio principal
  • Amplificador de Audio; 1 Etapas de AF
  • Gama de ondas
  • - no hay
  • Tensión de funcionamiento
  • Baterías recargables o pilas
  • Altavoz
  • - Este modelo usa altavoz exterior (1 o más).
  • Material
  • Metálico con lámparas a la vista.
  • de Radiomuseum.org
  • Modelo: 4030 One Stage Audio Amplifier - Atwater Kent Mfg. Co.;
  • Forma
  • Formas varias descritas en notas aparte.
  • Ancho, altura, profundidad
  • 5.75 x 3 x 5.75 inch / 146 x 76 x 146 mm
  • Anotaciones
  • The one stage audio amplifier came after the two stage AK audio amplifiers. The unit was assigned the part number 4030 by Atwater Kent. The one-stage unit consisted of an audio transformer insulated from the metal case with a sheet of phenolic and encased in a tar-like substance. The filament was controlled by a 2 ohm rheostat. there were three different variations of this amplifier. The first version used a 2-Stage tag with the 2 painted over with black paint. The second version had the 2 milled off and a 1 stamped in it's place. The last version had a 1-Stage id tag like the 2-Stage amp with the 1 raised up. This part was sold to hobbyists who wanted another stage of audio amplification. It was never used in a AK production radio.
  • Documentación / Esquemas (1)
  • Radio Age Newsletter February 2007
  • Autor
  • Modelo creado por Alan Larsen. Ver en "Modificar Ficha" los participantes posteriores.

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