3634 2-Stage Audio Amplifier

Atwater Kent Mfg. Co.; Philadelphia, USA

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  • Year
  • 1922
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 187049

 Technical Specifications

  • Number of Tubes
  • 2
  • Main principle
  • Audio-Amplification; 2 AF stage(s)
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: 3634 2-Stage Audio Amplifier - Atwater Kent Mfg. Co.;
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 5.75 x 3 x 5.75 inch / 146 x 76 x 146 mm
  • Notes
  • The 2-Stage Audio Amplifier part #3634 was Atwater Kent's first attempt at a radio part with more than one active electrical component specifically two audio transformers mounted in the metal can and potted in a tar-like substance. These used a 2 ohm rheostat to control the filaments of the UV201 1 amp tubes. There were two versions of the 3634 amp. The first version had all knurled thumb nuts for connections and was never used on a production AK breadboard. The Type 2 3634 was identical to the first except posts were installed for audio output so more than one person could hook up phones to the unit. The Type 2 3634 was used on the 3955 and the 3975 production breadboards.
  • Literature/Schematics (1)
  • Radio Age Newsletter February 2007
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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The model 3634 is part of the collections of the following members.

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