• Year
  • 1929 ?
  • Category
  • Power supply/conditioner or battery or charger 
  • Radiomuseum.org ID
  • 57994

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 1
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • from Radiomuseum.org
  • Model: SM-650 B - Silver - Marshall; Chicago, IL
  • Notes
  • +B voltage = 45 V, 90 V and high voltage.
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

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