• Year
  • 1960 ?
  • Category
  • Power supply/conditioner or battery or charger 
  • Radiomuseum.org ID
  • 283044

 Technical Specifications

  • Number of Transistors
  • 1
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 220 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Netzgerät NUK - Neumann, Georg, Laboratorium f
  • Shape
  • Rack
  • Dimensions (WHD)
  • 45 x 132 x 270 mm / 1.8 x 5.2 x 10.6 inch
  • Notes
  • First generation power supply for Neumann U-67 microphone. Plug-in version to be installed in the mixing console. 

    Output:

    • + 210 V 1mA
    • -6V 300 mA

    Special "stabilyt" voltage reference (in fact, a nickel-cadmium cell, a Georg Neumann patent) used in the heater voltage stabilizer. 

    2 indicator lamps:

    • main power on (neon lamp)
    • microphone connected (=heater current on)
  • Author
  • Model page created by Matti Adolfsen. See "Data change" for further contributors.

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