Williamson Output Transformer AF series

Red Line Equipment Pty. Ltd. (Swales & Swann); Melbourne, Victoria

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  • Year
  • 1948
  • Category
  • Radio part (not a module) 
  • Radiomuseum.org ID
  • 340032

 Technical Specifications

  • Wave bands
  • - without
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Williamson Output Transformer AF series - Red Line Equipment Pty. Ltd.
  • Notes

  • Williamson Output Transformer, AF series

    Designed for the Williamson Amplifier using two 807s in push-pull.

    Available as;

    AF8:  8Ω Voice coil
    AF15: 8Ω Voice coil
    AF10: 500Ω Line

    Specifications  
    Primary Impedance: 10,000 Ω
    Secondary Impedance: As above
    Frequency Response: Linear within 0.2 dB. 20 cps. to 30,000 cps
    Primary Inductance: (at low ac flux) not less than 125 Henries
    Leakage Inductance: 17 Millihenries
    Insertion Loss: 0.4 dB

    This transformer may be used to obtain a gain reduction of up to 25 dB across 4 Stages in a suitable negative feedback circuit.

     

  • Net weight (2.2 lb = 1 kg)
  • 7 lb (7 lb 0 oz) / 3.178 kg
  • Price in first year of sale
  • 6.00 AUS £
  • Mentioned in
  • -- Original prospect or advert (Australasian Radio World Mar 1948, Page 50.)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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