• Year
  • 1962 ?
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 338354

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Wave bands
  • - without
  • Power type and voltage
  • Dry Batteries / 9 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Conductivity Bridge - Doran Instrument Company Ltd.;
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes
  • This instrument is made to enable measurements of resistance and conductance in laboratory or in field. The bridge network is complete with a 1 kHz (nominal) oscillator, a null amplifier, a bi-directional null balance indicator and a 9 V dry battery. 
    The total range of the instrument is 0 to 10 MΩ for resistance and 0 to 1 Ω-1 for conductance, covered in seven steps each.
    The accuracy of the measurement is ± 2%.

    All particular information in the attached original article.

  • Mentioned in
  • -- Original-techn. papers. (Electronic Engineering, volume 34 year 1962, June)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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