Component Bridge B.121

Wayne Kerr; New Malden, England

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  • Year
  • 1955 ?
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 353834

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

 Technical Specifications

  • Number of Tubes
  • 2
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Component Bridge B.121 - Wayne Kerr; New Malden,
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 17.5 x 10 x 10.5 inch / 445 x 254 x 267 mm
  • Notes

  • The B.121 is a mid‑1950s universal component bridge intended for laboratory and service applications. It provides wide measurement ranges for resistance, capacitance and inductance, using a single EM34 magic‑eye valve as the null indicator. The instrument supports 3‑terminal measurements and was marketed as a moderately priced precision bridge within Wayne Kerr’s expanding post‑war test‑equipment line.

    • Resistance: 3 Ω to 1,000 MΩ.
    • Capacitance: 1 pF to 1,000 mF.
    • Inductance: 100 mH to 10,000 H.
  • Net weight (2.2 lb = 1 kg)
  • 15 lb 0 oz (15 lb) / 6.810 kg
  • Mentioned in
  • -- Original prospect or advert (Electronic Engineering, September 1955. Page 25.)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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