BBC OBA/9 Trap valve amplifier

Made:
1952 in United Kingdom
maker:
British Broadcasting Corporation
BBC OBA/9 Trap Valve Amplifier

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BBC OBA/9 Trap Valve Amplifier
Science Museum Group
© The Board of Trustees of the Science Museum

BBC OBA/9 Trap valve amplifier, 1952, used by the BBC.

This is a cathode follower amplifier with two outputs that could feed a signal to both headphones and loudspeakers, for example. It was developed in the fifties as part of a suite of equipment – mixer, power supply, distribution unit etc. - that could fit together on a trolley, making it suitable for the needs of outside broadcast engineers. The OBA/9, was significantly smaller and lighter than its predecessor (the OBA/8), to help with portability.

Details

Category:
Television
Collection:
BBC Heritage Collection
Object Number:
2012-5118/14
Materials:
aluminium alloy, electronic components, plastic (unidentified) and textile
Measurements:
overall: 230 mm x 490 mm x 145 mm, 10.5 kg
type:
amplifier
taxonomy:
  • furnishing and equipment
  • tools & equipment