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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, plastic (unidentified), electronic components and textile
- Measurements:
-
overall: 230 mm x 490 mm x 145 mm, 10.5 kg
- type:
- amplifier
