Transistorized audio-frequency telephone line amplifier, 1953

Made:
1953 in Post Office Research Station, Dollis Hill
maker:
Unknown

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Transistorized audio-frequency telephone line amplifier, probably designed and made at the Post Office Research Centre at Dollis Hill, London, England, 1953.

Very soon after the development of successful transistors in 1947, the Post Office Research Station at Dollis Hill, London, were working on their use in telephone repeaters (amplifiers). This is one of the earliest exploratory designs of transistorised audio-frequency telephone line amplifier and was probably made in 1953.

Details

Category:
Telecommunications
Materials:
metal (unknown) and plastic (unidentified)
Identifier:
1971-437
type:
amplifier
taxonomy:
  • furnishing and equipment
  • tools & equipment
credit:
Donated by BT Heritage and Archives