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Equipment, Therapeutic, Hearing Aids Battery driven hearing aid, 1950-1970

IMAGE number
UIS5101071
Image title
Equipment, Therapeutic, Hearing Aids Battery driven hearing aid, 1950-1970
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Location
Science Museum, London, UK
Medium
object
Image description

Equipment, Therapeutic, Hearing Aids Battery driven hearing aid, 1950-1970. The transition to battery powered hearing aids occurred in the early 20th century. Initially the battery packs were cumbersome and had to be carried in separate boxes or strapped to the individuals leg. The early aids were carbon type, followed by vacuum tube aids introduced in 1939. In 1944, the first vacuum tube hearing aid was developed which contained the battery inside the aid. The first transistor hearing aid was introduced in the 1950s. With the development of the transistor, the aids were able to become smaller and more powerful. The use of microchips for programming hearing aids was introduced in 1985 to better meet individual needs. ©SSPL/Science Museum

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Largest available format 3422 × 2639 px 1 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB] Online Purchase
Large 3422 × 2639 px 290 × 223 mm 947 KB
Medium 1024 × 790 px 87 × 67 mm 966 KB

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