fbpx
Wikipedia

7AK7

The 7AK7 is a pentode vacuum tube (thermionic valve). According to its manufacturer, Sylvania, it was "designed for service in electronic computers".[1]

7AK7
ClassificationPentode
ServiceDigital computers
Height3+532 in (80 mm)
Diameter1+316 in (30 mm)
Cathode
Cathode typeCoated Unipotential
Heater voltage7.0 V (6.3 V nominal)
Heater current800 mA
Anode
Max dissipation Watts8.5 W
Max voltage200 V
Socket connections
8V-L-O

Pin 1 – Heater
Pin 2 – Anode (Plate)
Pin 3 – Grid 2 (Screen)
Pin 4 – Grid 3 (Suppressor)
Pin 5 – n.c.
Pin 6 – Grid 1 (Control)
Pin 7 – Cathode

Pin 8 – Heater
References
7AK7 vacuum tubes in a 1956 UNIVAC I computer

The tube was developed in 1948,[2] designed at the request of L. D. Wilson for use in the Whirlwind computer.[3] Significant attention was directed towards its manufacturing process in order to ensure the part's reliability.[4] Dubbed the "computer tube",[5] it became a popular tube for computers for a while.[2] IBM, however, switched to more compact miniature tubes, starting with the IBM 604 in 1948.

See also edit

  • 5965, a triode developed for early digital computers
  • 25L6, a tetrode found in early computers

References edit

  1. ^ Sylvania. . July 1953.
  2. ^ a b Green, Tom (2010). Bright Boys: The Making of Information Technology. CRC Press. p. 141. ISBN 978-1568814766.
  3. ^ Wilson, L. D. (1954). "Tube Reliability in the Univac". Proceedings of the National Electronics Conference. Vol. 10. National Engineering Conference, Incorporated. pp. 699–703.
  4. ^ David R. Brown, T. F. Clough, and P. Youtz. Investigation of 7AK7 Processing, Emporium, Pa., March 2, 1948. URI: http://hdl.handle.net/1721.3/38986
  5. ^ Haigh, Thomas; Priestley, Mark; Ropefir, Crispin (2016). ENIAC in Action: Making and Remaking the Modern Computer. MIT Press. p. 211. ISBN 9780262334419.

7ak7, pentode, vacuum, tube, thermionic, valve, according, manufacturer, sylvania, designed, service, electronic, computers, classificationpentodeservicedigital, computersheight3, diameter1, cathodecathode, typecoated, unipotentialheater, voltage7, nominal, he. The 7AK7 is a pentode vacuum tube thermionic valve According to its manufacturer Sylvania it was designed for service in electronic computers 1 7AK7ClassificationPentodeServiceDigital computersHeight3 5 32 in 80 mm Diameter1 3 16 in 30 mm CathodeCathode typeCoated UnipotentialHeater voltage7 0 V 6 3 V nominal Heater current800 mAAnodeMax dissipation Watts8 5 WMax voltage200 VSocket connections8V L OPin 1 Heater Pin 2 Anode Plate Pin 3 Grid 2 Screen Pin 4 Grid 3 Suppressor Pin 5 n c Pin 6 Grid 1 Control Pin 7 Cathode Pin 8 HeaterReferenceshttps web archive org web 20221114011216 http www nj7p org Tubes PDFs Frank 137 Sylvania 7AK7 pdf 7AK7 vacuum tubes in a 1956 UNIVAC I computerThe tube was developed in 1948 2 designed at the request of L D Wilson for use in the Whirlwind computer 3 Significant attention was directed towards its manufacturing process in order to ensure the part s reliability 4 Dubbed the computer tube 5 it became a popular tube for computers for a while 2 IBM however switched to more compact miniature tubes starting with the IBM 604 in 1948 See also edit5965 a triode developed for early digital computers 25L6 a tetrode found in early computersReferences edit Sylvania Engineering Data Service 7AK7 July 1953 a b Green Tom 2010 Bright Boys The Making of Information Technology CRC Press p 141 ISBN 978 1568814766 Wilson L D 1954 Tube Reliability in the Univac Proceedings of the National Electronics Conference Vol 10 National Engineering Conference Incorporated pp 699 703 David R Brown T F Clough and P Youtz Investigation of 7AK7 Processing Emporium Pa March 2 1948 URI http hdl handle net 1721 3 38986 Haigh Thomas Priestley Mark Ropefir Crispin 2016 ENIAC in Action Making and Remaking the Modern Computer MIT Press p 211 ISBN 9780262334419 nbsp This computer hardware article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title 7AK7 amp oldid 1206916470, wikipedia, wiki, book, books, library,

article

, read, download, free, free download, mp3, video, mp4, 3gp, jpg, jpeg, gif, png, picture, music, song, movie, book, game, games.