Image: RCA OA2

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Description: RCA OA2 Gas-filled, glow-discharge voltage regulator tube
Title: RCA OA2
Credit: Own work
Author: Olli Niemitalo
Usage Terms: Creative Commons Zero, Public Domain Dedication
License: CC0
License Link: http://creativecommons.org/publicdomain/zero/1.0/deed.en
Attribution Required?: No

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