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Title: Five-electrode valve [Go to resource]
Description: Five-electrode valve or pentode. Mullard type PM22 1928. Early pentode valve c 1927/8. Magnesium getter. Screw terminal for screen grid on British B4 base. Format: text/html License: http://creativecommons.org/licenses/by-nc-sa/3.0/ Rights holder: University College London Subjects: Electrical engineering
Electronic engineeringSource: UCL Museums Creator: Mullard Identifier: http://www.ucl.ac.uk/museums/objects/LDU... Language: en-GB Format: text/html Go to resource More Like this...
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