Summary
Electronic valve (twin triode), Type 12BH7, manufactured in Japan for Amalgamated Wireless Valve Co. Pty. Ltd, in original packaging. Used as spare part for the MUDPAC analogue computer. This valve was used in the third (output) stage of the operational amplifier modules.
Physical Description
Tubular glass bulb with exhaust tip on top with standard nine pin miniature base. Cardboard box with blue and red glossy background; red, white and blue printed text.
More Information
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Collection Names
Melbourne University Dual Package Analogue Computer (MUDPAC) Collection
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Collecting Areas
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Acquisition Information
Donation from Electrical & Electronic Engineering Department, University of Melbourne (The), 02 Dec 1987
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Manufacturer
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Inscriptions
On bulb: ' AWV / JAPAN ', ' 12BH7A ' On box: ' Super / RADIOTRON / AWV / RADIO / VALVE / AMALGAMATED / WIRELESS VALVE / CO. PTY. LTD. ', ' Super / RADIOTRON / 12BH7 ' Inside box, printed: ' 69516 '
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
21 mm (Width), 21 mm (Depth), 91 mm (Height)
Above dimensions are for the box.
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Part Dimensions
69 mm (Height), 20 mm (Outside Diameter)
Dimensions for valve only.
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Keywords
Electronics, Analogue Computers, Computers, Computer Technology, Electronic Engineering, Thermionic Electron Valves, Computer Engineering, Computer Hardware, MUDPAC (Computer)
