Summary
Electronic valve, Type M8137, manufactured by Mullard for Philips in original packaging. Used as a spare parts for the MUDPAC analogue computer. This valve was used in the second stage of the operational amplifier modules and in the integrator modules. It was a special quality valve, equivalent to the 12AX7 but with more tightly controlled characteristics.
Physical Description
Tubular glass bulb with exhaust tip on top with standard nine pin miniature base. Cardboard box with yellow matt background, blue band and red lines; black, 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: ' PHILIPS / M8137 / MADE IN / GREAT BRITAIN ' On box: ' PHILIPS ', ' M8137 '
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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), 90 mm (Height)
Above dimensions are for the box.
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Part Dimensions
52 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)
