Summary
Two electronic valves, Miniwatt Type 12AX7, manufactured by Philips in original packaging. Used as a spare parts for the MUDPAC analogue computer. These valves were used in the second stage of the operational amplifier modules and in the integrator modules, they may also have been used in the power supply.
Physical Description
Tubular glass bulb with exhaust tip on top with standard nine pin miniature base. Cardboard box with yellow glossy background and blue band; red, blue, black and white printed text. Philips corporate symbol. Illustration of an electronic valve. Extensive list of numbers printed on the inside of the box.
More Information
-
Collection Names
Melbourne University Dual Package Analogue Computer (MUDPAC) Collection
-
Collecting Areas
-
Acquisition Information
Donation from Electrical & Electronic Engineering Department, University of Melbourne (The), 02 Dec 1987
-
Manufacturer
-
Inscriptions
On bulbs: ' 'Miniwatt' / MADE IN AUSTRALIA ', ' 206 ', ' 12AX7 ' On boxes, printed: ' Philips ', ' 'Miniwatt' / ELECTRON / VALVE ', '12AX7 / MADE IN AUSTRALIA / 'Miniwatt' ' On boxes, handwritten: ' From / Geo PR '
-
Classification
-
Category
-
Discipline
-
Type of item
-
Overall Dimensions
22 mm (Width), 22 mm (Depth), 62 mm (Height)
Above dimensions are for each box.
-
Part Dimensions
55 mm (Height), 20 mm (Outside Diameter)
Dimensions for each valve only.
-
Keywords
Electronics, Analogue Computers, Computers, Computer Technology, Electronic Engineering, Thermionic Electron Valves, Computer Engineering, Computer Hardware, MUDPAC (Computer)
