Summary
High mu twin triode developed for audio work circa 1950; it remained in wide use until the 1970s. It is still produced in 2011 for the audiophile market.
Known as the ECC83 in Europe.
12.6 or 6.3 volt indirectly heated cathode.
Manufacturer: Philips, Hendon, South Australia
Physical Description
Tubular glass bulb on nine pin miniature glass button base with top exhaust tip. Valve is contained in rectangular yellow and blue coloured cardboard box with fixed internal cardboard packing.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Transfer from Science Museum of Victoria (SMV), 01 Aug 1971
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Manufacturer
Philips Electrical Industries Pty. Ltd., Hendon, South Australia, Australia, 1968
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Inscriptions
Bulb: 12AX7/"Miniwatt"/MADE IN AUSTRALIA/485/16/C8J All sides of box: (Philips logo)/"Miniwatt"/ELECTRON VALVE End of box: 12AX7/MADE IN AUSTRALIA/"Miniwatt" End of box: "Miniwatt"/ELECTRON/VALVE
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Brand Names
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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
65 mm (Width), 24 mm (Depth), 24 mm (Height)
Dimensions of box containing valve.
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Part Dimensions
54 mm (Length), 20 mm (Outside Diameter)
Dimensions of valve only.
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Keywords