Summary
Beam tetrode designed for use in the output stage of radios and other apparatus requiring about 5 watts of audio. 6.3 V indirectly heated cathode.
Physical Description
Shouldered glass bulb, sectioned to display the internal structure. Octal base with 7 pins present. Mounted on display block with an intact example of the same type (ST 22203).
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from J. C. Liddy, 31 Oct 1947
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Manufacturer
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Inscriptions
Base: PHILIPS/"Miniwatt"/MADE IN AUSTRALIA/D66/(2 over 4 Excise mark) Display block: Brief Description
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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
117 mm (Length), 44 mm (Outside Diameter)
Not including display block.
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Keywords
