Summary
High mu triode. Used as a detector and in resistance-coupled amplifiers. 4.0 volt directly heated cathode. Designed for battery use, with filament current being only 0.1 amp. plate volts of 150 and amplification factor of 40. used for both amplifying and detection.
Physical Description
Glass bulb mostly removed with European style 4 pin base mounted on display block.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from C. G. McGlinn, 19 Jan 1949
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Manufacturer
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Inscriptions
On pinch: H4 On display block: Brief description of the 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
95 mm (Length), 38 mm (Outside Diameter)
Dimensions not including display blck
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Keywords