Summary
Triode used as an amplifier and detector in radios from 1929 until the early 1930s. Manufactured by: M. O. Valve Company, England.
This was similar to the L610 (ST 028689) but with twice the amplification factor (30 compared with 15). Equivalent to CV3501.
6 volt directly heated cathode. Filament 6 Volts at 100 mA. Anode 150 Volts. Mutual Conductance 1000.
Physical Description
Four pin USA style base. Globe style bulb. Marking on glass almost illegible but faint pencil marks on base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from G. H. Williams, 12 Jun 1973
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Manufacturer
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Inscriptions
Bulb: Made in England/HL610 (indistinct)/Patented/Osram (paper sticker) On base: Pencil marks: Hl610
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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
104 mm (Length), 46 mm (Outside Diameter)
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Overall Dimensions
105 mm (Length), 47 mm (Circumference)
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References
Fin Stewart: History of GEC and the Marconi Osram Valve, 1998, P. 79
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