Summary
Low mu general purpose triode, used as a class A power output amplifier. Manufacturer: Telefunken. Germany.
Equivalent to Type APP4120.
4 volt indirectly heated cathode.
Physical Description
Conical bulb on 5 pin european style base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from I. E. Morton, 10 Mar 1972
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Manufacturer
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Inscriptions
Bulb: D.R.P./REN1104/Telefunken/4 Volt Base: 28322 (incorrect MV registration number)
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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
110 mm (Length), 45 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 444 Pages
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Keywords