Tube-number record
HL210
0 archive entries
HL210 is a tube type in the TubeDatabase archive (class: Medium Magnification Triode). Recorded specifications: brand Marconi, construction Triode, and maximum plate voltage 150 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassMedium Magnification Triode
Construction
Primary TypeTriode
EnvelopeSmall bulb
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Audio Performance
Key Features
- Medium Magnification
- Small bulb for portable sets
- High efficiency
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| General Purpose / Amplifier | 100 V | 870 | 23000 | 20 | — |
Application Notes
Particularly recommended for portable sets in which space is limited. Suitable for grid leak detector, anode bend detector, L.F. amplifier, and H.F. amplifier.
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