Tube-number record
199
0 archive entries
199 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: construction Triode, socket 4-pin, and maximum plate voltage 90 V. The archive does not yet hold a photographed example of this type.
ClassTriode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage90 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 90 V | 425 | 15500 | 6.6 | 2.5 mA |
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