Tube-number record
19C8
0 archive entries
19C8 is a tube type in the TubeDatabase archive (class: Triple-Diode Triode). Recorded specifications: brand TUNG-SOL, year 1950, construction Multi-section, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 1 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassTriple-Diode Triode
BaseNoval (B9A)
Filament18.9 V @ 150 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections3 Diodes, 1 Triode
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier - Triode Unit | 100 V | 1250 | 80100 | 100 | 0.5 mA |
Application Notes
One of the three diode plates has an independent cathode providing satisfactory operation in balanced low impedance detector circuits.
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