TubeDatabase
  • Tubes
  • Testers
  • Companies
  • Submit
  • About

Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
DisclaimerA–Z indexSubmit a tube
14F7 vacuum tube outline illustration

Tube-number record

14F7

0 archive entries

14F7 is a tube type in the TubeDatabase archive (class: Double Triode). Recorded specifications: brand TUNG-SOL, year 1949, construction Dual triode, base Lock-in, socket Loctal, maximum plate voltage 300 V, and maximum plate dissipation 1 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassDouble Triode
BaseLoctal
Filament12.6 V @ 150 mA

Construction

Primary TypeDual triode
EnvelopeT-9 Glass
Base MaterialLock-in
Sections2

Filament / Heater

Heater NotesAC OR DC

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier (Unit 1 or 2)100 V112562000700.65 mA
Class A1 Amplifier (Unit 1 or 2)250 V160044000702.3 mA

Application Notes

Designed for use as a voltage amplifier in resistance coupled cascade or phase inverter service.

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Plate Voltage300 V
    Plate Dissipation1 W
    H-C Voltage90 V

    Audio Performance

    Key Features
    • Lock-in construction
    • Coated unipotential cathode
    • T-9 glass bulb