Tube-number record
5738
0 archive entries
BrandFederal Telecommunication Laboratories, Inc.
ClassCommutator Tube
BaseDiheptal
Filament6.3 V @ 0.6 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeGlass
Sections25-circuit
Filament / Heater
Heater NotesCoated unipotential cathode
Absolute Maximum Ratings
Plate Voltage2000 V
Grid 2 Voltage2000 V
Grid 1 Voltage-75 V
Cathode Current1 mA
Audio Performance
Key Features
- 25-circuit electron-beam
- Single stage of secondary electron multiplication
- Electrostatic focus
- Electrostatic deflection
- Circular array of 25 secondary emission dynodes
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Circular Sweep | 1500 V | — | — | — | 0.5 mA |
0 results