4GS8
0 Tubes in archive
BrandTung-Sol
ClassDual Pentode
Base9-pin Miniature
Filament4.2V @ 450mA
Construction
Primary TypeDual Pentode
EnvelopeGlass
Base MaterialGlass
Sections2
Filament / Heater
MaterialCoated Unipotential Cathode
Warm-up Time11s
Heater NotesCoated Unipotential Cathode
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.1 W
Grid 2 Voltage150 V
Grid 1 Voltage-50 V
Cathode Current12 mA
H-C Voltage200 V
Audio Performance
Key Features
- Separate Plate
- Separate #3 Grid
- Miniature construction
- Sync separator-clipper
- AGC tube
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Both sections operating | 100V | - | - | - | 2mA |
| Each section separately | 100V | 270 | - | - | 2mA |
Application Notes
Primarily intended for service as a combined sync separator-clipper and AGC tube in television receivers.
Sort by
Showing 1 to 0 of 0 results