Tube-number record
E 499
0 archive entries
E 499 is a tube type in the TubeDatabase archive (class: High-mu Triode). Recorded specifications: brand Philips Miniwatt, construction Triode, socket O-base, maximum plate voltage 400 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
BrandPhilips Miniwatt
ClassHigh-mu Triode
BaseO-base
Filament4 V @ 1000 mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation1.5 W
Grid 1 Voltage-1.3 V
Cathode Current15 mA
H-C Voltage50 V
Audio Performance
Key Features
- High amplification factor
- Anode bend detector capability
- Resistance-capacitance coupling optimized
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| L.F. amplifier with resistance coupling (0.3 M.Ohm external) | 200 V | 4000 | 100000 | 99 | 0.2 mA |
| L.F. amplifier with resistance coupling (1.0 M.Ohm external) | 200 V | — | 330000 | — | 0.08 mA |
Application Notes
Commonly used as an anode bend detector or L.F. amplifier with resistance coupling.
Datasheets
Datasheet: E499.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results