Tube-number record
ECH 83
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BrandPhilips
ClassTriode-Heptode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
SectionsTriode-Heptode
Filament / Heater
Heater NotesIndirect heating; suitable for series or parallel supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation0.8 W
Grid 1 Voltage-50 V
Cathode Current6.5 mA
H-C Voltage150 V
Audio Performance
Key Features
- Low voltage operation (6V/12V)
- Intended for car radio sets
- Noval base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Heptode Mixer (Car Radio) | 25 V | 450 | 500000 | — | 0.55 mA |
| Heptode RF/IF Amplifier | 25 V | 1500 | 200000 | — | 1.25 mA |
| Triode Section Typical | 25 V | 2200 | — | 20 | 2 mA |
Application Notes
Primarily intended for use as a mixer in car-radio sets. The tube can be directly operated from a 6V or 12V storage battery.
Datasheets
Datasheet: ECH83.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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