Tube-number record
ECH 2
0 archive entries
ECH 2 is a tube type in the TubeDatabase archive (class: Triode-Heptode). Recorded specifications: brand Philips, construction Multi-section, maximum plate voltage 300 V, and maximum plate dissipation 1 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassTriode-Heptode
Filament6.3 V @ 0.95 mA
Construction
Primary TypeMulti-section
Sections2
Filament / Heater
Heater NotesIndirect heating, parallel filament supply
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Heptode section as frequency converter | 250 V | 750 | 1500000 | — | 3.25 mA |
| Triode section as oscillator | 100 V | 5500 | — | 17.5 | 9.5 mA |
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