Tube-number record
ECH 200
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BrandCIFTE / MAZDA BELVU
ClassTriode-Heptode
BaseSpecial / none
Filament6.3 V @ 435 mA
Construction
Primary TypeMulti-section
EnvelopeA22-2
Sections2
Filament / Heater
Heater NotesIndirect heating, parallel supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.5 W
Grid 2 Voltage50 V
Grid 1 Voltage-200 V
Cathode Current20 mA
H-C Voltage100 V
Audio Performance
Key Features
- Synchronization signal separator
- Synchronization signal amplifier
- Television application
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 100 V | 8800 | — | 50 | 9 mA |
| Heptode Section | 14 V | — | — | — | 1.5 mA |
Application Notes
Specifically designed for TV synchronization signal separation and amplification according to CCIR standards.
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