7459
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BrandAmperex
ClassTransmitting Triode
BaseIndustrial
Construction
Primary Typetriode
EnvelopeGlass and Metal
Base MaterialMetal pins
Sectionssingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage6500 V
Plate Dissipation4000 W
Grid 1 Voltage-1100 V
Cathode Current1800 mA
Audio Performance
Key Features
- forced-air-cooled
- specially processed grid
- high grid current rating
- extremely stable characteristics
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier and Modulator - Class B (per tube) | 5000V | 15000 | - | 32 | 1250mA |
| RF Power Amplifier Class C - Telephony | 5000V | - | - | - | 1500mA |
| RF Power Amplifier and Oscillator Class C - Telegraphy - FM | 6000V | - | - | - | 1500mA |
Application Notes
The filament center tap pin must not be used for filament current supply. Ratings apply up to 110 megacycles; for use up to 220 Mc/s, consult engineering.
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