5514
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BrandHytron
ClassTransmitting Triode
Base4-pin medium
Construction
Primary TypeTriode
EnvelopeST-19
Base MaterialPhenolic
SectionsSingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage1500 V
Plate Dissipation65 W
Grid 1 Voltage-200 V
Cathode Current175 mA
Audio Performance
Typical THD2.5%
Power Output230 W
Key Features
- Zirconium-coated graphite plate
- Dual base connections to the grid
- Zero-bias operation up to 1250V
- High-mu
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 1000V | 5100 | - | 145 | 175mA |
| Class B Audio (2 tubes) | 1000V | - | - | 145 | 300mA |
Application Notes
The 5514 is a 65-watt, high-mu, all-purpose transmitting triode. High amplification factor permits operation at plate voltages up to 1250 volts without fixed bias. Dual grid leads reduce lead inductance at high frequencies.
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