SRS 551
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BrandVEB Werk für Fernsehelektronik Berlin
ClassSendepentode
Base9-OAS
Filament6.3V @ 2.1mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation60 W
Grid 2 Voltage600 V
Grid 1 Voltage-200 V
Cathode Current260 mA
H-C Voltage200 V
Audio Performance
Power Output155 W
Key Features
- Strahlungsgekühlt
- Oxidkatode
- UKW-Sender tauglich
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Values | 400V | 18000 | - | 20 | 400mA |
| RF Amplification Class C (100 MHz) | 900V | - | - | - | 200mA |
| RF Amplification Class C (<30 MHz) | 1000V | - | - | - | 215mA |
Application Notes
Used in transmitter amplifiers, VHF transmitters, modulator stages, and electromedical equipment.
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