SP.61
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BrandMazda
ClassH.F. Pentode
BaseMazda Octal
Filament6.3V @ 600mA
Construction
Primary TypePentode
EnvelopeMetallised
Sections1
Filament / Heater
Heater NotesA.C. Mains
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage250 V
Audio Performance
Key Features
- Screened H.F. Pentode
- Metallised bulb
- Mazda octal base
- Small dimensions
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. Amplifier | 200V | 8500 | - | - | 8.5mA |
| H.F. Amplifier | 200V | 8500 | - | - | 10.9mA |
| H.F. Amplifier | 250V | 8400 | - | - | 11mA |
Application Notes
Specifically designed for H.F. and I.F. stages of television receivers with low input loss at high frequencies. Suitable for video output with loads down to 2600-3000 ohms. Capacity change due to space charge can be minimized by biasing the suppressor grid.
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