A47-25W
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BrandBrimar
ClassTelevision Picture Tube
BaseB8H
Filament6.3V @ 300mA
Construction
Primary TypeCathode Ray Tube
EnvelopeRectangular Reinforced Envelope
Base MaterialGlass
Sections1
Filament / Heater
Heater NotesSeries heater chain connection recommended at chassis end
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 2 Voltage700 V
H-C Voltage250 V
Audio Performance
Key Features
- Aluminised Screen
- Electrostatic Focus
- Magnetic Deflection
- Grey Glass 50% Transmission
- Non Ion Trap Straight Gun
- Integral Mounting Lugs
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid Modulation | 18000V | - | - | - | 0.35mA |
| Cathode Modulation | 18000V | - | - | - | 0.35mA |
Application Notes
X-ray radiation shielding may be necessary if operated above 16 kV. The metal shell M2 must be connected to chassis via a 2 Megohm resistor.
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