1725A
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BrandPhilips
ClassGas-filled Rectifier
Base40465
Construction
Primary TypeGas-filled
Rectifier TypeDouble-anode
EnvelopeGlass
Sections2
Filament / Heater
MaterialOxide-coated
Warm-up Time15s
Absolute Maximum Ratings
Plate Voltage470 V
Cathode Current1300 mA
Audio Performance
Key Features
- Gas-filled
- Double-anode
- Directly heated
- Oxide-coated filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Circuit 2 | 150V | - | - | - | 650mA |
Application Notes
Specifically designed for magnetic chucks (1.3 A per valve). The screen must be connected to the cathode via a resistor of 10 kOhms, 0.5 W. Mounting position is vertical with base down.
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