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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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Circuit 2150V---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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