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Tube Database (7,341 tube types · 1,270 archive entries)

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

AZ4

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BrandPhilips
ClassRectifier
BaseSide-contact (P-base)

Construction

Primary TypeHigh vacuum
Rectifier TypeFull-wave
EnvelopeGlass
Sections2

Filament / Heater

MaterialOxide-coated

Absolute Maximum Ratings

Plate Voltage500 V
Cathode Current200 mA

Audio Performance

Key Features
  • High vacuum
  • Full-wave rectifying valve
  • Direct heating by A.C.

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Full-wave rectification300 V—60—200 mA
Full-wave rectification400 V—80—150 mA
Full-wave rectification500 V—100—120 mA

Application Notes

Operating characteristics include varying plate resistance requirements (Rt) based on supply voltage to protect the valve.

Datasheets

Datasheet: AZ4.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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