Tube-number record
EZ81
0 archive entries
EZ81 is a tube type in the TubeDatabase archive (class: Full-wave Vacuum Rectifier). Recorded specifications: brand Philips, construction Rectifier, base Glass, socket Noval (B9A), and maximum plate voltage 450 V. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassFull-wave Vacuum Rectifier
BaseNoval (B9A)
Filament6.3 V @ 1 mA
Construction
Primary TypeRectifier
Rectifier TypeFull-wave
EnvelopeGlass
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesIndirect heating by A.C., parallel supply
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Capacitor input filter | 250 V | — | 150 | — | 160 mA |
| Capacitor input filter | 350 V | — | 250 | — | 150 mA |
| Capacitor input filter | 450 V | — | 310 | — | 100 mA |
Application Notes
The EZ81 is designed for use as a full-wave rectifier in radio receivers and audio amplifiers. It supports both capacitor and choke input filter configurations.
Datasheets
Datasheet: EZ81.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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