Tube-number record

GY501

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BrandTelefunken

ClassHigh-voltage half-wave rectifier

BaseMagnoval

Filament3.15 V @ 400 mA

Construction

Primary TypeDiode

Rectifier Typehalf-wave

Envelopeglass

Sectionssingle

Filament / Heater

Heater NotesIndirectly heated, parallel supply

Absolute Maximum Ratings

Plate Voltage27500 V

Cathode Current1.7 mA

Audio Performance

Key Features

Indirectly heated
X-ray production warning
Anti-spraying ring support
Any mounting position

Typical Operation

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Rectification of line flyback pulses	25000 V	—	—	—	1.5 mA

Application Notes

The filament voltage must be adjusted to the nominal value at the expected mean DC load. Negative voltage peaks caused by decay of oscillation must be considered.

Datasheets

Datasheet: GY501.pdf

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

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