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

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Tube-number record

EL506

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BrandBrimar
ClassPower Pentode
BaseMagnoval
Filament6.3 V @ 800 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage550 V
Plate Dissipation19 W
Grid 2 Voltage440 V
Cathode Current85 mA
H-C Voltage200 V

Audio Performance

Typical THD2.5%
Power Output23 W
Key Features
  • Preliminary Data
  • High-fidelity output stage intended

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Single-ended300 V1020025000—60 mA
Class AB1 Push-Pull (Fixed Bias)300 V———86 mA
Class AB1 Push-Pull (Fixed Bias)450 V———

Application Notes

The control grid voltage should be adjusted in each case to give Ia(o) = 60 mA when other voltages are at their nominal values.

Datasheets

Datasheet: EL506.pdf

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

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    66 mA