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RX21A

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BrandEimac
ClassHalf-wave mercury vapor rectifier
BaseMedium 5-pin

Construction

Primary TypeRectifier
Rectifier TypeMercury Vapor
EnvelopeGlass
SectionsSingle

Filament / Heater

MaterialCoated, shielded ribbon
Warm-up Time30s

Absolute Maximum Ratings

Plate Voltage11000 V
Cathode Current750 mA

Audio Performance

Key Features
  • Shielded ribbon filament
  • Edgewise-wound
  • Large emission reserve
  • Long life
  • Low applied voltage conduction

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Rectifier15V---750mA

Application Notes

The RX21A must be mounted vertically, base down. Adequate air circulation is required. Condensed mercury temperature should be maintained at 40 degrees plus or minus 5 degrees C. R-f filtering and shielding may be necessary in high-frequency fields.

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