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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

2X2/879

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BrandSylvania
ClassRectifier
BaseSpecial / none

Construction

Primary TypeRectifier
Rectifier TypeHalf-Wave
EnvelopeST-12C
Sections1

Filament / Heater

MaterialOxide

Absolute Maximum Ratings

Plate Voltage4500 V
Cathode Current7.5 mA

Audio Performance

Key Features
  • High voltage
  • Half-wave rectifier
  • Oxide-coated filament
  • Top cap plate connection

Application Notes

Used primarily with cathode ray tubes in television. Requires adequate ventilation as the bulb becomes very hot during operation.

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