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D7-220GH

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BrandMullard
ClassInstrument Cathode-Ray Tube
BaseJEDEC B12-246
Filament6.3V @ 300mA

Construction

Primary TypeMonoaccelerator
EnvelopeRectangular flat faced
SectionsSingle

Filament / Heater

Heater NotesIndirect by a.c. or d.c.; parallel supply

Absolute Maximum Ratings

Plate Voltage2200 V
Plate Dissipation0.003 W
Grid 1 Voltage-200 V
H-C Voltage125 V

Audio Performance

Key Features
  • 7 cm diagonal
  • Rectangular flat faced
  • Monoaccelerator
  • Electrostatic focusing
  • Double electrostatic deflection
  • Integrated rotation coil

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical1000V---0.01mA

Application Notes

Primarily intended for use in inexpensive oscilloscopes and monitoring devices. Low impedance deflection plate drive is desirable if full deflection capabilities are used.

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