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DH 7-91

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BrandPHILIPS
ClassCathode Ray Tube
BaseLoctal 9p
Filament6.3V @ 550mA

Construction

Primary TypeCRT
EnvelopeGlass
SectionsSingle gun

Filament / Heater

Heater NotesIndirect heating by A.C. or D.C.; parallel supply

Absolute Maximum Ratings

Plate Voltage1500 V
Plate Dissipation0.003 W
Grid 2 Voltage1500 V
Grid 1 Voltage-200 V

Audio Performance

Key Features
  • High sensitivity
  • Short persistence
  • Direct viewing
  • Symmetrical or asymmetrical deflection

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Symmetrical Operation1000V----

Application Notes

For optimum focus with symmetrical operation, the average potentials of the deflection plates and g2,g4 should be equal. With asymmetrical operation the potential of any deflection plate should not differ from Vg2,g4 by more than the deflection voltage.

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