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Specialized - Cathode Ray ·CathodeRay

31D12

Rectangular cathode-ray tube with 90-degree magnetic deflection and low-voltage electrostatic focusing, designed for industrial monitoring equipment. Its direct-view format provides process or equipment information in industrial systems.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 300 mA

Description

Rectangular cathode-ray tube with 90-degree magnetic deflection and low-voltage electrostatic focus for industrial monitoring equipment.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 0

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1961 AEI Industrial Valves

Published operating points and test conditions from this source.

SECTION 0

Cathode Ray

Other

  • MaximumSecondAndFourthAnodeVoltageDesignCentre

    15000 V

  • AbsoluteMaximumSecondAndFourthAnodeVoltage

    18000 V

  • MinimumSecondAndFourthAnodeVoltage

    8000 V

  • MaximumThirdAnodeVoltage

    700 V

  • MaximumFirstAnodeVoltage

    400 V

  • Maximum Heater Cathode Voltage

    200 V

  • Maximum Peak Heater Cathode Voltage

    400 V

  • TypicalSecondAndFourthAnodeVoltage

    12000 V

  • TypicalFirstAnodeVoltage

    300 V

  • TypicalThirdAnodeVoltageForFocus

    -200 V

  • GridBiasForCutoff

    -72 to -30 V

Capacitance

  • GridToAllCapacitance

    7 pF

  • Cathode To All Capacitance

    3 pF

  • FinalAnodesToExternalCoatingCapacitance

    400 pF

Data set 02

1961 Associated Electrical Industries

Published operating points and test conditions from this source.

SECTION 0

Cathode Ray

Other

  • MaximumSecondAndFourthAnodeVoltageDesignCentre

    15000 V

  • AbsoluteMaximumSecondAndFourthAnodeVoltage

    18000 V

  • MinimumSecondAndFourthAnodeVoltage

    8000 V

  • MaximumThirdAnodeVoltage

    700 V

  • MaximumFirstAnodeVoltage

    400 V

  • Maximum Heater Cathode Voltage

    200 V

  • Maximum Peak Heater Cathode Voltage

    400 V

  • TypicalSecondAndFourthAnodeVoltage

    12000 V

  • TypicalFirstAnodeVoltage

    300 V

  • TypicalThirdAnodeVoltageForFocus

    -200 V

  • GridBiasForCutoff

    -72 to -30 V

Capacitance

  • GridToAllCapacitance

    7 pF

  • Cathode To All Capacitance

    3 pF

  • FinalAnodesToExternalCoatingCapacitance

    400 pF