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Specialized - Cathode Ray ·CathodeRay

DG31

Philips/Mullard DG-series cathode-ray instrument tube intended for oscillographic and measurement display, with manufacturer-defined electrostatic focusing, deflection, screen, and accelerating characteristics for type DG31.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 630 mA

Description

The Mullard DG31 is a one-inch green-screen cathode-ray tube for oscillographic use with double electrostatic deflection.

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
630 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 1

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Oscillographic CRT electron-gun/display 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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    630 mA

  • Fluorescence

    Green text

  • Deflection Method

    Double Electrostatic text

  • Grid Voltage

    -35 V

    Approximate

  • Horizontal Deflection Sensitivity

    0.1 mm/V

  • Vertical Deflection Sensitivity

    0.08 mm/V

  • Grid Capacitance

    7.5 pF

  • Deflection Plate Pair 1 Capacitance

    1.75 pF

  • Deflection Plate Pair 2 Capacitance

    2 pF

Other

  • Anode 2 Voltage

    250 V

  • Focus Voltage

    130 V

    Approximate

  • Maximum Anode 2 Voltage

    500 V

  • Maximum Anode 1 Voltage

    150 V