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Specialized - Cathode Ray ·CathodeRay

DG76

Philips/Mullard DG-series cathode-ray instrument tube for oscillographic and measurement display, with manufacturer-defined electrostatic beam focusing, deflection, screen, and accelerating characteristics for type DG76.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B8G
Base pins
-
Nominal heater
6.3 V / 300 mA

Description

The Mullard DG76 is a high-vacuum electrostatic oscilloscope tube with an approximately 2.5-inch screen and green medium persistence phosphor.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B8G
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 1

Cathode Ray

X-ray radiationInterelectrode capacitances
Max plate voltage
400 V

Electrostatic focusing/deflection CRT section; electrical/screen/deflection data retained in parameter rows.

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

1951 Mullard Valve and Service Manual

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Screen Colour / Persistence

    Green, medium persistence

  • Focusing Method

    Electrostatic

  • Deflecting Method

    Double Electrostatic

Other

  • Anode Voltage

    800 V

  • Focusing Electrode Voltage Minimum

    200 V

  • Focusing Electrode Voltage Maximum

    300 V

Data set 02

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Maximum Plate Voltage

    400 V

  • Grid 2 Operating Voltage Minimum

    200 V

  • Grid 2 Operating Voltage Maximum

    300 V

  • Maximum Grid 2 Voltage

    400 V

Characteristic

  • Focusing Method

    Electrostatic

  • Deflection Method

    Double electrostatic

  • Screen Variant

    green, medium persistence