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Specialized - Cathode Ray ·CathodeRay

DG73201

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 DG73201.

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

Description

Low-voltage green-screen cathode-ray tube for oscilloscopes with medium persistence.

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 1

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

CRT-specific optical, focusing, deflection, accelerating-voltage, scan, and capacitance data are retained in TUBE_SECTION_PARAMETER because the locked promoted fields primarily target conventional electrode sections.

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 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Construction

  • Focusing

    Electrostatic

    OscilloscopeCRT

  • Deflection

    Double electrostatic

    OscilloscopeCRT

  • Screen fluorescence

    Green

    OscilloscopeCRT

  • Screen persistence

    Medium

    OscilloscopeCRT

Other

  • Heater voltage

    6.3 V

    OscilloscopeCRT

  • Heater current

    300 mA

    OscilloscopeCRT

  • Accelerator voltage

    500 V

    OscilloscopeCRT

  • Focusing voltage range

    0 to 120 V

    OscilloscopeCRT

  • Grid No.1 extinction voltage range

    50 to 100 V

    OscilloscopeCRT

Characteristic

  • Deflection sensitivity D1 minimum

    0.43 mm/V

    OscilloscopeCRT

  • Deflection sensitivity D1 maximum

    0.53 mm/V

    OscilloscopeCRT

  • Deflection sensitivity D2 minimum

    0.24 mm/V

    OscilloscopeCRT

  • Deflection sensitivity D2 maximum

    0.3 mm/V

    OscilloscopeCRT

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Screen fluorescence

    Green

    Published datasheet value

  • Persistence

    Medium

    Published datasheet value

  • Deflection sensitivity first pair

    0.43-0.53 mm/V

    Published datasheet value

  • Deflection sensitivity second pair

    0.24-0.30 mm/V

    Published datasheet value

  • Grid No.1 capacitance

    7.6 pF

    Published datasheet value

  • Cathode capacitance

    3.2 pF

    Published datasheet value

Other

  • Grid No.2 and No.4 voltage

    500 V

    Published datasheet value

  • Grid No.3 voltage

    0 to 120 V

    Published datasheet value

  • Negative grid No.1 cut-off voltage

    50 to 100 V

    Published datasheet value

  • Maximum grid No.2 and No.4 voltage

    - to 800 V

    Published datasheet value

  • Minimum grid No.2 and No.4 voltage

    400 to - V

    Published datasheet value

  • Maximum grid No.3 voltage

    - to 200 V

    Published datasheet value

  • Maximum negative grid No.1 voltage

    - to 160 V

    Published datasheet value

  • Maximum cathode-heater voltage

    - to 125 V

    Published datasheet value

  • Grid No.2 and No.4 dissipation maximum

    - to 0.5 W

    Published datasheet value

  • Deflection plate circuit resistance maximum

    - to 5 MΩ

    Published datasheet value

  • Grid No.1 circuit resistance maximum

    - to 0.5 MΩ

    Published datasheet value