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Specialized - Cathode Ray ·CathodeRay

DN1379

Philips DN-series cathode-ray instrument tube for oscillographic and measurement display, with manufacturer-defined electron-optical focusing, deflection, screen, and accelerating characteristics for type DN1379.

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

Description

Flat-face post-deflection-acceleration high-sensitivity cathode-ray oscilloscope tube. The source provides CRT heater, focusing/deflection, capacitance, scan/sensitivity and operating data where published.

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.

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

1963 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Useful screen diameter min

    108 mm

    Useful screen diameter min. 108 mm

  • Heater voltage Vf

    6.3 V

    Heater voltage Vf = 6.3 V

  • Heater current If

    300 mA

    Heater current If = 0.3 A

  • Cathode to all other electrodes Ck

    3.9 pF

    Cathode to all other electrodes Ck = 3.9 pF

  • The post-accelerator helix is connected between g

    7 A

    The post-accelerator helix is connected between g7 and g6.

  • LINE WIDTH measured on a circle of

    30 mm

    LINE WIDTH measured on a circle of 30 mm diameter

  • Post accelerator voltage VB

    10 kV

    Post accelerator voltage VB7 10 kV

  • Grid No

    4 V

    Grid No.4 voltage Vg4 1670 V

  • Grid No

    1670 V

    Grid No.4 voltage Vg4 1670 V

  • Grid No

    2 V

    Grid No.2 voltage VB2 = 1670 V

  • Grid No

    1670 V

    Grid No.2 voltage VB2 = 1670 V

  • Beam current IQ

    0.5 uA

    Beam current IQ = 0.5 µA

  • Line width l.w

    0.4 mm

    Line width l.w. = 0.4 mm

  • Post accelerator voltage

    10 kV

    Post accelerator voltage = 10 kV

  • Second accelerator voltage

    1670 V

    Second accelerator voltage = 1670 V 1 )

  • Focusing electrode voltage Vg

    180 to 590 V

    Focusing electrode voltage Vg3 = 180 to 590 V

  • First accelerator voltage Vg

    1670 V

    First accelerator voltage Vg2 = 1670v

  • Grid No

    -50 to -80 V

    Grid No.1 voltage Vg1 = -50 to -80 V 2)

  • Grid No

    1 V

    Grid No.1 voltage Vg1 = -50 to -80 V 2)

  • Grid No

    1 V

    Grid No.1 voltage

  • Focusing voltage V

    110 to 355 V

    Focusing voltage V63 = 110 to 355 V per kV of Vg4

  • Grid No

    30 to 48 V

    Grid No.1 voltage 2) -V81 = 30 to 48 V per kV of Vg2

  • Grid No

    1 V

    Grid No.1 voltage 2) -V81 = 30 to 48 V per kV of Vg2

  • Useful screen diameter

    108 mm

    Useful screen diameter

  • Post-deflection acceleration present

    1

    Source explicitly describes post-deflection acceleration

Other

  • The useful scan may vertically be shifted max

    3 mm

    The useful scan may vertically be shifted max. 3 mm with

  • Second accelerator voltage Vg

    2100 V

    Second accelerator voltage Vg4 = max. 2100 V

  • Focusing electrode voltage V

    1500 V

    Focusing electrode voltage V83 = max. 1500 V

  • cathode positive Vkf(k pos) = max

    200 V

    cathode positive Vkf(k pos) = max. 200 V

  • cathode negative Vkf(k neg) = max

    125 V

    cathode negative Vkf(k neg) = max. 125 V