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Specialized - Cathode Ray ·CathodeRay

DB1311

Philips flat-face post-deflection-acceleration cathode-ray oscilloscope tube for oscillography, using electrostatic beam control. Manufacturer documentation provides screen, focusing and deflection, capacitance, sensitivity, rating, and operating data where published.

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

Description

Flat-face post-deflection-acceleration cathode-ray oscilloscope tube for oscillography. Philips sheet provides electrostatic focusing/deflection, screen, capacitance and operating data.

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

Other

  • Useful screen diameter min

    114 mm

    Useful screen diameter min. 114 mm

  • The useful scan may vertically be shifted max

    3 mm

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

  • Cathode to all other electrodes CM = max

    3.5 pF

    Cathode to all other electrodes CM = max. 3.5 pF

  • Isolation shield voltage Vç max

    4400 V

    Isolation shield voltage Vç max. 4400 V

  • voltage Vg

    4200 V

    voltage Vg5 = max. 4200 V

  • Focusing electrode voltage Vg

    2000 V

    Focusing electrode voltage Vg3 = max. 2000 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

  • Cathode current Ik = max

    1.5 mA

    Cathode current Ik = max. 1.5 mA(RMS)

Characteristic

  • Heater voltage Vg

    6.3 V

    Heater voltage Vg = 6.3 V

  • Heater current If

    300 mA

    Heater current If = 0.3 A

  • Post accelerator voltage

    24 kV

    Post accelerator voltage = 24 kV

  • Grids No

    4 kV

    Grids No. 2 and 4 voltage VB2iB4 = 4 kV

  • Beam current IJ

    10 µA

    Beam current IJ = 10 µA

  • Line width l.w

    0.2 mm

    Line width l.w. = 0.2 mm

  • Post accelerator voltage Vg

    24 kV

    Post accelerator voltage Vg. = 24 kV

  • Isolation shield voltage

    4000 V

    Isolation shield voltage = 4000 V t)

  • Deflection plate shield voltage

    200 V

    Deflection plate shield voltage = 4000 ± 200 V 1 )

  • Accelerator voltage VB

    200 V

    Accelerator voltage VB2,g4 = 4000 ± 200 V 1 )

  • Focusing electrode voltage

    1400 V

    Focusing electrode voltage = 800 to 1400 V

  • Grid No

    -192 V

    Grid No.1 voltage V51 = -120 to -192 V 2)

  • Accelerator voltage yg

    4200 V

    Accelerator voltage yg2,g4 = 4200 V