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Specialized - Cathode Ray ·CathodeRay

5BWP1

High-voltage flat-face post-accelerator instrument CRT with electrostatic focusing and electrostatic deflection and asymmetric scan geometry. Du Mont designed it for specialized oscillographic display requiring enhanced final acceleration.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B14A
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

High-voltage flat-face post-accelerator electrostatic-focus and electrostatic-deflection cathode-ray tube with asymmetric scan geometry.

Socket description

Large readout/Nixie 14-contact base, 44.5 mm pin circle

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B14A
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
600 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 electron-gun/display section; CRT-specific ratings and operating data are stored as parameters.

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

1960 Du Mont

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    1 code

    Electrostatic

  • Deflection method

    1 code

    Electrostatic

  • Deflection factor D1-D2

    -

    Published range 160 to 189 V/in

  • Deflection factor D3-D4

    -

    Published range 34 to 49 V/in

  • Minimum useful screen

    4 in

Other

  • Accelerator voltage maximum

    4000 V

  • Accelerator voltage

    4000 V

  • Post-accelerator voltage maximum

    24000 V

  • Post-accelerator voltage

    24000 V

  • Grid No. 1 voltage

    -

    Published range -200 to -128 V

  • Grid No. 1 negative bias maximum

    200 V

  • Isolation shield voltage minimum

    3760 V

  • Isolation shield voltage maximum

    4240 V

  • Post-accelerator current maximum

    100 uA

Capacitance

  • Cathode to all other electrodes

    4.6 pF

    Approximate or first published bound

  • Grid No. 1 to all other electrodes

    6.4 pF

    Approximate or first published bound