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Specialized - Cathode Ray ·CathodeRay

DW391

Philips high-vacuum television picture tube with white fluorescent screen and double electrostatic deflection, designed for early direct-view monochrome television receiver service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
4 V / 1.2 A

Description

DW391 is a CathodeRay device in the supplied Philips literature. Philips high-vacuum cathode-ray tube for television receiver service with white fluorescent screen and double electrostatic deflection.

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
4 V
Nominal heater current
1.2 A
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.

Philips high-vacuum cathode-ray tube for television receiver service with white fluorescent screen and double electrostatic deflection.

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

1938 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Screen diameter

    395 mm

  • Greatest overall length

    765 mm

  • Greatest length without pins

    735 mm

  • Maximum third-anode voltage

    6000 V

  • Maximum second-anode voltage

    1200 V

  • Maximum first-anode voltage

    250 V

  • Maximum grid bias for ray suppression

    -60 V

  • Third-anode voltage

    5000 V

  • Second-anode voltage

    1000 V

  • First-anode voltage

    250 V

Characteristic

  • Deflection sensitivity N1

    0.18 mm/V

  • Deflection sensitivity N2

    0.14 mm/V

Capacitance

  • Grid capacitance

    15 pF

  • Deflection-plate capacitance D1-D1'

    4 pF

  • Deflection-plate capacitance D2-D2'

    5 pF