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Specialized - Cathode Ray ·CathodeRay

AW3648

Rectangular television studio-monitor picture tube with gray filter glass and a metal-backed white screen. Philips documentation identifies professional monitor service rather than ordinary domestic receiver use.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DUODECAL7
Base pins
-
Nominal heater
6.3 V / 300 mA

Description

Rectangular television studio-monitor picture tube with grey filter glass and metal-backed white screen.

Socket description

Duodecal 7-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
DUODECAL7
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 electrical, optical, deflection, focusing, capacitance, and mechanical 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

  • Screen color

    White

    MonitorCRT

  • Focusing

    Electrostatic

    MonitorCRT

  • Deflection

    Double magnetic

    MonitorCRT

Other

  • Screen useful dimension

    318 mm

    MonitorCRT

  • Final accelerator voltage

    14 kV

    MonitorCRT

  • Grid No.2 voltage

    300 V

    MonitorCRT

  • Heater voltage

    6.3 V

    MonitorCRT

  • Heater current

    300 mA

    MonitorCRT

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

Construction

  • Useful screen diagonal/diameter

    318 mm

  • Deflection method

    Magnetic

  • Screen construction

    Metal-backed

Capacitance

  • Grid No.1 capacitance maximum

    8 pF

  • Cathode capacitance maximum

    8 pF

  • External coating capacitance

    1100 pF

Other

  • Heater switch-on voltage maximum

    9.5 V

    SeriesHeaterChain