Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

A4714W

47 cm monochrome television picture tube with electrostatic focusing, magnetic deflection, approximately 110-degree scanning, and high-voltage direct-view operation around 18–20 kV.

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

Description

47 cm 110-degree monochrome television picture tube with tinted aluminized screen.

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
Max plate voltage
20000 V

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

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 Mullard

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    300 mA

  • Focusing Method

    Electrostatic text

  • Deflection Method

    Magnetic text

  • Deflection Angle

    110 deg

  • Light Transmission

    50 percent

    Approximate

  • Grid Cutoff Voltage Range

    -40 to -77 V

    AtFirstAnode=400V

  • Grid Cutoff Voltage Range

    -50 to -93 V

    AtFirstAnode=500V

Other

  • Final Anode Voltage

    20000 V

  • Focus Electrode Voltage Minimum

    0 V

  • Focus Electrode Voltage Maximum

    400 V

  • First Anode Voltage

    400 V

    OperatingOption1

  • First Anode Voltage

    500 V

    OperatingOption2

  • Maximum Heater Surge Voltage

    9.5 V

    SeriesHeaterOperation

Data set 02

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater or filament voltage

    6.3 V

    Published nominal value

  • Heater or filament current

    300 mA

    Published nominal value

  • Screen diagonal

    47 cm

    Published

  • Deflection angle

    110 deg

    Published