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

Specialized - Cathode Ray ·CathodeRay

A6511W

Large direct-view monochrome television picture tube with magnetic deflection and electrostatic focusing. Its rectangular aluminized screen and wide-angle scanning are designed for conventional television receiver display service.

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

Description

65 cm reinforced direct-view television CRT with 110-degree 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
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 Telefunken ratings and characteristics promoted from the supplied source.

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

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • HeaterOrFilamentVoltage

    6.3 V

  • HeaterOrFilamentCurrent

    300 mA

  • UsefulScreenDiagonalMinimum

    616.5 mm

  • UsefulScreenWidthMinimum

    530 mm

  • UsefulScreenHeightMinimum

    416 mm

  • DeflectionMethod

    Magnetic

  • Deflection Angle

    110 degree

  • FocusingMethod

    Electrostatic

  • ScreenConstruction

    Metal-backed grey glass

Data set 02

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Magnetic

  • Deflection angle

    110 deg

Construction

  • Screen construction

    Metal-backed

Application

  • Application

    Direct-view television / radar display

Other

  • Final-anode voltage maximum at zero current

    20 kV

  • Final-anode voltage minimum

    13 kV

  • Focus-electrode positive voltage maximum

    1000 V

  • Focus-electrode negative voltage maximum

    -500 V

  • First-anode supply source impedance maximum

    1.5 Mohm