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Specialized - Cathode Ray ·CathodeRay

AF3110

Twelve-inch radar CRT with low-voltage electrostatic focusing and magnetic deflection, designed for direct-view radar presentation on a larger screen.

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

Description

12-inch radar CRT with magnetic deflection and low-voltage electrostatic focus.

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
15000 V

Published Mullard ratings, characteristics, capacitances, and operating data promoted where applicable; additional electrical values retained 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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Magnetic

  • Phosphor fluorescence

    Orange with orange afterglow

  • Persistence

    Very long / long depending screen

Construction

  • Screen construction

    Metal-backed

Application

  • Application

    Direct-view television / radar display

Capacitance

  • Grid-to-all capacitance maximum

    8 pF

  • Cathode-to-all capacitance maximum

    8 pF

  • Final-anode-to-coating capacitance

    1200 pF

Other

  • Focus-electrode voltage minimum

    -200 V

  • Focus-electrode voltage maximum

    200 V

  • Extended focus-search voltage minimum

    -300 V

  • Extended focus-search voltage maximum

    300 V

  • Heater surge voltage maximum

    9.5 V rms

    SeriesHeater