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Specialized - Cathode Ray ·CathodeRay

AF2180

Rectangular metal-backed radar cathode-ray tube with electrostatic focusing, 90-degree magnetic deflection, and ion trap. Its direct-view construction is designed for radar presentation.

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

Description

AF2180 is a CathodeRay device. Rectangular metal-backed radar cathode-ray tube with electrostatic focusing, 90-degree magnetic deflection, and ion trap.

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

No fixed ratings are recorded for this section.

Rectangular metal-backed radar cathode-ray tube with electrostatic focusing, 90-degree magnetic deflection, and ion trap.

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

Other

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Screen color

    Orange with orange afterglow

  • Useful diagonal

    195 to - mm

    Minimum

  • Useful width

    180 to - mm

    Minimum

  • Useful height

    135 to - mm

    Minimum

  • Grids 4 and 6 voltage

    9 kV

  • Grids 3 and 5 voltage

    -30 to 200 V

  • Grid 2 voltage

    400 V

  • Grid 1 cutoff voltage magnitude

    40 to 80 V

Capacitance

  • Grid-1 capacitance

    - to 8 pF

    Maximum

  • Cathode capacitance

    - to 6 pF

    Maximum

  • Grid-4+6 to outer-coating capacitance

    250 to 350 pF

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

    195 mm

  • Deflection method

    Magnetic

  • Focusing method

    Electrostatic

  • Deflection angle

    90 deg

  • Ion trap

    Present

Capacitance

  • Grid No.1 capacitance maximum

    8 pF

  • Cathode capacitance maximum

    8 pF

Other

  • Grid No.2 voltage

    400 V

  • Maximum grid No.2 voltage

    500 V