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Specialized - Cathode Ray ·CathodeRay

22VARP4

Large P4 monochrome television picture tube for high-voltage direct-view service, using magnetic deflection and manufacturer-specified focusing and beam-control arrangements for type 22VARP4.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 450 mA

Description

22-inch television picture tube closely related to 23GWP4 with revised X-radiation characteristics.

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
450 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
22000 V

Published CRT maximum ratings, operating conditions, capacitances, and deflection/focus data retained; X-ray precautions apply at elevated EHT.

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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Magnetic

  • Horizontal deflection angle

    99 deg

  • Vertical deflection angle

    82 deg

  • Diagonal deflection angle

    110 deg

  • Heater voltage

    6.3 V

  • Heater current

    450 mA

Capacitance

  • Cathode-to-all capacitance

    5 pF

  • Grid1-to-all capacitance

    6 pF

  • External coating capacitance minimum

    1700 pF

  • External coating capacitance maximum

    2500 pF

Other

  • Anode voltage maximum

    22000 V

  • Anode voltage minimum

    11000 V

  • Typical anode voltage

    18000 V

  • Typical focus-electrode voltage

    150 V

  • Typical grid2 voltage

    50 V

Application

  • Application

    Monochrome television picture display

CrossReference

  • Relationship to 23GWP4

    Similar; registration specifically revises X-radiation statement