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Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

24VP4A

Twenty-four-inch direct-view monochrome television picture tube with a P4 screen and magnetic deflection. Manufacturer documentation provides the high-voltage operating, focusing, optical, and capacitance characteristics required for receiver display service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
12N
Socket code
B12D
Base pins
5
Nominal heater
6.3 V / 600 mA

Description

Direct-view cathode-ray picture tube intended for television display service. The supplied Tung-Sol datasheet provides electrical ratings, operating conditions, capacitances, optical characteristics, focusing and deflection information. Features an aluminized screen where specified by this designation.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
12N
Socket code
B12D
Base pins
5
Nominal heater voltage
6.3 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12N - 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
0 V
Max screen voltage
2 V

CRT electrode, focus, deflection and optical data preserved in parameter rows.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Maximum Anode Voltage

    22000 V

  • Typical Anode Voltage

    20000 V

  • Maximum Grid2 Voltage

    600 V

  • Typical Grid2 Voltage

    300 V

Characteristic

  • FocusingMethod

    Magnetic

  • DeflectingMethod

    Magnetic

  • DiagonalDeflectionAngleApproximate

    90 degree

  • PhosphorNumber

    4

  • FluorescentColor

    White

Data set 02

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • MAGNETIC FOCUS AND DEFLECTION

    10

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • D I.R ECT INTERELECTRODE CAPACITANCES (APPROX.) — value 1

    1

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • D I.R ECT INTERELECTRODE CAPACITANCES (APPROX.) — value 2

    1

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • MINIMUM EXTERNAL CONDUCTIVE COATING TO ANODE

    750

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • PHOSPHOR NUMBER

    4

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • FACEPLATE LIGHT TRANSMISSION AT CENTER (APPROX.) — value 1

    11 percent

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • FACEPLATE LIGHT TRANSMISSION AT CENTER (APPROX.) — value 2

    6 percent

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • HEATER VOLTAGE

    6.3 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • HEATER CURRENT

    0 mA

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • HEATER POSITIVE WITH RESPECT TO CATHODE — value 1

    1 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • HEATER POSITIVE WITH RESPECT TO CATHODE — value 2

    0 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC ANODE

    20000 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC GRID — value 1

    2 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC GRID — value 2

    300 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC GRID #i VOLTA GE B — value 1

    1 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC GRID #i VOLTA GE B — value 2

    -33 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC GRID #i VOLTA GE B — value 3

    -77 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC FOCUSING COIL CURRENTC — value 1

    1 mA

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • DC FOCUSING COIL CURRENTC — value 2

    25 mA

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • XIGN VOLTAGE CIRCUIT WILL BE OVER THE NA%IMUN PE0.NITTED BY THE UNDERWRITERS LABORATORY. THIS — value 1

    0 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • XIGN VOLTAGE CIRCUIT WILL BE OVER THE NA%IMUN PE0.NITTED BY THE UNDERWRITERS LABORATORY. THIS — value 2

    1 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • XIGN VOLTAGE CIRCUIT WILL BE OVER THE NA%IMUN PE0.NITTED BY THE UNDERWRITERS LABORATORY. THIS — value 3

    1 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • CONOITIOX WILL REQUIRE THAT PROVISION BE MADE FOR GR OUMOING THE MI GX VOLTAGE SUPPLY WMEX THE

    0 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • BFOR VISUAL E%TINLTION OF UN DEFLECTED FOCUSED SPOT.

    0

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • CFOR STANDARD FOCUS COIL f109, OR EQUIVALENT, WITH THE COMBINED GR IO fl BIAS VOLTAGE AMD VIDEO — value 1

    9 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • CFOR STANDARD FOCUS COIL f109, OR EQUIVALENT, WITH THE COMBINED GR IO fl BIAS VOLTAGE AMD VIDEO — value 2

    0 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • CFOR STANDARD FOCUS COIL f109, OR EQUIVALENT, WITH THE COMBINED GR IO fl BIAS VOLTAGE AMD VIDEO — value 3

    10 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • SIGNAL VOLTAGE AOJU STED TO PR OOUCE A MIGNLIGNT BRIGHTNESS OF 20 FOOT CAMBER TS ON A 21 j/8" BY — value 1

    0 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • SIGNAL VOLTAGE AOJU STED TO PR OOUCE A MIGNLIGNT BRIGHTNESS OF 20 FOOT CAMBER TS ON A 21 j/8" BY — value 2

    21 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • SIGNAL VOLTAGE AOJU STED TO PR OOUCE A MIGNLIGNT BRIGHTNESS OF 20 FOOT CAMBER TS ON A 21 j/8" BY — value 3

    8 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • 16 1/16" PICTURE SIZE. DISTANCE FROM REFERENCE LINE TO CENTER OF AIR GAP ON FOCUS COIL SNAIL — value 1

    11

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • 16 1/16" PICTURE SIZE. DISTANCE FROM REFERENCE LINE TO CENTER OF AIR GAP ON FOCUS COIL SNAIL — value 2

    0

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • 16 1/16" PICTURE SIZE. DISTANCE FROM REFERENCE LINE TO CENTER OF AIR GAP ON FOCUS COIL SNAIL — value 3

    0

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

Other

  • MAXIMUM EXTERNAL CONDUCTIVE COATING TO ANODE

    500

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • MAXIMUM DC

    0 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • MAXIMUM DC GRID #2 VOLTAGE

    2 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • MAXIMUM GRID #1 VOLTAGE

    1 V

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • MAXIMUM GRID — value 1

    1 Mohm

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.

  • MAXIMUM GRID — value 2

    1.5 Mohm

    Published CRT datasheet value; multiple values on one source row represent separate conditions, limits, or nominal values.