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Specialized - Cathode Ray ·CathodeRay

24BAP4

Twenty-four-inch directly viewed rectangular television picture tube with 110-degree magnetic deflection, low-voltage electrostatic focusing, aluminized screen, and low-grid-No.2 cathode-drive design for a shallow receiver cabinet.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B8H
Base pins
-
Nominal heater
-

Description

from JEDEC release #2442, April 13, 1959 24BAP4 PICTURE TUBE Low-Voltage Electro- Aluminized Screen 21-7/18" x 16-7/8" Screen static Focus Low-Grid-No.2-Voltage Type 24-1 /8" Max. Bulb Diagonal 110° Magnetic Deflection for Cathode-Drive Operation 16-3/16" Max. Length TENTATIVE DATA RCA-24BAP4 is a directly viewed, rectangular through the wide deflection angle with only glass picture tube having a 24-inch diagonal slightly more power than is required to scan a envelope. Employing a |109-diagonal deflection tube with 90° deflection angle. angle and low-voltage electrostatic focus, The 24BAP4 has a spherical Filterglass face— it is intended primarily for use in cathode- plate; an aluminized screen 21-7/16" x 16-7/8" drive applications. with slightiy curved sides and rounded corners; a minimum projected screen area of 332 square inches; a maximum overall length of 16-3/16"; an external condu

Socket description

Neoeightar 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B8H
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
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.

Source-derived section; promoted values populated where applicable.

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Low-Voltage Electro- Aluminized Screen

    8

    Low-Voltage Electro- Aluminized Screen 21-7/18" x 16-7/8" Screen

  • static Focus Low-Grid-No

    8

    static Focus Low-Grid-No.2-Voltage Type 24-1 /8" Max. Bulb Diagonal

  • 110° Magnetic Deflection for Cathode-Drive Operation 16-3/16

    16

    110° Magnetic Deflection for Cathode-Drive Operation 16-3/16" Max. Length

  • envelope. Employing a |

    90

    envelope. Employing a |109-diagonal deflection tube with 90° deflection angle.

  • angle and low-voltage electrostatic focus, The

    24

    angle and low-voltage electrostatic focus, The 24BAP4 has a spherical Filterglass face—

  • voltage {AC or OC)

    6.3 V

    voltage {AC or OC). . . . . . . . . 6.3 volts

  • Current

    600 mA

    Current . . . 0.6 amp

  • vertical., . . . . . . . .+ .« o e

    87

    vertical., . . . . . . . .+ .« o e . .. 87°

  • gperating Position. . . . « . v . . . v v

    0

    gperating Position. . . . « . v . . . v v 0. e 0 Any equivalent absclute minimum ultor-to-grid=-No.! voltage

  • is 11000 volts below which the serviceability of the

    11000 V

    is 11000 volts below which the serviceability of the

  • da.1 veltage is aever less than 11000 volts.

    11000 V

    da.1 veltage is aever less than 11000 volts.

  • Maximum Ratings, Design-Center Volues: The grid-No

    1

    Maximum Ratings, Design-Center Volues: The grid-No.4-to-grid-Ho0.1 voltage required for optimum

  • <?oooo max. volts between

    400 V

    . <?oooo max. volts between 0 and 400 volts; is independent of ultor current;

  • ULTOR =TO

    12000 V

    ULTOR =TO0-GRID-NO.1 YOLTAGE. . . . 12000@ min. volts and will remain essentially constant for values of

  • GRID-NO

    1

    GRID-NO.4=TO-GR!ID-NO.1 VOLTAGE: ultor-to—-grid-no.1 voltage, or grid-HNn.2-to—grig-nNo.1

  • Positive value . . . . « .« .«

    1000 V

    Positive value . . . . « .« .« . . . 1000 max. volts voltage, within design ranges shown for these items.

  • Negative value . . . . . «

    500 V

    Negative value . . . . . « . . . . 500 max. volts Distance fram.Reference Line for svitaple PM centering

  • GRID=-NO

    61 V

    GRID=-NO.2-TO-GRID~NO.1 VOLTAGE . . . 61 max. volts fields, the center of the undeflected focused sgot will

  • CATHODE=TO~GRID—NO.{ VOLTAGE: fall within a circle havinga

    8

    CATHODE=TO~GRID—NO.{ VOLTAGE: fall within a circle havinga 3/8~inch radius concentric

  • fositive peak value

    200 V

    fositive peak value. . . . . . . . 200 max. volts with the center of the tube face. It is tobenoted that

  • Positive bias value

    2 V

    Positive bias value. . . . . . . . 140 max. volts the earth’s magnetic field can cause asmuch as §/2-inch

  • Negative bias value

    0 V

    Negative bias value. . . . . . . . 0 max. volts

  • Negative peak valve

    2 V

    Negative peak valve. . . . . . . . 2 max. volts

  • Ef=

    6.3 V

    Ef=6.3 VOLTS

  • PEAK HEATER-CATHODE VOLTAGE: ULTOR-TO-GRID=N

    16000 V

    PEAK HEATER-CATHODE VOLTAGE: ULTOR-TO-GRID=N2I VOLTS=16000Q

  • Heater negative with GRID-N

    4 V

    Heater negative with GRID-N24-TO-GRID-N2) VOLTS ADJUSTED FOR FOCUS.

  • respect to cathede

    18 V

    respect to cathede . . . . . . . 18¢ max. volts ¥|NCREASES OR DECREASES DIRECTLY BY APPROX.

  • 2%, FOR EVERY [1000~-VOLT CHANGE [N ULTOR-TO-

    1000 V

    2%, FOR EVERY [1000~-VOLT CHANGE [N ULTOR-TO-

  • respect to cathode .,

    180 V

    respect to cathode ., . . . . . 180 max. volts eeaeeeey

  • ¥ith any ultor—te-grid-¥o.! voltage (Ecjgl) between

    12000

    ¥ith any ultor—te-grid-¥o.! voltage (Ecjgl) between 12000 e

  • and

    50 V

    and 20000 volts and grid-¥o.2-to-grid-Fo.l voltage rEcngJ > 50

  • between

    1 V

    between 50 and 64 volts 1 F FERFCELE

  • voitage for Focusy . . . . . . ¢ to

    400 V

    voitage for Focusy . . . . . . ¢ to 400 volts

  • Cathode-to-Grid-~No

    1

    Cathode-to-Grid-~No.1 Voltage

  • GRID-N

    2 V

    GRID-N22~TO~GRID-N2I VOLTS

  • No.l voltage of

    20000

    No.l voltage of 18000 20000 valts lished in accordance with the following definition of the

  • K¥e.l voltage of

    6 V

    K¥e.l voltage of 50 6y volts pesign-Center ratingsarelimitin? values of operating

  • voltage for Focus

    400 V

    voltage for Focus. . . . 0 to 440 ¢ to 400 volts device of a specified type as defined by its pudlished

  • of Focused Raster

    58 V

    of Focused Raster. . . 32 to 47 42 to 58 volts applications, takiag responsibility for normal changes in

  • Cathode-to-Grid-yo

    1

    Cathode-to-Grid-yo.1 operating conditions due to rated supply voltage variation*,

  • Grid-No

    1.5

    Grid-No.1-Circuit Resistance . . . . . 1.5 max. megohms r-Ray Farnini. when operated at ultor vottages up ta

  • ® 16 kilovolts, the 2uBaPu does not produce any harmful

    2

    ® 16 kilovolts, the 2uBaPu does not produce any harmful

  • which is applied tne highest dc voltage for acceler-— permits operation at voltages as higbh as

    22

    which is applied tne highest dc voltage for acceler-— permits operation at voltages as higbh as 22 kilovolts

  • 16 xilovolts. resuliing from tuce implosion under some abnor

    16

    16 xilovolts. resuliing from tuce implosion under some abnormal condi-

  • Ef=

    6.3 V

    Ef=6.3 YOLTS E£= 6.3 VOLTS

  • ULTOR-TO-GRID-N%I VOLTS=

    50 V

    ULTOR-TO-GRID-N%I VOLTS=16000 ULTOR-TO-GRID-N2| VOLTS= 50

  • GRID-N$

    50 V

    GRID-N$ 2-TO-GRID-N21 VOLTS=50 CATHODE BIASED POSITIVE WITH RESPECT TO

  • AASTER SIZE =

    21

    AASTER SIZE = 21° x b

  • / 7°R COATING

    7

    / 7°R COATING

  • AX1S) OF £ 30°.

    30

    AX1S) OF £ 30°.