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Specialized - Cathode Ray ·CathodeRay

24AHP4

Large P4 monochrome television picture tube in the 24-inch class, designed for high-voltage direct-view service with manufacturer-specified focusing, magnetic deflection, and beam-control characteristics for type 24AHP4.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DUODECAL5
Base pins
7
Nominal heater
6.3 V / 600 mA

Description

24-inch 110-degree monochrome television CRT with low-voltage electrostatic focus and magnetic deflection.

Socket description

Small-shell Duodecal 5-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
DUODECAL5
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
600 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
20000 V
Max screen voltage
500 V

CRT-specific ratings, operating conditions, capacitances, focus/deflection, cutoff, optical, and screen data are retained in section 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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Low-Voltage Electrostatic Aluminized Screen

    8

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

  • 110° Magnetic Deflection Requires No lon-Trap Magnet 16-3/16

    16

    110° Magnetic Deflection Requires No lon-Trap Magnet 16-3/16™ Max. Length

  • slightly curved sides and rounded corners and a power than is required to scan a tube with

    90

    slightly curved sides and rounded corners and a power than is required to scan a tube with 90°

  • voltage (AC or DC)

    6.3 V

    voltage (AC or DC) 6.3 volts

  • current. « « . . o

    10 A

    current. « « . . o . 0 e 0 . e e 0.6 t 10% amp

  • Grid No

    6 pF

    Grid No.1to all other electrodes. . . 6 uuf

  • Diagonal

    110

    Diagonal 110°

  • Designed with a IIOO—diagonal deflection Horizontal

    105

    Designed with a IIOO—diagonal deflection Horizontal 105°

  • angle, the

    87

    angle, the 24AHP4 has very short length--a length vertical 87°

  • the same size faceplate and

    16

    the same size faceplate and 90° deflection. As Overall length . 15-7/8" + 5/16"

  • Screen Dimensions {Minimum): GRID~NO

    1

    Screen Dimensions {Minimum): GRID~NO.4~TO-GR.ID-No.1 VOLTAGE:

  • Greatest width

    1000 V

    Greatest width . . . . . . . . . . . .. 21-7/16" Positive value . . 1000 max. volts

  • Greatest height

    500 V

    Greatest height. . . . . . . . . . . .. 16-7/8" Negative value . . . C e e 500 max. volts

  • Diagonal

    640 V

    Diagonal . . . . . . . 4 v u e e e 22-13/16" GRID~NO.2-TO~-GRID-NoO.1 VOLTAGE e e e 640 max. volts

  • Projected area . e e e e e e e

    500 V

    Projected area . e e e e e e e 332 sq. in. GRID-NO.2-TO-CATHODE VOLTAGE . . . . . 500 max. volts

  • cap. . . . . . . . Recessed Small Cavity (JETEC No.J

    1

    cap. . . . . . . . Recessed Small Cavity (JETEC No.J1-21) CATHODE-TO-GRID-No.1 VOLTAGE:

  • Bulb + v v v v o . . . e e .. J

    200 V

    Bulb + v v v v o . . . e e .. J192 (1100) Positive peak value. « . . + « . . . 200 max. volts

  • Base . . . Small—Button Eightar

    140 V

    Base . . . Small—Button Eightar 7-Pin Positive bias value. . . . . . . . . 140 max. volts

  • Arrangement

    0 V

    Arrangement 2, (JETEC No.B7-183) Negative bias value. . . . « . . . . 0 max. volts

  • weight (APProx.) « v v v v v v v v v v e

    2 V

    weight (APProx.) « v v v v v v v v v v e 28 1bs Negative peak value. . . . . . . . . 2 max. volts

  • Mounting Position. + +« + + +« « v

    4

    Mounting Position. + +« + + +« « v 4 « v« <« . . . . Any PEAK HEATER-CATHODE VOLTAGE:

  • Unless otherwise specified, not exceeding

    410 V

    Unless otherwise specified, not exceeding 15 seconds. 410 max. volts

  • voltage values are positive with resbect to cathode After equipment warm—-up period

    180 V

    voltage values are positive with resbect to cathode After equipment warm—-up period . . 180 max. volts

  • to cathode . . C e e

    180 V

    to cathode . . C e e 180 max. volts

  • ULTOR®[ ] VOLTAGE + + o+ v v v o v

    2000

    ULTOR®[ ] VOLTAGE + + o+ v v v o v . . 2000

  • Positive value

    12000 V

    Positive value . . . 1000 max. volts With any wltor-to-grid-No.l voltage (Ecjgl) between 12000

  • Negative value

    2 V

    Negative value . . . . . . . . . . . 500 max. volts and 20000 volts and grid-No.2-to-grid-¥No.l voltage (EC2E1)

  • GRID-No

    640 V

    GRID-No.2 VOLTAGE. . . . . . . . . . . 500 max. volts between 225 and 640 volts

  • GRID-No

    1

    GRID-No.1 VOLTAGE: Grid-No.U-to-Grid-Ng.1

  • Negative peak value

    350 V

    Negative peak value. . . . . . . . . 200 max. volts voltage for Focus§ . . . ~50 to +350 volts

  • Negative bias value

    1 V

    Negative bias value. . . . . . . . . 140 max. volts cathode-to-Grid-No.1 Voltage

  • Positive bias value

    0 V

    Positive bias value. . . . . . . . . 0 max. volts (Exgy) for visual Extinction

  • Positive peak value. Ce e

    2 V

    Positive peak value. Ce e 2 max. volts of Focused Raster. . .See Raster-Cutoff-Range Chort

  • not exceeding

    410 V

    not exceeding 15 seconds. 410 max. volts

  • After equipment warm-up period

    180 V

    After equipment warm-up period . . 180 max. volts

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    600 mA

  • Focusing Method

    Low Voltage Electrostatic text

  • Deflection Method

    Magnetic text

  • Horizontal Deflection Angle

    105 deg

    Approximate

  • Vertical Deflection Angle

    87 deg

    Approximate

  • Diagonal Deflection Angle

    110 deg

    Approximate

  • Phosphor

    Aluminized P4 text

  • Fluorescence

    White text

  • Light Transmittance

    76 percent

    Approximate

  • Cathode-to-All Capacitance

    5 pF

    Approximate

  • Grid1-to-All Capacitance

    6 pF

    Approximate

  • External Coating-to-Anode Capacitance Minimum

    2000 pF

  • External Coating-to-Anode Capacitance Maximum

    2500 pF

Other

  • Maximum Anode Voltage

    22000 V

  • Minimum Anode Voltage

    12000 V

  • Maximum Focus Electrode Positive Voltage

    1100 V

    Grid4

  • Maximum Focus Electrode Negative Voltage

    -550 V

    Grid4

  • Maximum Grid2 Voltage

    500 V

  • Minimum Grid2 Voltage

    200 V

  • Maximum Heater-Cathode Voltage During Warmup

    450 V

    Duration<=15s

  • Maximum Heater-Cathode Voltage After Warmup

    200 V

  • Typical Anode Voltage

    16000 V

    CathodeDrive

  • Typical Focus Voltage Minimum

    0 V

    Grid4

  • Typical Focus Voltage Maximum

    400 V

    Grid4

  • Typical Grid2 Voltage

    400 V

    CathodeDrive

  • Cathode Voltage for Raster Cutoff Minimum

    36 V

    CathodeDrive

  • Cathode Voltage for Raster Cutoff Maximum

    78 V

    CathodeDrive

  • Maximum Grid1 Circuit Resistance

    1.5 Mohm

Data set 03

1971 RCA HB3 Binder 1 of 7

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Voltage

    63 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Current — published value 1

    0

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Current — published value 2

    6

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Current — published value 3

    10

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid No.1 to all other electrodes

    6

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Light transmission (Approx )

    76

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • GRID-No.4 VOLTAGE

    112000 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • With any ultor voltage (Ec k) between ta000 and 20000 volts

    20000 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No 4 Voltage for

    4 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focus — published value 1

    -50 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focus — published value 2

    350 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.4 Current — published value 1

    -25

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.4 Current — published value 2

    25

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.2 Current — published value 1

    -15

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.2 Current — published value 2

    15

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focus — published value 1

    -50 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focus — published value 2

    350 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focus — published value 3

    -50 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focus — published value 4

    350 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focused Raster — published value 1

    -28 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focused Raster — published value 2

    -72 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focused Raster — published value 3

    -36 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Focused Raster — published value 4

    -94 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • ULTOR-TO-GRID-No.l VOLTAGE

    20000 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • GRID-No.2-TO-GRID-No.l VOLTAGE

    640 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Voltage for Focus§ — published value 1

    -50 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Voltage for Focus§ — published value 2

    350 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • lute sin iauta alto r-or alto r-to-grid-No.1 voltage is 11000 volts, be

    11000 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.4 Current — published value 1

    -25

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.4 Current — published value 2

    25

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.2 Current — published value 1

    -15

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

Other

  • GRID-No.2 VOLTAGE

    500 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Heater positive with respect to cathode

    180 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.l-Circuit Resistance — published value 1

    1 mA

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-No.l-Circuit Resistance — published value 2

    5 mA

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • GRID-No.2-TO-CATHODE VOLTAGE

    500 V

    Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.