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Specialized - Cathode Ray ·CathodeRay

23AHP4

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 23AHP4.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
NEOEIGHTAR7
Base pins
6
Nominal heater
6.3 V / 30 A

Description

The Sylvania 23AHP4 is a 23-inch aluminized P4 television cathode-ray tube with electrostatic focus and magnetic deflection.

Socket description

Small-button Neoeightar 7-contact CRT base family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
NEOEIGHTAR7
Base pins
6
Nominal heater voltage
6.3 V
Nominal heater current
30 A
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
16 V
Max screen voltage
700 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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Phosphor

    P4

  • Deflection method

    Magnetic

  • Focusing method

    Electrostatic

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    600 mA

  • Heater Warm-up Time

    11 s

  • Focusing Method

    Electrostatic text

  • Deflection Method

    Magnetic text

  • Horizontal Deflection Angle

    80 deg

    Approximate

  • Vertical Deflection Angle

    65 deg

    Approximate

  • Diagonal Deflection Angle

    92 deg

    Approximate

  • Phosphor

    Aluminized P4 text

  • Fluorescence

    White text

  • Persistence

    Short to Medium text

  • Light Transmittance

    78 percent

    Approximate

  • Cathode-to-All Capacitance

    5 pF

    Approximate

  • Grid1-to-All Capacitance

    6 pF

    Approximate

  • External Coating-to-Anode Capacitance Minimum

    1700 pF

  • External Coating-to-Anode Capacitance Maximum

    2500 pF

Other

  • Maximum Anode Voltage

    22000 V

  • Minimum Anode Voltage

    12000 V

  • Maximum Grid2 Voltage

    550 V

  • Maximum Heater-Cathode Voltage During Warmup

    450 V

    Duration<=15s

  • Maximum Heater-Cathode Voltage After Warmup

    200 V

  • Typical Anode Voltage

    16000 V

  • Typical Grid2 Voltage

    300 V

  • Focus Voltage Minimum

    -550 V

  • Focus Voltage Maximum

    1100 V

  • Cutoff Voltage Minimum

    -72 V

  • Cutoff Voltage Maximum

    -35 V

  • Maximum Grid1 Circuit Resistance

    1.5 Mohm

  • Drive Mode

    Grid Drive text

Data set 03

1971 RCA HB3 Binder 1 of 7

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater Current at 6.3 volts — published value 1

    6.3 V

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

  • Heater Current at 6.3 volts — published value 2

    600 V

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

  • Heater Current at 6.3 volts — published value 3

    30 V

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

  • Heater Warm-Up Time (.overage)

    11

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

  • Grid No.l to all other electrodes

    6

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

  • Light transmission at center (Approx )

    78

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

  • Grid-No.4 Voltage for focus — published value 1

    0 V

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

  • Grid-No.4 Voltage for focus — published value 2

    400 V

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

  • extinction of focused raster* — published value 1

    -36 V

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

  • extinction of focused raster* — published value 2

    -94 V

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

  • voltage (Ec5g 1 1 of — published value 1

    1 V

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

  • voltage (Ec5g 1 1 of — published value 2

    1 V

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

  • voltage (Ec5g 1 1 of — published value 3

    18000 V

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

  • voltage lEc2g 1 1 'of — published value 1

    1 V

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

  • voltage lEc2g 1 1 'of — published value 2

    1 V

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

  • Voltage for focus — published value 1

    0 V

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

  • Voltage for focus — published value 2

    400 V

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

  • focused raster — published value 1

    36 V

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

  • focused raster — published value 2

    78 V

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

  • focus of any intlivitlual tube will have a value anywhere between 0 antl

    0

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

  • 0-Ray Warning

    16 V

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

  • permits operation at voltages as high as 22 ki lovolts IDesign

    22 V

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

  • conditions involve voltages in excess of 16 ki lovolts

    16 V

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

  • ULTOR VOLTS=11000 TO 22000 — published value 1

    11000 V

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

  • ULTOR VOLTS=11000 TO 22000 — published value 2

    22000 V

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

  • GRID-Ns 4 VOLTS ADJUSTED FOR FOCUS

    4 V

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

  • GRID—N~2 VOLTS

    2 V

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

  • ULTOR—TO—GRID—Nsl VOLTS=11000 TO 22000 — published value 1

    11000 V

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

  • ULTOR—TO—GRID—Nsl VOLTS=11000 TO 22000 — published value 2

    22000 V

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

Other

  • Grid-No.l-Circuit Resistance

    1.5 mA

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

  • GRID-No.2-TO-GRID-No.1 VOLTAGE

    700 V

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

  • GRID-No.2-TO-CATHODE VOLTAGE

    550 V

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

  • maximum value 1, shielding of this picture tube for X-ray

    1

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