Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

23YP4

Large P4 monochrome television picture tube designed for high-voltage direct-view service, using manufacturer-specified focusing, magnetic deflection, and beam-control arrangements for type 23YP4.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
NEOEIGHTAR7
Base pins
6
Nominal heater
6.3 V / 5 A

Description

Twenty-three-inch rectangular bonded-shield television CRT with electrostatic focus, magnetic deflection, and aluminized P4 screen.

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
5 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
22000 V
Max screen voltage
550 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

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Maximum Anode voltage

    22000 V

    Maximum Anode voltage ...... 22,000 25,000 18,000 22,000 Volts

  • Grid No. 2 Voltage

    550 V

    Grid No. 2 Voltage ........ 700 550 Volts

  • Anode voltage

    16000 V

    Anode voltage .......... 16,000 16,000 Volts

  • Grid No. 4 Voltage for Focus

    400 V

    Grid No. 4 Voltage for Focus .... 0 to 400 0 to +400 Volts

  • Grid No. 2 Voltage

    300 V

    Grid No. 2 Voltage ........ 500 300 Volts

CircuitValue

  • Grid No. 1 Circuit Resistance

    1.5 Mohm

    Grid No. 1 Circuit Resistance .... 1.5 Megohms Max.

Data set 02

1971 RCA HB3 Binder 1 of 7

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • LOW-VOLTAGE ELECTROSTATIC FOCUS

    92 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 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

    5 V

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

  • Heater Warm-Up Time (Average)

    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 (Approx )

    40

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

  • Projected Area of Screen

    282

    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.

  • of focused raster — published value 1

    -35 V

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

  • of focused raster — published value 2

    -72 V

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

Other

  • ULTOR VOLTAGE

    22000 V

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

  • GRID-No.2 VOLTAGE

    550 V

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

  • Grid-No.l-Circuit Resistance

    1.5 mA

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