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Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

24AP4A

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 24AP4A.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
12O
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
12O
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

12O - 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
16000 V
Max screen voltage
410 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

    16000 V

  • Typical Anode Voltage

    15000 V

  • Maximum Grid2 Voltage

    410 V

  • Typical Grid2 Voltage

    300 V

Characteristic

  • FocusingMethod

    Magnetic

  • DeflectingMethod

    Magnetic

  • DiagonalDeflectionAngleApproximate

    70 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 d DEFLECTION — value 1

    169116

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

  • MAGNETIC FOCUS d DEFLECTION — value 2

    221

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

  • MAGNETIC FOCUS d DEFLECTION — value 3

    8

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

  • DEFLECTION ANGLE (APPROX.)

    70 degrees

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

  • DIRECT INTERELECTRODE CAPACITANCES (APPROX.)

    1

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

  • GRID #1 TO ALE OTHER ELECTRODES — value 1

    1

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

  • GRID #1 TO ALE OTHER ELECTRODES — value 2

    0

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

  • GRID #1 TO ALE OTHER ELECTRODES — value 3

    6

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

  • FACEPLATE LIGHT TRANSMISSION — value 1

    11 percent

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

  • FACEPLATE LIGHT TRANSMISSION — value 2

    62 percent

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

  • HEATER

    6 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

    150 V

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

  • q IF THIS TUBE IS OP E0. ATED AT VOLTAGES IN EXCESS OF 1E,000 VOL TS r X-PAY RADIATION SHIELDING MAY — value 1

    0 V

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

  • q IF THIS TUBE IS OP E0. ATED AT VOLTAGES IN EXCESS OF 1E,000 VOL TS r X-PAY RADIATION SHIELDING MAY — value 2

    1 V

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

  • q IF THIS TUBE IS OP E0. ATED AT VOLTAGES IN EXCESS OF 1E,000 VOL TS r X-PAY RADIATION SHIELDING MAY — value 3

    0 V

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

  • BCATH ODE SHOULD BE RETURN EO TO OXE SIDE OR TO THE MID-TAP OF THE HEATER TRANSFORMER WINDING. — value 1

    0

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

  • BCATH ODE SHOULD BE RETURN EO TO OXE SIDE OR TO THE MID-TAP OF THE HEATER TRANSFORMER WINDING. — value 2

    0

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

  • BCATH ODE SHOULD BE RETURN EO TO OXE SIDE OR TO THE MID-TAP OF THE HEATER TRANSFORMER WINDING. — value 3

    0

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

  • DC ANODE r GRID #3 VOLTAGE — value 1

    3 V

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

  • DC ANODE r GRID #3 VOLTAGE — value 2

    15000 V

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

  • DC GRID #2 VOLTAGE — value 1

    2 V

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

  • DC GRID #2 VOLTAGE — value 2

    300 V

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

  • DC GRID #1 VOLTA GE C — value 1

    1 V

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

  • DC GRID #1 VOLTA GE C — value 2

    33 V

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

  • DC FOCUSING COIL CURRENT (APPROX.)

    114 mA

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

  • ION TRAP (RATED STRENGTH) APPRO%.

    10

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

  • CV ISUAI EXTiNLTI ON OF UNOEFL ECTED FOCUSED SPOT. — value 1

    1

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

  • CV ISUAI EXTiNLTI ON OF UNOEFL ECTED FOCUSED SPOT. — value 2

    0

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

  • CV ISUAI EXTiNLTI ON OF UNOEFL ECTED FOCUSED SPOT. — value 3

    0

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

Other

  • MAXIMUM DC ANODE fGRID #.3 VOL TAGE A — value 1

    3 V

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

  • MAXIMUM DC ANODE fGRID #.3 VOL TAGE A — value 2

    16000 V

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

  • MAXIMUM DC GRID #2 VOLTAGE — value 1

    2 V

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

  • MAXIMUM DC GRID #2 VOLTAGE — value 2

    410 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.

  • MA%IMUM DC PEAK HEATER- CATHODE VOL TAGE:S

    1

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

  • MA%IMUM GRID #1 CIRCUIT RESISTANCE — value 1

    1 Mohm

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

  • MA%IMUM GRID #1 CIRCUIT RESISTANCE — value 2

    1 Mohm

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

  • MA%IMUM GRID #1 CIRCUIT RESISTANCE — value 3

    1.5 Mohm

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