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Specialized - Cathode Ray ·CathodeRay

14RP4

Short-length P4 direct-view cathode-ray display tube using electrostatic focusing and wide-angle magnetic deflection, with white short-to-medium persistence, ion-trap operation, and typical 12 kV anode supply.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B12C
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

The Sylvania 14RP4 is a 14-inch television picture tube with electrostatic focus and magnetic deflection.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B12C
Base pins
-
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
15400 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

  • jected screen area of

    108

    jected screen area of 108 square inches.

  • ULTOR® VOLTAGE + &+ « & « « & & & & «

    13000 V

    ULTOR® VOLTAGE + &+ « & « « & & & & « . 13000 max. volts

  • Employing wide—~angle [(

    4

    Employing wide—~angle [(900) deflection, the GRID—No.4 VOLTAGE:

  • 14RP4 has a very short length—--a length approx- Positive value . . +

    500 V

    14RP4 has a very short length—--a length approx- Positive value . . + v « . v ¢ v . . 500 max. volts

  • imately

    500 V

    imately 2 inches shorter than a type having the Negative value « + + v v &« o & v o . 500 max. volts

  • GRID-N0

    400 V

    GRID-N0.2 VOLTAGE. . . . . . . . . . 400 max. volts

  • same size faceplate and

    1

    same size faceplate and 700 deflection. Other GRID-No.1 VOLTAGE:

  • design features of the |

    160 V

    design features of the |4RP4 include an external Negative peak value. . . . . . . . . 160 max. volts

  • Negative bias value. . « . « + «

    110 V

    Negative bias value. . « . « + « . . 110 max. volts

  • conductive bulb coating which with the internal Positive bias value

    0 V

    conductive bulb coating which with the internal Positive bias value. . . . . . . . . 0 max. volts

  • conductive coating forms a supplementary filter Positive peak valu€. « « o« + o« o o &

    2 V

    conductive coating forms a supplementary filter Positive peak valu€. « « o« + o« o o & 2 max. volts

  • Heater negative with respect to cathode

    180 V

    Heater negative with respect to cathode 180 max., volts

  • ternal, single-field magnet. Heater positivewith respect tocathode

    180 V

    ternal, single-field magnet. Heater positivewith respect tocathode 180 max. volts

  • With any ultor voltage (E._

    8000

    With any ultor voltage (E._3) between 8000% With any ultor-to-grid-No.l voltage

  • Y g Hlesk and

    14000 V

    Y g Hlesk and 14000 volts (Bogg,) betuween 8000% and 14000 wolts

  • and grid-¥o

    2 V

    and grid-¥o.2 voltage (E.,p) between 200 and 400 volts and grid-No.2-to-grid-No.l voltage

  • Grid—No

    510 V

    Grid—No.4 Voltage Required for Focus: (Bcog,) between 225 and 510 volts

  • 30 volts for each 1000-volt change in Ecgke voltage Required for Focus

    1000 V

    30 volts for each 1000-volt change in Ecgke voltage Required for Focus:

  • 10 volts for each 100-volt change in Ecoke 30 volts for each 1000-volt

    1000 V

    10 volts for each 100-volt change in Ecoke 30 volts for each 1000-volt change in Ecggq.

  • proximately

    100 V

    proximately 25 volts for each 50-uamp change in ultor 10 volts for each 100-volt change in Ecpgy-

  • see Exanples of Use of Design Ranges. proximately

    50 V

    see Exanples of Use of Design Ranges. proximately 25 volts for each 50—uamp change in ultor

  • Grid-No

    1

    Grid-No.1 Voltage (Ec ) for

  • Visual Extinction

    1

    Visual Extinction 1 For typical values, see Examples of Use of Design Ranges.

  • for Grid=Drive Service Cathode-to~Grid-No

    1

    for Grid=Drive Service Cathode-to~Grid-No.1 Voltage (Ekg1)

  • Grid-No

    25

    Grid-No.4 Current. . . -25 to +25 pamp

  • Grid-No

    15

    Grid-No.2 Current. . . -15 to +15 pamp

  • Grid-No

    25

    Grid-No.4 Current. . . . -25 to +25 pamp

  • Current (Average)™*. qlEcsk/

    15 mA

    Current (Average)™*. qlEcsk/1uooo X 38 ma Grid-No.2 Current, . . . -15 to +15 pamp

  • of PM lon~Trap Average) .\/Ecsgll1uooo X

    38 mA

    of PM lon~Trap Average) .\/Ecsgll1uooo X 38 ma

  • W¥ith ultor voltage of

    14000 V

    W¥ith ultor voltage of 10000 14000 volts Examples of Use of Design Ranges:

  • voltage of

    14000 V

    voltage of 300 300 volts voltage of 10000 14000 volts

  • Grid-No

    2

    Grid-No.4 Voltage for and grid-No.2-to-grid-

  • Focus with Ultor ¥o.l voltage of

    300 V

    Focus with Ultor ¥o.l voltage of 300 300 volts

  • Current of

    1 V

    Current of 100 pamp. . . =50 to +350 +70 to +470 volts Grid—-No, 4—to~Grid—No.1

  • Grid-No

    1

    Grid-No.1 Voltage for Voltage for Focus with

  • Focused Raster . . . . . =

    47 V

    Focused Raster . . . . . =26 to =70 =26 to -70 volts 100 gamp .+ + . . . . -50 to +350 +70 to+47¢C volts

  • White-level value Raster . . «

    59 V

    White-level value Raster . . « . . . . . 26 to 59 26 to 59 volts

  • (Peak positive)

    1 V

    (Peak positive). . . . 26 to 70 26 to 70 volts Cathode-to-Grid-No.1

  • Maximum Circuit Values! (Peak negative)

    59 V

    Maximum Circuit Values! (Peak negative). . . 26 to 59 26 to 59 volts

  • Grid-No

    1.5

    Grid-No.1-Circuit Resistance . . . . . 1.5 max, megohms Min, Field Strength of

  • CATHODE-DRIVE™ SERVICE Grid-No

    1.5

    CATHODE-DRIVE™ SERVICE Grid-No.1-Circuit Resistance . . . . . 1.5 max. megohms

  • ULTOR.—TO—GRID—NO.l VOLTAGE.,

    14000 V

    ULTOR.—TO—GRID—NO.l VOLTAGE., . . . . 14000 max. volts the electrons in the beam prior to its deflection. In

  • GRID~NO

    5

    GRID~NO.4~TO~GRID—=NO.1 VOLTAGE: the 14RP4, the ultor function is performed by grid No.5.

  • Positive value + « ¢ v & « v & & &

    14 V

    Positive value + « ¢ v & « v & & & 500 max. volts together within the 14RPY, they are collectively re=-

  • Negative value . . . . . « . «

    500 V

    Negative value . . . . . « . « . . 500 max., volts ferred to simply as "ultor"™ for convenience inpresent-

  • GR|

    510 V

    GR|1D-N0O.2-TO~GRID—=NO.1 VOLTAGE . . 510 max., volts ing data and curves.

  • CATHODE~TO-GRID-No

    1

    CATHODE~TO-GRID-No.1 VOLTAGE: A& Grid drive is the operating condition in which the

  • Positive peak value

    1 V

    Positive peak value. . . . . . . . 160 max. volts videosignal varies the grid No.1 potential with respect

  • Positive bias value. « + « + « » &

    110 V

    Positive bias value. « + « + « » & 110 max. volts

  • Negative bias value

    0 V

    Negative bias value. . . . . . . . 0 max. volts # Brilliance and definition decrease with decreasing

  • ultor voltage or uttor-to-grid-No

    1

    ultor voltage or uttor-to-grid-No.1voltage. In general,

  • Negative peak value. « «

    1 V

    Negative peak value. « « 4« v « + & 2 max, volts the ultor voltage or ultor-to-grid-No.1 voltage should

  • PEAK HEATER—~CATHODE VOLTAGE: not be less than

    8000 V

    PEAK HEATER—~CATHODE VOLTAGE: not be less than 8000 volts.

  • to cathode

    180 V

    to cathode. 180 max. volts with the trailing edge of the pole pieces located over

  • to cathode

    180 V

    to cathode. 180 max. volts give maximum brightness.

  • of the PM ion-trap magnet shoulg be added to the within £

    10

    of the PM ion-trap magnet shoulg be added to the within £ 10 per cent of line-center voltage

  • should not exceed the specified minimum value by more value of |

    17 V

    should not exceed the specified minimum value by more value of |17 volts.

  • ratings permit} up to

    16

    ratings permit} up to 16 kilovolts {absolute

  • OPERATING CONSIDERATIONS posure at close range. Above |

    6

    OPERATING CONSIDERATIONS posure at close range. Above |6 kilovolts,

  • iiEf.—

    6.3 V

    iiEf.— 6.3 YOLTS tHE¢ = 6.3 VOLTS

  • [ ULTOR VOLTS =

    14000 V

    [ ULTOR VOLTS = 8000 TO 14000 FH ULTOR-TO-GRID-NO.1 VOLTS = 8000 TO 14000

  • 1 GRID-No.4 VOLTS ADJUSTED FOR FOCUS 5 GRID-No.4-TO-GRID-No.1 VOLTS AD

    1 V

    1 GRID-No.4 VOLTS ADJUSTED FOR FOCUS 5 GRID-No.4-TO-GRID-No.1 VOLTS ADJUSTED FOR FOCUSi

  • GRID-No

    1 V

    GRID-No.1 VOLTS

  • GRID-No

    1 V

    GRID-No.2 VOLTS GRID-No.2-TO-GRID-No.1 VOLTS

  • ultor voltage, ultor current, and grid-No

    2

    ultor voltage, ultor current, and grid-No.2 I. Calculate the maximum focusing-voltage

  • designers flexibility in determining the approx- from

    12000 V

    designers flexibility in determining the approx- from 10000 to 12000 volts by applying the rule

  • particular requirements. the rate of approximately

    1000 V

    particular requirements. the rate of approximately 30 volts for each 1000~

  • Ef =

    6.3 V

    Ef =63 VOLTS Ef =63 VOLTS [E¢=6.3 YOLTS Ef=6.3 VOLTS

  • ULTOR-TO-GRID-N#

    1 V

    ULTOR-TO-GRID-N#1 VOLTS = 10000 ULTOR VOLTS = 10000 FULTOR-TO-GRID-No. 1 ULTOR VOLTS=

Data set 02

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Maximum Plate Voltage

    15400 V

  • Typical Anode Voltage

    12000 V

Characteristic

  • Phosphor

    P4

  • Focusing Method

    Electrostatic

  • Deflecting Method

    Magnetic

Data set 03

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

  • Focusing Method

    Electrostatic text

  • Deflection Method

    Magnetic text

  • Fluorescence

    White text

  • Persistence

    Short to Medium text

  • Phosphor

    P4 text

  • Horizontal Deflection Angle

    85 deg

    Approximate

  • Diagonal Deflection Angle

    90 deg

    Approximate

  • Light Transmittance

    78 percent

    Approximate

  • Ion Trap

    External Single Field text

  • Cathode-to-All Capacitance

    5 pF

    Approximate

  • Grid1-to-All Capacitance

    6 pF

    Approximate

  • External Coating-to-Anode Capacitance Minimum

    800 pF

  • External Coating-to-Anode Capacitance Maximum

    1200 pF

Other

  • Anode Voltage

    12000 V

  • Grid2 Voltage

    300 V

  • Ion Trap Magnet Current

    35 mA

    Representative

  • Ion Trap Field Strength

    40 gauss

  • Maximum Anode Voltage

    15400 V

  • Maximum Grid2 Voltage

    440 V

  • Focus Voltage Minimum

    -50 V

    Grid4

  • Focus Voltage Maximum

    350 V

    Grid4

  • Grid1 Cutoff Voltage Minimum

    -70 V

  • Grid1 Cutoff Voltage Maximum

    -26 V

  • Maximum Grid1 Circuit Resistance

    1.5 Mohm