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Specialized - Cathode Ray ·CathodeRay

F7172

Two-and-one-half-inch direct-view storage CRT with separate writing and flooding guns, capable of writing, storing, displaying, and erasing electronic information.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

The F7172 is a 2.5-inch direct-view storage cathode-ray tube using separate writing and flooding guns to write, store, display, and erase electronic information.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
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

No fixed ratings are recorded for this section.

Published maximum ratings and characteristics audited; remaining values retained densely in parameter table.

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

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • THE F=T1 [1]

    72

    THE F=T172 ts A 2-1/2 IncH 1ATRON (DIRECT VIEW STORAGE CATHODE-RAY TUBE)

  • THE F=T1 [2]

    2

    THE F=T172 ts A 2-1/2 IncH 1ATRON (DIRECT VIEW STORAGE CATHODE-RAY TUBE)

  • THE F=T1 [3]

    -1

    THE F=T172 ts A 2-1/2 IncH 1ATRON (DIRECT VIEW STORAGE CATHODE-RAY TUBE)

  • THE F=T1 [4]

    2

    THE F=T172 ts A 2-1/2 IncH 1ATRON (DIRECT VIEW STORAGE CATHODE-RAY TUBE)

  • THE F=T1 [5]

    1

    THE F=T172 ts A 2-1/2 IncH 1ATRON (DIRECT VIEW STORAGE CATHODE-RAY TUBE)

  • IT

    1

    IT 1S ELECTROSTATICALLY FOCUSED AND DEFLECTEDs |T INCORPORATES A CATHODE-

  • CONT INUOUSLY EXCITES THE [1]

    1

    CONT INUOUSLY EXCITES THE 1-7/8 INCH VIEWING SCREEN THROUGH THE INSULATOR

  • CONT INUOUSLY EXCITES THE [2]

    -7

    CONT INUOUSLY EXCITES THE 1-7/8 INCH VIEWING SCREEN THROUGH THE INSULATOR

  • CONT INUOUSLY EXCITES THE [3]

    8

    CONT INUOUSLY EXCITES THE 1-7/8 INCH VIEWING SCREEN THROUGH THE INSULATOR

  • ALTHOUGH THE OVER=-ALL OPERATING VOLTAGE [1]

    15 V

    ALTHOUGH THE OVER=-ALL OPERATING VOLTAGE 15 ONLY 4500 voLTS, SIGNALS ARE

  • ALTHOUGH THE OVER=-ALL OPERATING VOLTAGE [2]

    4500 V

    ALTHOUGH THE OVER=-ALL OPERATING VOLTAGE 15 ONLY 4500 voLTS, SIGNALS ARE

  • CURRENT [1]

    600 mA

    CURRENT 0.6 1.2 AMPERES

  • CURRENT [2]

    1.2 A

    CURRENT 0.6 1.2 AMPERES

  • GRID # [1]

    1

    GRID #1 TO ALL OTHER ELECTRODES k.2 UUF

  • GRID # [2]

    2

    GRID #1 TO ALL OTHER ELECTRODES k.2 UUF

  • CATHODE TO ALL OTHER ELECTRODES

    0.5

    CATHODE TO ALL OTHER ELECTRODES 0.5 UUF

  • SCREEN VOLTAGE

    5000 V

    SCREEN VOLTAGE 5000 VoLTs

  • BACKING ELECTRODE VoLTAGE (PeAK)

    25 V

    BACKING ELECTRODE VoLTAGE (PeAK) 25 VoLTS

  • COLLECTOR VOLTAGE

    200 V

    COLLECTOR VOLTAGE 200 VoLTS

  • ANoDE #U4 VoLTaGE

    100 V

    ANoDE #U4 VoLTaGE 100 VoLTs

  • ANODE # [1]

    3 V

    ANODE #3 gCOLLlMATING ELECTRODE) VOLTAGE 50 VoLTs

  • ANODE # [2]

    50 V

    ANODE #3 gCOLLlMATING ELECTRODE) VOLTAGE 50 VoLTs

  • AnopE # [1]

    2 V

    AnopE #2 (CoLLIMATING ELECTRODE) VOLTAGE 50 ~ VouLts

  • AnopE # [2]

    50 V

    AnopE #2 (CoLLIMATING ELECTRODE) VOLTAGE 50 ~ VouLts

  • ANODE # [1]

    1 V

    ANODE #1 VOLTAGE 20 VoLTs

  • ANODE # [2]

    20 V

    ANODE #1 VOLTAGE 20 VoLTs

  • Gr1D # [1]

    3 V

    Gr1D #3 (FocusiNg ELECTRODE) VOLTAGE 300%» VoLTs

  • Gr1D # [2]

    300 V

    Gr1D #3 (FocusiNg ELECTRODE) VOLTAGE 300%» VoLTs

  • GRID # [1]

    2 V

    GRID #2 VOLTAGE 1100%* VoLTs

  • GRID # [2]

    1100 V

    GRID #2 VOLTAGE 1100%* VoLTs

  • GR1D # [1]

    1 V

    GR1D #1 VOLTAGE *%0 1o 100 VoLTs

  • GR1D # [2]

    0 V

    GR1D #1 VOLTAGE *%0 1o 100 VoLTs

  • GR1D # [3]

    1 V

    GR1D #1 VOLTAGE *%0 1o 100 VoLTs

  • GR1D # [4]

    100 V

    GR1D #1 VOLTAGE *%0 1o 100 VoLTs

  • CATHODE VOLTAGE

    -1000 V

    CATHODE VOLTAGE -1000 O REFERENCE VoLTS

  • PEAK VOLTAGE BETWEEN GRID #

    2 V

    PEAK VOLTAGE BETWEEN GRID #2 AND

  • HEATER NEGATIVE WiTH RESPECT To CATHODE [1]

    125

    HEATER NEGATIVE WiTH RESPECT To CATHODE 125 125 VoLTts

  • HEATER NEGATIVE WiTH RESPECT To CATHODE [2]

    125

    HEATER NEGATIVE WiTH RESPECT To CATHODE 125 125 VoLTts

  • HeATER POSITIVE WITH ReEsPECT To CATHODE [1]

    10

    HeATER POSITIVE WITH ReEsPECT To CATHODE 10 10 VoLtTs

  • HeATER POSITIVE WITH ReEsPECT To CATHODE [2]

    10

    HeATER POSITIVE WITH ReEsPECT To CATHODE 10 10 VoLtTs

  • SCREEN VOLTAGE

    4000 V

    SCREEN VOLTAGE 4000 VoLTs

  • SCREEN CURRENT (MAXIMUM)

    750 mA

    SCREEN CURRENT (MAXIMUM) 0.75 MA

  • VOLTAGE goc)

    10 V

    VOLTAGE goc) 10 VoLTs

  • VoLtace (PuLse)

    10

    VoLtace (PuLse) 10 VoLTs

  • COLLECTOR VOLTAGE

    150 V

    COLLECTOR VOLTAGE 150 VoLTs

  • ANODE #l VOLTAGE

    75 V

    ANODE #l VOLTAGE 75 VoLTs

  • AnoDE # [1]

    3 V

    AnoDE #3 VoLTAGE éADJUST FOR COLLIMATION) 12 VoLTs

  • AnoDE # [2]

    12 V

    AnoDE #3 VoLTAGE éADJUST FOR COLLIMATION) 12 VoLTs

  • ANODE # [1]

    2

    ANODE #2 VoLTace (ADJUST FOR COLLIMATION) 15 VoLTs

  • ANODE # [2]

    15

    ANODE #2 VoLTace (ADJUST FOR COLLIMATION) 15 VoLTs

  • ANODE # [1]

    1 V

    ANODE #1 VoLTAGE 15 VoLTs

  • ANODE # [2]

    15 V

    ANODE #1 VoLTAGE 15 VoLTs

  • GrID # [1]

    3 V

    GrID #3 (ApJgusT For Focus) VoLTAGE -300 to =325 VoLTS

  • GrID # [2]

    -300 V

    GrID #3 (ApJgusT For Focus) VoLTAGE -300 to =325 VoLTS

  • GrID # [3]

    325 V

    GrID #3 (ApJgusT For Focus) VoLTAGE -300 to =325 VoLTS

  • GRID # [1]

    2 V

    GRID #2 VOLTAGE 0 VoLTs

  • GRID # [2]

    0 V

    GRID #2 VOLTAGE 0 VoLTs

  • GRID # [1]

    1 V

    GRID #1 VOLTAGE -4gs5 VoLTs

  • GRID # [2]

    -4 V

    GRID #1 VOLTAGE -4gs5 VoLTs

  • VoLTAGe (PEAK TO PEAK)

    45 V

    VoLTAGe (PEAK TO PEAK) 45 VoLts

  • CurrenT (Note [1]

    1 A

    CurrenT (Note 1) 0.5 (Max.) VoLTs

  • CurrenT (Note [2]

    500 mA

    CurrenT (Note 1) 0.5 (Max.) VoLTs

  • CATHODE VOLTAGE [1]

    -4 V

    CATHODE VOLTAGE -4t50 O REFERENCE VoLTS

  • CATHODE VOLTAGE [2]

    0 V

    CATHODE VOLTAGE -4t50 O REFERENCE VoLTS

  • CATHODE CURRENT

    16 A

    CATHODE CURRENT 16 MA

  • BACKING-ELECTRODE ERASING VOLTAGE PuLses (Note

    2 V

    BACKING-ELECTRODE ERASING VOLTAGE PuLses (Note 2)

  • VOLTAGES [1]

    3 V

    VOLTAGES 3 - 10 VoLTS

  • VOLTAGES [2]

    10 V

    VOLTAGES 3 - 10 VoLTS

  • FREQUENCY [1]

    5000

    FREQUENCY 5000 - 50 PPS

  • FREQUENCY [2]

    50

    FREQUENCY 5000 - 50 PPS

  • GR1 [1]

    0 V

    GR10 #3 VOLTAGE 75 PERCENT

  • GR1 [2]

    3 V

    GR10 #3 VOLTAGE 75 PERCENT

  • GR1 [3]

    75 V

    GR10 #3 VOLTAGE 75 PERCENT

  • GRI1D # [1]

    1 V

    GRI1D #1 B1AS VOLTAGE 3 PERCENT

  • GRI1D # [2]

    3 V

    GRI1D #1 B1AS VOLTAGE 3 PERCENT

  • Viewing Time (Note [1]

    6

    Viewing Time (Note 6 30 SECONDS

  • Viewing Time (Note [2]

    30

    Viewing Time (Note 6 30 SECONDS

  • Published value

    1 A

    1. DEFLECTING ELECTRODES INTERCEPT FLOODING BEAM CURRENT REFLECTED AT THE

  • Published value

    2

    2. THE SPECIFIED RANGE OF PULSE FREQUENCIES ADJUSTS THE VIEWING TIME

  • FROM ABOUT [1]

    1

    FROM ABOUT 1 To 40 seconDs USING 0.5 MICROSECOND PULSES. THE PULSE

  • FROM ABOUT [2]

    40

    FROM ABOUT 1 To 40 seconDs USING 0.5 MICROSECOND PULSES. THE PULSE

  • FROM ABOUT [3]

    0.5

    FROM ABOUT 1 To 40 seconDs USING 0.5 MICROSECOND PULSES. THE PULSE

  • Published value

    3 V

    3. ANODE VOLTAGE ADJUSTMENTS ARE NECESSARY TO ADJUST COLLIMATION AND SPOT

  • STAT1ONARY BEAM TO WRITE A SPOT TO

    90

    STAT1ONARY BEAM TO WRITE A SPOT TO 90 PERCENT OF MAXIMUM BRIGHTNESS.

  • Published value

    5

    5. THE SHORTEST TIME TO REDUCE THE OUTPUT BRIGHTNESS FROM MAX IMUM

  • MUM BRIGHTNESS LEVEL IN THE USEFUL VIEWING AREA

    1

    MUM BRIGHTNESS LEVEL IN THE USEFUL VIEWING AREA 1S STILL VISIBLE UNDER

  • SPOT WRITTEN WITH A FOCUSED STATIONARY BEAM TO A BRIGHTNESS ofF

    90

    SPOT WRITTEN WITH A FOCUSED STATIONARY BEAM TO A BRIGHTNESS ofF 90

  • THE VIEWING=SCREEN VOLTAGE SHOULD BE LIMITED SO AS NEVER TO EXCEED

    6 V

    THE VIEWING=SCREEN VOLTAGE SHOULD BE LIMITED SO AS NEVER TO EXCEED 6 KILO-

  • RESISTANCE OF THE HIGH=-VOLTAGE LEAD SHOULD BE

    1 V

    RESISTANCE OF THE HIGH=-VOLTAGE LEAD SHOULD BE 1 MEGOHM.

  • ATTENTION

    1

    ATTENTION 1S AGAIN CALLED TO THE FACT THAT THE STORAGE SURFACE CAN BE ERASED

  • THE METAL RING WHICH ENCIRCLES THE FACEPLATE OF THE T1 [1]

    72

    THE METAL RING WHICH ENCIRCLES THE FACEPLATE OF THE T172 1S AT VIEWING=

  • THE METAL RING WHICH ENCIRCLES THE FACEPLATE OF THE T1 [2]

    1

    THE METAL RING WHICH ENCIRCLES THE FACEPLATE OF THE T172 1S AT VIEWING=