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Specialized - Cathode Ray ·CathodeRay

7566

Three-inch Radechon barrier-grid storage tube using electrical write and read with electrostatic focus and deflection. Designed for digital or analog computers and pulse-height analyzers, it combines high resolution with rugged construction.

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

Description

WCStiIlghOIISé WL-7566 December 1, 1959 BARRIER GRID STORAGE TUBE TYPE WL-7566 (RADECHON) - Rugged Construction High Resolution 2.6’ Useful Diameter Target 1 Shie!ded Target Assembly Coaxial Connection for Signal Output The WL-7566 is a 3" electrical write, electrical read, barrier-grid type storage tube, It is designed for service in digital or analog computer systems and pulse h eight analyzers. The WL-7366 uses a single gun with electrostatic focus and deflection. The electron-optical design of this gun mckes unnecessary any astigmatic correction AN / in order to achieve a fine electron beam of high current density at all deflections, A high degree of mechanical strength is imparted to the 4-bead gun structure by making the collector terminal an integral part of the gun. The coliector terminal is a thick Kovar ring sealed into the envelope of the tube and electricully con- nected to the collector wall coating and externsl conductive coating. Permanent axial alignment of the gun is t

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.

Source-derived physical/electrical section.

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

1947 Westinghouse

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • A high degree of mechanical strength is imparted to the

    4

    A high degree of mechanical strength is imparted to the 4-bead gun structure by

  • Voltage . . . .. e e e e

    8

    Voltage . . . .. e e e e 6.3 Volts Moximum Overall Length . . . . ... ... ... i 1.7/8"

  • Cureentd ..ottt it

    2.6

    Cureentd ..ottt it 0.6 Ampere Maximum Usable Target Diometer . . ... ... [P 2.6"

  • Cothode to Barrier Grid Voltage

    -3300

    Cothode to Barrier Grid Voltage ... .... -3300 max. Volts

  • Grid | to Barrier Grid Voltage

    -3000

    Grid | to Barrier Grid Voltage .. ...... -3000 max. Volts

  • Barrier Grid to Backplate

    3

    Barrier Grid to Backplate . ... ... ... 1600 £ 20% e Grid 1 to Cathode Voltage . . . ... ..... +3 max. Volts

  • ' Grid

    -3000

    ' Grid 3 to Grids 2 & d Voltoge. . . . .. ... -3000 mox. Volts

  • Cathade Voltage £

    100

    - Cathade Voltage £100 mox. Volis

  • Colloctor ta All Other Eloctrodes

    22

    Colloctor ta All Other Eloctrodes . .. . . 22 ppf Tttt :

  • Cathode to all Other Electrodes

    500

    Cathode to all Other Electrodes . .. ... 500 min. Magohms {With Barrier Grid Graundad)

  • Meater to Cathode

    -1100

    Meater to Cathode .. .. ......... .. 50 min. Megohms Cathodo Voltage .. . ... ..ot onnn -1100 Volis

  • Any one Defloction Plate to Grid

    -1140

    Any one Defloction Plate to Grid 1 Cutoff Voltage . ... ... ... N . -1140 Volts

  • all Other Deflection Plotes

    150

    all Other Deflection Plotes . . . .... 500 min. Megohms Grids 28 4 Voltage . . .. .. ...... e 4+150 Volta

  • Backplate to Barrier Geid

    77015

    Backplate to Barrier Geid . ... ..... . 100 min. Megohms Grid3Voltoge . ................ oo <77015% Volts

  • Grid

    150

    Grid 3 to all Other Electrodes .. ... .. 500 min. Megohms Collector Valtage. . . .. ... vi it +150 VYoits

  • Grid

    500

    Grid 1 1o oll Othor Electrodes .. ... .. 500 min. Megohms Back Plate Valtage:

  • FocusingMethod . . . .............. Electrostatic Reading Conditions . . ... .o vt vvnvans

    0

    FocusingMethod . . . .............. Electrostatic Reading Conditions . . ... .o vt vvnvans . 0 Volts

  • Doflacting Methed . ... ........ PR Electrostatic Writing Conditions . . ... .o vie i esnn

    40

    Doflacting Methed . ... ........ PR Electrostatic Writing Conditions . . ... .o vie i esnn +40 Volts

  • o h

    3000

    o h ... 125£7% Volta/lach/KY di 806 3000

  • shown in CE-A

    421

    shown in CE-A1421. electrons are emitted in proportion to the secondary

  • canter of tho target. voltage. For the WL

    7566

    canter of tho target. voltage. For the WL-7566 target, this ratio follows the

  • pulsed

    50

    pulsed 20 to 50 volts positive with respect to the barrier

  • scanned across the target. The barrier grid prevents

    150

    scanned across the target. The barrier grid prevents 150 VOLTS g VOIS I

  • / +

    50

    / + 50 VOLTS PERFORMANCE

  • (

    0

    (30 VOLTS 0 VOLTS cE avars

  • to either

    1

    to either +15 volts to write a *“1’” or -15 volts to write 8192 ‘0"’ 's or *‘1’* ’s is stored on the target. The re-

  • a *

    3

    a *0”’. In each case the beam duration is sufficient to generation cycle is set at 1 microsecond ‘‘read’, 3

  • bring the spot to equilibrinm. The Radechon grid drive microsecond ‘‘rewrite’’ and

    6

    bring the spot to equilibrinm. The Radechon grid drive microsecond ‘‘rewrite’’ and 6 microsecond ‘‘deflect’’.

  • current of approximately

    1024

    current of approximately 1 ua. of the 1024 locations is addressed N consecutive times.

  • quarter of the nominal ‘

    1

    quarter of the nominal ‘1" signal amplitude. Any

  • an ultor voltage of

    1100

    an ultor voltage of 1100 volts and a well focused spot.

  • consulted N consecutive times, and the smallest value September

    1195

    consulted N consecutive times, and the smallest value September 1958 Page 1195

  • target does not exceed

    1

    target does not exceed 2 to 1 with a cathode voltage of cations employing a conventional raster. The tube

  • =

    80

    = 80 Mesh Volts = O

  • 20 Curve {a})+--QI9-- -- SO --pamperes

    20

    20 Curve {a})+--QI9-- -- SO --pamperes

  • Curve (c)

    -150

    Curve (c)----0.38----150- pamperes

  • Curve (d)

    -200

    Curve (d)-- - 048----200 - -yamperes ¥

Characteristic

  • DJland DJ

    70

    DJland DJ2. ... ... U 11027% Volts/inch/ky MERIT FACTOR: waing 70% of usoble Min. Bogey .

  • 100 —4 100 SECONDARY EMISSION CHARACTERISTIC

    100

    100 —4 100 SECONDARY EMISSION CHARACTERISTIC

  • -1100 volts. The signal output actually is much more charact

    -1100

    -1100 volts. The signal output actually is much more characteristic of value in this application is its reso-