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

Specialized - Cathode Ray ·CathodeRay

A61120W2

Large direct-view monochrome television picture tube with magnetic deflection and electrostatic focusing. Its rectangular aluminized screen and wide-angle scanning are designed for conventional television receiver display service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
EIGHTAR7
Base pins
-
Nominal heater
6.3 V / 360 mA

Description

61 cm rectangular picture tube with 110° 2. Typical Operating Conditions deflection angle, electrostatic focusing, aluminized screen and steel reinforcement

Socket description

Eightar 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
EIGHTAR7
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
360 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

No fixed ratings are recorded for this section.

CRT section. Maximum ratings, operating conditions, capacitances, optical and mechanical values are preserved as parameters where published.

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

1976 ITT Picture Tubes

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • A 61

    -120 W

  • Published value

    61 cm

  • U@

    63 V

  • Ui 03 ¥

    6 %

  • Uazsa

    20 KV

  • 92 400

    500 V

  • Ugs @ 0...400

    0 to 400 V

  • Ugagss max &

    20 KV

  • Ugagsa min_ ®

    13 kV

  • Published value

    9 k

  • 9 k Rg3g (2)

    5 a

  • Uqd p max

    2500 V

  • (=Ug4) max

    500 V

  • Hud min

    470 ohm

  • Ug2 max

    550 V

  • Ug2 min

    350 V

  • Rg2 min

    470 ohm

  • Lens

    2 V

  • Bulb All-Glass Type {(=Ug1) max

    150 V

  • Base German Standard (-=Ug1) b max

    400 V

  • Deflection Method Magnetic Pim max (]

    10 mW/cm

  • Deflection Angles Diagonal 110° Uoiemx 1 ® ®

    410 V

  • Horizontal 99° U_fkmax 2 @ @

    250 V

  • NN > S ¥ Vertical 82“ U---fa"kp max

    300 V

  • Neck Diameter

    28.6 mm

  • Neck Diameter 28,6 mm : U+f.|"!< max (2)

    135 V

  • S

    44 %

CircuitDesignRatings

  • minized 1g2 < *

    5 uA

  • Fluorescence Colour White [ < T

    25 A

  • Colour Temperature 12

    0 °K

  • Colour Temperature 12 000 °K (approx.) Amim’ = (2)

    2 MQ

  • Minimum Useful 481 x

    376 mm

Capacitance

  • Diagonal

    577.56 mm

  • Overall Length 362£

    8 mm

  • Overall Length 362£8 mm Cal approx. (2)

    6 pF

  • Weiaht

    13 kg

  • Weiaht 13 kg (approx.) Gk approx. (2)

    5 pF

  • Cyg3p5alm max o

    2600 pF

  • Implosion protection by steel reinforcement. Cg

    395 a

  • Implosion protection by steel reinforcement. Cg395a/m _min (2)

    1700 pF

  • Admitted by Association of German Elec- Cg3gSa/m’ max

    580 pF

  • A 61

    -120 W