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Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

A44280W

European rectangular monochrome television picture tube with electrostatic focusing, magnetic deflection, and an aluminized or metal-backed screen. Manufacturer documentation supports direct-view receiver service with wide-angle deflection and compact cabinet geometry.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B7G
Base pins
-
Nominal heater
-

Description

44 cm rectangular picture tube with 110° 2. Typical Operating Conditions (1) deflection angle, electrostatic focusing, aluminized screen and steel reinforcement

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
-
Nominal heater voltage
-
Nominal heater current
74 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 44

    -280 W

  • A 44

    -281 W

  • Published value

    44 cm

  • u@

    11 V

  • i ~ approx.

    74 mA

  • Ugagsa @ 13 ]

    13 kV

  • Ugz 200 350 ©® S

    50 V

  • Published value

    93954 a

  • Ugs @ ...350

    0 to 350 V

  • Usggsamax @ @

    14 kV

  • Ugsgsamin @ @

    10 kV

  • Published value

    9 k

  • 9 k (2)

    450 V

  • Ugz max

    350 V

  • Us2 min =

    200 V

  • L_’(k max

    100 V

  • Uk_p max i

    350 V

  • Electron Gun Tetrode with Einzel- - q

    5 MQ

  • Lens [)

    5 MQ

  • Heating Time @® =

    5 s

  • Heating Time @® = 5s (approx.) (2)

    110 V

  • Ad4

    -281 W

  • Ad4-281W (2)

    130 V

  • Base Special Miniature

    0.1 MQ

CircuitDesignRatings

  • Deflection Angles Diagonal 110° loz < *

    5 uA

  • Horizontal gy [ = A < T

    25 uA

  • Dlameter

    20 mm

Capacitance

  • Material Filter-Glass Cor_ approx.

    6 pF

  • {Light Transmission Bk approx.

    5 pF

  • Published value

    1500 pF

  • Screen Phosphor Cg3g

    5 a

  • Screen Phosphor Cg3g5a/m min 100 (2)

    0 pF

  • Published value

    550 pF

  • Colour Temperature 12

    0 °K

  • Minimum Useful 346 x

    270 mm

  • Dimensions Diagonal

    413 mm

  • Overall Length

    284 mm

  • We;ght

    5.6 kg

  • A 44

    -280 W

  • Ad4

    -281 W