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AW5991

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

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: EIGHTAR7
Base pins: -
Nominal heater: 6.3 V / 360 mA

Description

Large rectangular 110-degree television picture tube with electrostatic focusing, magnetic deflection, grey glass, and metal-backed screen.

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

Max plate voltage: 18000 V

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

1963 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Construction

Screen color
White
TelevisionCRT
Focusing
Electrostatic
TelevisionCRT
Deflection
Double magnetic
TelevisionCRT

Other

Screen useful dimension
566 mm
TelevisionCRT
Final accelerator voltage
18 kV
TelevisionCRT
Grid No.2 voltage
500 V
TelevisionCRT
Heater voltage
6.3 V
TelevisionCRT
Heater current
300 mA
TelevisionCRT

Data set 02

1976 ITT Picture Tubes

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

U@
6.3 V
i 03L
6 %
Ug3gsa
18 kV
Uga 400
500 V
Ut @ 0...400
0 to 400 V
94 39 ¢ (U1} cutorf@®40... 77
50 to 93 V
U
9395 a
Us3a55 min @
13 kV
Published value
9 k
9 k R33a58 min (2)
16 kohm
5 Ua4 max
1000 V
f f ("Usii) max
500 V
g4 min
470 ohm
1. Generalities Us2 max
550 V
Electron Gun Tetrode with Einzel- Qﬂ? min
350 V
Base German Standard Ug1 o max
2 V
DIN 44431 (=Ug1) max
150 V
Deflection Method Magnetic Z31 max
0.5 MQ
Horizontal 99° Pimmax
10 mW
m» Vertical ~ 82° U_ilkmax1 @ &
410 V
Neck Diameter
286 mm
Neck Diameter _286mm = U-f.-"l( max 2 @ @ (2)
200 V
Face Shape Spherical U_ flk p max
300 V
Material Filter-Glass u + flk max
125 V
{Light Transmission U-&-ﬂ’knmax
180 V
Published value
75 %

CircuitDesignRatings

Colour Temperature 12
0 °
Minimum Useful 489 x
385 mm
Dimensions Diagana! §
66 mm
Overall Length 358 £
8 mm

Capacitance

Weight
12 kg
€gl approx.
6 pF
Ok approx.
5 pF
Cg3gfa/m min
1700 pF
Cgdgialm max
2500 pF

Data set 03

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Capacitance

Grid No.1 capacitance
6 pF
Cathode capacitance
4 pF

Other

Final accelerator operating voltage
18000 V
Final accelerator minimum voltage
13000 V
Final accelerator maximum voltage
18000 V
Maximum grid No.4 voltage
1000 V
Maximum negative grid No.4 voltage
500 V
Maximum negative grid No.1 voltage
150 V
Heater-cathode AC component maximum
20 V RMS