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AW4791

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: -
Base pins: -
Nominal heater: 6.3 V / 300 mA

Description

The Mullard AW4791 is explicitly identified as an equivalent/co-designation of A4718W in the supplied source.

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: 6.3 V
Nominal heater current: 300 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-specific electrical, optical, deflection, focusing, capacitance, and mechanical data are retained in TUBE_SECTION_PARAMETER because the locked promoted fields primarily target conventional electrode sections.

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 Mullard

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Heater Voltage
6.3 V
Heater Current
300 mA
Focusing Method
Electrostatic text
Deflection Method
Magnetic text
Deflection Angle
110 deg
Light Transmission
75 percent
Approximate
Grid Cutoff Voltage Range
-40 to -77 V
AtFirstAnode=400V
Grid Cutoff Voltage Range
-50 to -93 V
AtFirstAnode=500V

Other

Final Anode Voltage
18000 V
Focus Electrode Voltage Minimum
0 V
Focus Electrode Voltage Maximum
400 V
First Anode Voltage
400 V
OperatingOption1
First Anode Voltage
500 V
OperatingOption2
Maximum Heater Surge Voltage
9.5 V
SeriesHeaterOperation

Data set 02

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
446 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 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
External conductive coating capacitance
1500 pF
Maximum

Other

Heater-cathode AC component maximum
20 V RMS