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T1272U

English Electric/Ferranti cathode-ray display tube documented for specialized technical visual service, with manufacturer-defined screen, electron-optical, focusing, deflection, and accelerating characteristics for type T1272U.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: IO
Base pins: -
Nominal heater: 6.3 V / 300 mA

Description

Television cathode-ray tube for AC/DC series-heater receivers with magnetic focus and magnetic deflection.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: IO
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: 10000 V

Published Ferranti ratings and characteristics promoted where applicable; additional operating and application data retained as parameters.

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

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Application

Application
Television picture display

Characteristics

Focusing method
Magnetic
Deflection method
Magnetic
Fluorescence
White

Construction

External conductive coating
Present