7539

Graphechon scan-conversion storage tube for data-processing systems. It stores signal information and converts it from one scanning time base or presentation format to another.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 3
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 2.2 A

Description

Graphechon scan-conversion storage tube for data-processing systems that transform stored signal information from one scanning time base or presentation to another.

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: 2.2 A
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

3 physical sections, each with unique specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published ratings and characteristics promoted where clearly applicable; additional published values retained as parameters.

Section 2

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published ratings and characteristics promoted where clearly applicable; additional published values retained as parameters.

Section 3

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published ratings and characteristics promoted where clearly applicable; additional published values 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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Heater or filament voltage
6.3 V
Published nominal value
Heater or filament current
2.2 A
Published nominal/aggregate value
Writing-gun heater current
600 mA
Published
Reading-gun heater current
1.6 A
Published

Other

Application
Scan conversion / data-processing storage
Published

SECTION 2

Cathode Ray

Characteristics

Heater or filament voltage
6.3 V
Published nominal value
Heater or filament current
2.2 A
Published nominal/aggregate value

SECTION 3

Cathode Ray

Characteristics

Heater or filament voltage
6.3 V
Published nominal value
Heater or filament current
2.2 A
Published nominal/aggregate value