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Specialized - Cathode Ray ·CathodeRay

C9A

Brimar high-voltage television cathode-ray tube with magnetic focusing and magnetic deflection. The family uses an aluminized picture screen for direct-view domestic monochrome receiver service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
IO
Base pins
-
Nominal heater
2 V / 1.4 A

Description

High-voltage cathode-ray tube for domestic television with magnetic focus and 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
2 V
Nominal heater current
1.4 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

1 physical section, each with unique specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances
Max plate voltage
6000 V

Published Brimar ratings and characteristics promoted where applicable; additional 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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Magnetic

  • Deflection method

    Magnetic

Application

  • Application

    Domestic television picture tube

Other

  • Typical anode voltage

    5000 V

Data set 02

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Application

  • Application

    Television picture display

Characteristics

  • Focusing method

    Magnetic