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Specialized - Cathode Ray ·CathodeRay

CRM91

Mazda CRM-series cathode-ray tube documented for television or oscillographic display service. The available source does not justify selecting one exclusive application, so it remains a general display CRT.

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

Description

CRM91 cathode-ray tube for television or oscillographic display service.

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

CRT electrical section; anode-2/accelerating voltage promoted where clearly 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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Typical anode voltage

    5000 V