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Tube Tinker — Electron Tube Database
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Specialized - Cathode Ray ·CathodeRay

FW227

Multi-gun direct-view storage cathode-ray tube using multiple electron-gun functions to write, store, display, and erase persistent electronic information.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / -

Description

Multi-gun direct-view storage cathode-ray tube.

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
-
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

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

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Heater Voltage

    6.3 V

  • Write Cathode Voltage

    -1100 V

  • Write Grid 1 Voltage

    -150 V

  • Write Grid 2 Voltage

    150 V

  • Write Grid 3 Voltage

    500 V

Other

  • Maximum Viewing/High-Voltage Electrode Potential

    10000 V

  • Viewing Screen Voltage Maximum

    10000 V

  • Heater-Cathode Voltage Maximum

    125 V