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Specialized - Cathode Ray ·CathodeRay

4AP10

Four-inch skiatron cathode-ray tube with magnetic focusing and deflection for projected dark-trace display systems. Unlike ordinary fluorescent CRTs, it forms a dark trace for optical projection onto a larger viewing surface.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

Four-inch skiatrons cathode-ray tube with magnetic focus and deflection for projected dark-trace display systems.

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
600 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
9900 V

Published maximum ratings and electrical characteristics promoted from the approved source.

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

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    600 mA

    Nominal

  • Maximum Plate Voltage

    9900 V

  • AcceleratingGridVoltageMaximum

    500 V

    Grid No.2

  • HeaterCathodeVoltageMaximum

    125 V

  • Typical Anode Voltage

    9000 V