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5CHP11

Five-inch character-writing CRT using magnetic beam positioning with auxiliary electrostatic deflection for high-speed computer readout and electronic character formation. Its high-voltage display system supports rapid generation of alphanumeric information.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: NEOEIGHTAR7
Base pins: 7
Nominal heater: 6.3 V / 600 mA

Description

Character-writing CRT using magnetic beam positioning with an auxiliary electrostatic deflection system for high-speed computer read-out and electronic character formation.

Socket description

Small-button Neoeightar 7-contact CRT base family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: NEOEIGHTAR7
Base pins: 7
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: 27000 V
Max screen voltage: 700 V

Character-writing CRT with magnetic positioning and electrostatic auxiliary character deflection.

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

1945 Litton Industries

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

Screen Voltage Maximum
- to 27000 V
Screen/ultor
Grid 2 Voltage Maximum
- to 700 V
Grid 1 Negative Bias Maximum
- to 200 V
Magnitude
Screen Voltage Typical
27000 V
Grid 2 Voltage Typical
500 V
Grid 1 Visual Extinction Voltage
-110 V

Characteristic

Grid 1 Capacitance
8 pF
To all other electrodes
Cathode Capacitance
5 pF
To all other electrodes
Phosphor
P-11
Aluminized blue; fast decay
Deflection Angle
40 deg
Magnetic
Auxiliary Deflection Angle
10 deg
Electrostatic
Electrostatic Deflection Sensitivity
0.375 in/1000V
At 20 kV anode; approximate