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5CUP18

Five-inch television film-recording cathode-ray tube designed to expose motion-picture film from a television signal. Its high-voltage display system is optimized for photographic recording rather than direct viewing.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: 12D
Socket code: NEOEIGHTAR7
Base pins: 7
Nominal heater: 6.3 V / 600 mA

Description

5-inch television film-recording cathode-ray tube.

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: 12D
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

12D - 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: 30000 V
Max screen voltage: 350 V

5-inch television film-recording cathode-ray tube.

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 Continental Electronics

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

Focusing Method
Electrostatic
Deflecting Method
Magnetic
Deflection Angle
50 deg
Approximate
Screen
P18 Aluminized
White fluorescence; short persistence

Other

Anode 1 Voltage
- to 8000 V
Maximum
Grid 1 Negative Bias
- to 150 V
Maximum magnitude
Anode 2 Voltage Typical
27000 V
Anode 1 Focus Voltage Typical
4500 V
Grid 2 Voltage Typical
200 V
Grid 1 Visual Cutoff
-110 to -70 V