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Specialized - Cathode Ray ·CathodeRay

5AHP7

Five-inch P7 cathode-ray display tube with electrostatic focusing and magnetic deflection, using an special-purpose screen for visual or instrument display.

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

Description

5-inch radar cathode-ray tube with electrostatic focus, magnetic deflection, and long-persistence P7 screen.

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
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
11000 V

Cathode-ray display/scanning system; published focusing, deflection and high-voltage data retained as parameters.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Application

  • Application

    Oscilloscope_Display text

Data set 02

1960 Du Mont

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    1 code

    Electrostatic

  • Deflection method

    1 code

    Magnetic

  • Minimum useful screen

    100 in

Other

  • Accelerator voltage maximum

    10000 V

  • Accelerator voltage

    7000 V

  • Grid No. 1 voltage

    -

    Published range -72 to -28 V

  • Grid No. 1 negative bias maximum

    200 V

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Magnetic

  • Heater voltage

    6.3 V

  • Heater current

    600 mA

  • Fluorescence

    Blue-white / yellow afterglow

  • Persistence

    Long

  • Line width maximum

    0.4 mm

Construction

  • Phosphor

    P7

  • Phosphor construction

    Non-aluminized P7

Application

  • Application

    Oscilloscope / instrument / special-purpose display

Other

  • Anode voltage maximum

    11000 V

  • Focus-electrode voltage range maximum

    -550 to +1100 V

  • Grid-2 voltage maximum

    770 V

  • Grid-1 negative-bias maximum

    -200 V

  • Grid-1 positive-bias maximum

    0 V

  • Peak heater-cathode voltage maximum

    200 V

  • Typical anode voltage

    7000 V

  • Typical focus voltage range

    0 to +250 V

  • Typical grid-2 voltage

    300 V

  • Grid cutoff range

    -33 to -77 V

  • Grid-1 circuit resistance maximum

    1.5 Mohm