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Specialized - Cathode Ray ·CathodeRay

5AMP1

Five-inch P1 electrostatic cathode-ray tube for oscillograph and precision-instrument display, with manufacturer-defined accelerating, focusing, and deflection characteristics.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DIHEPTAL12
Base pins
12
Nominal heater
6.3 V / 600 mA

Description

5-inch electrostatic-focus and electrostatic-deflection cathode-ray tube designed for high deflection sensitivity and oscillographic display.

Socket description

Medium-shell Diheptal 12-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
DIHEPTAL12
Base pins
12
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
6600 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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Heater Voltage 6.3 Volts

    6.3 V

    Heater Voltage 6.3 Volts

  • Anode No. 2 Voltage! 6600 Volts dc

    6600 V

    Anode No. 2 Voltage! 6600 Volts dc

  • Anode No. 1 Voltage (Focusmg Electrode) 1650 Volts dc

    1650 V

    Anode No. 1 Voltage (Focusmg Electrode) 1650 Volts dc

  • Grid No. 1 Voltage

    1 V

    Grid No. 1 Voltage

  • Any Deflection Plate 1320 Volts

    1320 V

    Any Deflection Plate 1320 Volts

  • Anode No. 2 Voltage . 2500 Volts dc

    2500 V

    Anode No. 2 Voltage . 2500 Volts dc

  • Anode No. 1 Voltage for Focus . 0to 300 Volts dc

    300 V

    Anode No. 1 Voltage for Focus . 0to 300 Volts dc

  • Grid No. 1 Voltage Required for Cutoff2 —34t0-56 Volts dc

    -56 V

    Grid No. 1 Voltage Required for Cutoff2 —34t0-56 Volts dc

  • 1. The product of the Anode No. 2 Voltage and Average Anode No. 2 Current should be limited to 6 wat

    6 W

    1. The product of the Anode No. 2 Voltage and Average Anode No. 2 Current should be limited to 6 watts.

Data set 03

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

    Electrostatic

  • Deflection factor D1-D2

    -

    Published range 40 to 50 V/in

  • Deflection factor D3-D4

    -

    Published range 20 to 25 V/in

  • Minimum useful screen

    41 in

Other

  • Accelerator voltage maximum

    6000 V

  • Accelerator voltage

    2500 V

  • Grid No. 1 voltage

    -

    Published range -56 to -34 V

  • Grid No. 1 negative bias maximum

    200 V

Capacitance

  • Cathode to all other electrodes

    2.7 pF

    Approximate or first published bound

  • Grid No. 1 to all other electrodes

    2.9 pF

    Approximate or first published bound

Data set 04

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Electrostatic

  • Heater voltage

    6.3 V

  • Heater current

    600 mA

  • Fluorescence

    Green

  • Persistence

    Medium

  • Deflection-factor uniformity maximum

    1 %

  • Line width maximum

    0.032 in

  • Useful scan minimum

    4 x 2.5 in

Construction

  • Phosphor

    P1

Application

  • Application

    Oscilloscope / instrument / special-purpose display

Other

  • Anode-2 voltage maximum

    6600 V

  • Anode-1 focus voltage maximum

    1650 V

  • Typical anode-2 voltage

    2500 V

  • Typical focus voltage range

    0 to 300 V

  • Grid-1 circuit resistance maximum

    1.5 Mohm

  • Deflection-circuit resistance maximum

    1 Mohm

  • Anode-2 input maximum

    6 W