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Specialized - Cathode Ray ·CathodeRay

7AHP1

Seven-inch P1 cathode-ray instrument tube for oscillographic or measurement display, with manufacturer-specified focusing, deflection, accelerating-voltage, and phosphor characteristics.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 300 mA

Description

The Mullard 7AHP1 is a rectangular electrostatic CRT for radar or oscilloscope applications

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
300 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

No fixed ratings are recorded for this section.

Cathode-ray electron-gun/display section.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    300 mA

  • Focusing Method

    Electrostatic text

  • Deflection Method

    Double electrostatic text

  • Fluorescence

    Green text

  • Persistence

    P1 medium text

  • Grid 1 Cutoff Range

    -25 to -70 V

  • X Deflection Sensitivity

    0.19 mm/V

  • Y Deflection Sensitivity

    0.21 mm/V

  • Grid 1 Capacitance Maximum

    10 pF

Other

  • Anode 3 Voltage

    5000 V

  • Anode 2 Voltage Minimum

    600 V

  • Anode 2 Voltage Maximum

    700 V

  • Anode 1 Voltage

    1800 V