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Specialized - Cathode Ray ·CathodeRay

7AKP25

Seven-inch P25 cathode-ray display tube using a long-persistence orange screen for specialized visual display, with manufacturer-defined beam focusing and deflection characteristics.

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

Description

7-inch rectangular dual-gun cathode-ray tube with electrostatic focus and deflection, post acceleration, and a burn-resistant long-persistence phosphor for radar and oscillographic 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 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

No fixed ratings are recorded for this section.

Promoted fields mapped by printed headings; additional data retained in 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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Heater Voltage o v v v 6 o v 4 & ¢« o o a s ¢« v o o« o v « + o o «

    6.3 V

    Published datasheet line; semantic text-layer recovery

  • Over-all Iength o « ¢ o ¢ o« ¢ o ¢ ¢ o o ¢ & & . 17-7/8 + 3/

    8 in

    Published datasheet line; semantic text-layer recovery

  • Diagonal o o ¢« & o o o &+ o ¢ o ¢ 0 ¢ 0 o W . 6-5/8 + 1/

    16 in

    Published datasheet line; semantic text-layer recovery

  • Width & ¢ ¢ ¢ ¢ & ¢ o ¢ oo o o o o« o s .6-1/32 ¥ 1/

    16 in

    Published datasheet line; semantic text-layer recovery

  • Hedght o & v 6 ¢ v ¢ v ¢ o v ¢ s o 0 o « & . 4-1/32 ¥ 1/

    16 in

    Published datasheet line; semantic text-layer recovery

  • Post-Accelerator Contact Aligns with Trace of D1-D2 +

    10 deg

    Published datasheet line; semantic text-layer recovery

  • D1-D2 Trace Aligns with Pin No. 1 and Tube Axis +

    10 deg

    Published datasheet line; semantic text-layer recovery

  • Angle between D3-Di and D1-D2 Traces. . . . . » *» e

    1 deg

    Published datasheet line; semantic text-layer recovery

  • D1-D2 Trace Aligns with Bulb Wall . . . + + . *

    3 deg

    Published datasheet line; semantic text-layer recovery

  • Post-Accelerator Voltage + o« o o s o & 4 = o o o o « o & o {

    300 V

    Published datasheet line; semantic text-layer recovery

  • Focusing-Electrode Voltage o o o » « ¢« &+ o « « «» . »1150 to

    1500 V

    Published datasheet line; semantic text-layer recovery

  • Grid No. 1 Voltaged* . . . « v = ¢ = v.e o « » » « «» =50 to =

    120 V

    Published datasheet line; semantic text-layer recovery

  • Dl and D2 . ¢ o o = o o o a o s » « = + + o « « o 2180°t0

    225 V

    Published datasheet line; semantic text-layer recovery

  • D3and Dh v o o o o 2 o s 2=6 o o o s s » o a0 » <140 to

    170 V

    Published datasheet line; semantic text-layer recovery