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Specialized - Cathode Ray ·CathodeRay

7BP7B

Seven-inch magnetic-focus and magnetic-deflection CRT with a high-resolution gun and long-persistence screen, intended for radar and oscilloscope applications requiring a lingering, sharply defined trace.

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

Description

7-inch magnetic-focus and magnetic-deflection direct-view cathode-ray tube for oscilloscope and radar applications requiring long persistence, with a high-resolution gun.

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
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 . . . . . ... e e e i e e e et et et et

    6.3 V

    Published datasheet line; semantic text-layer recovery

  • Deflection Angle, approximale . . ... ... ... . it e e e

    53 deg

    Published datasheet line; semantic text-layer recovery

  • Minimum Useful Screen Diameter. . .. ... ... ... ... .. ittt

    6 in

    Published datasheet line; semantic text-layer recovery

  • Neck Length. . . .. o i i it e e e

    72 in

    Published datasheet line; semantic text-layer recovery

  • Anode Contact Aligns with Pin No. 5==

    10 deg

    Published datasheet line; semantic text-layer recovery

  • Anode VoltageS

    7000 V

    Published datasheet line; semantic text-layer recovery

  • Grid-No. 2 Voltage . . ... .. ... e

    250 V

    Published datasheet line; semantic text-layer recovery

  • Grid-No. 1 YoltageY . . .. ... ... . —~25t0 —

    70 V

    Published datasheet line; semantic text-layer recovery

  • Focusing-Coil Current A, approximate

    11 mA

    Published datasheet line; semantic text-layer recovery

  • than

    4000 V

    Published datasheet line; semantic text-layer recovery

  • 2. ANODE TERMINAL ALIGNS WITH PIN-NO. 5 *I

    0 deg

    Published datasheet line; semantic text-layer recovery