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Specialized - Cathode Ray ·CathodeRay

16BUP4

Sixteen-inch P4 direct-view picture tube with an anode operating range of roughly 10–16 kV and typical operation near 13 kV. RMA/EIA data also provide an adjustable focusing-electrode range for picture optimization.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B8H
Base pins
-
Nominal heater
6.3 V / 450 mA

Description

The 16BUP4 is a direct-view cathode-ray television picture tube. The supplied sheet specifies its focus/deflection system, high-voltage anode operation, heater requirements, electrode ratings, and picture-tube mechanical/optical characteristics.

Socket description

Neoeightar 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B8H
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
450 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
16000 V

CRT anode/ultor voltage is represented in MaxPlateVoltage; additional electrode, drive, optical, and capacitance 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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Minimum anode voltage

    10000 V

  • Maximum anode voltage

    16000 V

  • Minimum anode voltage

    10000 V

  • Typical anode voltage

    13000 V

  • Maximum grid No. 2 voltage

    200 V

  • Minimum grid No. 2 voltage

    175 V

  • Typical grid No. 2 voltage

    100 V

  • Maximum heater voltage

    6.9 V

  • Minimum heater voltage

    3.7 V

  • Grid No. 4 focusing voltage range

    500 to 1000 V

Characteristics

  • Heater warm-up time

    11 s

Capacitance

  • Grid No. 1 to other electrodes capacitance

    6 pF

  • Cathode to other electrodes capacitance

    5 pF