Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

SC3892P1

Five-gun special-purpose instrument CRT with electrostatic focusing and deflection and a P1 green screen. Multiple guns permit simultaneous independent electronic traces or display elements.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 3 A

Description

Sylvania SC3892P1 special-purpose CRT with electrostatic focus and electrostatic deflection; P1, five-gun design. Published high-voltage ratings, focus/deflection data, capacitances, circuit limits, and typical operating conditions were extracted from the supplied datasheet.

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
3 A
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
5500 V

Ratings and characteristics promoted from the supplied Sylvania source where explicitly published.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • HeaterOrFilamentVoltage

    6.3 V

  • HeaterOrFilamentCurrent

    3 A

  • GunCount

    5

  • MinimumUsefulScreenDiameter

    15 in

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    3 A

  • FocusingMethod

    Electrostatic

  • DeflectionMethod

    Electrostatic

  • PhosphorOrScreen

    P1, five-gun design

  • UsefulScreenOrScan

    15 inch

  • GunCount

    5

  • DeflectionFactorUniformityMaximum

    1.5 %

  • InteractionFactorMaximum

    0.00006 in/V

  • UsefulScanD1D2

    7.5 in

  • UsefulScanD3D4

    7.375 in

  • InterelectrodeCapacitancesStatus

    To Be Determined

    EachGun

Other

  • AnodeVoltageMaximum

    5500 V

  • Grid1NegativeBiasMagnitudeMaximum

    220 V

  • Grid1PositiveBiasMaximum

    0 V

  • Grid1PositivePeakVoltageMaximum

    2 V

  • Grid1CircuitResistanceMaximum

    1.5 Mohm

  • HeaterCathodeVoltageMaximum

    200 V

    AfterWarmup

  • PeakVoltageAnodeToDeflectionPlate

    550 V

  • Anode2VoltageMaximum

    5500 V

  • AstigmatismElectrodeVoltageMaximum

    5500 V

  • FocusElectrodeVoltageMaximum

    3000 V

  • PeakVoltageAnodeToDeflectionPlate

    1500 V

  • Anode Voltage

    3000 V

  • FocusElectrodeVoltage

    850 to 1500 V

  • Grid1VoltageForCutoff

    -50 to -100 V

  • DeflectionFactorD1D2

    80 V/in

  • DeflectionFactorD3D4

    80 V/in

  • AstigmatismElectrodeVoltage

    2900 to 3100 V

  • LineWidth

    0.035 in