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Specialized - Cathode Ray ·CathodeRay

SC3168

Five-inch high-voltage special-purpose CRT with flat optical-glass faceplate and magnetic deflection. Sylvania specifies anode capability to approximately 20 kV for specialized high-resolution display applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DUODECAL5
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

Five-inch high-voltage special-purpose CRT with flat optical-glass faceplate and magnetic deflection.

Socket description

Small-shell Duodecal 5-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
DUODECAL5
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
Max plate voltage
20000 V

Special-purpose cathode-ray tube; published ratings and construction data captured.

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

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Magnetic

Application

  • Application

    Electrostatic charge printing

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater voltage

    6.3 V

  • Heater current

    600 mA

  • Focusing method

    Magnetic

  • Deflection method

    Magnetic

Other

  • Maximum principal anode/accelerator voltage

    25000 V

  • Anode voltage maximum

    25000 V

  • Grid2 voltage maximum

    2500 V

  • Typical anode voltage

    20000 V

  • Typical grid2 voltage

    2000 V

  • Grid1 circuit resistance maximum

    1.5 Mohm

Application

  • Application

    Five-inch high-voltage special-purpose CRT