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Specialized - Cathode Ray ·CathodeRay

SC3195

High-resolution instrument CRT with electrostatic focusing and deflection, monoaccelerator construction, and neck-mounted deflection contacts. Designed for precise direct-view electronic display and oscillographic service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DIHEPTAL12
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

High-resolution electrostatic-focus/electrostatic-deflection CRT with monoaccelerator construction and neck-brought deflection contacts.

Socket description

Medium-shell Diheptal 12-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
DIHEPTAL12
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
11000 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

    Electrostatic

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

    Electrostatic

  • Deflection method

    Electrostatic

Other

  • Maximum principal anode/accelerator voltage

    11000 V

  • Anode A2 voltage maximum

    11000 V

  • Anode A1 voltage maximum

    6000 V

  • Heater-cathode voltage maximum heater negative

    200 V

  • Typical A2 voltage

    10000 V

Application

  • Application

    High-resolution electrostatic-focus/electrostatic-deflection CRT

  • Dynamic focusing

    Recommended

Construction

  • Construction

    Monoaccelerator