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Specialized - Cathode Ray ·CathodeRay

11LO101I

Russian cathode-ray display tube with a multi-electrode electron gun and high-voltage final acceleration around 12 kV. Published limits cover several anodes, grid, heater leakage, and screen currents, indicating a specialized controlled-beam display device.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 300 mA

Description

11LO101I oscillographic cathode-ray tube for visual registration of high-frequency oscillations, with electrostatic focusing and deflection and a green screen.

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
300 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.

Oscillographic cathode-ray tube; values manually transcribed from the source page image.

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

195X Russian

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater voltage

    6.3 V

    Nominal

  • Heater current

    0.27-0.33 A

    Published range

  • Fourth-anode voltage

    12 kV

    Nominal operating condition

  • First-anode current

    <0.5 µA

    Published

  • Second-anode current

    <300 µA

    Published

  • Third-anode current

    <50 µA

    Published

  • Fourth-anode current without dark current

    >5 µA

    Published

  • Fourth-anode dark current

    5-50 µA

    Published

  • Grid current

    <10 µA

    Published

  • Screening-plate current

    <5 µA

    Published

  • Cathode-heater leakage current

    <30 µA

    Published

  • Cathode-modulator leakage current

    <3 µA

    Published

  • First-anode voltage

    250-350 V

    Published

  • Second-anode voltage

    -50 to +50 V

    Published

  • Third-anode voltage

    ±50 V

    Published

  • Grid voltage

    -50 V

    Published

  • Screening-grid voltage

    ±50 V

    Published

  • Cutoff modulator voltage

    -40 to -90 V

    Published

  • Cathode voltage

    -2000 V

    Published

  • Modulation voltage

    <25 V

    Published

  • Time-base plate deflection sensitivity

    >0.65 mm/V

    Published

  • Signal-plate deflection sensitivity

    >1.9 mm/V

    Published

  • Sensitivity nonlinearity

    <3 %

    Published

  • Wave impedance

    330-360 Ω

    Published

  • Warm-up time

    <2 min

    Published

  • Modulator-to-all-electrodes capacitance

    <11 pF

    Published

  • Cathode-to-all-electrodes capacitance

    <5 pF

    Published

  • Time-base-plate capacitance

    <2.5 pF

    Published

  • Signal-plate capacitance

    <3 pF

    Published

  • Service life

    >1000 h

    Published

Other

  • Maximum heater voltage

    6.93 V

    Minimum 5.67 V

  • Maximum fourth-anode voltage

    13 kV

    Minimum 5 kV

  • Maximum modulator voltage

    -5 V

    Minimum -200 V

  • Maximum cathode voltage

    -1.8 kV

    Minimum -2.2 kV

  • Maximum heater-to-cathode voltage

    0 V

    Minimum -150 V

  • Maximum mean time-base plate potential

    25 kV

    Minimum 0 kV