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Tube Tinker — Electron Tube Database
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Specialized - Cathode Ray ·CathodeRay

8LO29I

Russian cathode-ray instrument tube for visual registration of electrical processes, with manufacturer-defined electron-optical focusing, deflection, and accelerating-voltage characteristics.

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

Description

Kathodenstrahlröhre | CRT

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
-
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
2200 V

English-primary bilingual extraction; published ratings promoted where clear.

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

  • Schirm ø | screen dia

    70

    Schirm ø | screen dia. 70mm

  • Anodenspannung | anode voltage

    1.5

    Anodenspannung | anode voltage 1,5kV

  • Heizspannung | filament voltage

    -10

    Heizspannung | filament voltage 6,3V 600mA±10%

  • Anodenspannung | anode voltage

    1500 V

    Anodenspannung | anode voltage 1500 V

  • Ablenkempfindlichkeit | deflection sensitivity X

    0.26 V

    Ablenkempfindlichkeit | deflection sensitivity X 0,14...0,26 mm/V

  • Fokusspannung | focussing voltage

    516 V

    Fokusspannung | focussing voltage 280...516 V

  • Spannung am

    2

    Spannung am 1. Gitter für 16cd/m^2

  • control grid voltage for

    -35

    control grid voltage for 16cd/m^2 −22,5...−67,5V Typ −35V

  • Fokusgröße bei

    0.55

    Fokusgröße bei 16cd/m^2 | spot size at 16cd/m^2 <0,55mm

  • Bezugsebene durch Mittelpunkt und Stift

    5

    Bezugsebene durch Mittelpunkt und Stift 5 | reference plane thru center and pin no. 5

  • Winkel X−Achse | angle between X and reference <±

    -10

    Winkel X−Achse | angle between X and reference <±10°

  • Winkel zwischen X und Y | angle between X and Y

    -3

    Winkel zwischen X und Y | angle between X and Y 90°±3°

  • Heizspannung | filament voltage

    6.9

    Heizspannung | filament voltage 5,7...6,9V

  • Anodenspannung | anode voltage

    2200

    Anodenspannung | anode voltage 1500...2200V

  • Fokusspannung | focussing voltage <

    1100

    Fokusspannung | focussing voltage <1100V

  • Published electrical value

    0

    G1−Spannung | grid no.1 voltage −125...0V

  • Spannung Heizung/Kathode | Voltage filament/cathode −

    0

    Spannung Heizung/Kathode | Voltage filament/cathode −125...0V

  • voltage between deflection plates and anode −

    550

    voltage between deflection plates and anode −550V...+550V