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

Specialized - Cathode Ray ·CathodeRay

LO729

Electrostatic cathode-ray tube documented by a Russian manufacturer source. The available documentation confirms CRT construction but does not establish a narrower functional application.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
0
Nominal heater
6.3 V / 600 mA

Description

The LO729 is a electrostatic cathode-ray tube.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
0
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

No fixed ratings are recorded for this section.

Full electrical-data audit completed for this tube.

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

    AC or DC

  • Heater current

    540 mA to 660 mA

    Published tolerance

  • Cathode-heater voltage

    -125 V

    Published value

  • Accelerating voltage

    1000 V

    Published value

  • Second accelerating voltage

    1100 V

    Published value

Other

  • Deflection plate voltage

    -550 to 550 V

    Published range