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Tuning Indicator ·TuningIndicator

1E4AV

High-reliability Russian electron-light indicator designed to display voltage level in semiconductor circuitry and compact electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
1.5 V / 95 mA

Description

High-reliability electron-light indicator for indicating voltage level in semiconductor circuits.

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
1.5 V
Nominal heater current
95 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

Tuning Indicator

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Values promoted where clearly identifiable from Russian source.

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

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Tuning Indicator

Characteristic

  • Plate current

    1.5 mA

    Published Russian-source value; OCR-normalized.

  • Service life

    2500 h

    Published Russian-source value; OCR-normalized.

  • Heater voltage

    1.5 V

    Nominal/published heater value.

  • Heater current

    95 mA

    Nominal/published heater value.