EM9

Dual triode documented in Russian reference literature; available filename-matched source establishes the device identity but does not clearly support a narrower specialized functional role.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: LOCTAL8
Base pins: -
Nominal heater: -

Description

Dual triode vacuum tube described in the Russian reference source. Technical description is translated to English from the complete filename-matched entry.

Socket description

Loctal 8-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: LOCTAL8
Base pins: -
Nominal heater voltage: -
Nominal heater current: 90 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

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Filename-matched Russian entry only.

Section 2

Triode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Second physical triode section; source extraction is OCR-corrupted, so unsupported electrical values are intentionally not promoted.

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

Triode

Characteristics

Heater current
10 mA
Translated from Russian source; Ток накала . . . . . . . . .. (90:!:10) мА
Plate current
1607 mA
Translated from Russian source; Ток анода . .. , . . . . к, 1607
Transconductance
-40 mA/V
Translated from Russian source; Крутизна характеристики в ее (110=-40) мА/В
Capacitance
1 pF
Translated from Russian source; Емкость входная . . . . . . ,. .. ,. 1 пФ
Transconductance
2 mA/V
Translated from Russian source; изменение крутизны характеристики ‚ к в ‚ <2Е40%

Other

Service life
500 h
Translated from Russian source; Наработка . . . . . . . . .. ,. , > 500 ч
Heater voltage
6.6 V
Translated from Russian source; Напряжение накала . . . . . . . . . . . . . , (6—6,6) В