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Voltage - Triode (single) ·Triode

LP2

Directly heated OSRAM triode for amplification, detection, or low-power output service in battery-operated equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B4
Base pins
-
Nominal heater
2 V / 200 mA

Description

OSRAM LP2 triode for amplification, detection, or power-output service as specified in the supplied datasheet.

Socket description

European 4-pin base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B4
Base pins
-
Nominal heater voltage
2 V
Nominal heater current
200 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
3900 Ω
Transconductance
0.00385 S
Amplification factor
15
Max plate voltage
150 V

Promoted values mapped from printed rating/approximate-data tables; additional operating points and capacitances retained as parameters.

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

192X Marconi Valve

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Published operating data

    See source

    Operating curves/table are present on the approved one-page source; values not promoted unless unambiguous in searchable text.

Data set 02

193X Osram

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Filament/heater voltage

    2 V

  • Filament/heater current

    200 mA

  • Amplification factor

    2

  • Plate impedance

    3900 ohm

  • Mutual conductance

    3850 uS

Other

  • Maximum anode voltage

    150 V

  • Optimum load

    9700 ohm

  • Anode current at 150 V

    7 mA

Data set 03

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Amplification Factor

    15

  • Plate Resistance

    3900 ohm

  • Typical Anode Voltage

    150 V

  • Typical Grid Bias

    -4.5 V

  • Typical Anode Current

    11.5 mA