A2134

Marconi audio output pentode also characterized for triode-connected power-amplifier operation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 600 mA

Description

The A2134 is an output pentode that may also be operated in triode connection, intended for audio-frequency output and related power-amplifier service.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: 9
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

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 23200 Ω
Transconductance: 0.0095 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 9 W
Max screen dissipation: 3 W

Published maximum ratings and characteristics audited; remaining useful numerical data retained in TUBE_SECTION_PARAMETER.

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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

rcont OUTPUT PENTODE A2
134
rcont OUTPUT PENTODE A2134
Published value [1]
9
9, full input 45 100 100 75 50 %
Published value [2]
45
9, full input 45 100 100 75 50 %
Published value [3]
100
9, full input 45 100 100 75 50 %
Published value [4]
100
9, full input 45 100 100 75 50 %
Published value [5]
75
9, full input 45 100 100 75 50 %
Published value [6]
50
9, full input 45 100 100 75 50 %
Published value
75 W
75% INPUT POWER
= [1]
50 W
= 50% INPUT POWER ' t ",4
= [2]
4 W
= 50% INPUT POWER ' t ",4