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7534

High-current twin triode intended for demanding amplifier and control service, combining relatively low plate resistance with substantial current and dissipation capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: 8
Nominal heater: 6.3 V / 1.7 A

Description

7534 is listed in the supplied Amperex material as a high-current twin triode. Published electrical ratings and operating data were captured from the supplied table.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 1.7 A
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

Plate resistance: 2725 Ω
Transconductance: 0.0065 S
Amplification factor: 17
Max plate voltage: 300 V
Max screen voltage: 250 V
Max plate dissipation: 27.9 W
Max screen dissipation: 5 W
Max grid dissipation: 0.1 W
Max cathode current: 300 mA

Published maximum ratings and general characteristics promoted from the supplied datasheet.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 2725 Ω
Transconductance: 0.0065 S
Amplification factor: 17
Max plate voltage: 300 V
Max plate dissipation: 27.9 W
Max grid dissipation: 0.1 W
Max cathode current: 300 mA

Second physical triode section; electrically identical twin section.

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

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater/Filament Voltage
6.3 V
Heater/Filament Current
1.7 A
Maximum Plate Voltage
900 V
Maximum Plate Dissipation
27.9 W
Maximum Screen Voltage
250 V
Maximum Screen Dissipation
5 W

Characteristics

Plate Resistance
10000 ohm
Transconductance
25000 uS
Amplification Factor
6.5

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater/filament voltage
6.3 V
Published rating
Heater/filament current
1.7 A
Published rating
Amplification factor
17
Published table
Plate resistance
2725 ohm
Published table
Transconductance
6500 µS
Published table

Other

Plate current
35 mA
Published table
Maximum plate voltage
300 V
Published table