7527

All-glass VHF power tetrode documented by Amperex. Its construction and published operating data support radio-frequency output service at very-high frequencies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 5
Nominal heater: 5 V / 14.1 A

Description

7527 is listed in the supplied Amperex material as a all-glass VHF power tetrode. 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: 5
Nominal heater voltage: 5 V
Nominal heater current: 14.1 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

1 physical section, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances

Max plate voltage: 4000 V
Max plate dissipation: 400 W
Max screen dissipation: 35 W

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

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

Tetrode

Other

Heater/Filament Voltage
5 V
Heater/Filament Current
14.1 A
Maximum Plate Voltage
4000 V
Maximum Plate Dissipation
400 W
Maximum Screen Dissipation
35 W

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

Heater/filament voltage
5 V
Published rating
Heater/filament current
14.1 A
Published rating
Amplification factor
6.1
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Other

Maximum plate dissipation
400 W
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Plate voltage
4000 V
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Plate current
270 mA
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Power output
800 W
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Grid bias
-170 V
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Grid current
9.5 mA
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Maximum frequency
500 MHz
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