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Voltage Tetrode ·Tetrode

E455

Philips variable-mu tetrode for controlled-gain receiver amplification. Its gradual cutoff characteristic supports automatic gain-control service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
4 V / 1 A

Description

E455 is listed in the supplied valve table as a variable-mu tetrode. Published operating and characteristic values were transcribed from its target row.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
4 V
Nominal heater current
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
Plate resistance
350000 Ω
Transconductance
0.0007 S
Amplification factor
700
Max plate voltage
200 V
Max screen voltage
100 V

Published target-row operating and characteristic values reviewed.

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

1938 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Plate voltage

    200 V

    Published European table row

  • Screen voltage

    100 V

    Published European table row

  • Plate current

    3 mA

    Published European table row

  • Control-grid bias

    15 V

    Published European table row

Characteristic

  • Plate resistance

    350000 ohm

    Published European table row

  • Transconductance

    700 µS

    Published European table row

  • Heater/filament voltage

    4 V

    Published European table row

  • Heater/filament current

    1 A

    Published European table row

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Heater voltage

    4 V

    Published datasheet value

Characteristics

  • Screen-grid voltage

    150 V

    Published datasheet value

  • Amplification factor

    700

    Published datasheet value