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Voltage Pentode or Tetrode (with diode) ·Diode-Tetrode

B2044

Philips binode combining a signal diode with an amplifying tetrode for receiver detection and signal amplification, integrating two radio signal-processing functions in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
20 V / 180 mA

Description

B2044 is listed in the supplied tube table as a binode (diode-tetrode). Published electrical 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
20 V
Nominal heater current
180 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

2 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published table ratings and electrical characteristics reviewed; ambiguous cells were not inferred.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0012 S
Max plate voltage
200 V
Max screen voltage
200 V
Max screen dissipation
0.25 W

Published table ratings and electrical characteristics reviewed; ambiguous cells were not inferred.

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 2

Tetrode

Other

  • Maximum plate voltage

    200 V

    Published table rating

  • Plate voltage

    200 V

    Published operating point

Characteristic

  • Transconductance

    1200 µS

    Published table characteristic

  • Heater/filament voltage

    20 V

    Published heater/filament rating

  • Heater/filament current

    180 mA

    Published heater/filament rating

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 2

Tetrode

Other

  • Normal plate current

    0.76 mA

    PentodeSection

  • Average screen-grid current

    0.5 mA

    PentodeSection