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Power - Triode ·Triode

4641

Power triode documented for amplifier or control service, with manufacturer operating data emphasizing useful power output rather than small-signal voltage amplification. Its available documentation does not justify a narrower specialized functional category.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
4 V / 2 A

Description

Directly heated output triode for Class-AB service.

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
2 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
3200 Ω
Transconductance
0.0032 S
Amplification factor
10.24
Max plate voltage
1500 V
Max plate dissipation
25 W
Max cathode current
60 mA

Directly heated Philips power triode with published Class-A, Class-AB, and Class-B operating conditions at 1000 V plate supply.

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

Triode

Other

  • Plate voltage

    1000 V

    ClassA; OneTube

  • Quiescent plate current

    25 mA

    ClassA; OneTube

  • Grid bias

    -80 V

    ClassA; OneTube

  • Load resistance

    25000 ohm

    ClassA; OneTube

  • Power output

    11.5 W

    ClassA; OneTube

  • Distortion

    5 %

    ClassA; OneTube

  • Grid AC voltage

    58 V RMS

    ClassA; OneTube

  • Maximum anode load

    25 W

  • Plate voltage

    1000 V

    ClassAB; PushPull; TwoTubes; FixedBias

  • Quiescent plate current per tube

    25 mA

    ClassAB; PushPull; TwoTubes; FixedBias

  • Plate current at full modulation per tube

    39 mA

    ClassAB; PushPull; TwoTubes; FixedBias

  • Grid bias

    -80 V

    ClassAB; PushPull; TwoTubes; FixedBias

  • Load resistance plate-to-plate

    35000 ohm

    ClassAB; PushPull; TwoTubes; FixedBias

  • Power output

    30 W

    ClassAB; PushPull; TwoTubes; FixedBias

  • Distortion

    0.67 %

    ClassAB; PushPull; TwoTubes; FixedBias

  • Grid AC voltage

    56 V RMS

    ClassAB; PushPull; TwoTubes; FixedBias

  • Plate voltage

    1000 V

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Quiescent plate current per tube

    25 mA

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Plate current at full modulation per tube

    28 mA

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Common cathode resistor

    1600 ohm

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Load resistance plate-to-plate

    35000 ohm

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Power output

    29 W

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Distortion

    4.5 %

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Grid AC voltage

    55 V RMS

    ClassAB; PushPull; TwoTubes; CathodeBias

  • Plate voltage

    1000 V

    ClassB; PushPull; TwoTubes

  • Quiescent plate current per tube

    5 mA

    ClassB; PushPull; TwoTubes

  • Plate current at full modulation per tube

    45 mA

    ClassB; PushPull; TwoTubes

  • Grid bias

    -90 V

    ClassB; PushPull; TwoTubes

  • Load resistance plate-to-plate

    18000 ohm

    ClassB; PushPull; TwoTubes

  • Power output

    41 W

    ClassB; PushPull; TwoTubes

  • Distortion

    4 %

    ClassB; PushPull; TwoTubes

  • Grid AC voltage

    60 V RMS

    ClassB; PushPull; TwoTubes

Characteristic

  • Transconductance

    3.2 mA/V

    ClassA; OneTube

  • Internal resistance

    3200 ohm

    ClassA; OneTube

Data set 02

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

  • Application

    Audio output

Data set 03

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum no-load plate voltage

    3000 V

  • Maximum plate voltage

    1500 V

  • Maximum plate dissipation

    25 W

  • Maximum cathode current

    60 mA