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Power - Beam (NOT sweep) ·BeamPower

6V6G

Beam-power output tube designed for radio-receiver and audio-amplifier service, providing conventional audio-frequency power amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7AC
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 450 mA

Description

Beam power output tube for audio-frequency power amplification.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7AC
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7AC - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Pin 1—NCVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN2Pin 2—H — HeaterVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN3Pin 3AP — Plate (Anode)Verified

12L6GT/25L6GT manufacturer basing, 7AC

PIN4Pin 4AG2 — Screen GridVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN5Pin 5AG1 — Control GridVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN7Pin 7—H — HeaterVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN8Pin 8ABP — Beam-Forming PlateGroup AC8Verified

12L6GT/25L6GT manufacturer basing, 7AC

PIN8Pin 8AK — CathodeGroup AC8Verified

12L6GT/25L6GT manufacturer basing, 7AC

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
52000 Ω
Transconductance
0.0041 S
Max plate voltage
315 V
Max screen voltage
285 V
Max plate dissipation
12 W
Max screen dissipation
2 W

Full electrical-table extraction.

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

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate voltage

    180 V

    ClassA

  • Screen voltage

    180 V

    ClassA

  • Grid bias

    -8.5 V

    ClassA

  • Plate current

    29 mA

    ClassA

  • Screen current

    3 mA

    ClassA

  • Load resistance

    5500 Ω

    ClassA

  • Power output

    2 W

    ClassA

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Grid bias

    -12.5 V

    ClassA

  • Plate current

    45 mA

    ClassA

  • Screen current

    4.5 mA

    ClassA

  • Load resistance

    5000 Ω

    ClassA

  • Power output

    4.25 W

    ClassA

  • Plate voltage

    300 V

    ClassAB;PushPull;TwoTubes

  • Screen voltage

    300 V

    ClassAB;PushPull;TwoTubes

  • Grid bias

    -20 V

    ClassAB;PushPull;TwoTubes

  • Load resistance plate-to-plate

    8000 Ω

    ClassAB;PushPull;TwoTubes

  • Power output

    13 W

    ClassAB;PushPull;TwoTubes

Characteristic

  • Plate resistance

    52000 Ω

    Section1

  • Transconductance

    4100 µS

    Section1

Data set 02

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    450 mA

Other

  • Power Output

    4.5 W

    ClassA

Data set 03

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Typical plate voltage

    250 V

    ClassA

Data set 04

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    450 mA

Other

  • Power Output

    4.5 W

    ClassA

  • Power Output

    14 W

    PushPull;ClassAB

Data set 05

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate Voltage

    250 V

    ClassA; OneTube

  • Screen Voltage

    250 V

    ClassA; OneTube

  • Plate Current

    45 mA

    ClassA; OneTube

  • Load Resistance

    5000 ohm

    ClassA; OneTube

  • Power Output

    4.5 W

    ClassA; OneTube