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Power - Beam (NOT sweep) ·BeamPower

3E5

Directly heated beam-power amplifier with series/parallel filament operation, intended for low-voltage battery receiver power-output service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
6BX
Socket code
B7G
Base pins
7
Nominal heater
2.8 V / 50 mA

Description

Directly heated beam-power amplifier with series/parallel filament operation.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
6BX
Socket code
B7G
Base pins
7
Nominal heater voltage
2.8 V
Nominal heater current
50 mA
Parallel heater voltage
1.4 V
Parallel heater current
50 mA
Series capable
Yes

6BX - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1F—F — Filament

Source code F; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

PIN2PAP — Plate (Anode)

Source code P; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

PIN3G2AG2 — Screen Grid

Source code G2; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

PIN4IC—IC

Source code IC; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

PIN5G3AG3 — Suppressor GridGroup 6BX5

Source code G3; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

PIN5FCT—FCT — Filament Center TapGroup 6BX5

Source code FCT; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

PIN6G1AG1 — Control Grid

Source code G1; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

PIN7F—F — Filament

Source code F; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 6BX

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
100000 Ω
Transconductance
0.00155 S
Max plate voltage
135 V
Max screen voltage
90 V

Directly heated beam-power amplifier with series/parallel filament operation.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Filament voltage series

    2.8 V

    Series

  • Filament current series

    25 mA

    Series

  • Filament voltage parallel

    1.4 V

    Parallel

  • Filament current parallel

    50 mA

    Parallel

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate voltage

    90 V

    ClassA;ParallelFilaments

  • Screen-grid voltage

    90 V

    ClassA;ParallelFilaments

  • Grid No.1 bias

    7 V

    ClassA;ParallelFilaments

  • Plate current

    8 mA

    ClassA;ParallelFilaments

  • Screen-grid current

    1.6 mA

    ClassA;ParallelFilaments

  • Plate resistance

    100000 ohm

    ClassA;ParallelFilaments

  • Transconductance

    1550 uS

    ClassA;ParallelFilaments

  • Load resistance

    8000 ohm

    ClassA;ParallelFilaments

  • Power output

    0.25 W

    ClassA;ParallelFilaments

  • Plate voltage

    67.5 V

    ClassA;ParallelFilamentsLowVoltage

  • Screen-grid voltage

    67.5 V

    ClassA;ParallelFilamentsLowVoltage

  • Grid No.1 bias

    5 V

    ClassA;ParallelFilamentsLowVoltage

  • Plate current

    5.5 mA

    ClassA;ParallelFilamentsLowVoltage

  • Screen-grid current

    1.1 mA

    ClassA;ParallelFilamentsLowVoltage

  • Plate resistance

    120000 ohm

    ClassA;ParallelFilamentsLowVoltage

  • Transconductance

    1400 uS

    ClassA;ParallelFilamentsLowVoltage

  • Load resistance

    8000 ohm

    ClassA;ParallelFilamentsLowVoltage

  • Power output

    0.125 W

    ClassA;ParallelFilamentsLowVoltage

  • Plate voltage

    90 V

    ClassA;SeriesFilaments

  • Screen-grid voltage

    90 V

    ClassA;SeriesFilaments

  • Grid No.1 bias

    7 V

    ClassA;SeriesFilaments

  • Plate current

    6.8 mA

    ClassA;SeriesFilaments

  • Screen-grid current

    1.4 mA

    ClassA;SeriesFilaments

  • Plate resistance

    120000 ohm

    ClassA;SeriesFilaments

  • Transconductance

    1450 uS

    ClassA;SeriesFilaments

  • Load resistance

    9000 ohm

    ClassA;SeriesFilaments

  • Power output

    0.225 W

    ClassA;SeriesFilaments

  • Plate voltage

    67.5 V

    ClassA;SeriesFilamentsLowVoltage

  • Screen-grid voltage

    67.5 V

    ClassA;SeriesFilamentsLowVoltage

  • Grid No.1 bias

    5 V

    ClassA;SeriesFilamentsLowVoltage

  • Plate current

    4.4 mA

    ClassA;SeriesFilamentsLowVoltage

  • Screen-grid current

    0.9 mA

    ClassA;SeriesFilamentsLowVoltage

  • Plate resistance

    130000 ohm

    ClassA;SeriesFilamentsLowVoltage

  • Transconductance

    1300 uS

    ClassA;SeriesFilamentsLowVoltage

  • Load resistance

    11000 ohm

    ClassA;SeriesFilamentsLowVoltage

  • Power output

    0.115 W

    ClassA;SeriesFilamentsLowVoltage

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • MAX IMUM PLATE VOLTAGE 110

    110 VOLTS

    Published datasheet value

  • PLATE VOLTAGE 67.5 90 67.5

    90 VOLTS

    Published datasheet value

  • LOAD RESISTANCE 7 000 8 000 7 000 8

    0 OHMS

    Published datasheet value

  • 1 POWER OUTPUT 100 200 90

    175 MW

    Published datasheet value