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Specialized - Switching Tube ·BeamSwitchingCommutator

6AR8

Double-plate sheet-beam switching and detector tube that steers an electron beam between output plates for electronic commutation and signal detection.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
9OP
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

6AR8 is described in the supplied Tung-Sol datasheet as a double-plate sheet-beam switching/detector tube. Published maximum ratings and core section characteristics were extracted into the technical tables.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9OP
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9OP - 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

BeamSwitchingCommutator

X-ray radiationInterelectrode capacitances
Transconductance
0.004 S
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
2 W
Max cathode current
30 mA

Promoted from published ratings/characteristics; identical repeated sections compressed where applicable.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

BeamSwitchingCommutator

Other

  • Plate voltage

    250 V

    ColorTV SynchronousDetector

  • Screen voltage

    250 V

    ColorTV SynchronousDetector

  • Plate current

    10 mA

    ColorTV SynchronousDetector

  • Screen current

    0.4 mA

    ColorTV SynchronousDetector

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

BeamSwitchingCommutator

Other

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Accelerator voltage

    200 V

Characteristic

  • Deflecting switching voltage

    20 V

Capacitance

  • Plate 1 to plate 2

    0.4 pF

Data set 03

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

BeamSwitchingCommutator

Characteristic

  • Heater voltage

    6.3 V

    Published table

  • Heater current

    300 mA

    Published table

  • Grid-1 transconductance

    11000 µS

    DeflectorsGrounded

  • Deflector switching voltage maximum

    20 V

    Switching

Other

  • Plate 1 maximum voltage

    300 V

    SheetBeam

  • Plate 2 maximum voltage

    300 V

    SheetBeam

  • Accelerator maximum voltage

    300 V

    SheetBeam

  • Maximum deflector voltage

    150 V

    EachPolarity

  • Maximum cathode current

    30 mA

    SheetBeam

  • Plate 1 voltage

    250 V

    DeflectorsGrounded

  • Plate 2/accelerator voltage

    290 V

    DeflectorsGrounded

  • Total plate current

    10 mA

    DeflectorsGrounded

Data set 04

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

BeamSwitchingCommutator

Other

  • Plate Number 2 Maximum Voltage

    300 V

    SheetBeam

  • Plate Number 2 Maximum Dissipation

    2 W

    SheetBeam