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Power - TV Horizontal Output (sweep) ·Pentode-Triode

6LX8

Triode-pentode combination designed for television horizontal oscillator and frequency-control service, performing line time-base timing rather than high-power sweep output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9DC
Socket code
B9A
Base pins
9
Nominal heater
6 V / 450 mA

Description

Miniature type used as horizontal-oscillator and fre- quency-control tube in color and black-and-white tele- vision receivers. Outlines section, 6B; requires minia- ture 9-contact socket. Types 5JW8, 6LX8/LCF802 and 9JW8/PCF802 are identical with type 6JW8/ECF802 9AE except for heater ratings. 6JW8/ 6LX8/ 9JW8/ 5JW8 ECF802 LCF802 PCF802

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
9DC
Socket code
B9A
Base pins
9
Nominal heater voltage
6 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9DC - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN21G1AG1 — Control Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN31G2AG2 — Screen Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN4H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN5H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN61PAP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN71G3AG3 — Suppressor GridGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN7ISAIS — Internal ScreenGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN71KAK — CathodeGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN82KBK — Cathode

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN92G1BG1 — Control Grid

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DC

Section ratings

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
400000 Ω
Transconductance
0.0055 S
Amplification factor
70
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
1.2 W
Max screen dissipation
0.2 W
Max cathode current
15 mA

Published ratings/characteristics promoted from supplied source; additional conditions retained in parameter table.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
20000 Ω
Transconductance
0.0035 S
Amplification factor
70
Max plate voltage
250 V
Max plate dissipation
1.4 W
Max cathode current
10 mA

Published ratings/characteristics promoted from supplied source; additional conditions retained in parameter table.

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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • EquivalentElectricalType

    8JW8

    ExceptHeater

  • ControlledWarmupHeater

    1 boolean

SECTION 2

Triode

Characteristic

  • Heater Voltage

    6 V

  • Heater Current

    450 mA

  • EquivalentElectricalType

    8JW8

    ExceptHeater

  • ControlledWarmupHeater

    1 boolean

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum Plate Voltage

    250 V

  • Maximum Screen Voltage

    250 V

  • Maximum Plate Dissipation

    1.2 W

  • Maximum Screen Dissipation

    0.2 W

  • Maximum Cathode Current

    15 mA

Characteristic

  • Plate Resistance

    400000 ohm

  • Transconductance

    5500 uS

  • Interelectrode Capacitances Published

    true

SECTION 2

Triode

Other

  • Maximum Plate Voltage

    250 V

  • Maximum Plate Dissipation

    1.4 W

  • Maximum Cathode Current

    10 mA

Characteristic

  • Plate Resistance

    20000 ohm

  • Transconductance

    3500 uS

  • Amplification Factor

    70

  • Interelectrode Capacitances Published

    true

Data set 03

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 2

Triode

Characteristic

  • Heater Voltage (ac/dc)

    9 volts

    Published value from supplied target entry

  • Heater Current

    0.3 ampere

    Published value from supplied target entry

  • Plate Supply Voltage

    650 volts

    Published value from supplied target entry

  • Plate Voltage

    250 volts

    Published value from supplied target entry

  • Grid-No

    2

    Published value from supplied target entry

  • Grid-No.Z Voltage

    250 volts

    Published value from supplied target entry

  • Peak Cathode Current*

    60 mA

    Published value from supplied target entry

  • Cathode Current

    15 mA

    Published value from supplied target entry

  • Plate Dissipation

    1.2 watts

    Published value from supplied target entry

  • Grid-No

    0.8 watts

    Published value from supplied target entry

  • Input Impedance at

    300

    Published value from supplied target entry

  • Plate Voltage

    100 volts

    Published value from supplied target entry

  • Grid-No

    100

    Published value from supplied target entry

  • Grid-No.l (Control-Grid) Voltage

    1 volts

    Published value from supplied target entry

  • Mu Factor, Grid-No.l to Grid-No

    47

    Published value from supplied target entry

  • Amplification Factor

    70

    Published value from supplied target entry

  • Input Resistance

    0.4 megohm

    Published value from supplied target entry

  • Transconductance

    5600

    Published value from supplied target entry

  • Plate Current

    6 mA

    Published value from supplied target entry

  • Grid-No

    1.7 mA

    Published value from supplied target entry

  • For grid-No.l voltage of

    12.5 volts

    Published value from supplied target entry

  • For grid current of

    10 mA

    Published value from supplied target entry

  • Grid-No

    0 volts

    Published value from supplied target entry

  • For grid-No.l current of

    -1.3 volts

    Published value from supplied target entry

  • For plate and grid-No

    200 volts

    Published value from supplied target entry

  • and plate current of

    -16 volts

    Published value from supplied target entry

  • Heater Voltage (ac/dc)

    25.2 volts

    Published value from supplied target entry

  • Heater Current

    0.3 amperes

    Published value from supplied target entry

  • Heater Warm-up Time

    11 seconds

    Published value from supplied target entry

  • Plate Voltage

    120 volts

    Published value from supplied target entry

  • Grid-No

    110 volts

    Published value from supplied target entry

  • Grid-No.l (Control-Grid) Voltage

    -8 volts

    Published value from supplied target entry

  • Amplification Factor

    20

    Published value from supplied target entry

  • Plate Resistance (Approx.)

    11700 ohms

    Published value from supplied target entry

  • Transconductance

    7100 umhos

    Published value from supplied target entry

  • Plate Current

    46 mA

    Published value from supplied target entry