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Power - TV Vertical Output ·BeamPower-Triode

6KY8A

Multi-section television tube with a pulse-rated beam-power section intended for vertical-deflection output and a companion small-signal section for associated circuitry.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9QT
Socket code
B9E
Base pins
9
Nominal heater
6.3 V / 1.1 A

Description

High-mu triode plus beam-power section used as a combined vertical-deflection oscillator and amplifier in low-B-plus television receivers.

Socket description

Novar 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9QT
Socket code
B9E
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
1.1 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9QT - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Base PinBK — Cathode

Literal source label: 2K; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN2Base PinAG1 — Control Grid

Literal source label: 1G1; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN3Base PinAG3 — Suppressor GridGroup 9QT3

Literal source label: 1G3; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN3Base PinAK — CathodeGroup 9QT3

Literal source label: 1K; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN4Base Pin—H — Heater

Literal source label: H; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN5Base Pin—H — Heater

Literal source label: H; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN6Base PinAP — Plate (Anode)

Literal source label: 1P; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN7Base PinAG2 — Screen Grid

Literal source label: 1G2; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN8Base PinBP — Plate (Anode)

Literal source label: 2P; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

PIN9Base Pin—UNKNOWN

Literal source label: 2G; manufacturer confirmation pending

Unverified

EIA Base Connections printed page 134, 9QT

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
40000 Ω
Transconductance
0.0016 S
Amplification factor
64
Max plate voltage
330 V
Max plate dissipation
1.5 W
Max cathode current
22 mA

Representative electrical section from supplied RCA data sheet.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
18000 Ω
Transconductance
0.0084 S
Amplification factor
7
Max plate voltage
300 V
Max screen voltage
150 V
Max plate dissipation
12 W
Max screen dissipation
1.9 W
Max cathode current
70 mA

Representative electrical section from supplied RCA data sheet.

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

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    1.1 A

Characteristics

  • Voltage (AC or DC)

    6.3 V

    Published table column

  • Published electrical value

    1 V

    Published table column

  • Plate Voltage

    250 V

    Published source row

  • Plate Voltage (value 2)

    50 V

    Published source row

  • Plate Voltage (value 3)

    135 V

    Published source row

  • Grid-No

    2 V

    Published source row

  • Grid-No (value 2)

    120 V

    Published source row

  • Grid-No (value 3)

    120 V

    Published source row

  • Grid-No.l Voltage

    -3 V

    Published source row

  • Grid-No.l Voltage (value 2)

    0 V

    Published source row

  • Grid-No.l Voltage (value 3)

    -10 V

    Published source row

  • Plate Resistance (Approx.)

    40000 ohm

    Published source row

  • Plate Resistance (Approx.) (value 2)

    18000 ohm

    Published source row

  • Transconductance

    1600

    Published source row

  • Transconductance (value 2)

    8400

    Published source row

  • Plate Current

    1.4 mA

    Published source row

  • Plate Current (value 2)

    170 mA

    Published source row

  • Plate Current (value 3)

    39 mA

    Published source row

  • Grid-No

    2 mA

    Published source row

  • Grid-No (value 2)

    20 mA

    Published source row

  • Grid-No (value 3)

    3 mA

    Published source row

  • Grid-No

    1

    Published source row

  • DC Plate Voltage

    330 V

    Published source row

  • Peak Negative-Pulse Grid Voltage

    400 V

    Published source row

  • Peak Cathode Current

    77 mA

    Published source row

  • Average Cathode Current

    22 mA

    Published source row

  • Plate- Dissipation

    1.5 W

    Published source row

SECTION 2

Beam Power

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    1.1 A

  • DC Plate Voltage

    300 V

    Published source row

  • Peak. Positive-Pulse Plate Voltages

    2000 V

    Published source row

  • DC Grid-No

    2 V

    Published source row

  • DC Grid-No (value 2)

    150 V

    Published source row

  • (Control-Grid) Voltage

    250 V

    Published source row

  • Peak Cathode Current

    200 mA

    Published source row

  • Average Cathode Current

    70 mA

    Published source row

  • Plate Dissipation

    12 W

    Published source row

  • Grid-No

    2 W

    Published source row

  • Grid-No (value 2)

    1 W

    Published source row

  • Grid-No (value 3)

    9 W

    Published source row

  • such that the plate dissipation and grid—Xo

    2

    Published source row

Characteristics

  • Voltage (AC or DC)

    0.6 V

    Published table column

  • Published electrical value

    6 V

    Published table column

  • GRID-No

    2 V

    Published source row

  • GRID-No (value 2)

    120 V

    Published source row

  • GRID-No

    2

    Published source row

  • GRID-No (value 2)

    2

    Published source row

Capacitance

  • Grid No

    1 pF

    Published source row

  • Grid No (value 2)

    0 pF

    Published source row

  • Grid No (value 3)

    48 pF

    Published source row

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage (ac/dc) 6.3

    15 V

    Published in approved 6KY8A target datasheet entry; Section1

  • Heater Current 1.1

    450 mA

    Published in approved 6KY8A target datasheet entry; Section1

  • Heater Warm-up Time (Average)

    11 seconds

    Published in approved 6KY8A target datasheet entry; Section1

  • DC Plate Voltage 330

    300 V

    Published in approved 6KY8A target datasheet entry; Section1

  • DC Grid-No.2 Voltage

    150 V

    Published in approved 6KY8A target datasheet entry; Section1

  • Peak Negative-Pulse Grid-No.l Voltage 400

    250 V

    Published in approved 6KY8A target datasheet entry; Section1

  • Peak Cathode Current 77

    200 mA

    Published in approved 6KY8A target datasheet entry; Section1

  • Average Cathode Current 22

    60 mA

    Published in approved 6KY8A target datasheet entry; Section1

  • Plate Dissipation 1.5

    12 W

    Published in approved 6KY8A target datasheet entry; Section1

  • Grid-No.2 Input

    1.9 W

    Published in approved 6KY8A target datasheet entry; Section1

  • For grid-resistor-bias operation 2.2

    2.2 MΩ

    Published in approved 6KY8A target datasheet entry; Section1

  • # Pulse duration must not exceed 15% of a vertical scanning cycle (

    2.5 milliseconds

    Published in approved 6KY8A target datasheet entry; Section1

Capacitance

  • Grid to Cathode and Heater

    15 pF

    Published in approved 6KY8A target datasheet entry; Section1

  • Plate to Cathode and Heater

    7 pF

    Published in approved 6KY8A target datasheet entry; Section1

  • Grid No.l to Plate

    0.048 pF

    Published in approved 6KY8A target datasheet entry; Section1

  • Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3

    2.6 pF

    Published in approved 6KY8A target datasheet entry; Section1

  • Plate to Cathode, Heater, Grid No.2, and Grid No.3

    0.28 pF

    Published in approved 6KY8A target datasheet entry; Section1

Characteristic

  • Plate Voltage 250 50 135

    120 V

    Published in approved 6KY8A target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage —3 0 —10

    -10 V

    Published in approved 6KY8A target datasheet entry; Section1

  • Plate Resistance (Approx.) 40000

    18000 Ω

    Published in approved 6KY8A target datasheet entry; Section1

  • Transconductance 1600

    8400 µS

    Published in approved 6KY8A target datasheet entry; Section1

  • Plate Current 1.4 170"

    39 mA

    Published in approved 6KY8A target datasheet entry; Section1

  • Grid-No.2 Current 20"

    3 mA

    Published in approved 6KY8A target datasheet entry; Section1

  • current of

    1 mA

    Published in approved 6KY8A target datasheet entry; Section1

  • current of 1 mA

    -24 V

    Published in approved 6KY8A target datasheet entry; Section1

SECTION 2

Beam Power

Other

  • Heater Voltage (ac/dc) 6.3

    15 V

    Published in approved 6KY8A target datasheet entry; Section2

  • Heater Current 1.1

    450 mA

    Published in approved 6KY8A target datasheet entry; Section2

  • Heater Warm-up Time (Average)

    11 seconds

    Published in approved 6KY8A target datasheet entry; Section2

  • DC Plate Voltage 330

    300 V

    Published in approved 6KY8A target datasheet entry; Section2

  • DC Grid-No.2 Voltage

    150 V

    Published in approved 6KY8A target datasheet entry; Section2

  • Peak Negative-Pulse Grid-No.l Voltage 400

    250 V

    Published in approved 6KY8A target datasheet entry; Section2

  • Peak Cathode Current 77

    200 mA

    Published in approved 6KY8A target datasheet entry; Section2

  • Average Cathode Current 22

    60 mA

    Published in approved 6KY8A target datasheet entry; Section2

  • Plate Dissipation 1.5

    12 W

    Published in approved 6KY8A target datasheet entry; Section2

  • Grid-No.2 Input

    1.9 W

    Published in approved 6KY8A target datasheet entry; Section2

  • For grid-resistor-bias operation 2.2

    2.2 MΩ

    Published in approved 6KY8A target datasheet entry; Section2

  • # Pulse duration must not exceed 15% of a vertical scanning cycle (

    2.5 milliseconds

    Published in approved 6KY8A target datasheet entry; Section2

Capacitance

  • Grid to Cathode and Heater

    15 pF

    Published in approved 6KY8A target datasheet entry; Section2

  • Plate to Cathode and Heater

    7 pF

    Published in approved 6KY8A target datasheet entry; Section2

  • Grid No.l to Plate

    0.048 pF

    Published in approved 6KY8A target datasheet entry; Section2

  • Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3

    2.6 pF

    Published in approved 6KY8A target datasheet entry; Section2

  • Plate to Cathode, Heater, Grid No.2, and Grid No.3

    0.28 pF

    Published in approved 6KY8A target datasheet entry; Section2

Characteristic

  • Plate Voltage 250 50 135

    120 V

    Published in approved 6KY8A target datasheet entry; Section2

  • Grid-No.l (Control-Grid) Voltage —3 0 —10

    -10 V

    Published in approved 6KY8A target datasheet entry; Section2

  • Plate Resistance (Approx.) 40000

    18000 Ω

    Published in approved 6KY8A target datasheet entry; Section2

  • Transconductance 1600

    8400 µS

    Published in approved 6KY8A target datasheet entry; Section2

  • Plate Current 1.4 170"

    39 mA

    Published in approved 6KY8A target datasheet entry; Section2

  • Grid-No.2 Current 20"

    3 mA

    Published in approved 6KY8A target datasheet entry; Section2

  • current of

    1 mA

    Published in approved 6KY8A target datasheet entry; Section2

  • current of 1 mA

    -24 V

    Published in approved 6KY8A target datasheet entry; Section2