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Power - TV Horizontal Output (sweep) ·BeamPower

12DQ6B

High-current television horizontal-output beam-power tube with increased sweep capability, approximately 18 W plate dissipation, and strong positive and negative pulse-voltage ratings.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
6AM
Socket code
OCTAL7
Base pins
7
Nominal heater
12.6 V / 600 mA

Description

Glass-octal beam-power tube used as a horizontal-deflection amplifier in television receivers; the source groups the GW6/DQ6B heater variants.

Socket description

7-contact octal-family base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
6AM
Socket code
OCTAL7
Base pins
7
Nominal heater voltage
12.6 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

6AM - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Pin 1—NC

May be omitted on some physical base variants

Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN2Pin 2—H — HeaterVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN3Pin 3—NCVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN4Pin 4AG2 — Screen GridVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN5Pin 5AG1 — Control GridVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN7Pin 7—H — HeaterVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN8Pin 8ABP — Beam-Forming PlateGroup AM8Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN8Pin 8AK — CathodeGroup AM8Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

CAP1Top capAP — Plate (Anode)Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
18000 Ω
Transconductance
0.0073 S
Amplification factor
4.4
Max plate voltage
770 V
Max screen voltage
200 V
Max plate dissipation
18 W
Max screen dissipation
3.6 W
Max cathode current
175 mA

Published Westinghouse ratings, characteristics, capacitances, pulse/deflection data, and typical operating conditions promoted where applicable; additional values retained as parameters.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • PlateSupplyVoltageDC

    770 V

    HorizontalDeflection

  • PeakPositivePlateVoltage

    6500 V

    HorizontalDeflection

Characteristic

  • Plate Current

    64 mA

    PentodeOperation;PlateVoltage=250V

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Peak positive plate voltage maximum

    6000 V

    Pulse

  • Peak negative pulse plate voltage maximum

    -1500 V

    Pulse

  • Average cathode current maximum

    175 mA

  • Peak cathode current maximum

    610 mA

    Pulse

  • Typical plate voltage

    250 V

  • Typical grid2 voltage

    150 V

Characteristics

  • Transconductance

    7300 uS

Application

  • Application

    Horizontal-deflection output amplifier

Data set 03

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate supply voltage DC boost plus power supply

    770 V

    HorizontalDeflection

  • Peak positive pulse plate voltage

    6000 V

    HorizontalDeflection

  • Peak negative pulse plate voltage

    1500 V

    HorizontalDeflection

  • Peak negative grid 1 voltage

    330 V

    HorizontalDeflection

  • Peak cathode current

    640 mA

    HorizontalDeflection

Characteristic

  • Plate current at 250 V plate, 150 V screen

    55 mA

    PentodeOperation

  • Screen current at 250 V plate, 150 V screen

    1.5 mA

    PentodeOperation

  • Triode mu

    4.5

    TriodeConnection

Data set 04

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Maximum pulse duration

    200 microseconds

    Published in approved 17DQ6B target datasheet entry; Section1

  • be reduced to 100 mAwith a maximum pulse duration of

    400 microseconds

    Published in approved 17DQ6B target datasheet entry; Section1

  • Heater Voltage (ac/dc) 6.3 12.6

    16.8 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • Heater Current 1.2 0.6

    450 mA

    Published in approved 17DQ6B target datasheet entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 17DQ6B target datasheet entry; Section1

  • DC Plate Supply Voltage

    770 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • Peak Positive-Pulse Plate Voltage*

    6500 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • Peak Negative-Pulse Plate Voltage

    1500 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • DC Grid-No.2 (Screen-Grid) Voltage

    220 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • DC Grid-No.l (Control-Grid) Voltage

    55 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • Peak Negative-Pulse Grid-No.l Voltage

    330 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • Peak Cathode Current

    550 mA

    Published in approved 17DQ6B target datasheet entry; Section1

  • Average Cathode Current

    175 mA

    Published in approved 17DQ6B target datasheet entry; Section1

  • Plate Dissipation*

    17.5 W

    Published in approved 17DQ6B target datasheet entry; Section1

  • Grid-No.2 Input

    3.5 W

    Published in approved 17DQ6B target datasheet entry; Section1

  • Bulb Temperature (At hottest point)

    240 °C

    Published in approved 17DQ6B target datasheet entry; Section1

  • Grid-No. 1-Circuit Resistance, for grid-resistor-bias operation

    1 MΩ

    Published in approved 17DQ6B target datasheet entry; Section1

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

    10 microseconds

    Published in approved 17DQ6B target datasheet entry; Section1

Capacitance

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

    3 pF

    Published in approved 17DQ6B target datasheet entry; Section1

Characteristic

  • Plate Voltage 150 60

    250 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • C.rid-No.2 Voltage 150 150

    150 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • Grid-No. 1 Voltage —22.5 0

    -22.5 V

    Published in approved 17DQ6B target datasheet entry; Section1

  • Plate Resistance (Approx.)

    15000 Ω

    Published in approved 17DQ6B target datasheet entry; Section1

  • Giid-No.2 Current 32"

    2.1 mA

    Published in approved 17DQ6B target datasheet entry; Section1

  • 1 mA

    -42 V

    Published in approved 17DQ6B target datasheet entry; Section1