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Power - TV Vertical Output ·BeamPower-Triode

6LU8

Television combination tube with a pulse-rated beam-power section designed for vertical-deflection output and an associated small-signal section for sweep circuitry.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
12DZ
Socket code
B9A
Base pins
12
Nominal heater
6.3 V / 1.5 A

Description

High-mu triode and beam power tube used as combined vertical-deflection oscillator and vertical-deflection amplifier in color television receivers.

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
12DZ
Socket code
B9A
Base pins
12
Nominal heater voltage
6.3 V
Nominal heater current
1.5 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12DZ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
16000 Ω
Transconductance
0.0036 S
Amplification factor
58
Max plate voltage
400 V
Max plate dissipation
2.5 W
Max cathode current
30 mA

Published source values promoted where applicable.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
12000 Ω
Transconductance
0.0093 S
Amplification factor
6.5
Max plate voltage
400 V
Max screen voltage
300 V
Max plate dissipation
14 W
Max screen dissipation
2.75 W
Max cathode current
75 mA

Published source values promoted 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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

  • Service

    Vertical deflection oscillator

SECTION 2

Beam Power

Application

  • Service

    Vertical deflection amplifier

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum Plate Voltage

    400 V

  • Maximum Plate Dissipation

    2.5 W

  • Maximum Cathode Current

    30 mA

Characteristic

  • Plate Resistance

    16000 ohm

  • Transconductance

    3600 uS

  • Amplification Factor

    58

  • Interelectrode Capacitances Published

    true

SECTION 2

Beam Power

Other

  • Maximum Plate Voltage

    400 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    14 W

  • Maximum Screen Dissipation

    2.75 W

  • Maximum Cathode Current

    75 mA

Characteristic

  • Plate Resistance

    12000 ohm

  • Transconductance

    9300 uS

  • Amplification Factor

    6.5

  • Interelectrode Capacitances Published

    true

Data set 03

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage

    6.3 V

    Nominal

  • Heater Current

    1.5 A

    Nominal

  • Peak Heater-Cathode Voltage

    200 V

  • Average Heater-Cathode Voltage

    100 V

  • Plate Voltage

    250 V

    ClassA

  • Control Grid Voltage

    -4 V

    ClassA

  • Plate Current

    2.3 mA

    ClassA

  • Peak Negative-Pulse Control-Grid Voltage

    400 V

    VerticalDeflection

SECTION 2

Beam Power

Other

  • Plate Voltage

    135 V

    ClassA

  • Control Grid Voltage

    -10 V

    ClassA

  • Plate Current

    56 mA

    ClassA

  • Screen Voltage

    120 V

    ClassA

  • Peak Positive-Pulse Plate Voltage

    2500 V

    VerticalDeflection

  • Peak Negative-Pulse Control-Grid Voltage

    250 V

    VerticalDeflection

  • Bulb Temperature

    210 C

    VerticalDeflection