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Power - TV Horizontal Output (sweep) ·BeamPower

12GC6

Heavy-duty beam-power tube for television horizontal-deflection output, rated for approximately 6.5 kV positive plate pulses and substantial peak cathode current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
8LX
Socket code
IO
Base pins
8
Nominal heater
12.6 V / 600 mA

Description

High-perveance beam pentode for television horizontal-deflection amplifier service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
8LX
Socket code
IO
Base pins
8
Nominal heater voltage
12.6 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

8LX - 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

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
20000 Ω
Transconductance
0.0066 S
Amplification factor
4.1
Max plate voltage
650 V
Max screen voltage
220 V
Max plate dissipation
17.5 W
Max screen dissipation
4.5 W
Max cathode current
175 mA

Horizontal-deflection pulse rating

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

  • Heater voltage

    12.6 V

  • Heater current

    600 mA

  • Peak positive plate voltage

    6500 V

    HorizontalDeflection

  • Peak cathode current

    550 mA

    HorizontalDeflection

Capacitance

  • Input capacitance

    15 pF

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • DC plate-supply voltage

    770 V

    HorizontalDeflection

  • Peak positive pulse plate voltage

    6500 V

    HorizontalDeflection

  • Peak negative pulse plate voltage

    -1500 V

    HorizontalDeflection

  • Grid #2 voltage maximum

    220 V

    HorizontalDeflection

  • Peak negative grid #1 voltage

    -330 V

    HorizontalDeflection

  • Peak cathode current

    550 mA

    HorizontalDeflection

  • Average cathode current

    175 mA

    HorizontalDeflection

  • Plate voltage

    250 V

    AverageCharacteristics

  • Grid #2 voltage

    150 V

    AverageCharacteristics

  • Grid #1 voltage

    -22.5 V

    AverageCharacteristics

  • Plate current

    75 mA

    AverageCharacteristics

  • Grid #2 current

    2.4 mA

    AverageCharacteristics

  • Heater warm-up time

    11 s

Characteristic

  • Plate resistance

    20000 ohm

    AverageCharacteristics

  • Transconductance

    6600 uS

    AverageCharacteristics

  • Triode amplification factor

    4.1

    TriodeConnection

Capacitance

  • Grid #1-to-plate capacitance

    0.55 pF

  • Input capacitance

    15 pF

  • Output capacitance

    7 pF

Data set 03

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • DC Plate Supply Voltage

    770 V

    HorizontalDeflection

  • Peak Cathode Current

    550 mA

    HorizontalDeflection

Data set 04

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater voltage

    12.6 V

  • Heater current

    600 mA

  • Maximum DC plate voltage

    770 V

    HorizontalDeflection

  • Peak positive-pulse plate voltage

    6500 V

    HorizontalDeflection

  • Peak negative-pulse plate voltage

    -1500 V

    HorizontalDeflection

  • Maximum screen voltage

    220 V

    HorizontalDeflection

  • Peak negative grid voltage

    -330 V

    HorizontalDeflection

  • Peak cathode current

    550 mA

    HorizontalDeflection

  • Average cathode current

    175 mA

    HorizontalDeflection

  • Screen input

    4.5 W

  • Plate dissipation

    17.5 W

  • Heater warm-up time

    11 s

    ControlledWarmup

Characteristic

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    150 V

    ClassA

  • Grid voltage

    -22.5 V

    ClassA

  • Triode-connected amplification factor

    4.1

    TriodeConnection

  • Plate resistance

    20000 ohm

    ClassA

  • Transconductance

    6600 uS

    ClassA

  • Plate current

    75 mA

    ClassA

  • Screen current

    2.4 mA

    ClassA

Capacitance

  • Grid-to-plate capacitance

    0.55 pF

  • Input capacitance

    15 pF

  • Output capacitance

    7 pF