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Power - TV Vertical Output ·Triode-Triode

6FY7

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
12EO
Socket code
B12C
Base pins
12
Nominal heater
6.3 V / 1.05 A

Description

Dissimilar dual triode used as a combined vertical-deflection oscillator and vertical-deflection amplifier in television receivers.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
12EO
Socket code
B12C
Base pins
12
Nominal heater voltage
6.3 V
Nominal heater current
1.05 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12EO - 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
40500 Ω
Transconductance
0.0016 S
Amplification factor
65
Max plate voltage
330 V
Max plate dissipation
1 W
Max cathode current
20 mA

Oscillator section.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
920 Ω
Transconductance
0.0065 S
Amplification factor
6
Max plate voltage
275 V
Max plate dissipation
7 W
Max cathode current
50 mA

Vertical-deflection amplifier section; 2000 V pulse plate rating preserved as parameter.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Typical Plate Voltage

    250 V

    Section1

Characteristic

  • Typical Plate Current

    1.4 mA

    Section1

SECTION 2

Triode

Other

  • Peak Positive Pulse Plate Voltage

    2000 V

    Section2

  • Typical Plate Voltage

    150 V

    Section2

Characteristic

  • Typical Plate Current

    35 mA

    Section2

Data set 02

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage nominal

    6.3 V

  • Heater voltage tolerance

    0.6 V

    ±

  • Heater current

    1.05 A

    HeaterVoltage=6.3V

  • Peak heater-cathode voltage, heater negative

    200 V

    Section1

  • Peak heater-cathode voltage, heater positive

    200 V

    Section1

  • Heater-cathode positive DC component maximum

    100 V

    Section1

  • Maximum DC plate voltage

    330 V

    VerticalDeflectionOscillator

  • Peak negative-pulse grid voltage

    400 V

    VerticalDeflectionOscillator

  • Peak cathode current

    70 mA

    VerticalDeflectionOscillator

  • Average cathode current

    20 mA

    VerticalDeflectionOscillator

  • Maximum plate dissipation

    1 W

    VerticalDeflectionOscillator

  • Maximum grid-circuit resistance

    2.2 MΩ

    VerticalDeflectionOscillator

Capacitance

  • Grid-to-plate capacitance

    4.4 pF

    Section1

  • Input capacitance

    2.2 pF

    Section1

  • Output capacitance

    0.4 pF

    Section1

Characteristics

  • Plate voltage

    250 V

    ClassA1

  • Grid voltage

    -3 V

    ClassA1

  • Amplification factor

    65

    ClassA1

  • Plate resistance

    40500 ohm

    ClassA1

  • Transconductance

    1600 µS

    ClassA1

  • Plate current

    1.4 mA

    ClassA1

  • Grid voltage for plate current 30 µA

    -5.5 V

    ClassA1

SECTION 2

Triode

Other

  • Heater voltage nominal

    6.3 V

  • Heater voltage tolerance

    0.6 V

    ±

  • Heater current

    1.05 A

    HeaterVoltage=6.3V

  • Peak heater-cathode voltage, heater negative

    200 V

    Section2

  • Peak heater-cathode voltage, heater positive

    200 V

    Section2

  • Heater-cathode positive DC component maximum

    100 V

    Section2

  • Maximum DC plate voltage

    275 V

    VerticalDeflectionAmplifier

  • Maximum peak positive-pulse plate voltage

    2000 V

    VerticalDeflectionAmplifier

  • Peak negative-pulse grid voltage

    250 V

    VerticalDeflectionAmplifier

  • Peak cathode current

    175 mA

    VerticalDeflectionAmplifier

  • Average cathode current

    50 mA

    VerticalDeflectionAmplifier

  • Maximum plate dissipation

    7 W

    VerticalDeflectionAmplifier

  • Maximum grid-circuit resistance

    2.2 MΩ

    VerticalDeflectionAmplifier

Capacitance

  • Grid-to-plate capacitance

    9.5 pF

    Section2

  • Input capacitance

    6.5 pF

    Section2

  • Output capacitance

    1.2 pF

    Section2

Characteristics

  • Plate voltage

    60 V

    ClassA1

  • Grid voltage

    0 V

    ClassA1;PlateVoltage=60V;ShortInterval<=2s

  • Plate current

    95 mA

    ClassA1;PlateVoltage=60V

  • Plate voltage

    150 V

    ClassA1

  • Grid voltage

    -17.5 V

    ClassA1;PlateVoltage=150V

  • Amplification factor

    6

    ClassA1;PlateVoltage=150V

  • Plate resistance

    920 ohm

    ClassA1;PlateVoltage=150V

  • Transconductance

    6500 µS

    ClassA1;PlateVoltage=150V

  • Plate current

    35 mA

    ClassA1;PlateVoltage=150V

  • Plate current at grid -25 V

    6 mA

    ClassA1;PlateVoltage=150V

  • Grid voltage for plate current 50 µA

    -36 V

    ClassA1;PlateVoltage=150V

Data set 03

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage (ac/dc) 6.3 11

    14.7 V

    Published in approved 6FY7 target entry; Section1

  • Heater Current 1.05 0.6

    450 mA

    Published in approved 6FY7 target entry; Section1

  • Heater Warm-up Time (Average) — 11

    11 seconds

    Published in approved 6FY7 target entry; Section1

  • —

    36 V

    Published in approved 6FY7 target entry; Section1

  • DC Plate Voltage 330

    275 V

    Published in approved 6FY7 target entry; Section1

  • Peak Positive-Pulse Plate Voltage*

    2000 V

    Published in approved 6FY7 target entry; Section1

  • Peak Negative-Pulse Plate Voltage 400

    250 V

    Published in approved 6FY7 target entry; Section1

  • Peak Cathode Current 70

    175 mA

    Published in approved 6FY7 target entry; Section1

  • Average Cathode Current 20

    50 mA

    Published in approved 6FY7 target entry; Section1

  • Grid-Circuit Resistance 2.2

    2.2 MΩ

    Published in approved 6FY7 target entry; Section1

Characteristic

  • Plate Voltage 250

    150 V

    Published in approved 6FY7 target entry; Section1

  • Grid Voltage —3

    17.5 V

    Published in approved 6FY7 target entry; Section1

  • Plate Resistance (Approx.) 40500

    920 Ω

    Published in approved 6FY7 target entry; Section1

  • Plate Current 1.4

    35 mA

    Published in approved 6FY7 target entry; Section1

SECTION 2

Triode

Other

  • Heater Voltage (ac/dc) 6.3 11

    14.7 V

    Published in approved 6FY7 target entry; Section2

  • Heater Current 1.05 0.6

    450 mA

    Published in approved 6FY7 target entry; Section2

  • Heater Warm-up Time (Average) — 11

    11 seconds

    Published in approved 6FY7 target entry; Section2

  • —

    36 V

    Published in approved 6FY7 target entry; Section2

  • DC Plate Voltage 330

    275 V

    Published in approved 6FY7 target entry; Section2

  • Peak Positive-Pulse Plate Voltage*

    2000 V

    Published in approved 6FY7 target entry; Section2

  • Peak Negative-Pulse Plate Voltage 400

    250 V

    Published in approved 6FY7 target entry; Section2

  • Peak Cathode Current 70

    175 mA

    Published in approved 6FY7 target entry; Section2

  • Average Cathode Current 20

    50 mA

    Published in approved 6FY7 target entry; Section2

  • Grid-Circuit Resistance 2.2

    2.2 MΩ

    Published in approved 6FY7 target entry; Section2

Characteristic

  • Plate Voltage 250

    150 V

    Published in approved 6FY7 target entry; Section2

  • Grid Voltage —3

    17.5 V

    Published in approved 6FY7 target entry; Section2

  • Plate Resistance (Approx.) 40500

    920 Ω

    Published in approved 6FY7 target entry; Section2

  • Plate Current 1.4

    35 mA

    Published in approved 6FY7 target entry; Section2