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Power - TV Vertical Output ·BeamPower

6EY6

Beam-power pentode intended for television vertical-deflection amplification, with substantial pulse-voltage and cathode-current capability for scanning service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7AC
Socket code
IO
Base pins
6
Nominal heater
6.3 V / 680 mA

Description

The 6EY6 is a beam-power pentode intended for television vertical-deflection amplifier operation, with substantial pulse-voltage and cathode-current capability.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7AC
Socket code
IO
Base pins
6
Nominal heater voltage
6.3 V
Nominal heater current
680 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7AC - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Pin 1—NCVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN2Pin 2—H — HeaterVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN3Pin 3AP — Plate (Anode)Verified

12L6GT/25L6GT manufacturer basing, 7AC

PIN4Pin 4AG2 — Screen GridVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN5Pin 5AG1 — Control GridVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN7Pin 7—H — HeaterVerified

12L6GT/25L6GT manufacturer basing, 7AC

PIN8Pin 8ABP — Beam-Forming PlateGroup AC8Verified

12L6GT/25L6GT manufacturer basing, 7AC

PIN8Pin 8AK — CathodeGroup AC8Verified

12L6GT/25L6GT manufacturer basing, 7AC

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
60000 Ω
Transconductance
0.0044 S
Max plate voltage
550 V
Max screen voltage
250 V
Max plate dissipation
10 W
Max screen dissipation
1.5 W
Max cathode current
65 mA
Rectifier max heater-cathode voltage
200 V
Rectifier warm-up time
11 s

Source sheet states electrical identity to 7EY6 except heater ratings; no 7EY6 values are inferred into promoted fields.

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

Characteristic

  • Plate Resistance

    60000 ohm

    Typical

  • Transconductance

    4400 uS

    Typical

  • Heater Warmup Time

    11 s

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Maximum_DC_plate_voltage

    350 V

  • Maximum_peak_cathode_current

    180 mA

  • Heater_warmup_time

    11 s

  • Plate_voltage

    250 V

    ClassA

  • Screen_voltage

    250 V

    ClassA

  • Grid_1_voltage

    -17.5 V

    ClassA

Characteristic

  • Plate_current

    44 mA

    ClassA

  • Screen_current

    3 mA

    ClassA

Capacitance

  • Grid-1-to-plate capacitance

    0.7 pF

  • Input capacitance

    6.5 pF

  • Output capacitance

    7 pF