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Power - TV Horizontal Output (sweep) ·BeamPower

35LR6

High-transconductance Duodecar beam-power tube for horizontal-deflection output in color and monochrome television receivers, with roughly 30 W plate dissipation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
12FY
Socket code
B12C
Base pins
12
Nominal heater
35 V / 450 mA

Description

Duodecar beam-power tube used as a horizontal-deflection amplifier in color and black-and-white 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
12FY
Socket code
B12C
Base pins
12
Nominal heater voltage
35 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12FY - 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
5300 Ω
Transconductance
0.016 S
Amplification factor
3.5
Max plate voltage
990 V
Max screen voltage
220 V
Max plate dissipation
30 W
Max cathode current
375 mA

Published ratings and characteristics promoted where clearly stated; identical repeated diode/triode sections compressed 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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater voltage

    35 V

    Published nominal value

  • Heater current

    450 mA

    Published nominal value

Other

  • Application

    Horizontal-deflection amplifier

    Television

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater Voltage (ac/dc) 6.3

    35 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Heater Warm-up Time (Average)

    11 seconds

    Published in approved 35LR6 target datasheet entry; Section1

  • Grid-No. 2 Current 38t 2.4

    35 mA

    Published in approved 35LR6 target datasheet entry; Section1

  • plate current of

    1 mA

    Published in approved 35LR6 target datasheet entry; Section1

  • DC Plate Supply Voltage

    990 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Peak Positive- PI ate Pulse Voltage (Absolute Maximum)

    7500 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Peak Negative-Pulse Plate Voltage

    1100 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Positive Grid-No.3 Voltage

    75 V

    Published in approved 35LR6 target datasheet entry; Section1

  • DC Grid-No. 2 Voltage

    220 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Peak Negative-Pulse Grid-No.l Voltage

    330 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Average Cathode Current

    375 mA

    Published in approved 35LR6 target datasheet entry; Section1

  • Peak Cathode Current

    1300 mA

    Published in approved 35LR6 target datasheet entry; Section1

  • Plate Dissipation

    30 W

    Published in approved 35LR6 target datasheet entry; Section1

  • Grid-No.2 Input

    5 W

    Published in approved 35LR6 target datasheet entry; Section1

  • Bias feedback high-voltage regulation

    0.47 MΩ

    Published in approved 35LR6 target datasheet entry; Section1

  • DC or pulse shunt high-voltage regulation

    10 MΩ

    Published in approved 35LR6 target datasheet entry; Section1

  • Heater Voltage 6.3 21

    31.5 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Heater Current 1.5 0.45

    300 mA

    Published in approved 35LR6 target datasheet entry; Section1

  • Heater Warm-up Time . 11

    11 seconds

    Published in approved 35LR6 target datasheet entry; Section1

Characteristic

  • Plate Voltage 125 60 175

    60 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Voltage 125 115 110

    110 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage -20

    -20 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Plate Resistance (Approx.) -- —0 5300

    0 Ω

    Published in approved 35LR6 target datasheet entry; Section1

  • Transconductance (Grid No.l to Plate)

    16000 µS

    Published in approved 35LR6 target datasheet entry; Section1

  • Plate Current 740f 140

    700 mA

    Published in approved 35LR6 target datasheet entry; Section1

  • Plate Voltage 250 45 135

    120 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage —4 0 —10

    -10 V

    Published in approved 35LR6 target datasheet entry; Section1

  • Plate Resistance Approx.) 14000

    14000 Ω

    Published in approved 35LR6 target datasheet entry; Section1

  • Plate Current 2.S 200

    51 mA

    Published in approved 35LR6 target datasheet entry; Section1

  • For plate current of

    1 mA

    Published in approved 35LR6 target datasheet entry; Section1