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Power - TV Horizontal Output (sweep) ·BeamPower

40KD6

Heavy-duty Duodecar beam-power tube for television horizontal-deflection output, tolerating approximately 7 kV positive flyback pulses with about 33 W plate dissipation.

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

Description

Duodecar beam-power tube used as a horizontal-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
12GW
Socket code
B12C
Base pins
12
Nominal heater voltage
36 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12GW - 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
6000 Ω
Transconductance
0.014 S
Max plate voltage
990 V
Max screen voltage
200 V
Max plate dissipation
33 W
Max screen dissipation
5 W

Horizontal-deflection ratings; peak pulse values preserved as parameters.

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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Grid-No. 3-Circuit Resistance

    0.68 MΩ

    Published in approved 30KD6 target datasheet entry; Section1

  • For fixed-bias operation

    0.5 MΩ

    Published in approved 30KD6 target datasheet entry; Section1

  • For cathode-bias operation

    1 MΩ

    Published in approved 30KD6 target datasheet entry; Section1

  • # Pulse duration must not exceed 15% of a horizontal scanning cycle (

    10 microseconds

    Published in approved 30KD6 target datasheet entry; Section1

  • Heater Voltage 6.3 30

    36 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Heater Current 2.85 0.6

    450 mA

    Published in approved 30KD6 target datasheet entry; Section1

  • Heater Warm-up Time 11

    11 seconds

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid No.l to Plate

    0.8 pF

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3

    40 pF

    Published in approved 30KD6 target datasheet entry; Section1

  • DC Plate Supply Voltage

    990 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Peak Positive-Pulse Plate Voltage*

    7000 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Positive DC Grid-No.3 Voltage

    20 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.2 Voltage

    200 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Peak Negative-Pulse Grid-No.l Voltage

    250 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Peak Cathode Current

    1400 mA

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.2 Input

    5 W

    Published in approved 30KD6 target datasheet entry; Section1

  • Transconductance —

    14000 µS

    Published in approved 30KD6 target datasheet entry; Section1

  • Plate Current — 750

    120 mA

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No. 2 Current — 42"

    1.8 mA

    Published in approved 30KD6 target datasheet entry; Section1

  • of 1.0 juA — —

    -40 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.l-Circuit Resistance

    2.2 MΩ

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No. 3-Circu it Resistance

    0.01 MΩ

    Published in approved 30KD6 target datasheet entry; Section1

  • # Pulse duration must not exceed 15% of a horizontal scanning cycle (

    10 microseconds

    Published in approved 30KD6 target datasheet entry; Section1

  • Heater Voltage (ac/dc) 4.5 5.6

    6.3 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Heater Current 0.6 0.45

    400 mA

    Published in approved 30KD6 target datasheet entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 30KD6 target datasheet entry; Section1

  • Plate Voitagc 280

    280 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Supply Voltage

    280 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value

    0 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Cathode Current

    20 mA

    Published in approved 30KD6 target datasheet entry; Section1

  • Plate Dissipation

    2 W

    Published in approved 30KD6 target datasheet entry; Section1

  • For grid-No. 2 voltages up to

    140 V

    Published in approved 30KD6 target datasheet entry; Section1

  • For grid-No.2 voltages between 140 and

    280 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Plate Supply Voltage 125

    125 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.2 Supply Voltage

    125 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.l Supply Voltage 0

    0 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Cathode-Bias Resistor 68

    33 Ω

    Published in approved 30KD6 target datasheet entry; Section1

Capacitance

  • Plate to Cathode, Heater, Grid No.2, and Grid No. 3

    16 pF

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid to Plate

    1.3 pF

    Published in approved 30KD6 target datasheet entry; Section1

  • and Internal Shield

    2.4 pF

    Published in approved 30KD6 target datasheet entry; Section1

  • and Internal Shield

    2 pF

    Published in approved 30KD6 target datasheet entry; Section1

  • and Internal Shield

    5 pF

    Published in approved 30KD6 target datasheet entry; Section1

  • and Internal Shield

    3.4 pF

    Published in approved 30KD6 target datasheet entry; Section1

Characteristic

  • Plate Voltage 150 60

    150 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Voltage 150 110

    110 V

    Published in approved 30KD6 target datasheet entry; Section1

  • Plate Resistance (Approx.) —

    6000 Ω

    Published in approved 30KD6 target datasheet entry; Section1