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Power - TV Horizontal Output (sweep) ·BeamPower

21KQ6

Beam-power tube for television horizontal-deflection service, with multi-kilovolt pulse ratings and operating limits explicitly referenced to the horizontal scanning cycle.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
40A
Socket code
B12C
Base pins
12
Nominal heater
21.5 V / 450 mA

Description

21KQ6 is a beam-power tube for television deflection or power-amplifier service. The supplied RCA manual excerpt was reviewed for heater data, physical sections, maximum ratings, electrical characteristics, capacitances, and stated operating conditions.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
40A
Socket code
B12C
Base pins
12
Nominal heater voltage
21.5 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

40A - 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
7500 Ω
Max plate voltage
650 V
Max screen voltage
275 V
Max cathode current
275 mA

Promoted from semantically identified published ratings/characteristics; additional values preserved as section 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

  • Heater Voltage 21.5

    29 V

    Heater Voltage 21.5 29 volts

  • Heater Current 0.45

    300 mA

    Heater Current 0.45 0.3 ampere

  • Plate Voltage

    275 V

    Plate Voltage 275 volts

  • Peak Positive-Pulse Plate Voltage*

    6500 V

    Peak Positive-Pulse Plate Voltage* 6500 volts

  • Peak Negative-Pulse Plate Voltage*

    1660 V

    Peak Negative-Pulse Plate Voltage* 1660 volts

  • Grid-No.3 Voltage

    70 V

    Grid-No.3 Voltage 70 volts

  • Grid-No.2 Voltage

    275 V

    Grid-No.2 Voltage 275 volts

  • Peak Negative-Pulse Grid-No.l Voltage

    330 V

    Peak Negative-Pulse Grid-No.l Voltage 330 volts

  • Average Cathode Current

    275 mA

    Average Cathode Current 275 mA

  • Grid-No.l-Circuit Resistance

    0.5 Mohm

    Grid-No.l-Circuit Resistance 0.5 megohm

  • Grid-No.l-Circuit Resistance, for horizontal-deflection circuit

    2.2 Mohm

    Grid-No.l-Circuit Resistance, for horizontal-deflection circuit 2.2 megohms

  • # Pulse duration must not exceed 22% of a horizontal scanning cycle (

    18 us

    # Pulse duration must not exceed 22% of a horizontal scanning cycle (18 microseconds)

  • DC Plate Supply Voltage

    900 V

    DC Plate Supply Voltage 900 volts

  • Peak Positive-Pulse Plate Voltage*

    7600 V

    Peak Positive-Pulse Plate Voltage* 7600 volts

  • Peak Negative-Pulse Plate Voltage

    100 V

    Peak Negative-Pulse Plate Voltage 100 volts

  • Maximum plate/supply voltage

    6500 V

    Published section value

  • Maximum screen-grid voltage

    275 V

    Published section value

Characteristic

  • Plate Voltage 40

    50 V

    Plate Voltage 40 50 volts

  • Grid-No.3 (Suppressor-Grid) Voltage 0

    0 V

    Grid-No.3 (Suppressor-Grid) Voltage 0 0 volts

  • Grid-No.2 (Screen-Grid) Voltage 135

    200 V

    Grid-No.2 (Screen-Grid) Voltage 135 200 volts

  • Plate Voltage 125 6000 50

    175 V

    Plate Voltage 125 6000 50 175 volts

  • Grid-No.2 (Screen-Grid) Voltage

    125 V

    Grid-No.2 (Screen-Grid) Voltage .... 125 125 125 125 volts

  • Grid-No.l (Control-Grid) Voltage —25 0 —

    23 V

    Grid-No.l (Control-Grid) Voltage —25 0 —23 volts

  • Plate Resistance (Approx.)

    7500 ohm

    Plate Resistance (Approx.) 7500 ohms

  • Plate Current 600

    90 mA

    Plate Current 600 90 mA

  • Grid-No.2 Current 42

    1.7 mA

    Grid-No.2 Current 42 1.7 mA

  • current of

    1 mA

    current of 1 mA —45 volts

  • Plate resistance

    7500 ohm

    Published section value