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Power - TV Horizontal Output (sweep) ·BeamPower

21EX6

High-perveance beam-power pentode designed primarily for television horizontal-deflection amplification and high pulse-current sweep service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9E
Base pins
12
Nominal heater
21.5 V / 600 mA

Description

High-perveance beam-power pentode designed primarily for television horizontal-deflection amplifier service.

Socket description

Novar 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9E
Base pins
12
Nominal heater voltage
21.5 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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
18000 Ω
Transconductance
0.0077 S
Amplification factor
4.4
Max plate voltage
770 V
Max screen voltage
195 V
Max plate dissipation
18 W
Max screen dissipation
3.5 W
Max cathode current
220 mA
Rectifier max heater-cathode voltage
200 V
Rectifier warm-up time
11 s

Published promoted fields populated by printed ratings/characteristics headings.

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

Other

  • Peak Negative Pulse Plate Voltage

    1500 V

    HorizontalDeflection

  • Peak Cathode Current

    770 mA

    HorizontalDeflection

Characteristic

  • Transconductance

    7700 uS

    Typical

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • DC plate-supply voltage

    550 V

    HorizontalDeflection

  • Peak positive pulse plate voltage

    7000 V

    HorizontalDeflection

  • Peak negative pulse plate voltage

    -1500 V

    HorizontalDeflection

  • Maximum grid #2 voltage

    175 V

    HorizontalDeflection

  • Peak negative grid #1 voltage

    -300 V

    HorizontalDeflection

  • Average cathode current

    110 mA

    HorizontalDeflection

  • Peak cathode current

    400 mA

    HorizontalDeflection

  • Plate voltage

    250 V

    AverageCharacteristics

  • Grid #2 voltage

    150 V

    AverageCharacteristics

  • Plate current

    90 mA

    AverageCharacteristics

  • Grid #2 current

    6 mA

    AverageCharacteristics

Characteristic

  • Plate resistance

    18000 ohm

    AverageCharacteristics

  • Transconductance

    7300 uS

    AverageCharacteristics

  • Triode amplification factor

    4.3

    TriodeConnection

Capacitance

  • Grid #1-to-plate capacitance

    1.1 pF

  • Input capacitance

    22 pF

  • Output capacitance

    10 pF