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Rectifier - TV Line Scan Boost ·Rectifier

1X2B

Filamentary high-voltage rectifier for television flyback/EHT service. It converts horizontal-output transformer pulses into CRT accelerating voltage with a low-power directly heated filament at elevated potential.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9Y
Socket code
B9A
Base pins
9
Nominal heater
1.25 V / 200 mA

Description

Directly heated high-voltage television rectifier diode (1X2B) for flyback service.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9Y
Socket code
B9A
Base pins
9
Nominal heater voltage
1.25 V
Nominal heater current
200 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9Y - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1F1—F — Filament

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN2F2—F — Filament

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN3IC—IC

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN4F1—F — Filament

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN5F2—F — Filament

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN6F1—F — Filament

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN7IC—IC

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN8F2—F — Filament

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

PIN9F1—F — Filament

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

CAP1PAP — Plate (Anode)

Transcribed from EIA chart; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9Y

Section ratings

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
22000 V
Rectifier nominal output current
0.5 mA
Rectifier peak forward current
45 mA
Rectifier forward voltage drop
100 V

Pulsed high-voltage rectifier.

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

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Filament Voltage

    1.25 V

  • Filament Current

    200 mA

  • Anode-to-Filament Capacitance

    1 pF

    Approximate

Other

  • Peak Inverse Voltage

    25000 V

  • Peak Anode Current

    12 mA

  • DC Anode Current

    2 mA

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum inverse voltage

    18000 V

    TVFlyback; InverseVoltageDCComponent

  • Maximum DC output current

    0.5 mA

    TVFlyback; InverseVoltageDCComponent

  • Maximum peak current

    45 mA

    TVFlyback; InverseVoltageDCComponent

Characteristics

  • Forward voltage drop

    100 V

    TVFlyback; InverseVoltageDCComponent; At 7 mA DC

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater voltage

    1.25 V

    Nominal

  • Heater current

    200 mA

    Nominal

Data set 04

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Filament Voltage

    1.25 V

  • Filament Current

    200 mA

  • Plate-to-Filament Capacitance

    1 pF

  • Tube Voltage Drop

    100 V

    PlateCurrent=7mA

Other

  • Peak Inverse Plate Voltage

    22000 V

    Flyback

  • Steady-State Peak Plate Current

    45 mA

  • DC Output Current

    0.5 mA

  • Positive Peak Plate Voltage

    18000 V

  • Negative Peak Plate Voltage

    -2000 V

  • DC Output Voltage

    18000 V

  • DC Output Current

    100 uA

Data set 05

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Peak inverse voltage maximum

    22000 V

    FlybackRectifier

  • Average plate current maximum

    0.5 mA

    FlybackRectifier

  • Application

    Television high-voltage rectifier

    Section1

Data set 06

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater/filament voltage

    1.25 V

  • Heater/filament current

    200 mA

  • Peak inverse plate voltage total DC plus peak

    22000 V

    PulsedRectifier

  • Maximum DC component of inverse plate voltage

    18000 V

    PulsedRectifier

  • Peak plate current

    45 mA

    PulsedRectifier

  • Average plate current

    0.5 mA

    PulsedRectifier

Characteristic

  • Tube voltage drop

    100 V

    PlateCurrent=7mA

Application

  • Application

    High-voltage half-wave pulsed rectifier

    TelevisionFlyback