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Rectifier - TV Line Scan Boost ·Rectifier

1G3GT

High-voltage television flyback/EHT rectifier designed to convert horizontal-output transformer pulses into the DC accelerating supply required by the CRT.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
8
Nominal heater
1.25 V / 200 mA

Description

1G3GT is a Rectifier device. High-voltage diode/half-wave rectifier for television flyback or other high-voltage service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
8
Nominal heater voltage
1.25 V
Nominal heater current
200 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

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
33000 V
Rectifier nominal output current
1.1 mA
Rectifier peak forward current
50 mA
Rectifier forward voltage drop
100 V

Promoted values use primary pulse-rectifier service; RF rectifier service 33 kV PIV retained separately.

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

Rectifier

Other

  • Filament Voltage

    1.25 V

    Nominal

  • Filament Current

    200 mA

    Nominal

  • InversePlateVoltageTotalDcAndPeak

    26000 V

    PulseRectifierService

  • InversePlateVoltageDc

    21000 V

    PulseRectifierService

  • Peak Plate Current

    50 mA

    PulseRectifierService

  • Average Plate Current

    0.5 mA

    PulseRectifierService

  • Peak Inverse Plate Voltage

    33000 V

    RFRectifierService

  • Peak Plate Current

    30 mA

    RFRectifierService

  • Average Plate Current

    1 mA

    RFRectifierService

  • SupplyFrequencyRange

    1.5-100 kHz

    RFRectifierService

  • Filament Voltage Minimum

    1.05 V

  • FilamentVoltageAverage

    1.25 V

  • Filament Voltage Maximum

    1.45 V

Capacitance

  • Plate To Filament And Internal Shield Capacitance

    1.3 pF

    WithoutExternalShield;Approx

Data set 02

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

    1.3 pF

  • Tube Voltage Drop

    100 V

    PlateCurrent=7mA

Other

  • Peak Inverse Plate Voltage

    26000 V

    Flyback

  • Steady-State Peak Plate Current

    50 mA

  • DC Output Current

    1 mA

  • RF Rectifier Absolute Maximum Inverse Voltage

    33000 V

    RFRectifier

Data set 03

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Filament/heater voltage

    1.25 V

  • Filament/heater current

    200 mA

  • Maximum total DC-plus-peak inverse voltage

    - to 30000 V

    FlybackRectifier

  • Maximum steady-state peak plate current

    50 mA

    FlybackRectifier

  • Maximum DC output current

    0.5 mA

    FlybackRectifier

Capacitance

  • Plate-to-filament/heater capacitance

    1.5 pF

    Approximate

Data set 04

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Peak inverse plate voltage DC component

    21000 V

    FlybackRectifier

  • Peak inverse plate voltage total DC and peak

    26000 V

    FlybackRectifier

  • Steady state peak plate current

    50 mA

    FlybackRectifier

  • DC output current

    0.5 mA

    FlybackRectifier

Characteristic

  • Tube voltage drop

    100 V

    Ib=7mA

Capacitance

  • Interelectrode capacitance

    1.3 pF

Data set 05

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

    26000 V

    PulsedRectifier

  • Maximum DC component of inverse plate voltage

    22000 V

    PulsedRectifier

  • Peak plate current

    50 mA

    PulsedRectifier

  • Average plate current

    0.5 mA

    PulsedRectifier

  • Peak inverse plate voltage

    33000 V

    RFRectifier

  • Peak plate current

    35 mA

    RFRectifier

  • Average plate current

    1.1 mA

    RFRectifier

  • Supply-frequency range minimum

    1.5 kHz

    RFRectifier

  • Supply-frequency range maximum

    100 kHz

    RFRectifier

Characteristic

  • Tube voltage drop

    100 V

    PlateCurrent=7mA

Application

  • Application

    High-voltage half-wave pulsed rectifier

    TelevisionFlyback