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Rectifier - Half Wave ·Rectifier

5517

Heaterless gas-filled cold-cathode half-wave rectifier with instant operation for photoflash and high-voltage low-current supplies. It provides useful rectification without a heater circuit.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
-

Description

Gas-filled cold-cathode half-wave rectifier with instant operation for photoflash and high-voltage low-current supplies.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
-
Nominal heater current
-
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
2800 V
Rectifier nominal output current
12 mA
Rectifier peak forward current
100 mA
Rectifier forward voltage drop
100 V

Gas-filled cold-cathode half-wave rectifier; average tube drop is 100 V.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Peak inverse voltage

    2800 V

    Published rating

  • Average or DC output current

    12 mA

    Published rating

  • Peak forward current

    100 mA

    Published rating

Characteristics

  • Forward voltage drop

    100 V

    Published typical value

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum starting voltage RMS

    400 V

    StarterElectrodeVia40Megohm

  • Maximum surge anode current

    3.2 A

  • Minimum source impedance

    5000 ohm

  • DC output voltage

    1000 V

    HalfWave;10mAOutput

Characteristic

  • Average tube drop

    100 V

Data set 03

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum starting voltage

    400 V

    StarterElectrodeVia10Megohm

  • Maximum average anode current

    12 mA

    HalfWaveRectifier

  • Maximum peak anode current

    100 mA

    HalfWaveRectifier

  • Maximum surge anode current

    300 mA

    HalfWaveRectifier

  • Minimum source impedance

    5000 ohm

    HalfWaveRectifier

  • AC input voltage RMS

    1000 V

    HalfWaveRectifier

  • DC output voltage

    1000 V

    HalfWaveRectifier

  • DC output current

    10 mA

    HalfWaveRectifier

  • AC input voltage RMS

    1200 V

    VoltageDoubler;FullWave

  • DC output voltage

    2550 V

    VoltageDoubler;FullWave

  • DC output current

    10 mA

    VoltageDoubler;FullWave

Characteristic

  • Average tube drop

    100 V