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Rectifier - Full Wave ·Rectifier-Rectifier

3B22

Gas-filled full-wave rectifier with two rectifier paths for power-supply applications. Rated for approximately 725 V peak inverse voltage, 500 mA DC output, and 4 A peak current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
UX4
Base pins
4
Nominal heater
2.5 V / 6.25 A

Description

The 3B22 is a gas-filled rectifier documented in the approved datasheet, with published filament and rectifier operating ratings.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX4
Base pins
4
Nominal heater voltage
2.5 V
Nominal heater current
6.25 A
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

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
725 V
Rectifier nominal output current
500 mA
Rectifier peak forward current
4 A

Two identical rectifying anodes share the directly heated filament/cathode; one representative section row emitted.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
725 V
Rectifier nominal output current
500 mA
Rectifier peak forward current
4 A

Second physical rectifier section; electrical properties populated from the documented identical section.

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

1942 Electrons Inc

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heating time

    20 s

    Published datasheet value

Other

  • Continuously recurring peak current

    4 A

    Oscillograph peak

SECTION 2

Rectifier

Characteristics

  • Heating time

    20 s

    Published datasheet value

Other

  • Continuously recurring peak current

    4 A

    Oscillograph peak

Data set 02

1971 English Electric Valve

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Filament voltage

    2.5 V

  • Filament current

    6.25 A

  • Minimum filament heating time

    20 s

  • Peak anode current per anode

    4 A

  • Mean anode current per anode

    500 mA

    4.5 s averaging

SECTION 2

Rectifier

Other

  • Filament voltage

    2.5 V

  • Filament current

    6.25 A

  • Minimum filament heating time

    20 s

  • Peak anode current per anode

    4 A

  • Mean anode current per anode

    500 mA

    4.5 s averaging