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Rectifier - Full Wave ·Rectifier-Rectifier

380

Early Cunningham directly heated full-wave rectifier for receiving-equipment power supplies. Its 5 V filament construction converts AC supply voltage into DC operating power for contemporary radio equipment.

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

Description

The 380 is a rectifier described in the Cunningham Radio Tube Manual for detector, amplifier, oscillator, rectifier, or power-output service as applicable to the type.

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
5 V
Nominal heater current
2 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

No fixed ratings are recorded for this section.

Core published characteristics promoted conservatively from the approved manual sheet.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

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

193X Cunningham

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heater/filament voltage

    5 V

    Published nominal

  • Heater/filament current

    2 A

    Published nominal

  • Heater/filament voltage

    5 V

    Published nominal

  • Heater/filament current

    2 A

    Published nominal

SECTION 2

Rectifier

Characteristics

  • Heater/filament voltage

    5 V

    Published nominal

  • Heater/filament current

    2 A

    Published nominal

  • Heater/filament voltage

    5 V

    Published nominal

  • Heater/filament current

    2 A

    Published nominal