412BU

Cossor full-wave power-supply rectifier for AC-to-DC conversion in electronic equipment. Available manufacturer data support the rectifier role but do not provide sufficiently reliable promoted operating limits for a more numerical description.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

412BU: Cossor power-supply rectifier. The complete Cossor sheet was read for construction, technical data, operating recommendations, and application notes.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
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

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published ratings and characteristic constants promoted where applicable; remaining useful data retained as parameters.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Second physical rectifier section; electrical properties populated from corresponding 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.

No source-specific operating conditions are recorded.