R2

Brimar full-wave rectifier for receiver power supplies. Its 4 V heater supports approximately 120 mA rectified DC output for contemporary radio and related electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 4 V / 2.5 A

Description

Full-wave rectifier.

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: 4 V
Nominal heater current: 2.5 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 nominal output current: 120 mA

Representative of two identical full-wave rectifier sections.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier nominal output current: 120 mA

Second physical Rectifier section added for documented full-wave construction.

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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

RMS input per anode maximum
350 V

Data set 02

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Heater Voltage
4 V
Heater Current
2.5 A

Other

RMS Input per Anode
350 V
Rectified Current
120 mA