68504

Directly heated full-wave Tungar hot-cathode gas-discharge rectifier for low-voltage battery charging. Its heavy filament construction provides approximately 5 A rectified output with a characteristic conducting drop around 10 V.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 2.3 V / 18 A

Description

Full-wave Tungar hot-cathode gas-discharge rectifier for low-voltage battery charging equipment.

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: 2.3 V
Nominal heater current: 18 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: 5 A
Rectifier forward voltage drop: 10 V
Rectifier warm-up time: 30 s

Full-wave rectifier represented as two identical rectifying sections sharing the filament/cathode; one representative section row emitted.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier nominal output current: 5 A
Rectifier forward voltage drop: 10 V
Rectifier warm-up time: 30 s

Second physical rectifier section; electrical properties populated from applicable published ratings.

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

1971 English Electric Valve

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Filament voltage
2.3 V
Filament current
18 A
Nominal; source gives ±2 A
Minimum cathode heating time
30 s
DC output voltage
30 V
FullWave
DC output current
5 A
FullWave

Characteristic

Approximate voltage drop
10 V

SECTION 2

Rectifier

Other

Filament voltage
2.3 V
Filament voltage
2.3 V
Filament voltage
2.3 V
Filament current
18 A
Nominal; source gives ±2 A
Filament current
18 A
Nominal; source gives ±2 A
Filament current
18 A
Nominal; source gives ±2 A
Minimum cathode heating time
30 s
Minimum cathode heating time
30 s
Minimum cathode heating time
30 s
DC output voltage
30 V
FullWave
DC output voltage
30 V
FullWave
DC output voltage
30 V
FullWave
DC output current
5 A
FullWave

Characteristic

Approximate voltage drop
10 V
Approximate voltage drop
10 V
Approximate voltage drop
10 V